INA2132U - Dual 36V Difference Amplifier | Texas Instruments
Référence : INA2132U ✓ ActifINA2132U Présentation
A difference amplifier measures the voltage between two input nodes rather than amplifying a single node relative to ground. In the signal-chain hierarchy, the INA2132U is a difference amplifier, which is a subtype of instrumentation amplifier, and ultimately belongs to the broader amplifier and analog signal-conditioning categories. The dual-channel configuration allows one package to handle two differential sensing channels while maintaining consistent amplifier characteristics between them.
Key features include the 2.7 V to 36 V single-supply operating range, 76 dB minimum common-mode rejection, and a -40 °C to 85 °C industrial temperature rating. The low-power architecture is appropriate for systems in which every milliampere affects battery life, thermal rise, or analog headroom. A common-mode range extending below ground makes the device useful in shunt-monitoring systems where the signal may be referenced to a supply rail rather than to ground.
The INA2132U is designed for differential measurements where the useful information is small compared with the common-mode voltage. Both amplifier channels are implemented in the same device, which supports matched measurements and reduces the number of external packages required. Its SOIC package also supports conventional surface-mount assembly, although exposed-pad thermal management is not specified in the available ordering information.
Typical applications include high-side or low-side current sensing, bridge-sensor signal conditioning, battery monitoring, industrial process measurement, and differential voltage acquisition. When designing around this part, verify the signal amplitude, common-mode limits, and output-swing requirements against the application before committing the footprint.
This page combines manufacturer product information, verified distributor pricing and availability, and engineering guidance that goes beyond a basic distributor listing. It also documents where additional datasheet parameters are required so engineers can distinguish confirmed values from information that must still be checked against the manufacturer datasheet.
Alternatives de remplacement direct pour INA2132U — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
INA2132UA
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
INA2132U Valeurs maximales et caractéristiques électriques
| Number of Channels | 2 channels |
| Device Type | Dual, low-power, single-supply difference amplifier |
| Minimum Supply Voltage | 2.7 V |
| Maximum Supply Voltage | 36 V |
| Minimum Common-Mode Rejection Ratio | 76 dB |
| Minimum Common-Mode Input Voltage | -15 V |
| Maximum Common-Mode Input Voltage | 28 V |
| Gain Bandwidth Product | 300 kHz |
| Plage de température de fonctionnement | -40 °C to 85 °C |
| Boîtier | 14-pin SOIC (D), 0.154 in body width, 3.90 mm nominal width |
| Type de montage | Surface mount |
| Supply Type | Single supply |
Guide de configuration des broches du INA2132U 14-pin soic (d), 0.154 in body width, 3.90 mm nominal width
Configuration des broches du INA2132U (boîtier 14-pin soic (d), 0.154 in body width, 3.90 mm nominal width). Ce composant analogique comporte des broches d'entrée, de sortie et d'alimentation. Consultez la fiche technique du fabricant pour les configurations des broches d'annulation d'offset, de compensation et d'activation. Idéal pour le conditionnement de signaux et les circuits amplificateurs.
Aucune donnée de brochage détaillée disponible pour INA2132U.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
INA2132U convient pour 6 applications: High-Side Current Sensing, Industrial Bridge-Sensor Conditioning, Battery-Pack Voltage Monitoring, Process-Control Differential Sensing, Audio and Balanced-Signal Acquisition, Portable Sensor Interface.
High-Side Current Sensing
The INA2132U fits high-side current measurement when a small shunt voltage appears across two inputs while a substantially larger voltage is common to both nodes. Its verified 76 dB minimum CMRR suppresses common-mode disturbance from the supply bus and switching environment, while the -15 V to 28 V common-mode range permits sensing across many 36 V systems. Place the device close to the shunt and keep input routing short to limit pickup. Confirm that the shunt signal, supply voltage, and required output swing remain within the manufacturer limits.
Recommandé
Industrial Bridge-Sensor Conditioning
For resistive bridge and strain-sensor interfaces, the INA2132U measures the small differential signal generated by the sensing element while rejecting the larger excitation-related voltage appearing at both inputs. The dual 300 kHz gain-bandwidth-product device supports two measurement channels in one 14-pin SOIC package, reducing analog channel count. The 2.7 V to 36 V supply range accommodates both low-voltage portable instrumentation and industrial excitation systems. Check bridge excitation amplitude, input bias-current error, and output settling against the manufacturer datasheet.
