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Final Electrical Specifications
LTC2050 Zero-Drift Operational Amplifier in SOT-23
November 1999
FEATURES
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DESCRIPTIO
SOT-23 Package Maximum Offset Voltage of 3V Maximum Offset Voltage Drift of 30nV/C Noise: 1.5VP-P (0.1Hz to 10Hz Typ) Voltage Gain: 140dB (Typ) PSRR: 130dB (Typ) CMRR: 130dB (Typ) Supply Current: 0.8mA (Typ) Single Supply Operation: 2.7V to 6V Extended Common Mode Input Range Output Swings Rail-to-Rail Overload Recovery Time: 2ms (Typ)
The LTC(R)2050 is a low drift operational amplifier available in the 5- or 6-lead SOT-23 and SO-8 packages. It operates from a single 2.7V supply while still supporting 5V applications. The power consumption is 800A and the versions in the 6-lead SOT-23 and SO-8 packages offer power shutdown (active low). The LTC2050, despite its miniature size, features uncompromising DC performance. The typical input offset voltage and offset drift are 0.5V and 10nV/C. The almost zero DC offset and drift are supported with a power supply rejection ratio (PSRR) and common mode rejection ratio (CMRR) of more than 130dB. The input common mode voltage ranges from the negative supply up to 1V from the positive supply. The LTC2050 also has an enhanced output stage capable of driving loads as low as 1k to both supply rails. The open-loop gain, loaded with 1k, is in excess of 140dB. The LTC2050 also features a 1.5VP-P DC to 10Hz noise and a 3MHz gain bandwidth product.
, LTC and LT are registered trademarks of Linear Technology Corporation.
APPLICATI
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S
Thermocouple Amplifiers Electronic Scales Medical Instrumentation Strain Gauge Amplifiers High Resolution Data Acquisition DC Accurate RC Active Filters
TYPICAL APPLICATI
5V 50 GAIN TRIM
Differential Bridge Amplifier
5V 3 0.1F 1000pF
Input Referred Noise 0.1Hz to 10Hz
VS = 5V
18.2k
1
V
350 STRAIN GAUGE
0 -1
2
- +
7 6 AV = 100 -3 0
2050 TA01
LTC2050 3 4
1000pF
18.2k 2 6 4 TIME (s) 8 10
LT2050 TA02
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 representation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
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LTC2050 ABSOLUTE AXI U RATI GS (Note 1)
Specified Temperature Range (Note 3) .. - 40C to 85C Storage Temperature Range ................ - 65C to 150C Lead Temperature (Soldering, 10 sec)................. 300C Total Supply Voltage (V + to V -) ............................... 7V Input Voltage ........................ (V + + 0.3V) to (V - - 0.3V) Output Short-Circuit Duration ......................... Indefinite Operating Temperature Range ............... - 40C to 85C
PACKAGE/ORDER I FOR ATIO
TOP VIEW OUT 1 V- 2 +IN 3 4 -IN 5 V+ OUT 1 V- 2 +IN 3
S5 PACKAGE 5-LEAD PLASTIC SOT-23
TJMAX = 125C, JA = 250CW
S6 PACKAGE 6-LEAD PLASTIC SOT-23
TJMAX = 125C, JA = 230CW
ORDER PART NUMBER LTC2050CS5
S5 PART MARKING LTIN
ORDER PART NUMBER LTC2050CS6
Consult factory for Military grade parts.
The q denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25C. VS = 3V unless otherwise noted. (Note 3)
PARAMETER Input Offset Voltage Average Input Offset Drift Long-Term Offset Drift Input Bias Current
q
ELECTRICAL CHARACTERISTICS
CONDITIONS (Note 2) (Note 2)
Input Offset Current
q
Input Noise Voltage Common Mode Rejection Ratio Power Supply Rejection Ratio
RS = 100, DC to 10Hz VCM = V- to V + - 1.3
q q
Large-Signal Voltage Gain Maximum Output Voltage Swing Slew Rate Gain Bandwidth Product Supply Current
RL = 10k
q
RL = 2k RL = 10k
VSHDN = V +, No Load VSHDN = V -
2
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W
WW
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W
TOP VIEW
TOP VIEW 6 V+ 5 SHDN 4 -IN
SHDN 1 -IN 2 +IN 3 V- 4
8 7 6 5
NC V+ OUT NC
S8 PACKAGE 8-LEAD PLASTIC SO
TJMAX = 125C, JA = 190CW
S6 PART MARKING LTIP
ORDER PART NUMBER LTC2050CS8 LTC2050IS8
S8 PART MARKING 2050 2050I
MIN
q
TYP 0.5 50 20
MAX 3 0.03 75 300 150 200
UNITS V V/C nV/mo pA pA pA pA VP-P dB dB dB dB dB dB V V V/s MHz
1.5 115 110 120 115 120 115 2.85 2.95 130 130 130 130 140 140 2.94 2.98 2 3
q q
q q
0.75
1.1 10
mA A
LTC2050
The q denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25C. VS = 3V unless otherwise noted. (Note 3)
PARAMETER Shutdown Pin Input Low Voltage Shutdown Pin Input High Voltage Shutdown Pin Input Current Internal Sampling Frequency VSHDN = V- CONDITIONS
q q q
ELECTRICAL CHARACTERISTICS
MIN V + - 0.5
TYP
MAX V - + 0.5
UNITS V V A kHz
- 0.5 7.5
-3
The q denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25C. VS = 5V unless otherwise noted. (Note 3)
PARAMETER Input Offset Voltage Average Input Offset Drift Long-Term Offset Drift Input Bias Current
q
CONDITIONS (Note 2) (Note 2)
q
MIN
TYP 0.5 50
MAX 3 0.03 150 300 300 400
UNITS V V/C nV/mo pA pA pA pA VP-P dB dB dB dB dB dB V V V/s MHz
Input Offset Current
q
Input Noise Voltage Common Mode Rejection Ratio Power Supply Rejection Ratio
RS = 100, DC to 10Hz VCM = V - to V + - 1.3
q q
1.5 120 115 120 115 125 120 4.85 4.95 130 130 130 130 140 140 4.94 4.98 2 3
Large-Signal Voltage Gain Maximum Output Voltage Swing Slew Rate Gain Bandwidth Product Supply Current Shutdown Pin Input Low Voltage Shutdown Pin Input High Voltage Shutdown Pin Input Current Internal Sampling Frequency
RL = 10k
q
RL = 2k RL = 10k
q q
VSHDN = V +, No Load VSHDN = V -
q q q q
0.8
1.2 10 V - + 0.5
mA A V V A kHz
V + - 0.5 - 0.5 7.5 -5
VSHDN = V-
q
Note 1: Absolute Maximum Ratings are those values beyond which the life of the device may be impaired. Note 2: These parameters are guaranteed by design. Thermocouple effects preclude measurements of these voltage levels during automated testing.
