STMicroelectronics TSX9292IQ2T

Overview

TSX9292IQ2T from STMicroelectronics is a dual rail-to-rail input/output CMOS operational amplifier optimized for high-speed, wide-supply applications. It delivers 16 MHz gain bandwidth, 27 V/µs slew rate, and 0.0003 % THD+N at 1 kHz with 4 V–16 V supply, operating across –40 °C to +125 °C. It is decompensated for stable operation at gains ≥ +2 or ≤ –1, targeting active filtering and precision I/V conversion in automotive and industrial signal chains.

For engineers reviewing the TSX9292IQ2T datasheet, TSX9292IQ2T pinout, TSX9292IQ2T application, or TSX9292IQ2T equivalent, key selection criteria include minimum stable gain configuration (≥ +2 or ≤ –1), rail-to-rail swing under 16 V supply, ESD tolerance (4 kV HBM), and unity-gain instability warning - all critical for high-fidelity analog front-ends in communications and test equipment.

Technical Context

The TSX9292IQ2T employs a decompensated two-stage CMOS architecture requiring external gain-setting resistors to ensure ≥ 60° phase margin. Its rail-to-rail input stage uses complementary PMOS/NMOS differential pairs enabling full common-mode range (V_CC– – 0.1 V to V_CC+ + 0.1 V), while the output stage combines push-pull NMOS/PMOS drivers delivering ±74 mA source/sink capability at 16 V.

Stability is explicitly conditioned on closed-loop gain magnitude outside the (–1, +2) interval; operation at unity gain induces peaking and overshoot, as confirmed by Bode plots across temperature and supply voltage (Figures 14–18). Input bias current remains ultra-low (10 pA typ) across –40 °C to +125 °C, supporting high-impedance sensor interfaces without significant error drift.

Key Specifications

Pinout & Package

TSX9292IQ2T is housed in an 8-pin DFN package (2 mm × 2 mm, 0.5 mm pitch) with wettable flanks, optimized for automated optical inspection and thermal performance in space-constrained layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TSV912IDT and LM7332MAX/NOPB, TSX9292IQ2T uniquely balances 16 V operation, AEC-Q100 qualification, and decompensated speed-making it irreplaceable in automotive ADAS sensor front-ends requiring both high voltage headroom and guaranteed stability at gain = +2.

Availability

TSX9292IQ2T is available at Aetrix Electronics and suitable for automotive sensor signal conditioning, industrial active filtering, and high-speed test equipment front-ends requiring stable component supply across extended temperature and voltage ranges.

Supply support for TSX9292IQ2T 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 automotive, industrial, and consumer markets.

The TSX92xx series was developed specifically for high-speed, rail-to-rail operational amplifiers in automotive-qualified signal chains-emphasizing stability at moderate gains, wide supply flexibility, and robustness in harsh environments.

FAQ

Can TSX9292IQ2T be used at unity gain?

No. TSX9292IQ2T is decompensated and unstable at unity gain, exhibiting peaking and overshoot per Figure 22 and Section 4.4. It requires closed-loop gain ≥ +2 or ≤ –1 for stable operation. For unity-gain applications, ST recommends the TSV912IDT or TSX632IYDT instead.

What is the maximum capacitive load it can drive without compensation?

TSX9292IQ2T can drive up to 20 pF directly (per Figure 22), but exhibits >15 % overshoot at 47 pF with no feedback capacitor. For loads >20 pF, a feedback capacitor (e.g., 5–12 pF) must be added in parallel with R_f to restore stability, as shown in Figure 24.

Does it support dual-supply operation?

Yes. TSX9292IQ2T operates with split supplies (e.g., ±8 V) or single-ended (e.g., 0 V / +16 V). The input common-mode range extends 0.1 V beyond both rails, and output swings rail-to-rail - enabling true bipolar signal processing without level-shifting circuitry.

Is thermal performance validated for DFN8 package at full load?

Yes. The DFN8 2×2 mm package has a typical R_thJA of 57 °C/W (Table 2). At 3.4 mA supply current per amplifier and 16 V supply, total power dissipation is ~54 mW; junction temperature rise is <3.1 °C above ambient - well within the 150 °C absolute max limit even at +125 °C ambient.