INA2133UA - Dual 1.5MHz Difference Amplifier | Texas Instruments
MPN: INA2133UA ✓ NakahandaINA2133UA Ulas
A difference amplifier is a specialized amplifier IC that subtracts two input voltages and amplifies the resulting differential signal. Its internal resistor network establishes the gain and improves common-mode rejection when the paired resistors track closely over temperature. The INA2133 belongs to the difference-amplifier hierarchy, where precision difference amplifier is a subtype of instrumentation amplifier and analog signal-conditioning IC.
The manufacturer describes the INA2133 as a high-speed, precision difference amplifier built from a precision operational amplifier and a laser-trimmed resistor network. The INA2133UA provides a maximum input offset voltage of 450 µV, low offset-voltage drift, and maximum gain error of 0.05%. Its 1.5 MHz bandwidth supports higher-frequency signal paths than a slow precision difference amplifier while retaining the gain accuracy required for bridge and sensor measurements.
The integrated resistor network is designed for accurate gain and high common-mode rejection. Excellent resistor temperature-coefficient tracking helps maintain gain accuracy and common-mode rejection over temperature. The dual configuration allows two matched differential channels in one package, reducing board area compared with two separate single-channel devices. The manufacturer also offers the related INA133 family in the same high-speed precision difference-amplifier datasheet.
Typical uses include bridge-transducer signal extraction, differential sensor measurement, current-shunt monitoring, instrumentation, and factory-automation signal conditioning. The device is particularly suitable when a small differential voltage must be measured in the presence of a larger common-mode voltage and when a unity-gain difference-amplifier implementation would otherwise require several passive and active components.
Design the input network, output reference, supply bypassing, and grounding to preserve common-mode rejection and bandwidth. Keep input and feedback routes compact, place bypass capacitors close to the supply pins, and use a low-noise reference for applications that require an output referenced to ground or another system voltage. Confirm the complete pin assignment and operating limits against the manufacturer datasheet before layout release.
This product page combines the manufacturer device description, package and ordering information, sourcing availability, strict drop-in alternative screening, and practical design guidance. It also distinguishes directly verifiable INA2133UA characteristics from parameters that require confirmation against the complete manufacturer datasheet before a new design is released.
Mga alternatibo na pwedeng ilagay na INA2133UA — parehas na package, pin-to-pin na katugmang. Hindi kasama ang mga bahagi ng iba't-ibang package na nangangailangan ng pagpapaayos ng PCB.
Wala ng magagamit na drop-in alternatibo para sa produkto na ito.
Hilingin ang AlternatiboINA2133UA Mga Pinakamataas na Rating at Electrical Characteristics
| Amplifier Type | Precision difference amplifier |
| Number of Channels | 2 channels |
| Gain | 1 V/V, unity gain |
| Gain Error | 0.05% maximum |
| Bandwidth | 1.5 MHz |
| Input Offset Voltage | 450 µV maximum |
| Offset Voltage Drift | 5 µV/°C maximum |
| Power Consumption | 0.95 mA |
| Packhaging | 14-SOIC, 3.90 mm width |
| Bilang ng Pin | 14 pins |
| Hanay ng Temperature na Operasyon | -55 °C to +125 °C |
| Uri ng Pagpapasok | Surface mount |
| Tindminan RoHS | unknown |
| REACH Status | unknown |
Gabay sa Pin Configuration ng INA2133UA 14-soic, 3.90 mm width
Pin configuration para sa INA2133UA (14-soic, 3.90 mm width package). Ang analog component na ito ay may input, output, at power supply pins. Sumangguni sa datasheet ng manufacturer para sa offset null, compensation, at enable pin configurations. Perpekto para sa signal conditioning at amplifier circuits.
Wala ng detalyadong pinout data na magagamit para sa INA2133UA.
Sumangguni sa datasheet para sa buong pin configuration.
Tipikal na mga Gamit
INA2133UA ay nararapat para sa 6 aplikasyons: Bridge Transducer Signal Conditioning, Current-Shunt Monitoring, Industrial Sensor Acquisition, Test and Measurement Front Ends, Factory Automation Monitoring, Audio and Communication Interfaces.
Bridge Transducer Signal Conditioning
The INA2133UA suits bridge-transducer front ends where a small differential sensor voltage appears over a larger common-mode voltage. Its 1.5 MHz bandwidth provides more signal bandwidth than a slow precision amplifier, while 450 µV maximum input offset voltage and 0.05% maximum gain error influence the measurable signal floor. The laser-trimmed resistor network supports accurate gain and common-mode rejection through temperature. Confirm the bridge excitation, input common-mode range, supply voltage, and output swing against the manufacturer datasheet before deployment.
