LTC2054-55 Datasheet by Analog Devices Inc.

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LTC2054/LTC2055
1
20545fc
TYPICAL APPLICATION
FEATURES
APPLICATIONS
DESCRIPTION
Single/Dual Micropower
Zero-Drift Operational Amplifi ers
The LTC
®
2054/LTC2055 are low power, low noise, single/
dual, zero-drift operational amplifi ers with an extended
temperature version (LTC2054MP) that has guaranteed
specifi cations from –55°C to 150°C. They are available
in TSOT-23 (ThinSOT™) and MS8 packages. For space
limited applications, the LTC2055 is also available in a
3mm × 3mm × 0.8mm dual fi ne pitch leadless package
(DFN). They operate from a single 2.7V minimum supply
and support ±5V applications. The current consumption
is typically 150µA for the LTC2054 and 130µA/amp for
the LTC2055.
The LTC2054/LTC2055, despite their miniature size, feature
uncompromising DC performance. The maximum input
offset voltage and offset drift are 3.0µV and 30nV/°C over
the –40°C to 85°C industrial temperature range. The almost
zero DC offset and drift are supported with a power supply
rejection ratio (PSRR) and common mode rejection ratio
(CMRR) of 130dB (typ).
The input common mode voltage ranges from the negative
supply up to typically 0.5V below the positive supply. The
open-loop gain is typically 140dB. The LTC2054/LTC2055
also feature a 1.6µVP-P DC to 10Hz noise and a 500kHz
gain-bandwidth product.
–48V Low Side Precision Current Sense
n Supply Current 150μA (Max per Amplifi er)
Guaranteed from –40°C to 85°C
n
Offset Voltage 3μV (Max,
–
40°C to 85°C)
n Offset Voltage Drift 30nV/°C (Max, –40°C to 85°C)
n Guaranteed Specifi cations from –55°C to 150°C
(LTC2054MP)
n Common Mode Input Range from V– to V+ – 0.5V
n Output Swings Rail-to-Rail
n Voltage Gain: 140dB (Typ)
n PSRR and CMRR: 130dB (Typ)
n Input Bias Current: 1pA (Typ, 25°C)
n Noise: 1.6µVP-P (0.01Hz to 10Hz Typ)
n Supply Operation:
2.7V to 6V (LTC2054/LTC2055)
2.7V to ±5.5V (LTC2054HV/LTC2055HV)
n Low Profi le (1mm) TSOT-23, MS8 and
3mm × 3mm × 0.8mm DFN Packages
n Thermocouple Amplifi ers
n
Electronic Scales
n
Medical Instrumentation
n
Strain Gauge Amplifi ers
n
High Resolution Data Acquisition
n
DC Accurate RC Active Filters
n
Low Side Current Sense
n Battery-Powered Systems
VOS vs Temperature
TEMPERATURE (°C)
VOS (µV)
20545 TA01b
10
8
6
4
2
0
–2
–4
–6
–8
–10
–55 155
15 50 85 120
–20
VS = ±5V
–
+
0.01μF
0.1μF
0.1μF
0.003Ω
1% 3W
39k
BZX84C5V1
VZ = 5.1
–48V SUPPLY
ISENSE,V
SENSE
–+
100Ω
1%
LTC2054
20545 TA01
–
+
10k
1%
5V
VOUT = 100VSENSE
LTC2054
–48V LOAD
Q1
ZETEX
ZVN3320F
100Ω
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. ThinSOT is a trademark of Linear Technology Corporation. All other
trademarks are the property of their respective owners.
