STMicroelectronics TSB624IDT

Overview

TSB624IDT from STMicroelectronics is a quad-channel, rail-to-rail output operational amplifier designed for precision signal conditioning in automotive and industrial power supply monitoring circuits. It delivers 1.7 MHz gain bandwidth, ≤1 mV input offset voltage at 25 °C, 375 μA per channel supply current at 36 V, and operates across –40 to +125 °C. Its SO14 package supports high-density PCB layouts in engine control units and battery management systems.

For engineers reviewing the TSB624IDT datasheet, TSB624IDT pinout, TSB624IDT application, or TSB624IDT equivalent, key selection criteria include its 36 V wide supply range, rail-to-rail output swing, 4 kV HBM ESD rating, and AEC-Q100 qualification - critical for under-hood sensor interfaces and 12/24 V DC-DC feedback loops.

Technical Context

The TSB624IDT integrates four independent high-voltage op-amps with unity-gain stable architecture and internal compensation optimized for 1.7 MHz bandwidth at 36 V supply. Its input stage accepts common-mode voltages down to ground (VCC–), enabling single-supply operation in low-side current sensing.

Each channel features matched AC performance: 0.60 V/µs slew rate (typ. at 36 V), 120 dB channel separation at 1 kHz, and 2 µs overload recovery time. The device maintains ≥100 dB CMRR and ≥100 dB SVR across its full operating temperature range, supporting stable closed-loop behavior in noisy automotive environments.

Key Specifications

Pinout & Package

TSB624IDT is housed in a 14-lead SOIC (SO14) package with standard 1.27 mm pitch, 8.65 mm × 6.00 mm body size, and 1.40 mm height. The package complies with ECOPACK environmental standards and supports automated optical inspection via wettable flanks (not applicable to SO14).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TSB622IDT, TSB624IDT consolidates four channels into one SO14 footprint, reducing interconnect parasitics and calibration complexity. Versus TSB624IPT, the SO14 variant offers superior thermal dissipation (Rth-jA = 105 °C/W vs. 100 °C/W) and proven manufacturability in high-volume automotive lines.

Availability

TSB624IDT is available at Aetrix Electronics and suitable for automotive engine control units, industrial 24 V power supplies, and battery management systems requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for TSB624IDT 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 ICs, sensors, and analog components for automotive, industrial, and consumer markets.

The TSB62x series belongs to ST's high-voltage precision op-amp product line, engineered specifically for robust signal conditioning in harsh automotive and industrial environments where wide supply range, temperature resilience, and AEC-Q100 compliance are mandatory.

FAQ

Is TSB624IDT pin-compatible with other STMicroelectronics quad op-amps?

No. TSB624IDT uses a proprietary 14-pin SO14 mapping optimized for quad-channel routing - it is not pin-compatible with TS914, LM324, or TLV2464. Pin assignments differ for VCC+, VCC–, and output/inverting input ordering. Layout redesign is required for substitution.

Can TSB624IDT operate with a single 5 V supply?

Yes. With VCC+ = 5 V and VCC– = 0 V, TSB624IDT meets all specifications: input common-mode range includes ground, rail-to-rail output swings to within 100 mV of both rails, and quiescent current drops to ~295 µA per channel. This configuration is validated per Table 7 in DS13848.

What is the maximum capacitive load the TSB624IDT can drive while maintaining stability?

TSB624IDT remains stable with up to 100 pF capacitive load at unity gain, as confirmed by phase margin ≥45° in Figure 19–21 of DS13848. For loads >100 pF, an external isolation resistor (≥100 Ω) must be placed in series with the output to prevent peaking or oscillation.

Does TSB624IDT support dual-supply operation with negative voltage on VCC–?

Yes. VCC– may be biased below ground (e.g., –5 V) as long as the absolute supply voltage (VCC+ – VCC–) remains ≤40 V and input common-mode voltage stays within (VCC–) –0.1 V to (VCC+) –1 V. This enables true bipolar operation in industrial instrumentation applications.