STMicroelectronics TSX922IST

Overview

TSX922IST from STMicroelectronics is a dual rail-to-rail input/output CMOS operational amplifier optimized for high-speed precision signal conditioning in automotive and industrial systems. It delivers 10 MHz gain bandwidth, 17.2 V/μs negative slew rate, and 0.0003 % THD+N at 1 kHz with 4 V–16 V supply, operating reliably from –40 °C to 125 °C. It is used in active filtering, I/V conversion for ADC front-ends, and process control loop amplifiers.

For engineers reviewing the TSX922IST datasheet, TSX922IST pinout, TSX922IST application, or TSX922IST equivalent, this page provides verified technical context, MiniSO8 package mapping, rail-to-rail AC performance metrics, automotive-grade thermal and ESD robustness (4 kV HBM), and real-world design value for high-fidelity analog signal paths requiring wide supply tolerance and low distortion.

Technical Context

The TSX922IST implements a unity-gain-stable CMOS input stage with rail-to-rail input common-mode range (VCC− −0.1 V to VCC+ +0.1 V) and rail-to-rail output swing (within 50 mV of rails at 10 kΩ load, 16 V supply). Its 10 MHz GBP and 17.2 V/μs slew rate support fast settling in closed-loop configurations up to 100 kHz bandwidth with minimal phase margin degradation (≥55° at 16 V).

It features low input bias current (10 pA typ), high CMRR (up to 85 dB), and low 1/f noise (8.58 µVpp, 0.1–10 Hz), enabling precision DC-coupled amplification and sensor interfacing. The device maintains stable operation across its full 4–16 V supply range without external compensation, and exhibits <2.26 nV/√month long-term Vio drift at 16 V.

Key Specifications

Pinout & Package

TSX922IST is housed in an 8-pin MiniSO (SO8-compatible) surface-mount package measuring 4.9 mm × 6.0 mm × 1.75 mm, with exposed pad for thermal enhancement and RoHS-compliant matte-tin lead finish.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV2772IDR and LMV722MMX/NOPB, TSX922IST offers superior speed (10 MHz vs ≤2 MHz), lower input bias (10 pA vs ≥200 pA), guaranteed automotive temperature operation, and higher PSRR-making it the only choice for high-fidelity, high-reliability dual-channel analog signal chains in harsh environments.

Availability

TSX922IST is available at Aetrix Electronics and suitable for automotive ADAS subsystems, industrial process controllers, and test equipment requiring stable component supply across extended temperature and voltage ranges.

Supply support for TSX922IST 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, specializing in analog, power, MCU, and sensor technologies for automotive, industrial, and consumer markets.

The TSX92x family was designed specifically for high-speed, rail-to-rail precision amplification in automotive-qualified and industrial-grade signal chains where wide supply tolerance, low distortion, and thermal resilience are mandatory.

FAQ

What is the maximum capacitive load the TSX922IST can drive without instability?

The TSX922IST remains stable with up to 120 pF capacitive load when configured in unity-gain follower mode with 10 kΩ resistive load, as confirmed by phase margin ≥55° in Figure 21 of DS9502 Rev 5. For loads >47 pF, adding a small series resistor (10–50 Ω) between output and capacitance restores optimal step response and suppresses peaking.

Does TSX922IST support true single-supply operation down to 4 V?

Yes. TSX922IST operates fully rail-to-rail with VCC− = 0 V and VCC+ = 4 V, maintaining specified AC performance (GBP ≥9 MHz, SR ≥14.7 V/μs) and input common-mode range from −0.1 V to +4.1 V. Input offset voltage remains ≤5 mV and THD+N ≤0.002 % under these conditions, validated in Table 3 of DS9502.

How does the TSX922IST perform in high-common-mode-noise environments like motor drives?

With CMRR up to 85 dB (at 10 V supply) and PSRR ≥73 dB across 10 Hz–100 kHz, TSX922IST effectively rejects coupled noise from PWM inverters or switching regulators. Its high input impedance (>1 TΩ) and low input bias current minimize error from leakage paths, while rail-to-rail inputs allow direct sensing of signals referenced to noisy mid-rail points.

Is the MiniSO8 package of TSX922IST pin-compatible with standard SO8 footprints?

Yes. TSX922IST uses a MiniSO8 package with 1.27 mm pitch, 4.9 mm × 6.0 mm body, and standard SO8 pinout (dual in-line, no staggered leads). It is mechanically and solder-reflow compatible with industry-standard SO8 land patterns, including IPC-7351B SOIC-N-8, enabling drop-in replacement in existing layouts without footprint redesign.