STMicroelectronics TSB182IYDT

Overview

TSB182IYDT from STMicroelectronics is a dual-channel, rail-to-rail output, chopper-stabilized precision operational amplifier with 20 µV max input offset voltage at 25 °C, 3 MHz gain bandwidth product, and operation across 4–36 V supply. It delivers high DC accuracy and low noise (24 nV/√Hz) in automotive-qualified AEC-Q100 Grade 1 packaging for current-sensing and voltage monitoring in battery management systems.

For engineers reviewing the TSB182IYDT datasheet, TSB182IYDT pinout, TSB182IYDT application, or TSB182IYDT equivalent, this device supports high-precision closed-loop control in wide-temperature industrial power supplies, automotive ADAS sensor signal conditioning, and EMI-sensitive motor control feedback paths where offset drift and 1/f noise must be minimized.

Technical Context

The TSB182 employs a 400 kHz chopper architecture to continuously correct input offset and eliminate 1/f noise, enabling stable µV-level DC accuracy over temperature. Its dual-channel SO8 package integrates independent input stages with anti-parallel differential diodes limiting |V_id| to ±0.7 V and internal ESD protection rated to 4 kV HBM.

It features a notch-filtered demodulation path that suppresses chopping ripple to levels comparable with broadband noise (620 nV_pp, 0.1–10 Hz), while maintaining phase margin ≥54° and stable 1 nF capacitive load drive. Supply voltage rejection exceeds 127 dB across 4–36 V, supporting direct connection to unregulated battery rails.

Key Specifications

Pinout & Package

TSB182IYDT is housed in an SO8 (Small Outline Integrated Circuit, 150 mil width) package with exposed pad for thermal enhancement. Pin 1 is marked by a dot or notch; top-side marking includes "TSB182" and date code.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TSB612IDT, TSB182IYDT trades 300 µA higher quiescent current for 2× bandwidth and superior EMI hardening; compared with TSB712IYDT, it sacrifices rail-to-rail input capability to achieve 3.75× lower offset voltage and tighter drift control-critical for DC-coupled measurement chains.

Availability

TSB182IYDT is available at Aetrix Electronics and suitable for automotive battery management, industrial PLC analog I/O modules, and server VRM health monitoring requiring stable component supply across extended temperature and long production lifecycles.

Supply support for TSB182IYDT 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 microcontrollers, power ICs, sensors, and precision analog components for automotive, industrial, and consumer markets.

The TSB182 belongs to ST's high-accuracy chopper-stabilized op-amp product line, engineered specifically for DC-critical applications in harsh environments-including automotive powertrain, battery monitoring, and industrial process control-where µV-level offset stability over temperature is non-negotiable.

FAQ

What is the maximum capacitive load the TSB182IYDT can drive without oscillation?

TSB182IYDT is characterized to drive up to 1 nF capacitive load without sustained oscillation, as verified in the datasheet's electrical characteristics tables under "Cload Capacitive load drive." This rating assumes proper PCB layout with short traces, local 100 nF ceramic decoupling at VCC+ and VCC− pins, and no series resistance in the feedback path. For loads >1 nF, external isolation resistors or unity-gain stable compensation networks are required.

Does the TSB182IYDT require external filtering for EMI immunity?

No external filtering is required-the device integrates optimized on-die RC filters (1 kΩ + 1.6 pF per input) that provide measurable EMI rejection from 10 MHz to 2.4 GHz, as shown in Figure 46 of DS14357. These filters are tuned to minimize impact on noise and stability while maximizing suppression of common radiated bands like GSM, Wi-Fi, and Bluetooth. External ferrites or LC filters may still be used in extreme RF environments but are not necessary for standard AEC-Q100 or IEC 61000-4-3 compliance.

Can the TSB182IYDT be used as a comparator?

While not optimized for comparator use, TSB182IYDT can operate in open-loop mode with caution: its differential input voltage must be limited to ±0.7 V via external series resistors (per Section 5.2), and output recovery from saturation takes up to 2 µs (overload recovery time). For reliable comparator functionality, ST recommends dedicated devices like TS882; using TSB182IYDT as a comparator risks increased propagation delay, output phase reversal, and potential latch-up if input limits are exceeded.

How does the chopper architecture affect small-signal step response?

The 400 kHz chopper clock introduces negligible impact on small-signal settling: TSB182IYDT achieves 0.1% settling in 7 µs for a 10 V step (Table 5), with overshoot controlled below 1% for R_iso ≥10 Ω (Figure 43). Output ripple remains buried beneath the 24 nV/√Hz broadband noise floor, making it invisible in typical oscilloscope measurements. However, fast large-signal transients may reveal converging steps due to notch filter dynamics-designers should verify response in actual closed-loop configurations using SPICE models from ST's website.