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Home > Products > Integrated Circuits (ICs) > Linear > Instrumentation, Op Amps, Buffer Amps

STMicroelectronics TS932AIN

Name: TS932AIN
Brand: STMicroelectronics
SKU: TS932AIN
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TS932AIN

Manufacturer:: STMicroelectronics

Category:: Instrumentation, Op Amps, Buffer Amps

Package:: 8-DIP (0.300", 7.62mm)

Datasheet:: TS932AIN.pdf

Description:: IC OPAMP GP 2 CIRCUIT 8MINI DIP

Quantity:: RFQ Add To RFQ list

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Inventory:1,560

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Product details

Overview

TS932AIN from STMicroelectronics is a dual rail-to-rail output micropower operational amplifier designed for low-voltage, battery-powered signal conditioning. It operates from 2.7 V to 10 V single supply, consumes only 20 μA per amplifier (typ), delivers 2.9 Vpp output swing at 3 V supply into 100 kΩ, and features ultra-low input bias current (1 pA typ) and low offset voltage (2 mV max for TS932B grade). It is used in portable PH meters and digital scales requiring precision, low-power analog front-ends.

For engineers reviewing the TS932AIN datasheet, TS932AIN pinout, TS932AIN application, or TS932AIN equivalent, key selection criteria include rail-to-rail output drive capability at sub-3 V operation, micropower consumption under 30 μA per channel, CMOS input stage compatibility with high-impedance sensors, and SO-8 package thermal performance (R_thJA = 125 °C/W).

Technical Context

The TS932AIN implements a CMOS-input, rail-to-rail output op-amp architecture optimized for single-supply operation down to 2.7 V. Its input stage provides 1 pA typical bias current and 85 dB common-mode rejection over the full operating temperature range (–40 °C to +105 °C), enabling direct interfacing with high-impedance pH electrodes and load cells.

Internally compensated with 100 kHz gain-bandwidth product and 50 V/ms slew rate, it supports stable unity-gain follower configurations with 65° phase margin into 50 pF capacitive loads - critical for driving ADC input filters or long PCB traces in portable instrumentation.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage	2.7 V to 10 V single supply - enables direct use with Li-ion, alkaline, or coin-cell batteries without regulation.
Supply Current	20 μA per amplifier (typ) - extends battery life beyond 1 year in always-on smoke detector sensor nodes.
Input Bias Current	1 pA (typ) - preserves signal integrity when amplifying nanoamp-level currents from pH electrodes or photodiodes.
Output Swing	Rail-to-rail, 2.95 V at V_CC = 3 V / R_L = 100 kΩ - maximizes dynamic range for 10-bit+ ADCs in 3 V systems.
Input Offset Voltage	2 mV (max, TS932B grade) - ensures ≤0.1% gain error in 100 mV full-scale sensor interfaces.
Gain Bandwidth	100 kHz - sufficient for DC–10 kHz sensor signal conditioning including thermocouples and strain gauges.
ESD Protection	2 kV HBM - meets IEC 61000-4-2 Level 2 for handheld device robustness.

Pinout & Package

TS932AIN is housed in an SO-8 package (8-pin small outline integrated circuit) with standard 1.27 mm pitch, 4.9 mm × 6.0 mm body, and R_thJA = 125 °C/W. This RoHS-compliant ECOPACK® package supports automated reflow assembly and provides thermal stability for continuous operation at +105 °C ambient.

Pin/Terminal	Circuit Role	Design Meaning
1	Inverting Input (Amplifier 1)	High-impedance CMOS node accepting differential signals from sensors or feedback networks.
2	Non-inverting Input (Amplifier 1)	Accepts reference or sensor signal; bias current <1 pA minimizes voltage drop across high-Z sources.
3	Output (Amplifier 1)	Rail-to-rail capable driver delivering up to ±1.5 mA into 100 kΩ load at 3 V supply.
4	V_CC– (Ground)	Power return path; must be low-impedance to maintain PSRR >85 dB across 10 Hz–10 kHz.
5	V_CC+ (Supply)	Single positive supply input; accepts 2.7–10 V; decoupling capacitor required within 5 mm.
6	Non-inverting Input (Amplifier 2)	Independent input for second channel; identical electrical specs to Pin 2.
7	Inverting Input (Amplifier 2)	Independent input for second channel; identical electrical specs to Pin 1.
8	Output (Amplifier 2)	Second rail-to-rail output; usable for dual-sensor buffering or active filtering stages.

Key Features

Feature	Design Value
Rail-to-rail output	Delivers 2.95 V swing at 3 V supply into 100 kΩ - preserves >98% of ADC input range without level-shifting.
Micropower operation	20 μA per amplifier (typ) - allows integration into multi-channel sensor hubs with <100 μA total quiescent budget.
Ultra-low input bias current	1 pA (typ) - eliminates measurable error when amplifying signals from glass pH electrodes (≥1 GΩ source impedance).
Automotive-grade option	TS932BIDT variant qualified to AEC-Q100 Grade 2 (–40 °C to +105 °C) - suitable for cabin air quality sensor modules.
CMOS input stage	Enables direct connection to high-impedance bridges and piezoresistive elements without guard traces or bias resistors.

Applications

pH Meter Front-End

Digital Scale Signal Chain

Use Scenario: Amplifying mV-level output from glass pH electrode in handheld water quality tester.

IC Role / Device Role / Timing Role: Precision DC-coupled buffer and gain stage with ultra-high input impedance.

Use Value: 1 pA input bias prevents electrode polarization drift; rail-to-rail output drives 3 V ADC without external level shifters.

