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Texas Instruments INA2332AIPWR
- Part No.:
- INA2332AIPWR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
INA2332AIPWR.pdf
- Description:
- IC INST AMP 2 CIRCUIT 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,638
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Product details
Overview
INA2332AIPWR from Texas Instruments is a dual-channel, rail-to-rail output, low-power CMOS instrumentation amplifier in TSSOP-14 package, configured with internal gain of 5 V/V and supporting external gain up to 1000 V/V via resistor network. It delivers 2.0 MHz bandwidth, 5 V/µs slew rate, and 73 dB DC CMRR, optimized for precision sensor signal conditioning in battery-powered industrial and medical systems.
For engineers reviewing the INA2332AIPWR datasheet, INA2332AIPWR pinout, INA2332AIPWR application, or INA2332AIPWR equivalent, key selection criteria include its dual-channel architecture, shutdown current of 0.01 µA per channel, –55°C to +125°C operating range, and TSSOP-14 thermal resistance (θJA = 150°C/W), critical for high-density PCB layouts and extended-temperature deployments.
Technical Context
The INA2332AIPWR implements a three-op-amp instrumentation amplifier topology with an integrated gain stage and dedicated shutdown control per channel. Its input stage features ultra-low bias current (±0.5 pA typical) and high input impedance (1013 Ω || 3 pF), enabling direct interfacing with high-impedance sensors without signal degradation.
Each channel supports independent reference voltage configuration (REFA/REFB) and rail-to-rail output swing (within 25 mV of rails at G ≥ 10), with common-mode input range extending to (V+ – 1.2 V) and down to functionally dependent lower limits governed by REF voltage. Shutdown transitions occur in nanoseconds with <2 µA quiescent draw.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Accuracy | ±0.07% at G = 5, enabling precise bridge sensor scaling without post-calibration trimming |
| CMRR | 73 dB DC, 50 dB at 45 kHz - rejects line noise and harmonics in noisy industrial environments |
| Bandwidth | 2.0 MHz at G = 25 - sufficient for direct driving of sampling ADCs up to 500 kHz |
| Quiescent Current | 415 µA per channel max - enables multi-channel battery operation with microamp-level sleep states |
| Input Bias Current | ±0.5 pA typical - eliminates loading error on thermocouples, RTDs, and piezoelectric sensors |
| Operating Temp Range | –55°C to +125°C - qualified for under-hood automotive and field-deployed utility metering |
| Output Swing | Rail-to-rail within 25 mV at G ≥ 10 into 10 kΩ - maximizes dynamic range in single-supply 2.7–5.5 V systems |
Pinout & Package
TSSOP-14 (PW) package: 4.4 mm × 5.0 mm body, 0.65 mm pitch, 1.2 mm max height, moisture sensitivity level 2 (260°C peak reflow), RoHS-compliant NiPdAu finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 14 | Shutdown A / Shutdown B | Digital control inputs; pull below 0.8 V (at V+ = 5 V) to disable respective channel and reduce IQ to 0.01 µA |
| 2, 13 | VOUTA / VOUTB | Amplified differential outputs referenced to corresponding REF pins; rail-to-rail capable at G ≥ 10 |
| 3, 12 | REFA / REFB | Zero-output reference points; define DC offset and affect common-mode input range; require low-impedance drive |
| 4, 11 | V+ | Positive supply rail; supports 2.7–5.5 V operation; decoupling required within 1 cm for stability |
| 5, 10 | V– | Negative supply rail; tied to ground in single-supply configurations; establishes input/output voltage boundaries |
| 6, 9 | VIN–A / VIN–B | Inverting inputs; high-impedance nodes requiring matched bias return paths to avoid CMR degradation |
| 7, 8 | VIN+A / VIN+B | Non-inverting inputs; paired with VIN– for differential sensing; ESD-protected to ±0.5 V beyond rails |
Key Features
| Feature | Design Value |
|---|---|
| Low-cost CMOS process | Enables sub-$2 pricing in volume while maintaining 0.07% gain accuracy and 73 dB CMRR |
| Programmable gain | G = 5 + 5(R2/R1) supports >5 V/V gains using standard 0.1% resistors without redesigning core IC |
| Ultra-low power shutdown | 0.01 µA per channel draw allows duty-cycled multi-sensor arrays with microsecond wake-up latency |
| Wide temperature qualification | Full parametric testing across –55°C to +125°C ensures reliability in aerospace, oil/gas, and automotive applications |
| High-impedance input stage | 1013 Ω || 3 pF input impedance prevents loading of high-Z sources like pH electrodes and MEMS sensors |
Applications
| Industrial Sensor Amplifiers | Physiological Signal Acquisition |
|---|---|
|
Use Scenario: Amplifying millivolt-level outputs from strain-gauge bridges in load cells and pressure transducers operating from 3.3 V battery supplies. IC Role / Device Role / Timing Role: Dual-channel INA2332AIPWR provides matched gain and offset performance across two independent sensor channels with shared supply and layout efficiency. Use Value: 73 dB CMRR suppresses 50/60 Hz mains interference; 2.0 MHz bandwidth captures transient mechanical events without phase lag. |
Use Scenario: Front-end amplification of ECG signals from limb electrodes in portable fitness monitors with real-time heart-rate extraction. IC Role / Device Role / Timing Role: INA2332AIPWR acts as first-stage instrumentation amplifier with REFA/REFB set to mid-supply for bipolar signal swing and common-mode rejection. Use Value: ±0.5 pA input bias current prevents electrode polarization drift; shutdown mode extends battery life during idle periods between measurements. |
| A/D Converter Signal Conditioning | Field Utility Meters |
|
Use Scenario: Driving ADS7818 12-bit SAR ADC in low-power data acquisition modules requiring <1 µs settling time at 0.1% accuracy. IC Role / Device Role / Timing Role: INA2332AIPWR serves as precision buffer and gain stage directly coupled to ADC input, eliminating external op-amp buffering. Use Value: 1.7 µs 0.1% settling time at G = 25 and CL = 100 pF ensures full-scale conversion fidelity; rail-to-rail output matches ADC input range. |
