STMicroelectronics TSV782IST

Overview

TSV782IST from STMicroelectronics is a dual, rail-to-rail input/output operational amplifier optimized for high-accuracy, high-bandwidth sensor signal conditioning. It delivers 30 MHz gain bandwidth, 20 V/µs slew rate, 2 pA typical input bias current, 7 nV/√Hz input voltage noise at 10 kHz, and operates from 2.0 V to 5.5 V supply - enabling precision photodiode transimpedance amplification and low-side current sensing in automotive HEV/EV power management systems.

For engineers reviewing the TSV782IST datasheet, TSV782IST pinout, TSV782IST application, or TSV782IST equivalent, key selection criteria include its ultra-low input bias current for high-impedance sensor interfacing, guaranteed rail-to-rail operation across –40 °C to +125 °C, stable unity-gain performance with 47 pF capacitive load, and MiniSO8 packaging suited for space-constrained automotive PCB layouts.

Technical Context

The TSV782IST employs a high-speed complementary input stage enabling rail-to-rail common-mode input range (VCC– – 0.1 V to VCC+ + 0.1 V) and full output swing under 10 kΩ load. Its 30 MHz gain bandwidth product and 45–50° phase margin ensure stable unity-gain operation without external compensation, even with 47 pF capacitive loads typical of ADC input buffering.

It features matched dual channels with <±200 µV input offset voltage (25 °C), ±5 µV/°C drift, and 95–133 dB open-loop gain - supporting precise differential signal conditioning in high-side and low-side current sensing topologies where channel-to-channel crosstalk (< –120 dB at 1 kHz) must be minimized.

Key Specifications

Pinout & Package

TSV782IST is housed in an 8-pin MiniSO8 package (3.0 × 3.0 mm, 0.65 mm pitch), thermally enhanced for automotive ambient conditions with R_th-jA = 127 °C/W. The exposed pad is not electrically connected and may be left floating or grounded for mechanical stability.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-bandwidth, low-input-bias-current op amp applications.

Compared with TSV7722, TSV782IST trades 8 MHz bandwidth for 5× lower input bias current and better noise performance - critical for photodiode and high-impedance current sensing. Against TSV792, it sacrifices raw speed for automotive qualification, lower power, and superior DC precision in harsh environments.

Availability

TSV782IST is available at Aetrix Electronics and suitable for automotive battery management, HEV/EV power conversion, and industrial photodiode-based safety systems requiring stable component supply across extended temperature and long lifecycle commitments.

Supply support for TSV782IST 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 TSV78x series was developed specifically for high-accuracy, high-bandwidth signal conditioning in automotive and industrial sensor interfaces - emphasizing rail-to-rail operation, ultra-low input bias current, and robustness across –40 °C to +125 °C.

FAQ

Is TSV782IST qualified for automotive applications?

Yes, TSV782IST is an automotive-grade device qualified per AEC-Q100 Grade 1 (–40 °C to +125 °C), with 4 kV HBM ESD rating and tested for long-term reliability under voltage and temperature acceleration. It meets stringent automotive requirements for BMS, ADAS sensor interfaces, and powertrain control modules.

Can TSV782IST drive a 10 kΩ load while maintaining rail-to-rail output swing?

Yes - at 25 °C and 5 V supply, TSV782IST delivers ±55 mA output current, enabling full rail-to-rail swing into 10 kΩ loads with <20 mV saturation voltage (VOL/VOH). Performance is maintained down to 2 V supply, though output swing headroom reduces slightly at lower voltages.

What is the recommended termination for the unused channel?

For stability, the unused channel must be configured as a unity-gain buffer (IN+ tied to a valid common-mode voltage within Vicm range, IN– connected to OUT) or as an open-loop comparator (with ≥100 mV differential input). Floating inputs cause oscillation and increased supply current.

Does TSV782IST require external compensation for ADC input buffering?

No - TSV782IST is unity-gain stable and fully characterized with 47 pF capacitive load, making it ideal for direct ADC input buffering without external compensation. Its 45–50° phase margin and 9 dB gain margin ensure stable step response with minimal overshoot or ringing.