LTC 2054/ LTC2055 ,0 rrrrrrrrrr , J1 L I: :I 24:3 1: E0 3 J , E j I: ’73 r E j I: :I *4‘ 77777777777 , E 3
LTC2054/LTC2055
2
20545fc
ABSOLUTE MAXIMUM RATINGS
Total Supply Voltage (V+ to V–)
LTC2054/LTC2055 ...................................................7V
LTC2054HV/LTC2055HV........................................12V
Input Voltage .......................(V+ + 0.3V) to (VS– – 0.3V)
Input Current ........................................................±10mA
Output Short-Circuit Duration ......................... Indefi nite
(Note 1)
Specifi ed Temperature Range (Note 2)
LTC2054C/LTC2055C ............................... 0°C to 70°C
LTC2054I/LTC2055I ..............................–40°C to 85°C
LTC2054H/LTC2055H .........................–40°C to 125°C
LTC2054MP .......................................–55°C to 150°C
Storage Temperature Range .................. –65°C to 150°C
DD Package .......................................–65°C to 125°C
Lead Temperature (Soldering, 10 sec)
TSOT23 and MS8 Packages ............................. 300°C
5 V+
4 –IN
OUT 1
TOP VIEW
S5 PACKAGE
5-LEAD PLASTIC TSOT-23
V– 2
+IN 3
TJMAX = 150°C, θJA = 250°C/W
TOP VIEW
DD PACKAGE
8-LEAD (3mm × 3mm) PLASTIC DFN
UNDERSIDE METAL INTERNALLY
CONNECTED TO V–
(PCB CONNECTION OPTIONAL)
5
6
7
8
4
3
2
1OUT A
–IN A
+IN A
V–
V+
OUT B
–IN B
+IN B
TJMAX = 125°C, θJA = 160°C/W (NOTE 5)
1
2
3
4
OUT A
–IN A
+IN A
V–
8
7
6
5
V+
OUT B
–IN B
+IN B
TOP VIEW
MS8 PACKAGE
8-LEAD PLASTIC MSOP
TJMAX = 150°C, θJA = 200°C/W
PIN CONFIGURATION
ORDER INFORMATION
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION SPECIFIED TEMPERATURE RANGE
LTC2054CS5#PBF LTC2054CS5#TRPBF LTAGB 5-Lead Plastic TSOT-23 0°C to 70°C
LTC2054HVCS5#PBF LTC2054HVCS5#TRPBF LTAGD 5-Lead Plastic TSOT-23 0°C to 70°C
LTC2054IS5#PBF LTC2054IS5#TRPBF LTAGB 5-Lead Plastic TSOT-23 –40°C to 85°C
LTC2054HVIS5#PBF LTC2054HVIS5#TRPBF LTAGD 5-Lead Plastic TSOT-23 –40°C to 85°C
LTC2054HS5#PBF LTC2054HS5#TRPBF LTAGB 5-Lead Plastic TSOT-23 –40°C to 125°C
LTC2054HVHS5#PBF LTC2054HVHS5#TRPBF LTAGD 5-Lead Plastic TSOT-23 –40°C to 125°C
LTC2055CDD#PBF LTC2055CDD#TRPBF LBCW 8-Lead (3mm × 3mm) Plastic DFN 0°C to 70°C
LTC2055HVCDD#PBF LTC2055HVCDD#TRPBF LBCX 8-Lead (3mm × 3mm) Plastic DFN 0°C to 70°C
LTC2055IDD#PBF LTC2055IDD#TRPBF LBCW 8-Lead (3mm × 3mm) Plastic DFN –40°C to 85°C
LTC2055HVIDD#PBF LTC2055HVIDD#TRPBF LBCX 8-Lead (3mm × 3mm) Plastic DFN –40°C to 85°C
LTC2055HDD#PBF LTC2055HDD#TRPBF LBCW 8-Lead (3mm × 3mm) Plastic DFN –40°C to 125°C
LTC2055HVHDD#PBF LTC2055HVHDD#TRPBF LBCX 8-Lead (3mm × 3mm) Plastic DFN –40°C to 125°C
LTC2055CMS8#PBF LTC2054CMS8#TRPBF LTBCR 8-Lead Plastic MSOP 0°C to 70°C
LTC2055HVCMS8#PBF LTC2055HVCMS8#TRPBF LTBCT 8-Lead Plastic MSOP 0°C to 70°C
LTC2055IMS8#PBF LTC2055IMS8#TRPBF LTBCR 8-Lead Plastic MSOP –40°C to 85°C
LTC2054/LTC2055 L7 LJUW
LTC2054/LTC2055
3
20545fc
ORDER INFORMATION
(LTC2054/LTC2055) The l denotes the specifi cations which apply over the
full operating temperature range, otherwise specifi cations are at TA = 25°C. VS = 3V, 5V unless otherwise noted. (Note 2)
LTC2054C/LTC2055C
LTC2054I/LTC2055I LTC2054H/LTC2055H
SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
ISSupply Current (LTC2054) No Load ●140 175 140 180 µA
ISSupply Current Per Amplifi er
(LTC2055)
No Load ●130 150 130 155 µA
VOS Input Offset Voltage (Note 3) ±0.5 ±3 ±0.5 ±3 µV
ΔVOS/ΔTAverage Input Offset Drift (Note 3) ●0.02 ±0.03 0.02 ±0.05 µV/°C
Long-Term Offset Drift 50 50 nV/√mo
IBInput Bias Current (Note 4)
●
±1
±150
±1
±3000
pA
pA
IOS Input Offset Current (Note 4)
●
±2
±300
±2
±700
pA
pA
enInput Noise Voltage RS = 100, DC to 1Hz
RS = 100, DC to 10Hz
