STMicroelectronics TSX9292IST

Overview

TSX9292IST 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 operation - enabling precision signal conditioning in automotive-grade active filtering and I/V conversion stages for ADC front-ends.

For engineers reviewing the TSX9292IST datasheet, TSX9292IST pinout, TSX9292IST application, or TSX9292IST equivalent, this device is selected for decompensated stability (min. gain ±1), extended -40°C to +125°C operation, and ESD-hardened (4 kV HBM) performance in noise-sensitive analog signal chains requiring unity-gain-stable alternatives within the TSX92 series.

Technical Context

The TSX9292IST is a decompensated dual op amp requiring minimum closed-loop gain of +2 or -1 for phase margin ≥60°; its internal compensation enables higher bandwidth than unity-gain-stable counterparts without external compensation networks. It operates across 4 V–16 V single-supply or ±2 V–±8 V split-supply configurations.

Rail-to-rail input stage uses complementary differential pairs enabling common-mode voltage range from V_CC- − 0.1 V to V_CC+ + 0.1 V; rail-to-rail output stage delivers >13 mA sink/source current into 10 kΩ loads while maintaining <200 mV saturation voltage near rails at 16 V supply.

Key Specifications

Pinout & Package

TSX9292IST is housed in an SO8 (Small Outline Integrated Circuit, 8-pin) package with standard 1.27 mm pitch, JEDEC MS-012AC compliant footprint, and exposed pad for thermal enhancement (R_thJA = 125 °C/W).

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 TSX9291IST, TSX9292IST saves PCB area by integrating two matched amplifiers in SO8, while TSV912IDT trades bandwidth and voltage range for ultra-low-voltage compatibility - making TSX9292IST uniquely suited for 4–16 V, high-fidelity dual-channel analog signal paths.

Availability

TSX9292IST is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial process control loops, active filtering circuits, and test equipment requiring stable component supply across extended temperature and voltage ranges.

Supply support for TSX9292IST 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 TSX92 series was developed specifically for high-speed, rail-to-rail, decompensated op amp applications demanding wide supply range and automotive-grade reliability - targeting precision signal conditioning in harsh-environment control systems.

FAQ

Is TSX9292IST unity-gain stable?

No. TSX9292IST is decompensated and requires minimum closed-loop gain of +2 (non-inverting) or -1 (inverting) for stability. Attempting unity-gain configuration causes peaking and potential oscillation, as confirmed in Figure 19–20 of the datasheet under capacitive load and varying R_L. External compensation is not recommended; instead, select TSX9291IYDT or TSV912 for unity-gain applications.

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

At gain ≥ +2, TSX9292IST drives up to 47 pF without external compensation (Figure 19). At gain = -1, stability requires ≤20 pF unless a feedback capacitor (e.g., 5–12 pF) is added (Figure 24). For loads >100 pF, a series resistor (≥10 Ω) between output and capacitance is mandatory to isolate reactive loading.

Does TSX9292IST support split-supply operation?

Yes. The device operates with dual supplies from ±2 V to ±8 V (equivalent to 4–16 V total), verified in Table 3 (Operating Conditions) and Figures 10–11 showing symmetric sink/source current vs. output voltage. Common-mode input range extends to V_CC− − 0.1 V and V_CC+ + 0.1 V, enabling true bipolar signal handling.

How does input offset voltage drift behave over temperature and time?

Input offset drift is 2–10 µV/°C (Table 4–6), with long-term drift of 1.73–2.26 µV/month at 125°C (Table 6). This is measured under follower configuration per Section 4.6; permanent drift may occur if used as comparator with high differential voltage near V_CC, especially below 0°C - avoid comparator mode in production designs.