Inirekomenda
Current-Shunt Monitoring
The INA2133UA can measure the voltage generated across a current shunt when the shunt signal is small relative to its common-mode voltage. Its unity-gain difference-amplifier architecture subtracts the two shunt terminals directly, and the 1.5 MHz bandwidth can support faster current transients than many precision instrumentation stages. The 450 µV offset specification translates into shunt-measurement error, so the shunt resistance, current range, and amplifier offset must be included in the system error budget.
Inirekomenda
Industrial Sensor Acquisition
The INA2133UA is appropriate for industrial sensor acquisition when two sensed voltages must be differenced before conversion or control. Two channels in one 14-pin SOIC can reduce board area, while the 0.05% maximum gain error and 5 µV/°C maximum offset drift support precision-oriented measurements. Protection networks, filtering, ground references, and long cable connections require separate evaluation because they can dominate offset, noise, and common-mode performance in field-installed systems.
Inirekomenda
Test and Measurement Front Ends
The INA2133UA can form the input stage of a precision measurement instrument that compares a DUT voltage with a reference or injected signal. Its 1.5 MHz bandwidth is useful for moderate-speed measurements, and the internal trimmed resistor network simplifies fixed unity-gain implementation. Input switching, relay transients, reference noise, and channel isolation can affect the result, so the amplifier should be placed close to the measured node and protected from excessive common-mode excursions.
Inirekomenda
Factory Automation Monitoring
The INA2133UA supports factory-automation monitoring by extracting small process-control signals from sensor lines with substantial common-mode voltage. The dual-channel arrangement supports two measurements in a single package, while the -55 °C to +125 °C operating-temperature range covers demanding industrial environments. Qualification for a particular production system still depends on its supply voltage, electromagnetic environment, package assembly, and applicable quality requirements.
Inirekomenda
Audio and Communication Interfaces
The INA2133UA can provide balanced-signal conditioning where a small differential audio or communication signal must be extracted from a common-mode voltage. Its 1.5 MHz bandwidth covers a useful portion of the audio and low-speed communication range, while the two channels can process complementary or independent balanced inputs. Designers should verify input noise, slew rate, output swing, channel matching, and supply limitations from the manufacturer datasheet before using the device in high-fidelity signal paths.
Inirekomenda
Buod ng mga Inirekomendang Produkto
Impormasyon ng Talumpati sa Engineering for INA2133UA — ikabit, gabay sa disenyo, at impormasyon ng pagsunod sa kautusan.
Paunawang Hanapin
Ikabit sa Mga Alternatibo
| Parametro | Ito ang Producto |
|---|---|
| Brand | Texas Instruments |
| Package | 14-SOIC |
| Channel Count | 2 channels |
| Gain | 1 V/V, unity gain |
| Bandwidth | 1.5 MHz |
| Maximum Input Offset Voltage | 450 µV |
| Maximum Offset Voltage Drift | 5 µV/°C |
| Maximum Gain Error | 0.05% |
| Power Consumption | 0.95 mA |
| Operating Temperature Range | -55 °C to +125 °C |
Talaan ng Disenyo
Keep each differential input route short and geometrically similar to minimize conversion of common-mode noise into differential error. Place input protection, filtering, and resistor networks close to the associated amplifier pins rather than extending sensitive traces across the board. Use the manufacturer pin table to preserve channel symmetry and avoid routing high-current or switching signals beneath the analog inputs.
Decouple each supply connection with the capacitance and placement specified in the manufacturer application guidance, and route each bypass capacitor directly to its intended power pin. Keep the return path short and use a quiet ground reference. Because a difference amplifier rejects common-mode signals rather than power-supply or ground disturbances, bypass effectiveness remains essential to usable noise performance.
Do not assume the 450 µV maximum input offset specification covers every system error. Include amplifier offset, offset drift, resistor-network gain error, shunt or bridge tolerance, reference error, noise, and ADC error in the measurement budget. Also verify that the input common-mode and output voltage remain within their operating limits at every corner of the signal and temperature range.
The 1.5 MHz bandwidth allows fast transients through the signal path, so input ringing and unstable feedback can affect measurements even when the desired signal is much slower. Use the manufacturer’s recommended topology and component values, keep feedback loops compact, and avoid adding large capacitance directly at high-impedance input nodes. Validate filtering with the complete source impedance and cable capacitance.
Estimated: at a 5 V supply and 0.95 mA power-consumption specification, device dissipation is approximately 4.75 mW. This is small relative to normal 14-pin SOIC thermal capability, but actual dissipation depends on the final supply voltage and operating current. At the 125 °C temperature limit, account for package thermal resistance, copper area, ambient temperature, and adjacent heat sources during worst-case analysis.
Impormasyon ng Pagsunod sa Kautusan
The available manufacturer product-page excerpt does not state the requested compliance classifications. The -55 °C to +125 °C operating-temperature range does not by itself establish AEC-Q100 qualification.