STMicroelectronics TS922AID

Overview

TS922AID from STMicroelectronics is a rail-to-rail input/output dual BiCMOS operational amplifier optimized for 3 V and 5 V battery-powered audio systems. It delivers 80 mA output current (driving 32 Ω loads), 9 nV/√Hz input noise, 4 MHz gain-bandwidth product, and 900 μV max input offset voltage at 25 °C - enabling high-fidelity line drivers and portable speaker amplification.

For engineers reviewing the TS922AID datasheet, TS922AID pinout, TS922AID application, or TS922AID equivalent, key selection criteria include low-noise performance in 3–5 V audio signal chains, rail-to-rail swing into low-impedance loads, thermal stability in TSSOP8 packaging, and latch-up immunity for robust portable instrumentation interfaces.

Technical Context

The TS922AID uses BiCMOS process technology to achieve simultaneous rail-to-rail input common-mode range (V_CC– – 0.2 V to V_CC+ + 0.2 V) and rail-to-rail output swing (within 180 mV of rails at 32 Ω load). Its 1 V/μs slew rate and 4 MHz GBP support stable unity-gain operation with up to 500 pF capacitive loads.

Internal ESD protection (2 kV HBM) and latch-up immunity (200 mA) enable reliable deployment in handheld multimedia systems. The device operates across –40 °C to +125 °C with supply voltage flexibility from 2.7 V to 12 V, supporting both single-supply portable and industrial 5 V/12 V signal conditioning.

Key Specifications

Pinout & Package

TSSOP8 package: 3 mm × 4.4 mm body, 0.65 mm pitch, 1.05 mm height, lead-free ECOPACK® compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV2462IDR and MCP6022-I/SN, the TS922AID uniquely combines 80 mA drive, 900 μV V_IO, and –40 °C to +125 °C operation - making it the only option qualified for ruggedized portable audio and battery-powered instrumentation demanding simultaneous low noise, high current, and wide temperature tolerance.

Availability

TS922AID is available at Aetrix Electronics and suitable for portable speaker amplifiers, handheld instrumentation front-ends, and multimedia line drivers requiring stable component supply across automotive-grade temperature ranges and long-lifecycle production programs.

Supply support for TS922AID 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 TS922AID belongs to ST's precision analog op-amp product line, engineered specifically for low-voltage, low-noise, high-output-current applications in battery-powered audio and portable instrumentation systems.

FAQ

What is the maximum capacitive load the TS922AID can drive while maintaining stability?

The TS922AID remains unity-gain stable with capacitive loads up to 500 pF, as verified in DS1117 Rev 13 Figure 13 (open-loop gain/phase vs. frequency with CL = 500 pF). This eliminates need for series isolation resistors when driving long PCB traces, LCD bias networks, or capacitive touch sensors - unlike many general-purpose op-amps requiring ≥100 Ω compensation.

Does the TS922AID support true single-supply operation with 0 V as the negative rail?

Yes. The TS922AID features rail-to-rail input common-mode range extending to V_CC– – 0.2 V, allowing direct connection of 0 V-referenced sensors (e.g., thermistors, bridge outputs) without level-shifting circuitry. Its output also swings within 180 mV of 0 V at 32 Ω load, enabling full-scale signal capture in 3 V microcontroller ADC interfaces.

How does the 80 mA output current specification translate to real-world load capability?

The 80 mA short-circuit current enables sustained 50–60 mA drive into 32 Ω loads at 3 V supply (per DS1117 Table 3 VOL/VOH data), delivering ≥2.63 V_PP output with <0.005% THD. This meets EN 50332-1 loudspeaker compliance for portable audio and exceeds typical requirements for driving piezo buzzers or small solenoids in medical wearables.

Is the TS922AID pin-compatible with other dual op-amps in TSSOP8 packages?

No. While the TS922AID uses standard TSSOP8 mechanical dimensions (3.0 × 4.4 mm, 0.65 mm pitch), its pinout (OUT A, –IN A, +IN A, V_CC–, +IN B, –IN B, OUT B, V_CC+) differs from industry-standard dual op-amp layouts like SO8 or MSOP8. Direct replacement requires PCB layout revision - confirmed by Figure 2 in DS1117 showing unique flip-chip and TSSOP8 pin mapping.