Note 3: The LTC2050C is guaranteed to meet specified performance from 0C to 70C and is designed, characterized and expected to meet these extended temperature limits, but is not tested at - 40C and 85C. The LTC2050I is guaranteed to meet the extended temperature limits.
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LTC2050
PACKAGE DESCRIPTION
2.60 - 3.00 (0.102 - 0.118) 1.50 - 1.75 (0.059 - 0.069)
0.35 - 0.55 (0.014 - 0.022)
NOTE: 1. DIMENSIONS ARE IN MILLIMETERS 2. DIMENSIONS ARE INCLUSIVE OF PLATING 3. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR 4. MOLD FLASH SHALL NOT EXCEED 0.254mm 5. PACKAGE EIAJ REFERENCE IS SC-74A (EIAJ)
2.6 - 3.0 (0.110 - 0.118) 1.50 - 1.75 (0.059 - 0.069) 0.00 - 0.15 (0.00 - 0.006) 0.90 - 1.45 (0.035 - 0.057) 2.80 - 3.00 (0.110 - 0.118) (NOTE 3)
0.35 - 0.55 (0.014 - 0.022)
NOTE: 1. DIMENSIONS ARE IN MILLIMETERS 2. DIMENSIONS ARE INCLUSIVE OF PLATING 3. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR 4. MOLD FLASH SHALL NOT EXCEED 0.254mm 5. PACKAGE EIAJ REFERENCE IS SC-74A (EIAJ)
0.010 - 0.020 x 45 (0.254 - 0.508) 0.008 - 0.010 (0.203 - 0.254) 0- 8 TYP
0.014 - 0.019 (0.355 - 0.483) TYP *DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE **DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE
0.016 - 0.050 (0.406 - 1.270)
RELATED PARTS
PART NUMBER LTC1049 LTC1050 LTC1150 LTC1152 DESCRIPTION Low Power Zero-Drift Op Amp Precision Zero-Drift Op Amp 15V Zero-Drift Op Amp Rail-to-Rail Input and Output Zero-Drift Op Amp COMMENTS Low Supply Current 200A Single Supply Operation 4.75V to 16V, Noise Tested and Guaranteed Dual/Quad High Voltage Operation 18V Single Zero-Drift Op Amp with Rail-to-Rail Input and Output and Shutdown
LTC1051/LTC1053 Precision Zero-Drift Op Amp
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Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408)432-1900 q FAX: (408) 434-0507 q www.linear-tech.com
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Dimensions in inches (millimeters) unless otherwise noted. S5 Package 5-Lead Plastic SOT-23
(LTC DWG # 05-08-1633)
0.00 - 0.15 (0.00 - 0.006) 0.90 - 1.45 (0.035 - 0.057) 2.80 - 3.00 (0.110 - 0.118) (NOTE 3)
0.09 - 0.20 (0.004 - 0.008) (NOTE 2)
0.35 - 0.50 0.90 - 1.30 (0.014 - 0.020) (0.035 - 0.051) FIVE PLACES (NOTE 2)
1.90 (0.074) REF
0.95 (0.037) REF
S5 SOT-23 0599
S6 Package 6-Lead Plastic SOT-23
(LTC DWG # 05-08-1634)
0.09 - 0.20 (0.004 - 0.008) (NOTE 2)
0.35 - 0.50 0.90 - 1.30 (0.014 - 0.020) (0.035 - 0.051) SIX PLACES (NOTE 2)
1.90 (0.074) REF
0.95 (0.037) REF
S6 SOT-23 0898
S8 Package 8-Lead Plastic Small Outline (Narrow 0.150)
(LTC DWG # 05-08-1610)
0.189 - 0.197* (4.801 - 5.004) 0.053 - 0.069 (1.346 - 1.752) 8 0.004 - 0.010 (0.101 - 0.254) 0.228 - 0.244 (5.791 - 6.197) 0.150 - 0.157** (3.810 - 3.988) 7 6 5
0.050 (1.270) BSC
SO8 1298
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2050i LT/TP 1199 4K * PRINTED IN USA
(c) LINEAR TECHNOLOGY CORPORATION 1999

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