STMicroelectronics TS934AIYDT

Overview

TS934AIYDT from STMicroelectronics is a quad rail-to-rail output micropower operational amplifier with automotive-grade qualification (AEC-Q100), designed for precision signal conditioning in low-voltage, battery-constrained systems. It operates from 2.7 V to 10 V, consumes only 20 μA per amplifier, delivers 2.95 V output swing at 3 V supply (RL = 100 kΩ), and features ultra-low input bias current (1 pA) and low offset voltage (max 5 mV). It is used in automotive sensor interfaces and portable instrumentation requiring stable DC accuracy and minimal quiescent power.

For engineers reviewing the TS934AIYDT datasheet, TS934AIYDT pinout, TS934AIYDT application, or TS934AIYDT equivalent, this page provides verified package mapping (SO-14), confirmed rail-to-rail output behavior, validated automotive temperature range (−40 °C to +105 °C), and real-world design values for offset drift, CMRR, and noise-enabling rapid selection for low-power analog front-ends.

Technical Context

The TS934AIYDT implements a CMOS-input, micropower op-amp architecture optimized for single-supply operation with rail-to-rail output swing and high common-mode rejection (85 dB). Its input stage uses matched MOSFET pairs to achieve 1 pA typical input bias current and 3 μV/°C offset drift, enabling stable DC coupling in high-impedance sensor circuits.

It delivers 100 kHz gain-bandwidth product and 50 V/ms slew rate under 100 kΩ load and 50 pF capacitance, supporting moderate-speed signal conditioning without oscillation-validated by 65° phase margin and stable unity-gain follower performance across supply voltage (2.7–10 V) and temperature (−40 °C to +105 °C).

Key Specifications

Pinout & Package

TS934AIYDT is housed in a 14-lead SOIC (SO-14) package with 1.27 mm pitch, 8.55–8.75 mm body width, and 1.35–1.75 mm height-compatible with standard automated PCB assembly and IPC-7351B footprints.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TS934IDT, TS934AIYDT adds AEC-Q100 qualification and tighter offset (5 mV vs. 10 mV), justifying its use in safety-critical automotive modules; versus MCP6004-E/SL, it trades bandwidth for 50× lower input bias current-critical for electrochemical and capacitive sensing.

Availability

TS934AIYDT is available at Aetrix Electronics and suitable for automotive cabin sensors, portable pH meters, digital scales, and smoke/CO detectors requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for TS934AIYDT 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, power management ICs, sensors, and analog components for industrial, automotive, and consumer markets.

The TS93x series was developed specifically for ultra-low-power, precision analog signal conditioning in battery-operated and automotive environments-emphasizing rail-to-rail output, micropower consumption, and high-impedance input compatibility.

FAQ

What is the maximum operating junction temperature for TS934AIYDT?

The absolute maximum junction temperature is 150 °C, with rated continuous operation from −40 °C to +105 °C ambient. Thermal resistance junction-to-ambient is 103 °C/W in SO-14 package, so at 20 μA × 3.3 V = 66 μW per amplifier (264 μW total), self-heating is negligible (<0.03 °C rise) under still-air conditions.

Does TS934AIYDT require external compensation for unity-gain stability?

No-TS934AIYDT is internally compensated for unity-gain stability with 65° phase margin at CL = 50 pF. It remains stable driving capacitive loads up to 100 pF without external series resistor, as verified in Figure 13 and Figure 14 of the datasheet.

Can TS934AIYDT drive a 10 kΩ load while maintaining rail-to-rail output?

Yes-it delivers 2.95 V high-level output and 10 mV low-level output at RL = 100 kΩ with 3 V supply; at RL = 10 kΩ, VOH drops to ~2.85 V and VOL rises to ~150 mV (per Figure 11 and Figure 12), preserving functional rail-to-rail behavior for most 12-bit ADC interfaces.

Is the SO-14 package of TS934AIYDT lead-free and RoHS compliant?

Yes-TS934AIYDT uses ST's ECOPACK®-compliant SO-14 package, meeting RoHS Directive 2011/65/EU and REACH SVHC requirements. The device is halogen-free and qualifies for lead-free reflow soldering per JEDEC J-STD-020D (peak 260 °C).