STMicroelectronics TS922IYPT

Overview

TS922IYPT 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), 4 MHz gain-bandwidth, 1 V/μs slew rate, and ultra-low 9 nV/√Hz input noise - enabling high-fidelity line drivers and portable speaker amplification.

For engineers reviewing the TS922IYPT datasheet, TS922IYPT pinout, TS922IYPT application, or TS922IYPT equivalent, key selection criteria include rail-to-rail operation at 2.7–12 V supply, low 900 μV max input offset (TS922A grade), latch-up immunity, and automotive-grade AEC-Q100 qualification for embedded audio and instrumentation.

Technical Context

The TS922IYPT integrates two independent BiCMOS op-amps with matched internal transistor pairs to ensure low input offset drift (2 μV/°C) and high channel separation (120 dB). Its architecture supports stable operation with capacitive loads up to 500 pF and maintains phase margin ≥68° at unity gain with 100 pF load.

It operates across –40 °C to +125 °C with supply rejection ratio ≥60 dB (2.7–5.5 V range) and common-mode rejection ≥56 dB over full temperature. Input stage biasing enables rail-to-rail common-mode range (V_CC– – 0.2 V to V_CC+ + 0.2 V), critical for low-voltage signal conditioning.

Key Specifications

Pinout & Package

TSSOP8 package: 3 mm × 4.4 mm body, 0.65 mm pitch, 1.2 mm height, lead-free, RoHS-compliant, ECOPACK®2 qualified.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TS922IDT, TS922IYPT adds AEC-Q100 qualification and extended temperature support; versus MCP6022-E/SN, it provides 3.2× higher output current and 400× greater bandwidth - making it uniquely suited for high-fidelity, high-drive audio endpoints.

Availability

TS922IYPT is available at Aetrix Electronics and suitable for automotive cabin audio, portable medical instrumentation, industrial sensor signal conditioning, and battery-powered multimedia systems requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for TS922IYPT 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 industrial, automotive, and consumer markets.

The TS922 product line targets high-performance, low-voltage analog signal chains - specifically engineered for rail-to-rail operation, low-noise audio, and robust operation in harsh environments like automotive cabins and portable medical devices.

FAQ

What is the maximum capacitive load the TS922IYPT can drive without instability?

The TS922IYPT is specified stable with capacitive loads up to 500 pF when configured as a unity-gain buffer, as verified by phase margin ≥68° and gain margin ≥12 dB in the datasheet's Figure 5 and Figure 13. This allows direct driving of LCD panels, long cables, or multiple downstream inputs without external isolation resistors or compensation networks.

Does TS922IYPT support true single-supply operation with input signals at ground potential?

Yes - its rail-to-rail input common-mode range extends from V_CC– – 0.2 V to V_CC+ + 0.2 V. With V_CC– = 0 V, this permits input signals from –0.2 V to V_CC+ + 0.2 V, enabling direct interfacing with 0 V-referenced sensors, DACs, or microcontroller GPIOs without level-shifting circuitry.

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

The 80 mA rating is the guaranteed minimum short-circuit current under all conditions, and the device sustains ±80 mA into 32 Ω loads while maintaining rail-to-rail output swing (e.g., 2.63 V_OH and 180 mV_OL at 3.3 V supply). This enables direct 250 mW/channel delivery into 32 Ω speakers without thermal derating up to +85 °C ambient.

Is the TS922IYPT pin-compatible with other TSSOP8 dual op-amps like the LM358 or TLV2372?

No - TS922IYPT uses standard dual-op-amp pinout (OUT A, –IN A, +IN A, V–, +IN B, –IN B, OUT B, V+), matching industry convention, but differs electrically: LM358 lacks rail-to-rail I/O and has only 20 mA drive; TLV2372 offers rail-to-rail I/O but only 5 mA drive and 2.4 MHz GBW. Direct replacement requires validation of noise, drive, and stability margins.