STMicroelectronics TSV792IDT

Overview

TSV792IDT from STMicroelectronics is a dual rail-to-rail input/output operational amplifier optimized for high-precision, high-bandwidth signal conditioning in automotive and industrial power management. It delivers 50 MHz gain bandwidth, 30 V/µs slew rate, 200 µV max input offset voltage, 1 pA typ. input bias current, and operates from 2.2 V to 5.5 V supply - enabling accurate low-side current sensing and photodiode transimpedance amplification in compact 8-pin MiniSO8 and DFN8 packages.

For engineers reviewing the TSV792IDT datasheet, TSV792IDT pinout, TSV792IDT application, or TSV792IDT equivalent, this device supports critical design tasks including A/D converter input buffering, solar power management signal chains, and high-frequency current measurement where low noise (6.5 nV/√Hz @ 10 kHz), wide temperature range (–40 °C to +125 °C), and unity-gain stability are mandatory.

Technical Context

The TSV792 employs a dual-input-stage architecture with rail-to-rail common-mode range (VCC− − 0.1 V to VCC+ + 0.1 V) and pair transition near VCC+ − 1.4 V; precision performance is optimized below that threshold (VCC− − 0.1 V to VCC+ − 2 V). Its 53° phase margin at 10 kΩ load ensures stable unity-gain operation with up to 1 nF capacitive load.

It features two independent amplifiers sharing one supply domain, each with 110 dB typical open-loop gain (AVD), 100 dB CMRR (CMR1), and 90 dB PSRR - all specified across –40 °C to +125 °C and supply voltages of 2.2 V, 3.3 V, and 5 V. Input stage uses complementary bipolar transistors to achieve 1 pA bias current and low 15 nV/√Hz noise at 2.2 V.

Key Specifications

Pinout & Package

TSV792IDT is available in MiniSO8 (SO-8) and DFN8 2×2 mm packages. Both use identical pinout: OUT1, IN1−, IN1+, VCC−, IN2+, IN2−, OUT2, VCC+. The DFN8 exposed pad may be connected to VCC− or left floating for thermal or isolation purposes.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-bandwidth, low-offset operational amplifier applications.

Compared with TSZ182 and TSB7192, TSV792IDT uniquely balances 50 MHz bandwidth, 200 µV offset, and 2.2–5.5 V operation - making it the only option among the three for automotive-grade, single-supply, high-speed precision amplification below 5.5 V.

Availability

TSV792IDT is available at Aetrix Electronics and suitable for automotive battery monitoring, solar charge controller signal chains, and industrial motor phase current sensing requiring stable component supply across extended temperature and voltage ranges.

Supply support for TSV792IDT 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 TSV79x series belongs to ST's precision high-speed op-amp product line, engineered specifically for accuracy-critical, high-frequency signal conditioning in automotive powertrain and ADAS subsystems where low offset, low noise, and AEC-Q100 qualification are mandatory.

FAQ

What is the maximum capacitive load the TSV792IDT can drive while maintaining stability?

TSV792IDT is fully specified and stable with up to 1 nF capacitive load in unity-gain configuration, as confirmed by phase margin measurements (≥53°) and small-signal step response testing. For loads >100 pF, layout best practices - short traces, local bypassing, and avoiding long PCB runs - are recommended to preserve bandwidth and prevent peaking.

Does TSV792IDT require external compensation for unity-gain operation?

No external compensation is required. TSV792IDT is unity-gain stable by design, verified across all operating conditions (2.2–5.5 V, –40 °C to +125 °C) with ≥53° phase margin into 10 kΩ load. Its internal compensation ensures robust performance without added components, simplifying layout in space-constrained automotive modules.

How does the dual-input-stage architecture affect common-mode rejection?

The dual-input-stage design enables rail-to-rail common-mode range but introduces a transition region near VCC+ − 1.4 V where CMRR degrades. Best CMRR (100 dB) is achieved outside this zone - specifically between VCC− − 0.1 V and VCC+ − 2 V - so designers should bias inputs away from the transition point for highest accuracy.

Can unused amplifier channels be left floating?

No. Unused channels must be configured as unity-gain buffers (IN+ tied to VCC/2, IN− to OUT) or comparators (IN+ and IN− held ≥100 mV apart) to prevent oscillation and excessive supply current. Floating inputs cause instability that couples into active channels and increases total ICC by up to 3×.