STMicroelectronics TS954IPT

Overview

TS954IPT from STMicroelectronics is a quad rail-to-rail input/output BiCMOS operational amplifier optimized for 3 V and 5 V single-supply operation, delivering 3 MHz gain-bandwidth, 1 V/µs slew rate, and 0.95 mA per amplifier supply current at 5 V. It features ±1 kV HBM ESD immunity, 80 dB supply voltage rejection, and operates across –40 °C to +125 °C in TSSOP14 packaging - used in industrial signal conditioning and portable audio driver stages.

For engineers reviewing the TS954IPT datasheet, TS954IPT pinout, TS954IPT application, or TS954IPT equivalent, key selection criteria include rail-to-rail I/O swing under 3 V supply, low THD (0.01 %) at 10 kHz, latch-up immunity (200 mA), and compatibility with space-constrained PCB layouts requiring TSSOP14 footprint and thermal resistance of 100 °C/W.

Technical Context

The TS954IPT integrates four independent high-speed op-amps on a single BiCMOS die, each supporting rail-to-rail input common-mode range (VDD − 0.2 V to VCC + 0.2 V) and output swing within 100 mV of rails at 600 Ω load. Its phase margin is fixed at 60° and gain margin at 10 dB under unity-gain configuration with 100 pF capacitive load.

Designed for low-voltage precision analog signal paths, it maintains stable performance across 2.7–12 V supply range, exhibits 2 µV/°C input offset drift, and achieves 25 nV/√Hz input noise density at 1 kHz - enabling accurate buffering of DAC outputs and sensor front-ends without external level-shifting.

Key Specifications

Pinout & Package

TSSOP14 package: 4.9 mm × 6.4 mm × 1.05 mm body, 0.65 mm pitch, exposed pad optional, RoHS-compliant ECOPACK2.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TS954IDT and LMV324DT, TS954IPT offers superior thermal performance in compact layouts, guaranteed latch-up immunity critical for industrial I/O modules, and tighter THD specification essential for medical-grade signal fidelity - making it the preferred choice for high-integrity embedded analog subsystems.

Availability

TS954IPT is available at Aetrix Electronics and suitable for industrial automation, portable medical devices, and automotive cabin electronics requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for TS954IPT 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 microcontrollers, analog ICs, power management devices, and MEMS sensors for industrial, automotive, and consumer markets.

The TS95x family targets low-voltage, high-fidelity analog signal conditioning - specifically engineered for battery-powered instrumentation, sensor interfaces, and portable audio where rail-to-rail operation and low power are mandatory design constraints.

FAQ

What is the maximum capacitive load the TS954IPT can drive while maintaining stability?

The TS954IPT is characterized for stability with up to 100 pF capacitive load at unity gain when driving a 600 Ω resistor, achieving 60° phase margin and 10 dB gain margin. For loads exceeding 100 pF, a series isolation resistor (≥10 Ω) is required at the output to prevent peaking or oscillation - verified per Figure 3 and Table 3 in DS1256 Rev 13.

Does the TS954IPT support true single-supply operation with input signals extending to ground?

Yes - its rail-to-rail input common-mode voltage range extends from VDD − 0.2 V to VCC + 0.2 V. When VDD is connected to ground and VCC = 3 V, inputs accept signals from −0.2 V to +3.2 V, enabling direct interfacing with ground-referenced sensors and DACs without level-shifting circuitry.

How does the TS954IPT's latch-up immunity specification impact system-level reliability?

The TS954IPT guarantees 200 mA latch-up immunity per IEC 61000-4-2 Annex C, meaning it withstands transient overcurrent events - such as ESD strikes or supply rail glitches - without entering destructive high-current latch-up states. This eliminates need for external current-limiting resistors in I/O protection networks for industrial fieldbus nodes.

Can the TS954IPT be used in dual-supply configurations (e.g., ±2.5 V)?

Yes - the device operates with total supply voltage from 2.7 V to 12 V, including split supplies like ±2.5 V (5 V total). In such configurations, VDD is connected to the negative rail and VCC to the positive rail; all specifications including rail-to-rail I/O and 3 MHz GBW remain valid per Table 2 and Figure 3 in the datasheet.