Recommandé
Battery-Pack Voltage Monitoring
The INA2132U can monitor differential cell or pack voltages in battery systems where the sensing points sit above ground and the useful voltage is much smaller than the stack voltage. Its common-mode input range of -15 V to 28 V and 36 V maximum supply support higher-voltage industrial packs, while two channels allow simultaneous monitoring of two related voltages. The single-supply architecture simplifies system power. Verify continuous common-mode exposure, input protection, and discharge-current requirements in the target battery chemistry.
Recommandé
Process-Control Differential Sensing
Industrial process-control systems often combine a low-level sensor output with a substantial common-mode voltage. The INA2132U is appropriate for that environment because its two channels measure differential voltages in one package, its supply accepts up to 36 V, and its -40 °C to 85 °C rating covers commercial-to-industrial environments. The 76 dB minimum CMRR improves rejection of shared supply disturbance. Place sensitive input traces away from switching nodes and use a clean reference point to maximize rejection.
Recommandé
Audio and Balanced-Signal Acquisition
The INA2132U can serve as the input stage of a balanced audio receiver when the source is differential and the objective is to reject equal-magnitude hum or ground-potential differences. Its dual-channel architecture supports paired left and right signal paths, and the 76 dB minimum CMRR directly improves common-mode rejection. The INA2132UA can serve as a same-family alternative when supply and common-mode conditions match. Verify the required gain, input-noise contribution, and output swing before treating this difference amplifier as the complete audio front end.
Recommandé
Portable Sensor Interface
Battery-powered sensor nodes benefit from integrating two measurement channels without adding two separate amplifier packages. The INA2132U combines that dual-channel arrangement with a low-power, single-supply design and a minimum supply of 2.7 V, allowing operation from low-voltage rails used in portable instruments. The dual amplifier can monitor two differential sensors while sharing one package footprint. Confirm per-channel quiescent current and sleep behavior in the manufacturer datasheet because those figures were not present in the verified distributor extracts.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour INA2132U — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | INA2132UA |
|---|---|---|
| Package | 14-pin SOIC (D) | 14-pin SOIC (D) |
| Brand | Texas Instruments | Texas Instruments |
| Number of Channels | 2 channels | 2 channels |
| Minimum Supply Voltage | 2.7 V | 2.7 V |
| Maximum Supply Voltage | 36 V | 36 V |
| Minimum Common-Mode Rejection Ratio | 76 dB | 76 dB |
| Minimum Common-Mode Input Voltage | -15 V | -15 V |
| Maximum Common-Mode Input Voltage | 28 V | 28 V |
Principaux différenciateurs
- Dual differential channels with a wide single-supply operating range (vs INA2132UA)
- Common-mode input capability supports above-ground and below-ground sensing (vs INA2132UA)
- Verified 76 dB minimum common-mode rejection (vs INA2132UA)
- Dual channels in a single industrial-temperature package (vs INA2132UA)
Notes de conception
Route the two inputs of each difference-amplifier channel as a closely matched pair and connect the amplifier-side returns to the same quiet analog ground reference used by the sensing circuit. For shunt and bridge measurements, minimize the loop area between the sense taps and the input pins because inductive pickup in a high-common-mode environment directly appears as differential error. Avoid routing inputs beside switching-node copper; the 76 dB minimum CMRR reduces common-mode interference but does not eliminate pickup caused by unequal trace geometry.
Do not assume that the 36 V supply rating automatically permits 36 V at every input. The verified common-mode input range is -15 V to 28 V, so inputs exceeding 28 V require a divider, attenuation network, or additional protection. Also check the output-swing requirement and the sense-node voltage under fault conditions. The available verified extracts do not provide the complete absolute-maximum table or output-swing limits, so those values must be confirmed in the manufacturer datasheet before layout release.
Estimated: no settling-time calculation is provided because the gain, noise-gain, and output-capacitance conditions are not available in the verified extracts. Using the confirmed 300 kHz gain-bandwidth product only as an upper bandwidth reference, the usable closed-loop bandwidth will generally be lower and depends on the configured gain and noise gain. Verify settling accuracy, slew rate, output load, and stability against the datasheet before using the amplifier for high-accuracy acquisition or fast sensor sampling.
Informations de conformité
The supplied verified distributor and manufacturer extracts do not explicitly state RoHS, REACH, halogen-free, conflict-minerals, or AEC-Q100 status. The INA2132U is not identified as an automotive-qualified variant in the provided data.
