STMicroelectronics TS954IYDT

Overview

TS954IYDT from STMicroelectronics is a quad rail-to-rail input/output BiCMOS operational amplifier optimized for 3 V and 5 V operation, delivering 3 MHz gain-bandwidth, 1 V/µs slew rate, and 0.9 mA supply current per amplifier at 3 V. It operates across -40 °C to +125 °C and features 80 dB supply voltage rejection ratio and latch-up immunity. It is used in automotive-grade signal conditioning circuits requiring stable rail-to-rail performance under wide supply (2.7–12 V) and temperature ranges.

For engineers reviewing the TS954IYDT datasheet, TS954IYDT pinout, TS954IYDT application, or TS954IYDT equivalent, key selection criteria include rail-to-rail I/O swing, low quiescent current at 3 V, SO14 automotive-grade qualification (AEC-Q100), and verified performance in active filtering and DAC buffering within industrial and automotive control modules.

Technical Context

The TS954IYDT implements a BiCMOS input stage enabling rail-to-rail common-mode input range (V_DD − 0.2 V to V_CC + 0.2 V) and rail-to-rail output swing (within 100 mV of rails at 600 Ω load). Its 3 MHz GBP and 1 V/µs slew rate support medium-speed precision amplification without phase margin degradation (60° at unity gain with 100 pF load).

It achieves 80 dB SVR and 50–80 dB CMRR across temperature, with input offset voltage ≤8 mV and drift of only 2 µV/°C - enabling stable DC-coupled gain stages in battery-powered and automotive sensor interfaces where supply ripple and thermal drift must be tightly controlled.

Key Specifications

Pinout & Package

TS954IYDT is housed in a 14-pin SOIC package (SO14) with standard 1.27 mm pitch, 8.75 mm × 4.0 mm body, and ECOPACK® RoHS-compliant finish. The package supports automated optical inspection and reflow soldering per JEDEC J-STD-020.

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 MCP6004-E/SL, TS954IYDT uniquely combines AEC-Q100 Grade 1 qualification, 3 MHz bandwidth, and rail-to-rail I/O in a single SO14 package - making it the only option for automotive signal conditioning where both reliability and dynamic performance are mandatory.

Availability

TS954IYDT is available at Aetrix Electronics and suitable for automotive sensor hubs, industrial data loggers, medical patient monitors, and portable audio DAC interfaces requiring stable component supply across extended temperature and long product lifecycles.

Supply support for TS954IYDT 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 automotive, industrial, and consumer markets.

The TS95x family was engineered specifically for rail-to-rail precision amplification in battery-constrained and automotive environments, emphasizing low-voltage operation (down to 2.7 V), latch-up immunity, and robust ESD tolerance (3 kV HBM).

FAQ

Is TS954IYDT pin-compatible with TS954IDT?

Yes, TS954IYDT and TS954IDT share identical SO14 pinout, electrical specifications, and footprint. The only difference is automotive qualification: TS954IYDT is AEC-Q100 Grade 1 qualified (−40 °C to +125 °C) with enhanced screening, while TS954IDT is commercial grade (−40 °C to +85 °C). No layout or schematic changes are needed for drop-in replacement in qualified designs.

What decoupling capacitance is recommended for TS954IYDT?

STMicroelectronics recommends a minimum 100 nF ceramic capacitor placed within 2 mm of Pins 4 (V_CC) and 8 (V_DD), plus a 1 µF bulk capacitor near the SO14 pad. This configuration suppresses high-frequency noise and maintains 60° phase margin under 100 pF capacitive loads, as verified in DS1256 Figure 3 and layout guidelines.

Can TS954IYDT drive a 600 Ω load rail-to-rail?

Yes - at V_CC = 5 V and T_A = 25 °C, TS954IYDT delivers VOH ≥ 4.7 V and VOL ≤ 300 mV into 600 Ω (Table 4), achieving <100 mV from each rail. Performance is maintained across −40 °C to +125 °C per Table 2, with VOL rising to ≤400 mV at temperature extremes - sufficient for most 12-bit ADC reference buffering.

Does TS954IYDT require external compensation for unity-gain stability?

No - TS954IYDT is internally compensated for unity-gain stability. DS1256 specifies 60° phase margin at unity gain with 600 Ω load and 100 pF capacitive load (Table 3), and Figure 3 confirms stable step response without peaking. No external compensation network is needed for gains ≥1, simplifying design of active filters and buffers.