0.6
1.6
0.6
1.6
µVP-P
µVP-P
CMRR Common Mode Rejection Ratio VCM = GND to V+ – 0.7V
VS = 3V ●
115
110
130 115
110
130 dB
dB
VCM = GND to V+ – 0.7V
VS = 5V ●
120
115
130 120
115
130 dB
dB
PSRR Power Supply Rejection Ratio VS = 2.7V to 6V
●
120
115
130 120
115
130 dB
dB
AVOL Large-Signal Voltage Gain RL = 100k, VS = 3V, VOUT = VS/2
●
120
115
135 120
115
135 dB
dB
RL = 100k, VS = 5V, VOUT = VS/2
●
125
120
140 125
120
140 dB
dB
VOUT Output Voltage Swing High RL = 5k to GND, VS = 3V
RL = 5k to GND, VS = 3V ●
2.87
2.85
2.89 2.87
2.84
2.89 V
V
RL = 5k to GND, VS = 5V
RL = 5k to GND, VS = 5V ●
4.80
4.75
4.83 4.80
4.70
4.83 V
V
RL = 100k to GND, VS = 3V
RL = 100k to GND, VS = 3V ●
2.98
2.975
2.99 2.98
2.97
2.99 V
V
RL = 100k to GND, VS = 5V
RL = 100k to GND, VS = 5V ●
4.985
4.980
4.99 4.985
4.970
4.99 V
V
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION SPECIFIED TEMPERATURE RANGE
LTC2055HVIMS8#PBF LTC2055HVIMS8#TRPBF LTBCT 8-Lead Plastic MSOP –40°C to 85°C
LTC2055HMS8#PBF LTC2055HMS8#TRPBF LTBCR 8-Lead Plastic MSOP –40°C to 125°C
LTC2055HVHMS8#PBF LTC2055HVHMS8#TRPBF LTBCT 8-Lead Plastic MSOP –40°C to 125°C
LTC2054MPS5#PBF LTC2054MPS5#TRPBF LTFFF 5-Lead Plastic TSOT-23 –55°C to 150°C
LTC2054HVMPS5#PBF LTC2054HVMPS5#TRPBF LTFFG 5-Lead Plastic TSOT-23 –55°C to 150°C
Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. *The temperature grade is identifi ed by a label on the shipping container.
Consult LTC Marketing for information on non-standard lead based fi nish parts.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifi cations, go to: http://www.linear.com/tapeandreel/
ELECTRICAL CHARACTERISTICS
LTC 2054/ LTC2055 L7LJCUEN2
LTC2054/LTC2055
4
20545fc
(LTC2054HV/LTC2055HV) The ● denotes the specifi cations which apply over the full operating temperature range, otherwise
specifi cations are at TA = 25°C. VS = ±5V unless otherwise noted. (Note 2)
LTC2054HVC/LTC2055HVC
LTC2054HVI/LTC2055HVI LTC2054HVH/LTC2055HVH
SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
ISSupply Current No Load (LTC2054) ●175 210 175 215 µA
ISSupply Current (Per Amplifi er) No Load (LTC2055) ●150 180 150 185 µA
VOS Input Offset Voltage (Note 3) ±0.5 ±5 ±0.5 ±5 µV
ΔVOS/ΔTAverage Input Offset Drift (Note 3) ●0.025 ±0.03 0.025 ±0.05 µV/°C
Long-Term Offset Drift 50 50 nV/√mo
IBInput Bias Current (Note 4)
●
±3
±150
±3
±3000
pA
pA
IOS Input Offset Current (Note 4)
●
±6
±300
±6
±700
pA
pA
enInput Noise Voltage RS = 100, DC to 1Hz
RS = 100, DC to 10Hz
0.6
1.6
0.6
1.6
µVP-P
µVP-P
CMRR Common Mode Rejection Ratio VCM = GND to V+ – 0.9
●
120
115
130 120
115
130 dB
dB
PSRR Power Supply Rejection Ratio VS = 2.7V to 11V
●
120
115
130 120
115
130 dB
dB
AVOL Large-Signal Voltage Gain RL = 100k, VOUT = GND
●
125
120
140 125
120
140 dB
dB
VOUT Maximum Output Voltage Swing RL = 5k to GND
RL = 5k to GND ●
±4.78
±4.75
±4.82 ±4.78
±4.70
±4.82 V
V
RL = 100k to GND
RL = 100k to GND ●
±4.98
±4.975
±4.99 ±4.98
±4.97
±4.99 V
V
SR Slew Rate 0.5 0.5 V/µs
GBW Gain Bandwidth Product 500 500 kHz
fSInternal Sampling Frequency 1 1 kHz
LTC2054C/LTC2055C
LTC2054I/LTC2055I LTC2054H/LTC2055H
SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
VOUT Output Voltage Swing Low RL = 5k to GND, VS = 3V
RL = 5k to GND, VS = 3V ●
28
10
38
10
mV
mV
RL = 5k to GND, VS = 5V
RL = 5k to GND, VS = 5V ●
28
10
38
10
mV
mV
RL = 100k to GND, VS = 3V
RL = 100k to GND, VS = 3V ●
28
10
38
10
mV
mV
RL = 100k to GND, VS = 5V
RL = 100k to GND, VS = 5V ●
28
10
38
10
mV
mV
SR Slew Rate 0.5 0.5 V/µs
GBW Gain Bandwidth Product 500 500 kHz
fSInternal Sampling Frequency 1 1 kHz
(LTC2054/LTC2055) The l denotes the specifi cations which apply over the
