STMicroelectronics TS922IPT

Overview

TS922IPT from STMicroelectronics is a rail-to-rail input/output dual BiCMOS operational amplifier in TSSOP8 package, specified for 2.7–12 V operation, delivering 80 mA output current into 32 Ω loads, 4 MHz gain-bandwidth, and 9 nV/√Hz input noise-optimized for low-voltage audio systems including portable speakers and instrumentation.

For engineers reviewing the TS922IPT datasheet, TS922IPT pinout, TS922IPT application, or TS922IPT equivalent, key selection criteria include rail-to-rail swing capability, capacitive load stability up to 500 pF, low 900 μV max input offset (TS922A variant), latch-up immunity, and ESD protection rated at 2 kV HBM-critical for battery-powered multimedia and actuator driver designs.

Technical Context

The TS922IPT implements a dual-channel BiCMOS architecture enabling 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 with <180 mV saturation voltage into 32 Ω at 3 V supply. Its 1.3 V/μs typical slew rate and 68° phase margin ensure stable unity-gain operation with 100 pF capacitive loads.

It features matched channel separation of 120 dB and 85 dB typical supply voltage rejection (SVR) at 5 V, supporting high-fidelity signal conditioning in noisy mixed-signal environments. The device maintains 70 V/mV minimum large-signal voltage gain into 600 Ω across −40 °C to +125 °C, confirming robust performance in industrial-grade portable equipment.

Key Specifications

Pinout & Package

TSSOP8 package: 3.0 mm × 6.4 mm body, 0.65 mm pitch, 1.05 mm max height, thermally enhanced with R_thJA = 120 °C/W. Flip-chip and SO8 variants exist but TS922IPT specifically uses TSSOP8.

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-E/SN, TS922IPT uniquely balances 80 mA drive, 9 nV/√Hz noise, and latch-up immunity in a TSSOP8 package-making it the only option among the three qualified for direct 32 Ω headphone driving in automotive-qualified portable systems.

Availability

TS922IPT is available at Aetrix Electronics and suitable for portable speaker systems, handheld instrumentation, multimedia line drivers, and actuator control circuits requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for TS922IPT 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 TS922 product line targets low-voltage, high-fidelity analog signal chains-specifically engineered for battery-powered audio, portable instrumentation, and space-constrained multimedia interfaces where rail-to-rail operation and robust output drive are mandatory.

FAQ

What is the maximum capacitive load the TS922IPT can drive without oscillation?

The TS922IPT is characterized for stability with up to 500 pF capacitive load when configured as a unity-gain buffer, per Figure 13 in DS1117 Rev 13. This includes PCB trace capacitance and downstream input capacitance. For loads exceeding 500 pF, a series isolation resistor (≥10 Ω) between output and capacitance is required to maintain phase margin above 60°.

Does TS922IPT support true dual-supply operation with negative voltage rails?

Yes-TS922IPT operates with split supplies (e.g., ±2.5 V) as confirmed by absolute maximum ratings specifying V_CC = 14 V total and input voltage range extending to (V_CC−) − 0.3 V. Common-mode input range spans from V_CC− − 0.2 V to V_CC+ + 0.2 V, enabling symmetric signal handling in traditional op-amp configurations.

How does the TS922A variant differ from TS922 in input offset voltage?

The TS922A guarantees ≤0.9 mV maximum input offset voltage at 25 °C (vs. ≤3 mV for TS922), and ≤1.8 mV over full −40 °C to +125 °C range (vs. ≤5 mV for TS922). This tighter specification reduces DC error in precision gain stages and active filters where offset drift impacts baseline accuracy.

Is the TS922IPT pin-compatible with other TSSOP8 dual op-amps like LMV358IPWR?

No-TS922IPT uses standard dual op-amp pinout (OUT A, −IN A, +IN A, V−, +IN B, −IN B, OUT B, V+), matching LMV358IPWR and TLV2462IDR. However, its 80 mA output drive and 500 pF capacitive load tolerance exceed those parts' capabilities, so layout and thermal design must accommodate higher power dissipation.