STMicroelectronics TSX562AIST

Overview

TSX562AIST from STMicroelectronics is a dual-channel, micropower, rail-to-rail input CMOS operational amplifier optimized for high-impedance sensor interfaces and automotive signal conditioning. It delivers 900 kHz gain bandwidth at 235 µA supply current per channel, 600 µV max input offset voltage (enhanced "A" grade), 1 pA typical input bias current, and operates across 3 V to 16 V supply with -40 °C to 125 °C temperature range.

For engineers reviewing the TSX562AIST datasheet, TSX562AIST pinout, TSX562AIST application, or TSX562AIST equivalent, this device is selected for precision low-power analog front-ends where input bias current, offset stability over temperature, ESD robustness (4 kV HBM), and wide supply range are critical in industrial and automotive environments.

Technical Context

The TSX562AIST uses complementary PMOS/NMOS input stages enabling rail-to-rail input common-mode range from (V_CC–) – 0.1 V to (V_CC+) + 0.1 V, with full performance maintained up to (V_CC+) – 1.5 V. Its 900 kHz GBP and 1.1 V/µs slew rate support stable active filtering and buffered sensor outputs without phase reversal.

It features 84 dB CMRR (typ. at 5 V), 95 dB PSRR (at 16 V), and 15 µV_PP low-frequency noise (0.1–10 Hz), making it suitable for DC-coupled instrumentation where long-term offset drift (2–12 µV/°C) and aging effects (1.6 nV/√month) are design constraints.

Key Specifications

Pinout & Package

TSX562AIST is housed in a MiniSO8 (SOIC-8) package with exposed pad, measuring 4.9 mm × 6.0 mm × 1.75 mm (max), RoHS-compliant and ECOPACK® certified.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TSX562IST and MCP6022-E/SN, the TSX562AIST uniquely combines 16 V operation, 600 µV offset, and 1 pA bias - enabling high-accuracy, high-supply, low-power analog front-ends unattainable with either alternative alone.

Availability

TSX562AIST is available at Aetrix Electronics and suitable for automotive cabin sensor modules, industrial pressure transmitters, portable medical ECG front-ends, and battery monitoring systems requiring stable component supply across extended temperature and voltage ranges.

Supply support for TSX562AIST 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, microcontroller, power, and sensor solutions for industrial, automotive, and consumer markets.

The TSX56x series belongs to ST's precision analog portfolio, engineered specifically for low-power, high-accuracy signal conditioning in harsh-environment applications where rail-to-rail input, ESD resilience, and automotive qualification are mandatory.

FAQ

What is the maximum capacitive load the TSX562AIST can drive while maintaining stability?

The TSX562AIST maintains ≥55° phase margin with up to 100 pF capacitive load at unity gain, as verified in Figure 13 of the datasheet. For loads exceeding 100 pF, a series resistor (≥100 Ω) must be added between output and capacitance to preserve stability - especially critical in active filter and DAC buffer configurations.

Does the TSX562AIST support true rail-to-rail output swing?

No - the TSX562AIST features rail-to-rail *input* only. Its output swing is limited to within 70 mV of each rail (V_OH/V_OL = 70 mV max at 25 °C), as specified in Tables 4–6. This is sufficient for driving SAR ADC references or interfacing with logic-level comparators but not for full-rail digital interfacing.

How does the input offset voltage drift behave over temperature, and is it linear?

The TSX562AIST exhibits a maximum input offset drift of 12 µV/°C across –40 °C to 125 °C, with typical behavior following a parabolic curve centered near 25 °C. The datasheet guarantees worst-case drift using statistical sampling (Cpk > 2), not linear extrapolation - critical for high-accuracy closed-loop systems where drift compensation algorithms rely on bounded error envelopes.

Can the TSX562AIST be used in single-supply configurations with ground-referenced inputs?

Yes - its rail-to-rail input allows common-mode voltages down to V_CC– – 0.1 V (i.e., –0.1 V when referenced to ground). In single-supply 5 V systems, this enables direct connection to 0 V-referenced sensors. However, output cannot swing to ground; minimum VOL is 70 mV, so a small positive offset or level-shifting network may be needed for true 0 V output compliance.