full operating temperature range, otherwise specifi cations are at TA = 25°C. VS = 3V, 5V unless otherwise noted. (Note 2)
ELECTRICAL CHARACTERISTICS
LTC2054/LTC2055 L7 LJUW
LTC2054/LTC2055
5
20545fc
ELECTRICAL CHARACTERISTICS
(LTC2054MP) The l denotes the specifi cations which apply over the full
operating temperature range, otherwise specifi cations are at TA = 25°C. VS = 3V, 5V unless otherwise noted. (Note 2)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
ISSupply Current No Load ●145 190 µA
VOS Input Offset Voltage (Note 3)
(Note 3) –55°C to 135°C
●±10
±8 µV
µV
ΔVOS/ΔTAverage Input Offset Drift (Note 3) ●0.04 ±0.1 µV/°C
Long-Term Offset Drift 50 nV/√mo
IBInput Bias Current (Note 4)
●
±1 ±12 pA
nA
IOS Input Offset Current (Note 4)
●
±2
±5
pA
nA
enInput Noise Voltage RS = 100, DC to 1Hz
RS = 100, DC to 10Hz
0.6
1.6
µVP-P
µVP-P
CMRR Common Mode Rejection Ratio VCM = GND to V+ – 0.7V
VS = 3V ●
115
105
130 dB
dB
VCM = GND to V+ – 0.7V
VS = 5V ●
120
110
130 dB
dB
PSRR Power Supply Rejection Ratio VS = 2.7V to 6V
●
120
110
130 dB
dB
AVOL Large-Signal Voltage Gain RL = 100k, VS = 3V, VOUT = VS/2
●
120
110
135 dB
dB
RL = 100k, VS = 5V, VOUT = VS/2
●
125
115
140 dB
dB
VOUT Output Voltage Swing High RL = 5k to GND, VS = 3V
RL = 5k to GND, VS = 3V ●
2.87
2.84
2.89 V
V
RL = 5k to GND, VS = 5V
RL = 5k to GND, VS = 5V ●
4.80
4.70
4.83 V
V
RL = 100k to GND, VS = 3V
RL = 100k to GND, VS = 3V ●
2.98
2.97
2.99 V
V
RL = 100k to GND, VS = 5V
RL = 100k to GND, VS = 5V ●
4.985
4.970
4.99 V
V
VOUT Output Voltage Swing Low RL = 5k to GND, VS = 3V
RL = 5k to GND, VS = 3V ●
38
10
mV
mV
RL = 5k to GND, VS = 5V
RL = 5k to GND, VS = 5V ●
38
10
mV
mV
RL = 100k to GND, VS = 3V
RL = 100k to GND, VS = 3V ●
38
10
mV
mV
RL = 100k to GND, VS = 5V
RL = 100k to GND, VS = 5V ●
38
10
mV
mV
SR Slew Rate 0.5 V/µs
GBW Gain Bandwidth Product 500 kHz
fSInternal Sampling Frequency 1kHz
LTC 2054/ LTC2055 L7LJCUEN2
LTC2054/LTC2055
6
20545fc
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
ISSupply Current No Load ●175 220 µA
VOS Input Offset Voltage (Note 3) ●±10 µV
ΔVOS/ΔTAverage Input Offset Drift (Note 3) ●0.05 ±0.1 µV/°C
Long-Term Offset Drift 50 nV/√mo
IBInput Bias Current (Note 4)
●
±3
±12
pA
nA
IOS Input Offset Current (Note 4)
●
±6
±5
pA
nA
enInput Noise Voltage RS = 100, DC to 1Hz
RS = 100, DC to 10Hz
0.6
1.6
µVP-P
µVP-P
CMRR Common Mode Rejection Ratio VCM = GND to V+ – 0.9
●
120
110
130 dB
dB
PSRR Power Supply Rejection Ratio VS = 2.7V to 11V
●
120
110
130 dB
dB
AVOL Large-Signal Voltage Gain RL = 100k, VOUT = GND
●
125
115
140 dB
dB
VOUT Maximum Output Voltage Swing RL = 5k to GND
RL = 5k to GND ●
±4.78
±4.675
±4.82 V
V
RL = 100k to GND
RL = 100k to GND ●
±4.98
±4.965
±4.99 V
V
SR Slew Rate 0.5 V/µs
GBW Gain Bandwidth Product 500 kHz
fSInternal Sampling Frequency 1kHz
(LTC2054HVMP) The ● denotes the specifi cations which apply over the full
operating temperature range, otherwise specifi cations are at TA = 25°C. VS = ±5V unless otherwise noted. (Note 2)
ELECTRICAL CHARACTERISTICS
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: The LTC2054/LTC2055 are designed, characterized and expected to
meet the extended temperature limits of –40°C and 125°C. The LTC2054C/
LTC2055C/LTC2054HVC/LTC2055HVC are guaranteed to meet the
temperature limits of 0°C and 70°C. The LTC2054I/LTC2055I/LTC2054HVI/
LTC2055HVI are guaranteed to meet temperature limits of –40°C and
85°C. The LTC2054H/LTC2055H and LTC2054HVH/LTC2055HVH are
guaranteed to meet the temperature limits of –40°C and 125°C. The
LTC2054MP/LTC2054HVMP are guaranteed to meet the temperature limits
of –55°C and 150°C.