Use Scenario: Conditioning microvolt signals from strain gauge bridge in battery-powered kitchen scale.

IC Role / Device Role / Timing Role: Low-noise, micropower instrumentation amplifier front-end (with external resistors).

Use Value: 2 mV max offset ensures ≤0.5% measurement error at 200 g full scale; 20 μA supply current enables 2-year battery life.

Smoke Detector Sensor Interface

Portable Gas Sensor Signal Conditioning

Use Scenario: Amplifying photocurrent from ionization chamber in residential smoke alarm.

IC Role / Device Role / Timing Role: Transimpedance amplifier converting pA-level current to measurable voltage.

Use Value: Sub-pA bias current avoids signal loss across 10 GΩ feedback resistor; 2.7 V min supply allows direct use of 3 V lithium primary cell.

Use Scenario: Signal conditioning for electrochemical CO sensor in wearable air quality monitor.

IC Role / Device Role / Timing Role: Low-drift, low-power transducer interface with built-in reference buffer.

Use Value: 3 μV/°C offset drift maintains calibration stability across –10 °C to +50 °C operating range; SO-8 footprint simplifies layout in compact PCBs.

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual micropower op-amp applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MCP6022-I/SN	Higher supply current (100 μA/ch), wider GBW (1 MHz), no automotive qualification	Better for higher-speed sensor interfaces but unsuitable for multi-year battery life targets	Select when bandwidth >100 kHz is required and power budget allows ≥5× higher quiescent draw
TLV2462IDR	Higher input offset (3 mV max), lower ESD rating (1.5 kV HBM), same SO-8 package	Acceptable for cost-sensitive industrial sensors where 0.1% offset error is tolerable	Select for non-automotive, non-medical applications where BOM cost reduction outweighs precision requirements

Compared with MCP6022-I/SN and TLV2462IDR, TS932AIN uniquely balances sub-30 μA quiescent current, 2 mV max offset, and AEC-Q100 qualification - making it the only choice for automotive cabin air sensors or medical-grade portable diagnostics requiring both longevity and accuracy.

Availability

TS932AIN is available at Aetrix Electronics and suitable for battery-powered systems, portable communication systems, and automotive cabin air quality monitoring requiring stable component supply across extended temperature ranges and multi-year production cycles.

Supply support for TS932AIN 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing analog, MCU, power, and sensor solutions for industrial, automotive, and consumer markets.

The TS93x series belongs to ST's precision analog portfolio, engineered specifically for ultra-low-power, high-impedance sensor signal conditioning in space-constrained, battery-operated equipment.

FAQ

What is the maximum operating junction temperature for TS932AIN?

The absolute maximum junction temperature is 150 °C, with a rated operating free-air temperature range of –40 °C to +105 °C. Thermal resistance junction-to-ambient is 125 °C/W in SO-8 package, so at 20 μA supply current and 3 V supply, power dissipation remains below 60 μW - well within safe limits even at full ambient temperature.

Does TS932AIN support true rail-to-rail input?

No - TS932AIN features rail-to-rail *output* only. Its common-mode input voltage range is specified as V_CC– – 0.2 V to V_CC+ – 1.5 V, meaning it cannot accept inputs within 1.5 V of the positive rail. This limitation is intentional to preserve CMOS input stage integrity and low bias current at low supply voltages.

Can TS932AIN drive capacitive loads directly?

Yes, but with limitations: it is internally compensated for stable operation with up to 50 pF capacitive load (65° phase margin). For loads >50 pF - such as ADC input sampling capacitors or long cables - a series isolation resistor (≥100 Ω) is required between output and capacitance to prevent peaking or oscillation.

Is there a lead-free and RoHS-compliant version of TS932AIN?

Yes - TS932AIN is manufactured in ST's ECOPACK®-compliant SO-8 package, meeting RoHS Directive 2011/65/EU and REACH SVHC requirements. The "AIN" suffix denotes standard industrial-grade, lead-free, halogen-free packaging with matte tin lead finish and 260 °C reflow profile compatibility.

TS932AIN Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 8-DIP (0.300", 7.62mm)

Packaging:: Tube

Product Status:: Obsolete

Amplifier Type:: General Purpose

Number of Circuits:: 2

Output Type:: Rail-to-Rail

Slew Rate:: 0.05V/µs

Gain Bandwidth Product:: 100 kHz

-3db Bandwidth:: -

Current - Input Bias:: 1 pA

Voltage - Input Offset:: 3 mV

Current - Supply:: 20µA (x2 Channels)

Current - Output / Channel:: 5 mA

Voltage - Supply Span (Min):: 2.7 V

Voltage - Supply Span (Max):: 10 V

Operating Temperature:: -40°C ~ 105°C

Grade:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Through Hole

Supplier Device Package:: 8-Mini DIP

TS932AIN FAQ

1.How can I place an order for TS932AIN through Aetrix?

Please submit a Request for Quotation (RFQ) for TS932AIN 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 TS932AIN reliable?

The price and inventory of TS932AIN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS932AIN is usually 5 days.

3.What payment methods are accepted for TS932AIN?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS932AIN transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TS932AIN?

TS932AIN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TS932AIN 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 TS932AIN?

For technical support, including TS932AIN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS932AIN requirements.

6.How does Aetrix verify that TS932AIN is sourced from the original manufacturer or authorized distributors?

All TS932AIN 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 TS932AIN meets industry standards.

7.What is the process for return or replacement of TS932AIN?

All TS932AIN units undergo pre-shipment inspection (PSI). If there is an issue with TS932AIN, 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 TS932AIN part is unused and in its original packaging.

Return procedure for TS932AIN:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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