Use Scenario: Isolating and amplifying current-sense shunt voltages in three-phase smart electricity meters deployed in outdoor substations. IC Role / Device Role / Timing Role: Dual-channel INA2332AIPWR conditions phase A/B current signals simultaneously, leveraging matched channel specs for inter-phase error cancellation. Use Value: –55°C to +125°C rating ensures metrology-grade accuracy across seasonal ambient extremes; low IQ enables auxiliary power harvesting from current transformers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar instrumentation amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA2128UA | Single-supply only; 1.5 MHz BW; 0.1% gain error; SOIC-16 package | Lacks dual-channel integration and shutdown; higher gain error impacts precision bridge measurement | Select when cost-sensitive single-channel designs prioritize footprint over channel matching |
| AD8422ARZ | Higher precision (0.001% gain error); 10 MHz BW; 120 dB CMRR; SOIC-8 | Higher power (1.2 mA/ch); no shutdown; narrower temp range (–40°C to +85°C) | Choose for lab-grade instrumentation where bandwidth and CMRR outweigh battery-life requirements |
Compared with INA2128UA and AD8422ARZ, the INA2332AIPWR uniquely balances dual-channel integration, micropower shutdown, wide temperature operation, and cost-effective precision-making it optimal for embedded industrial and portable medical systems where channel matching, power budget, and environmental robustness are co-constrained.
Availability
INA2332AIPWR is available at Aetrix Electronics and suitable for industrial sensor amplifiers, physiological signal acquisition, A/D converter signal conditioning, and field utility meters requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for INA2332AIPWR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with over 50 years of innovation in precision signal chain components.
The INA2332AIPWR belongs to TI's low-power instrumentation amplifier product line, engineered specifically for high-accuracy, low-quiescent-current signal conditioning in battery-operated and thermally demanding applications.
FAQ
What is the maximum gain achievable with the INA2332AIPWR?
The INA2332AIPWR supports externally programmable gain from 5 V/V up to 1000 V/V using the equation G = 5 + 5(R2/R1). At G = 1000, bandwidth reduces to ~10 kHz, and stability requires careful attention to feedback capacitor placement and PCB layout parasitics. The internal 5 V/V gain remains fixed and unmodified by external resistors.
Does the INA2332AIPWR support single-supply operation?
Yes, the INA2332AIPWR operates from a single +2.7 V to +5.5 V supply. Its rail-to-rail output stage and input common-mode range extending to (V+) – 1.2 V enable full-swing operation in single-ended systems. Reference pins (REFA/REFB) must be biased within the valid range-typically at V+/2 for symmetric signal handling-and require low-impedance drive to preserve CMRR.
How does the shutdown feature work on the INA2332AIPWR?
The INA2332AIPWR has independent shutdown pins (pins 1 and 14) for each channel. Pulling either pin below 0.8 V (with V+ = 5 V) disables the corresponding amplifier, reducing quiescent current to 0.01 µA per channel. Recovery to full operation occurs in microseconds. During shutdown, the output enters high-impedance state-enabling multiplexed sensor architectures without cross-talk.
What is the recommended decoupling for the INA2332AIPWR?
Texas Instruments specifies 0.1 µF ceramic capacitors placed as close as possible to pins 4 (V+) and 5 (V–), with short traces and direct connection to low-inductance ground planes. For noisy environments or high-impedance sources, add a 10 µF tantalum or aluminum electrolytic capacitor in parallel. Avoid shared vias between supply and ground decoupling paths to prevent ground bounce coupling into sensitive inputs.
Can the INA2332AIPWR drive capacitive loads directly?
The INA2332AIPWR can drive capacitive loads up to 100 pF while maintaining stability and 0.1% settling time of 1.7 µs at G = 25. For loads >100 pF (e.g., ADC input capacitance), external compensation-such as a feedback capacitor across RF per Figure 8 in SBOS216B-is required. Uncompensated heavy capacitive loading causes overshoot, ringing, and degraded settling behavior.
INA2332AIPWR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Instrumentation
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 5V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 2 MHz
- Current - Input Bias:
- 0.5 pA
- Voltage - Input Offset:
- 2 mV
- Current - Supply:
- 415µA (x2 Channels)
- Current - Output / Channel:
- 48 mA
- Voltage - Supply Span (Min):
- 2.5 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-TSSOP
INA2332AIPWR FAQ
1.How can I place an order for INA2332AIPWR through Aetrix?
Please submit a Request for Quotation (RFQ) for INA2332AIPWR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for INA2332AIPWR reliable?
The price and inventory of INA2332AIPWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for INA2332AIPWR is usually 5 days.
3.What payment methods are accepted for INA2332AIPWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for INA2332AIPWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for INA2332AIPWR?
INA2332AIPWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your INA2332AIPWR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for INA2332AIPWR?
For technical support, including INA2332AIPWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your INA2332AIPWR requirements.
6.How does Aetrix verify that INA2332AIPWR is sourced from the original manufacturer or authorized distributors?
All INA2332AIPWR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that INA2332AIPWR meets industry standards.
7.What is the process for return or replacement of INA2332AIPWR?
All INA2332AIPWR units undergo pre-shipment inspection (PSI). If there is an issue with INA2332AIPWR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The INA2332AIPWR part is unused and in its original packaging.
Return procedure for INA2332AIPWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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