Note 3: These parameters are guaranteed by design. Thermocouple effects
preclude measurements of these voltage levels during automated testing.
Note 4: Limit is determined by high speed automated test capability. See
Typical Characteristic curves for actual typical performance. For tighter
specifi cations, please consult Linear Technology Marketing.
Note 5: The θJA specifi ed for the DD package is with minimal PCB heat
spreading metal. Using expanded metal area on all layers of a board
reduces this value.
LTC2054/LTC2055 L7 LJUW
LTC2054/LTC2055
7
20545fc
TYPICAL PERFORMANCE CHARACTERISTICS
Common Mode Rejection Ratio
vs Frequency
DC CMRR
vs Common Mode Input Range PSRR vs Frequency
Output Voltage Swing
vs Load Resistance
Output Swing
vs Load Current
Short-Circuit Output Current
vs Supply Voltage
Gain/Phase vs Frequency Input Bias Current vs Temperature
FREQUENCY (Hz)
20
CMRR (dB)
40
80
120
140
1 100 1k 100k
20545 G01
010 10k
60
100
VS = 3V OR 5V
VCM = 0.5VP-P
VCM (V)
20
CMRR (dB)
40
80
120
140
1340
20545 G02
025
60
100
VS = 3V VS = 5V
TA = 25°C
FREQUENCY (Hz)
10
PSRR (dB)
140
120
100
80
60
40
20
0
–20
–40 100 1k 10k 100k
20545 G03
1M
+PSRR
VS = ±2.5V
–PSRR
LOAD RESISTANCE (k)
0
OUTPUT SWING (V)
24
20545 G04
6
5
4
3
2
1
0
–1
–2
–3
–4
–5 RL TO GND
VS= ±5V
VS= ±2.5V
VS= ±2.5V
VS= ±1.5V
VS= ±1.5V
VS= ±5V
SOURCING OR SINKING LOAD CURRENT (mA)
0
V+
V+– 0.5
V+– 1.0
V+– 1.5
V– + 1.5
V– + 1.0
V– + 0.5
V–
3
20545 G05
12 45
OUTPUT SWING (V)
VS = ±2.5V
VS = ±2.5V
VS = ±5V
VS = ±5V
VS = ±1.5V
VS = ±1.5V
TOTAL SUPPLY VOLTAGE, V+ TO V– (V)
345
–6
–8
–10
SHORT-CIRCUIT OUTPUT CURRENT, IOUT (mA)
–4
–2
0
2
6
6879
20545 G06
10 11
4ISINK
VOUT = V+
ISOURCE
VOUT = V–
10 100 1k 10k 100k 1M 10M
FREQUENCY (Hz)
GAIN (dB)
20
40
60
120
100
20545 G07
–20
–40
80
–160
–140
–120
–60
–80
–200
0 –180
–220
–100
PHASE (DEG)
VS = ±2.5V
VIN = 0.5VP-P
RL = 10k
CL = 30pF
CL = 50pF
CL = 100pF
GAIN
PHASE
TEMPERATURE (°C)
–55
BIAS CURRENT (pA)
155
20545 G08
50 85 120
100000
10000
1000
100
10
115–20
VS = ±5V
LTC 2054/ LTC2055 L7LJCUEN2
LTC2054/LTC2055
8
20545fc
TYPICAL PERFORMANCE CHARACTERISTICS
Transient Response
Output Overload Recovery Output Overload Recovery Common Mode Input Range
Supply Current vs Supply Voltage Supply Current vs Temperature Noise Spectrum
Input Bias Current
vs Input Common Mode Voltage
VOS vs Temperature
TEMPERATURE (°C)
–55
VOS (µV)
155
20545 G09
50 85 120
8
7
6
5
4
3
2
1
0
–1
–2 15–20
VS = ±5V
BIAS CURRENT (pA)
10000
1000
100
10
1
0.1
COMMON MODE VOLTAGE (V)
–2.5 –1.5 –0.5 02
20545 G10
–2 –1 0.5 11.5
TA = –40°C
TA = 70°C
TA = 85°C
TA = 125°C
TA = 155°C
TA = 25°C
VSUPPLY = ±2.5V
TA = –55°C
10µs/DIV
AV= 1
RL= 100k
CL= 50pF
VS= ±2.5V
VIN = 10kHz 2VP-P
OUTPUT (V)
20545 G11
–1
0
1
2ms/DIV
AV= –100
RL= 100k
VS= ±2.5V
20545 G12
OUTPUT (V)INPUT (V)
0
–0.2
0
2.5
2ms/DIV
AV= –100
RL= 100k
VS= ±2.5V
20545 G13
INPUT (V)OUTPUT (V)
0
–2.5
0
0.2
TOTAL SUPPLY VOLTAGE (V)
0
COMMON MODE VOLTAGE (V)
4
6
111098
20545 G14
2
02461357
11
10
9
8
3
5
1
7
V– = 0V
TOTAL SUPPLY VOLTAGE (V)
01234567 1098
SUPPLY CURRENT (µA)
20545 G15
250
225
200
175
150
125
100
75
50
25
0
TEMPERATURE (°C)
SUPPLY CURRENT (µA)
2
05
4
5
G
1
6
250
225
200
175
150
125
100
75
50
25
0
–55 155
15 50 85 120
–20
VS = ±5V
VS = ±2.5V
VS = ±1.5V
FREQUENCY (Hz)
40
INPUT REFFERED VOLTAGE NOISE DENSITY (nV/√Hz)
50
70
90
100
10 10k1k
20545 G17
0100
80
60
20
30
10 AV = 100
VS = ±2.5V
LTC2054/LTC2055 L7 LJUW
LTC2054/LTC2055
9
20545fc
TEST CIRCUITS
Electrical Characteristics
Test Circuit
DC-10Hz Noise Test Circuit
–
+
LTC2054/55
V+
V–
10
RL
20545 TC01
100k
OUTPUT
–
+
LTC2054/55 –
+
LT1012
10
20545 TC02
100k 475k
475k
316k158k
0.1µF 0.01µF
0.01µF
TO X-Y
RECORDER
FOR 1Hz NOISE BW INCREASE ALL THE CAPACITORS BY A FACTOR OF 10.
