INA2143UE4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
INA2143UE4 is a dual precision differential amplifier with selectable gain of 10 or 0.1 and 96 dB typical CMRR in a 14-pin SOIC package. Offers 80 dB minimum common-mode rejection and 150 kHz bandwidth for accurate differential signal conditioning. From $3.20 in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 14
- Lifecycle
- OBSOLETE
- Datasheet
- INA2143UE4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -55.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Dual differential amplifier with selectable gain of 10 or 0.1 for signal amplification or attenuation in a single 14-pin SOIC package
- 96 dB typical CMRR (80 dB minimum) with 500 µV maximum input offset voltage for precision common-mode noise rejection
- 150 kHz bandwidth (3 dB) with voltage-feedback architecture and internal frequency compensation for stable single-supply differential measurements
Applications
INA2143UE4 is suited for precision differential signal conditioning in data acquisition systems, bridge sensor amplifiers, and industrial current-sensing circuits where high common-mode rejection is required. Its dual-channel configuration and gain-of-10 setting make it effective for amplifying small differential signals from Wheatstone bridge pressure or load-cell sensors prior to ADC digitization.
Specifications
| Pbfree Code | Yes |
| YTEOL | 0 |
| Amplifier Type | OPERATIONAL AMPLIFIER |
| Architecture | VOLTAGE-FEEDBACK |
| Bandwidth (3dB)-Nom | 0.15MHz |
| Common-mode Reject Ratio-Min | 80dB |
| Common-mode Reject Ratio-Nom | 96dB |
| Frequency Compensation | YES |
| Input Offset Voltage-Max | 500 µV |
| JESD-30 Code | R-PDSO-G14 |
| JESD-609 Code | e4 |
| Low-Bias | NO |
| Low-Offset | YES |
| Micropower | NO |
| Neg Supply Voltage Limit-Max | -18 V |
| Neg Supply Voltage-Nom (Vsup) | -5 V |
| Number of Functions | 2 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP14,.3 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Packing Method | TUBE |
| Peak Reflow Temperature (Cel) | 260 |
| Power | NO |
| Programmable Power | NO |
| Qualification Status | Not Qualified |
| Slew Rate-Nom | 4.5V/us |
| Supply Current-Max | 2.4mA |
| Supply Voltage Limit-Max | 18V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | BIPOLAR |
| Temperature Grade | MILITARY |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Voltage Gain-Max | 10 |
| Voltage Gain-Min | 0.1 |
| Voltage Gain-Nom | 10 |
| Wideband | NO |
| ## INA2143UE4 Alternates Showing results | Image |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 3 |
| ECCN | EAR99 |
| HTS Code | 8542.33.00.01 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for INA2143UE4:
Amplifier, 2 Func, 250uV Offset-Max, 0.15MHz Band Width, BIPolar, PDSO14
suggested
suggested
Frequently Asked Questions
What gain options does INA2143UE4 provide, and how does selecting gain of 0.1 benefit a signal-conditioning chain?
INA2143UE4 offers two precision gain settings: G = 10 for amplifying small differential signals and G = 0.1 for attenuating large differential voltages to within ADC input range. At G = 0.1, a 50 V differential signal is scaled to 5 V, allowing a standard 0 V to 5 V ADC to digitize high-voltage differential buses without external voltage dividers, preserving the 96 dB CMRR characteristic across the full input range.
How does INA2143UE4's 96 dB CMRR performance benefit a noisy industrial measurement environment?
With 96 dB typical common-mode rejection ratio, INA2143UE4 attenuates common-mode noise by a factor of approximately 63,000:1. In a 50 Hz industrial environment with 1 V common-mode hum on a 4-wire bridge sensor, the amplifier reduces that noise contribution at the output to below 16 µV, keeping it far below the 500 µV maximum offset voltage and ensuring measurement errors below 0.1 % for 10 mV full-scale bridge outputs.
What bandwidth does INA2143UE4 support at G=10, and is it sufficient for audio or control-loop signal conditioning?
INA2143UE4 provides a 3 dB bandwidth of 150 kHz at G = 10. This bandwidth supports audio signal paths up to 20 kHz with over 17 dB of gain margin, and is adequate for industrial PID control loops with bandwidths below 10 kHz. For sensor conditioning in data acquisition systems sampling at 100 kHz or below, the 150 kHz bandwidth ensures flat gain response with less than 0.1 dB roll-off at the Nyquist frequency.
How does using a dual amplifier like INA2143UE4 compare to two separate single-channel differential amplifiers on a PCB?
INA2143UE4 integrates 2 matched differential amplifiers in a single 14-pin SOIC package (8.65 mm × 3.9 mm), saving approximately 50 % PCB area compared to two discrete single-channel SOICs. Monolithic integration also guarantees better gain and offset matching between channels, typically within 0.1 % gain accuracy, which is important in balanced two-channel measurement systems such as stereo audio attenuators or dual-rail power monitors operating at 80 dB CMRR minimum.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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