STMicroelectronics TS912AIN

Overview

TS912AIN from STMicroelectronics is a rail-to-rail input/output CMOS dual operational amplifier designed for precision signal conditioning in single-supply systems. It operates from 2.7 V to 16 V, delivers 200 μA per amplifier supply current at 3 V, features 1 pA typical input bias current, 2 mV max input offset voltage (TS912A grade), and supports 600 Ω load drive - used in battery-powered sensor front-ends and industrial analog monitoring circuits.

For engineers reviewing the TS912AIN datasheet, TS912AIN pinout, TS912AIN application, or TS912AIN equivalent, key selection criteria include rail-to-rail output swing under 600 Ω loads, ultra-low input bias current for high-impedance sources, temperature-stable offset performance across -40 °C to +125 °C, and SO-8/DIP8 package compatibility with legacy PCB layouts.

Technical Context

The TS912AIN implements a complementary CMOS input stage enabling rail-to-rail common-mode input range (VCC− −0.2 V to VCC+ +0.2 V) and output swing within 30–400 mV of both rails depending on load. Its internal current-limiting circuit caps source/sink output current at ~40 mA (at 3 V) and ensures latch-up immunity per JEDEC JESD78.

It uses a two-stage transconductance architecture with dominant-pole compensation, delivering 0.8–1.4 MHz gain-bandwidth product (dependent on supply and load), 30–40° phase margin, and 0.3–1.3 V/μs slew rate. Input noise is 30 nV/√Hz at 1 kHz, and channel separation exceeds 120 dB at 1 kHz.

Key Specifications

Pinout & Package

Dual op-amp in 8-pin DIP (plastic through-hole) or SO-8 (surface-mount) package; RoHS-compliant ECOPACK® construction. Pin numbering follows standard dual op-amp layout (top view).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TS912ID, TS912AIN provides tighter offset and lower drift for precision DC-coupled stages; versus MCP6022-I/SN, it trades bandwidth for femtoampere-level input bias essential in electrochemical and piezoelectric sensing.

Availability

TS912AIN is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, battery-powered data loggers, and medical instrumentation front-ends requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for TS912AIN 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, power, microcontroller, and sensor solutions for industrial, automotive, and consumer markets.

The TS912 series belongs to ST's precision analog portfolio, engineered specifically for rail-to-rail performance in resource-constrained, single-supply industrial and medical systems where low power, high input impedance, and wide voltage range are critical.

FAQ

What is the maximum load capacitance the TS912AIN can drive without instability?

The TS912AIN remains unity-gain stable with up to 100 pF capacitive load when driving 10 kΩ, as verified in Figure 8 (gain/phase vs. frequency). For loads exceeding 100 pF or lower resistive loads (e.g., 600 Ω), external isolation resistance (≥100 Ω) is required between output and capacitance to maintain ≥30° phase margin per Figure 11 and Figure 13.

Does TS912AIN support true dual-supply operation with negative voltage on pin 4?

Yes - pin 4 (VCC−) accepts voltages down to −0.3 V absolute maximum, and the device is fully specified for dual-supply operation (e.g., ±5 V or ±8 V) with rail-to-rail input common-mode range extending 0.2 V beyond each rail. Common-mode range is VCC− −0.2 V to VCC+ +0.2 V per Table 2.

How does the output short-circuit current limit behave under thermal stress?

The internal current-limit circuit clamps output current to ~40 mA (source/sink) at 3 V, rising to ~75 mA at 10 V. Under sustained short-circuit, junction temperature rises per R_thJA = 85 °C/W (DIP8); thermal shutdown is not integrated, so external current limiting or duty-cycle control is required for continuous fault conditions.

Is the TS912AIN pin-compatible with legacy TS912IN or TS912ID devices?

Yes - all TS912x variants (IN, AIN, ID, AID) share identical DIP8 and SO-8 footprints and pin functions. The "A" suffix denotes improved offset (2 mV max) and drift (5 µV/°C), but electrical pin behavior, supply range, and thermal specs remain fully compatible for drop-in replacement in existing designs.