LTC 2054/ LTC2055 L7LJCUEN2
LTC2054/LTC2055
10
20545fc
APPLICATIONS INFORMATION
Clock Feedthrough, Input Bias Current
The LTC2054 and LTC2055 use auto-zeroing circuitry
to achieve an almost zero DC offset over temperature,
common mode voltage, and power supply voltage. The
frequency of the clock used for auto-zeroing is typically
1.0kHz. The term “clock feedthrough” is broadly used to
indicate visibility of this clock frequency in the op amp
output spectrum. There are typically two types of clock
feedthrough in auto-zeroed op amps like the LTC2054/
LTC2055.
The fi rst form of clock feedthrough is caused by the settling
of the internal sampling capacitor and is input referred;
that is, it is multiplied by the closed loop gain of the op
amp. This form of clock feedthrough is independent of the
magnitude of the input source resistance or the magnitude
of the gain setting resistors. The LTC2054/LTC2055 have
an input referred residue clock feedthrough of less then
0.2µVRMS at 1.0kHz.
DC to 1Hz Noise
The second form of clock feedthrough is caused by the small
amount of charge injection occurring during the sampling
and holding of the op amp’s input offset voltage. The current
spikes are multiplied by the impedance seen at the input
terminals of the op amp, and the resulting voltage spikes
appear at the output multiplied by the closed loop gain
of the op amp. To reduce this form of clock feedthrough,
use smaller valued gain setting resistors and minimize the
source resistance at the input. If the resistance seen at the
inputs is less than 10kΩ, this form of clock feedthrough
is less than the amount of residue clock feedthrough from
the fi rst form described above.
Placing a capacitor across the feedback resistor reduces
either form of clock feedthrough by limiting the bandwidth
of the closed loop gain.
Input bias current is defi ned as the DC current into the
input pins of the op amp. The same current spikes that
DC to 10Hz Noise
0.4µV
10 SEC
20545 F01
1µV
1 SEC
20545 F02
L7 LJUW LTC2054/LTC2055 || 499k / \
LTC2054/LTC2055
11
20545fc
APPLICATIONS INFORMATION
cause the second form of clock feedthrough described
above, when averaged, dominate the DC input bias current
of the op amp below 70°C.
At temperatures above 70°C, the leakage of the ESD protec-
tion diodes on the inputs increases the input bias currents
of both inputs in the positive direction, while the current
caused by the charge injection stays relatively constant.
At elevated temperatures (above 70°C) the leakage current
begins to dominate and both the negative and positive
pins’ input bias currents are in the positive direction (into
the pins).
Extended Common Mode Range
The LTC2054/LTC2055 input stage is designed to allow
nearly rail-to-rail input common mode signals. In addition,
signals that extend beyond the allowed input common
mode range do not cause output phase inversion.
