STMicroelectronics TSV7722IST

Overview

TSV7722IST from STMicroelectronics is a dual, rail-to-rail output, low-input-offset-voltage operational amplifier optimized for precision low-side current sensing and photodiode amplification. It delivers 22 MHz gain bandwidth, 50 µV typical input offset voltage (200 µV max), 2 pA typical input bias current, and operates from 1.8 V to 5.5 V single supply - enabling high-accuracy signal conditioning in automotive sensor interfaces and industrial current monitoring systems.

For engineers reviewing the TSV7722IST datasheet, TSV7722IST pinout, TSV7722IST application, or TSV7722IST equivalent, this device is selected for demanding analog front-ends requiring stable DC accuracy, wide common-mode range down to the negative rail, low noise (7 nV/√Hz at 10 kHz), and robust performance across -40°C to +125°C.

Technical Context

The TSV7722IST implements a unity-gain-stable voltage-feedback architecture with 22 MHz GBW and 11 V/µs slew rate, supporting fast settling (270 ns to 0.1%) into 47 pF loads. Its input stage features ultra-low bias current (2 pA typ.) and rail-to-rail input common-mode range extending to VCC− − 0.1 V - critical for accurate low-side shunt measurement where Vicm ≈ 0 V.

It achieves 99 dB CMRR and 108 dB PSRR at 25°C, with input offset drift limited to ±4 µV/°C over temperature. The dual-channel layout enables matched performance between channels (120 dB channel separation), minimizing crosstalk in multi-sensor signal chains.

Key Specifications

Pinout & Package

TSV7722IST is supplied in MiniSO8 package (3.9 mm × 4.9 mm, 1.27 mm pitch), with exposed pad thermally connected to VCC− for improved thermal performance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TSV7722IST, TSV792IDT trades DC accuracy for bandwidth, while TSB7192CDT sacrifices low-voltage operation and input precision for extended supply range - making TSV7722IST uniquely balanced for automotive and portable precision sensing.

Availability

TSV7722IST is available at Aetrix Electronics and suitable for automotive battery management, photodiode signal conditioning, and industrial motor current monitoring requiring stable component supply across extended temperature and long product lifecycles.

Supply support for TSV7722IST 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, microcontroller, power, and sensor solutions for automotive, industrial, and consumer markets.

The TSV772x series belongs to ST's precision operational amplifier portfolio, engineered specifically for high-accuracy, low-power sensor signal conditioning in harsh environments - with emphasis on low-side current sensing, photodiode interfacing, and AEC-Q100-compliant automotive applications.

FAQ

What is the maximum capacitive load the TSV7722IST can drive without external compensation?

The TSV7722IST is fully specified and stable with 47 pF capacitive load in unity-gain configuration, achieving ≥44° phase margin. For loads exceeding 47 pF, stability degrades due to gain peaking and overshoot; a 10–22 Ω isolation resistor in series with the output restores stability while preserving DC accuracy - verified in Figure 35 of DS13614 Rev 7.

Does the TSV7722IST support true rail-to-rail input common-mode range?

No - it supports rail-to-rail *output* swing, but its input common-mode range extends from VCC− − 0.1 V to VCC+ − 1.1 V. This "low-rail input" capability enables operation with inputs at ground (critical for low-side current sensing), though it does not accept signals at VCC+.

How is input offset voltage trimmed, and does it vary with supply voltage?

Offset is factory-trimmed at VCC = 3.3 V and Vicm = 0 V, optimizing DC accuracy for low-rail operation. Vio variation vs. supply is minimal: ±50 µV typ. at 1.8 V, 3.3 V, and 5 V (Table 6, 8, 10); full-range drift remains bounded by ±650 µV over −40°C to +125°C regardless of VCC.

Can unused channel of the TSV7722IST be left floating?

No - floating inputs risk oscillation and increased supply current. ST recommends configuring the idle channel either as unity-gain buffer (IN+ tied to valid Vicm voltage, IN− to OUT) or as comparator (IN+ and IN− held ≥100 mV apart). Both methods ensure stability and prevent interference with the active channel's performance.