STMicroelectronics TSZ182IDT

Overview

TSZ182IDT from STMicroelectronics is a dual precision chopper-stabilized operational amplifier designed for high-accuracy sensor signal conditioning in automotive and medical systems. It delivers 25 µV max input offset voltage at 25 °C, 35 µV over –40 to 125 °C, rail-to-rail I/O, 3 MHz gain bandwidth, and 1 mA supply current at 5 V.

For engineers reviewing the TSZ182IDT datasheet, TSZ182IDT pinout, TSZ182IDT application, or TSZ182IDT equivalent, this device is selected for ultra-low-drift analog front-ends where calibration-free accuracy, EMI robustness (EMIRR up to 85 dB), and extended temperature operation are critical.

Technical Context

The TSZ182IDT implements a 2.4 MHz chopper-stabilized architecture that continuously corrects input offset and cancels 1/f noise in both time and frequency domains. Its dual-channel design shares no internal coupling-channel separation exceeds 120 dB at 1 kHz and 135 dB at 100 Hz.

It operates from 2.2 V to 5.5 V with rail-to-rail input common-mode range (V_CC– − 0.1 V to V_CC+ + 0.1 V) and output swing within 40 mV of rails under 10 kΩ load. Input bias current remains below 300 pA across –40 to 125 °C, enabling high-impedance sensor interfacing without degradation.

Key Specifications

Pinout & Package

TSZ182IDT is supplied in MiniSO8 package (3.9 mm × 4.9 mm, 1.75 mm height), RoHS-compliant, with exposed pad thermally connected to V_CC–.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TSZ122IDT and TSV732IST, TSZ182IDT uniquely balances 3 MHz bandwidth, 0.1 µV/°C drift, and AEC-Q100 qualification-making it the sole option for high-speed, high-stability automotive sensor nodes requiring zero calibration over life.

Availability

TSZ182IDT is available at Aetrix Electronics and suitable for automotive battery management, medical diagnostics equipment, and industrial current-loop transmitters requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for TSZ182IDT 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 silicon solutions for smart driving, power management, and precision analog applications.

TSZ182IDT belongs to ST's TSZ18x zero-drift op-amp family, engineered specifically for automotive and medical signal chains where long-term accuracy, EMI resilience, and extended temperature operation are non-negotiable.

FAQ

What is the maximum capacitive load the TSZ182IDT can drive without external compensation?

The TSZ182IDT remains stable with ≤200 pF capacitive load in unity-gain configuration. For loads exceeding 200 pF, an isolation resistor (R_iso) of 10–47 Ω is recommended-verified in datasheet Figures 51–53. This minimal series resistance introduces negligible voltage drop (<1 mV error at 10 mA) while restoring phase margin above 50°.

Does the exposed pad on the MiniSO8 package require connection, and if so, to what potential?

Yes-the exposed pad on the MiniSO8 package must be soldered to the PCB thermal pad and electrically connected to V_CC–. This connection provides optimal thermal dissipation (R_thJA = 190 °C/W) and reduces junction temperature rise during continuous 1 mA/channel operation. Leaving it floating degrades thermal performance and may violate absolute maximum ratings.

How does the TSZ182IDT handle input overvoltage conditions beyond the supply rails?

Internal ESD diodes clamp input pins to V_CC+ and V_CC–, conducting if voltage exceeds rails by >0.5 V. To prevent damage, input current must be limited to ≤10 mA using series resistors (per Figure 50). At 5 V supply, a 470 Ω resistor limits fault current to ~9 mA during ±10 V transients-ensuring safe operation without external protection.

Can the TSZ182IDT be used in single-supply configurations with ground-referenced inputs?

Yes-its rail-to-rail input stage accepts common-mode voltages from V_CC– − 0.1 V to V_CC+ + 0.1 V. In single-supply use (e.g., V_CC– = 0 V, V_CC+ = 3.3 V), inputs may go down to –0.1 V, allowing true ground-referenced or slightly negative signals without level-shifting circuitry-critical for direct connection to shunt resistors or thermocouples.