Voltage Follower with Input Exceeding
the Common Mode Range
Extended Common Mode Range
–
+
100k
–2.5V
2.5V
1k OUTPUT
±3.75VP
SINE WAVE
LTC2054/55
20545 F03
500µs/DIV
AV= 1
RL= 100k
VS= ±2.5V
VIN = 500Hz 7.5VP-P
OUTPUT (V) INPUT (V)
20545 F04
0V
2V
–2V
0V
2V
–2V
TYPICAL APPLICATIONS
Simple Differential Bridge Amplifi er
–
+
5V
0.1µF 499k
0.1µF
499k
5
1
2
3
4
1µF
5V
AV = 100
20545 TA02
10k
BRIDGE
LTC2054HV
–5V
LT1790-2.5
LTC 2054/ LTC2055 .1 P I” t? T i J. 1‘ w w L7LJCUEN2
LTC2054/LTC2055
12
20545fc
TYPICAL APPLICATIONS
Ground Referred Precision Current Sources
Instrumentation Amplifi er with 100V Common Mode Input Voltage
Gain of 1001 Single Supply Instrumentation Amplifi er
–
+
LTC2054
LT1634-1.25
+
–
VOUT
V+
10k
1
2
3
45
5
RSET
0 ≤ IOUT ≤ 100µA
0.2V ≤ VOUT ≤ (V+) – 1.5V
–
+
LTC2054
LT1634-1.25
+
–
VOUT
V–
1
2
3
4
RSET
20545 TA03
IOUT = ———
RSET
1.25V
IOUT = ———
RSET
1.25V
0 ≤ IOUT ≤ 100µA
(V–) + 1.5V ≤ VOUT ≤ –1V
10k
–
+
1/2
LTC2055HV –
+
1/2
LTC2055HV
1M
1M
1
3
2
20545 TA04
1k 1M
1k
1k
VOUT
8
4
7
5
6
V+
V–
OUTPUT OFFSET ≤3mV
FOR 0.1% RESISTORS, CMRR = 54dB
+
–
VIN
20545 TA05
+
–
+
–
R1
1M
R2
1k
R3
1k
R4 1M
V+
28
1
4
3
6
7
5
VOUT
–VIN
+VIN
1/2
LTC2055 1/2
LTC2055
OUTPUT DC OFFSET ≤ 6mV
FOR 0.1% RESISTORS, CMRR = 54dB
C1
0.1µF
LTC2054/LTC2055 ‘ 44 rfififim l fiffiLfi—f [ l H I figs 311‘“ Ui‘UU i w; + W}; \ ¥ + 1V 0 \ mm J‘L i * D a +:CH:H:H:|— 7 L7 LJUW
LTC2054/LTC2055
13
20545fc
3.00 p0.10
(4 SIDES)
NOTE:
1. DRAWING TO BE MADE A JEDEC PACKAGE OUTLINE M0-229 VARIATION OF (WEED-1)
2. DRAWING NOT TO SCALE
3. ALL DIMENSIONS ARE IN MILLIMETERS
4. DIMENSIONS OF EXPOSED PAD ON BOTTOM OF PACKAGE DO NOT INCLUDE
MOLD FLASH. MOLD FLASH, IF PRESENT, SHALL NOT EXCEED 0.15mm ON ANY SIDE
5. EXPOSED PAD SHALL BE SOLDER PLATED
6. SHADED AREA IS ONLY A REFERENCE FOR PIN 1 LOCATION
ON TOP AND BOTTOM OF PACKAGE
0.40 p 0.10
BOTTOM VIEW—EXPOSED PAD
1.65 p 0.10
(2 SIDES)
0.75 p0.05
R = 0.125
TYP
2.38 p0.10
14
85
PIN 1
TOP MARK
(NOTE 6)
0.200 REF
0.00 – 0.05
(DD8) DFN 0509 REV C
0.25 p 0.05
2.38 p0.05
RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS
APPLY SOLDER MASK TO AREAS THAT ARE NOT SOLDERED
1.65 p0.05
(2 SIDES)
2.10 p0.05
0.50
BSC
0.70 p0.05
3.5 p0.05
PACKAGE
OUTLINE
0.25 p 0.05
0.50 BSC
PACKAGE DESCRIPTION
DD Package
8-Lead Plastic DFN (3mm × 3mm)
(Reference LTC DWG # 05-08-1698 Rev C)
LTC 2054/ LTC2055 annnngfi Lz 7345 7* VDIJEJUA , . uazwuaa A Le fl 4, ‘67 + 1% U 4 fl: ~ L7LJCUEN2
LTC2054/LTC2055
14
20545fc
PACKAGE DESCRIPTION
MSOP (MS8) 0307 REV F
0.53 ± 0.152
(.021 ± .006)
SEATING
PLANE
NOTE:
1. DIMENSIONS IN MILLIMETER/(INCH)
2. DRAWING NOT TO SCALE
3. DIMENSION DOES NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS.
MOLD FLASH, PROTRUSIONS OR GATE BURRS SHALL NOT EXCEED 0.152mm (.006") PER SIDE
4. DIMENSION DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSIONS.
INTERLEAD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.152mm (.006") PER SIDE
5. LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING) SHALL BE 0.102mm (.004") MAX
0.18
(.007)
0.254
(.010)
1.10
(.043)
MAX
0.22 – 0.38
(.009 – .015)
TYP
0.1016 ± 0.0508
(.004 ± .002)
0.86
(.034)
REF
0.65
(.0256)
BSC
0° – 6° TYP
DETAIL “A”
DETAIL “A”
GAUGE PLANE
12
34
4.90 ± 0.152
(.193 ± .006)
8765
3.00 ± 0.102
(.118 ± .004)
(NOTE 3)
3.00 ± 0.102
(.118 ± .004)
(NOTE 4)
0.52
(.0205)
REF
5.23
(.206)
MIN
3.20 – 3.45
(.126 – .136)
0.889 ± 0.127
(.035 ± .005)
RECOMMENDED SOLDER PAD LAYOUT
0.42 ± 0.038
(.0165 ± .0015)
TYP
0.65
(.0256)
BSC
MS8 Package
8-Lead Plastic MSOP
(Reference LTC DWG # 05-08-1660 Rev F)
LTC2054/LTC2055 4—; A we ff @; gfi i E » 1 L7 LJUW
LTC2054/LTC2055
15
20545fc
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa-
tion that the interconnection of its circuits as described herein will not infringe on existing patent rights.
