INA2133UG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The INA2133UG4 is a dual differential amplifier from Texas Instruments with a 1.5 MHz bandwidth, 80 dB minimum CMRR, and a fixed gain of 1 V/V in a 14-pin SOIC package. It is designed for accurate differential signal amplification in data acquisition, instrumentation, and bridge sensor conditioning applications.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 14
- Lifecycle
- OBSOLETE
- Datasheet
- INA2133UG4 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
What are the key features of INA2133UG4?
- Dual independent differential amplifiers in a single 14-pin SOIC
- 1.5 MHz -3 dB bandwidth for wideband differential signal processing
- 80 dB minimum common-mode rejection ratio (90 dB typical)
- Fixed unity gain (1 V/V) simplifies PCB layout with no external resistors
- Input offset voltage max 750 µV for low-error measurements
- Wide supply range: ±2.25 V to ±18 V
- Frequency compensation for stable operation with capacitive loads
- Low quiescent current for power-sensitive signal chain designs
What is INA2133UG4 used for?
The INA2133UG4 excels in bridge sensor signal conditioning circuits for industrial weighing systems and pressure transducers, where its high CMRR of 90 dB typical rejects supply and ground noise before analog-to-digital conversion. Its dual-channel design enables simultaneous differential amplification of two sensor outputs with matched characteristics, simplifying multi-axis force or torque measurement platforms. Data acquisition front ends and test-and-measurement instruments also leverage its 1.5 MHz bandwidth to accurately capture fast-changing differential signals without the complexity of external gain-setting resistors.
What are the specifications of INA2133UG4?
| YTEOL | 0 |
| Amplifier Type | OPERATIONAL AMPLIFIER |
| Architecture | VOLTAGE-FEEDBACK |
| Common-mode Reject Ratio-Min | 80dB |
| Common-mode Reject Ratio-Nom | 90dB |
| Frequency Compensation | YES |
| Input Offset Voltage-Max | 750 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,.25 |
| 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 | 5V/us |
| Supply Current-Max | 1.2mA |
| 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 |
| Unity Gain BW-Nom | 1500 |
| Wideband | NO |
| 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 |
Where can I find the INA2133UG4 datasheet?
INA2133UG4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for INA2133UG4?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What CMRR performance does the INA2133UG4 provide and why does it matter for bridge sensor applications?
The INA2133UG4 achieves a minimum 80 dB CMRR (90 dB typical), meaning it attenuates common-mode interference such as 50/60 Hz mains noise by a factor of at least 10,000:1 relative to the differential signal. In bridge sensor applications this prevents supply-coupled noise from masking small millivolt-level outputs from strain gauges or pressure transducers.
How does the fixed unity gain of the INA2133UG4 simplify PCB design compared to instrumentation amplifiers with external gain resistors?
Because the INA2133UG4 operates at a fixed gain of 1 V/V, no external precision resistors are needed to set gain, eliminating resistor mismatch errors that degrade CMRR and reducing the component count by 4 or more resistors per channel. This also removes the layout constraint of placing tight-tolerance 0.1% resistors symmetrically around the amplifier to maintain 80 dB CMRR across temperature.
What supply voltage range does the INA2133UG4 support and which system rails can drive it directly?
The INA2133UG4 operates from ±2.25 V to ±18 V split supplies or equivalently from 4.5 V to 36 V single-supply, making it compatible with standard ±5 V, ±12 V, and ±15 V analog instrument rails. This flexibility allows direct integration into both bench instrumentation and embedded systems without dedicated supply conversion.
When would a designer choose the INA2133UG4 over a single-channel INA133 for a two-axis force measurement system?
Choosing the dual INA2133UG4 over two separate INA133 devices saves one 14-pin SOIC footprint and reduces PCB area by approximately 50%, while providing matched channel-to-channel offset and bandwidth characteristics that improve cross-axis measurement consistency. The dual package is particularly advantageous in compact handheld torque wrenches or robotic joint sensors where board space is at a premium.
What bandwidth limitation should designers consider when using the INA2133UG4 to amplify fast transient differential signals?
The INA2133UG4 has a -3 dB bandwidth of 1.5 MHz at unity gain, which limits its ability to pass signals above that frequency without attenuation. For applications capturing sub-microsecond transients or operating at frequencies above 500 kHz, designers should verify that the signal of interest remains well within the 1.5 MHz passband or consider a higher-bandwidth differential amplifier.
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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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