STMicroelectronics TSV782IYST

Overview

TSV782IYST from STMicroelectronics is a dual rail-to-rail input/output operational amplifier optimized for high-bandwidth sensor signal conditioning. It delivers 30 MHz gain bandwidth, 20 V/µs slew rate, 2 pA typical input bias current, and operates from 2.0 V to 5.5 V supply across –40 °C to +125 °C. Its ultra-low noise (7 nV/√Hz @ 10 kHz) and low offset (±200 µV max) make it ideal for photodiode transimpedance amplification and precision current sensing in automotive HEV/EV power management.

For engineers reviewing the TSV782IYST datasheet, TSV782IYST pinout, TSV782IYST application, or TSV782IYST equivalent, this device supports high-side and low-side current measurement, A/D converter input buffering with 47 pF load compatibility, and photodiode interfaces requiring sub-picoampere bias current and wide common-mode range (VCC– – 0.1 V to VCC+ + 0.1 V).

Technical Context

The TSV782IYST employs a unity-gain-stable architecture with 45°–50° phase margin and 9 dB gain margin, enabling stable operation into 47 pF capacitive loads without external compensation. Its rail-to-rail input stage supports common-mode voltage down to VCC– – 0.1 V and up to VCC+ + 0.1 V, while rail-to-rail output delivers <20 mV saturation voltage at both rails over full temperature range.

It features dual independent amplifiers sharing one supply pair (VCC+, VCC–), with fully specified AC/DC performance at 2.0 V, 3.3 V, and 5.0 V supplies. Input voltage noise density remains stable at 7 nV/√Hz @ 10 kHz across supply voltages, and EMI rejection is enhanced via internal RF filtering-measured from 400 MHz to 2.4 GHz on both inputs and output.

Key Specifications

Pinout & Package

TSV782IYST is housed in an 8-pin MiniSO8 package (3.0 mm × 3.0 mm, 0.65 mm pitch), with exposed pad electrically isolated and recommended for thermal relief only-not connected to ground or supply.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual high-speed rail-to-rail op amp applications.

Compared with TSV7722, TSV782IYST trades 0.8 mA/ch higher quiescent current for +8 MHz bandwidth and +8 V/µs slew rate - essential for HEV current-loop stability. Versus TSV792, it reduces input noise by 3 nV/√Hz and cost while retaining sufficient bandwidth for most automotive sensor interfaces below 3 MHz.

Availability

TSV782IYST is available at Aetrix Electronics and suitable for high-bandwidth current sensing, photodiode amplification, and A/D converter buffering requiring stable component supply in automotive, industrial, and renewable energy applications.

Supply support for TSV782IYST 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 TSV78x series belongs to ST's precision high-speed op amp product line, engineered specifically for automotive-grade sensor signal conditioning where low bias current, wide supply range, and robust EMI immunity are mandatory.

FAQ

What is the maximum capacitive load the TSV782IYST can drive without external compensation?

The TSV782IYST is fully specified and stable driving up to 47 pF capacitive load in unity-gain configuration, as validated in the datasheet with 45°–50° phase margin. For loads exceeding 47 pF, a 10–22 Ω isolation resistor (RISO) in series with the output restores stability without degrading DC accuracy. This capability eliminates need for external compensation networks in most ADC buffer and filter applications.

Does the TSV782IYST support true rail-to-rail input at 2.0 V supply?

Yes - the TSV782IYST maintains rail-to-rail input common-mode range from VCC– – 0.1 V to VCC+ + 0.1 V across its entire 2.0 V to 5.5 V supply range. At 2.0 V supply, this means input voltages from –0.1 V to +2.1 V are fully supported, enabling direct interfacing with sensors operating near ground or supply rails without level-shifting circuitry.

How is unused channel termination handled to prevent oscillation?

An unused channel must be configured as either a unity-gain buffer (IN+ tied to any valid common-mode voltage, IN– to OUT) or a comparator (IN+ and IN– held ≥100 mV apart, differential input <2 V). Leaving inputs floating or shorted causes internal oscillation, increasing supply current by up to 2× and injecting noise into the active channel via substrate coupling.

Is the TSV782IYST pin-compatible with other MiniSO8 dual op amps like the LMV358?

No - TSV782IYST uses ST's proprietary MiniSO8 pinout (OUT1, IN1–, IN1+, VCC–, IN2+, IN2–, OUT2, VCC+), which differs from industry-standard SO8 layouts such as LMV358 (VCC+, IN+, IN–, OUT, GND, IN–, IN+, OUT). Direct replacement requires PCB redesign; however, functional equivalents like TSV7722 share the same pinout and can serve as drop-in alternatives where bandwidth permits.