PACKAGE DESCRIPTION
1.50 – 1.75
(NOTE 4)
2.80 BSC
0.30 – 0.45 TYP
5 PLCS (NOTE 3)
DATUM ‘A’
0.09 – 0.20
(NOTE 3) S5 TSOT-23 0302 REV B
PIN ONE
2.90 BSC
(NOTE 4)
0.95 BSC
1.90 BSC
0.80 – 0.90
1.00 MAX
0.01 – 0.10
0.20 BSC
0.30 – 0.50 REF
NOTE:
1. DIMENSIONS ARE IN MILLIMETERS
2. DRAWING NOT TO SCALE
3. DIMENSIONS ARE INCLUSIVE OF PLATING
4. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR
5. MOLD FLASH SHALL NOT EXCEED 0.254mm
6. JEDEC PACKAGE REFERENCE IS MO-193
3.85 MAX
0.62
MAX
0.95
REF
RECOMMENDED SOLDER PAD LAYOUT
PER IPC CALCULATOR
1.4 MIN
2.62 REF
1.22 REF
S5 Package
5-Lead Plastic TSOT-23
(Reference LTC DWG # 05-08-1635)
LTC2054/LTC2055 m L7LJCUEN2
LTC2054/LTC2055
16
20545fc
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com
© LINEAR TECHNOLOGY CORPORATION 2004
LT 0809 REV C • PRINTED IN USA
RELATED PARTS
TYPICAL APPLICATIONS
Low Power, Bidirectional 60V Precision Hi Side Current Sense
Precision Low Drift Integrator Ultra-Precision, Wide Dynamic Range
10Hz Bandwidth Photodiode Amplifi er
–
+
LT1787HV
VS–VS+
4.7µF
VOUT = 2.5V
+1000* VSENSE
2.5V REF
1
53
5
3
1
1
64
4
2
2
8
5
6
72
4
PRECISION
BIDIRECTIONAL
HIGH VOLTAGE
LEVEL SHIFT
AND GAIN OF 8
0.1µF
10µF
10µF 1µF 0.1µF
100 LTC2054
BAT54
LTC1754-5
1N4686
3.9VZ
33
2N5401
MPSA42
–+
VSENSE
POSITIVE SENSE
10m
PRECISION
BIDIRECTIONAL
GAIN OF 125
12.4k
POWER SUPPLY
(NOTE: POSITIVE
CURRENT SENSE
INCLUDES CIRCUIT
SUPPLY CURRENT)
20545 TA06
35.7k
ON 5V
OFF 0V
100
–
+
VIN
OPEN
t = tO
S1 1
1M
5V
–5V
10µF
LTC2054HV
20545 TA07
4
3
5
1
2
V
IN (t)
10 sec
tO
t
°dt
–
+
5V
–5V
100k
0.15µF
LTC2054
20545 TA08
4
3
5
1
2
ANY
PHOTODIODE
GAIN = 0.1V/µA
~10pA RESOLUTION
50µA FULL SCALE
2k
0.01µF
1k
PART NUMBER DESCRIPTION COMMENTS
LTC1049 Low Power Zero-Drift Op Amp Low Supply Current 200µA
LTC1050 Precision Zero-Drift Op Amp Single Supply Operation 4.75V to 16V, Noise Tested and Guaranteed
LTC1051/LTC1053 Precision Zero-Drift Op Amp Dual/Quad Version of the LTC1050
LTC1150 ±15V Zero-Drift Op Amp High Voltage Operation ±18V
LTC1152 Rail-to-Rail Input and Output Zero-Drift Op Amp Single Zero-Drift Op Amp with Rail-to-Rail Input and Output and Shutdown
LT1677 Low Noise Rail-to-Rail Input and Output
Precision Op Amp
V
OS = 90µV, VS = 2.7V to 44V
LT1884/LT1885 Rail-to-Rail Output Precision Op Amp V
OS = 50µV, IB = 400pA, VS = 2.7V to 40V
LTC2050 Zero-Drift Op Amp Enhanced Output Drive Capability
LTC2051/LTC2052 Dual/Quad Zero-Drift Op Amp Dual/Quad Version of the LTC2050 in MS8/GN16 Package
LTC2053 Zero-Drift Instrumentation Amp Rail-to-Rail Input