STMicroelectronics TSZ124IYPT

Overview

TSZ124IYPT from STMicroelectronics is a quad-channel, rail-to-rail input/output precision operational amplifier featuring 5 µV max input offset voltage at 25 °C and 8 µV over -40 °C to 125 °C, 400 kHz gain bandwidth product, 1.8–5.5 V supply range, and 40 µA max supply current per amplifier. It serves as a low-drift signal-conditioning front-end in battery-powered medical sensors and portable instrumentation.

For engineers reviewing the TSZ124IYPT datasheet, TSZ124IYPT pinout, TSZ124IYPT application, or TSZ124IYPT equivalent, this page delivers verified specifications, QFN16 3×3 package layout, chopper-stabilized architecture context, and validated alternatives for ultra-low-offset analog signal chains requiring <10 µV drift across automotive-grade temperature ranges.

Technical Context

The TSZ124IYPT implements a chopper-stabilized CMOS architecture with a 400 kHz internal clock, enabling near-zero input offset voltage drift (≤30 nV/°C) and elimination of 1/f noise-critical for DC-coupled sensor interfaces. Its rail-to-rail input common-mode range extends from VCC− − 0.1 V to VCC+ + 0.1 V, and output swing reaches within 30 mV of either rail at 25 °C.

It operates across 1.8–5.5 V supply, delivering 115–136 dB CMRR and 120–140 dB PSRR at 25 °C, with EMI rejection up to 91 dB at 2.4 GHz. The device supports stable operation with 100 pF capacitive loads and achieves 0.19 V/µs slew rate at 5 V, optimized for low-power, high-accuracy amplification without external calibration.

Key Specifications

Pinout & Package

TSZ124IYPT is housed in a 16-pin QFN package (3 mm × 3 mm, 0.5 mm pitch) with exposed thermal pad. Pin 1 is marked by a dot; the exposed pad must be soldered to PCB ground for optimal thermal performance and EMI immunity.

Key Features

Applications

Equivalent & Alternatives

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

Compared with OPA2333PWR and AD8629ARZ-REEL, TSZ124IYPT uniquely balances quad integration, 5 µV offset, 400 kHz bandwidth, and 40 µA power-making it the only choice for space-constrained, battery-operated precision analog systems needing four matched channels without thermal or supply-induced drift penalties.

Availability

TSZ124IYPT is available at Aetrix Electronics and suitable for battery-powered medical devices, portable environmental sensors, industrial temperature transmitters, and wearable biopotential monitors requiring stable component supply across extended temperature and long-lifecycle programs.

Supply support for TSZ124IYPT 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, designing and manufacturing analog, MCU, power, and sensor solutions for industrial, automotive, and consumer markets.

The TSZ12x series belongs to ST's precision analog portfolio, engineered specifically for ultra-low-offset, micropower signal conditioning in battery-constrained and thermally demanding applications-emphasizing chopper stability, rail-to-rail operation, and robust EMI immunity.

FAQ

What is the recommended power supply decoupling for TSZ124IYPT in QFN16?

Place a 100 nF X7R ceramic capacitor between pins 10 (VCC+) and 16 (VCC−), located within 2 mm of the package. Add a 1 µF bulk capacitor on the same supply net. Connect the exposed thermal pad directly to a solid ground plane using ≥4 thermal vias (0.3 mm diameter) to ensure thermal stability and EMI suppression.

Does TSZ124IYPT require external clocking or configuration for chopper operation?

No. The chopper stabilization runs autonomously at a fixed 400 kHz internal clock; no external pins, timing components, or configuration registers are needed. The architecture self-calibrates input offset continuously-users interface it as a standard op-amp with enhanced DC precision.

Can TSZ124IYPT drive capacitive loads greater than 100 pF?

Yes, but with reduced phase margin. The datasheet guarantees stability with ≤100 pF. For 200–500 pF loads, add a 10–50 Ω series resistor between output and load to isolate capacitance. Avoid direct connection to >1 nF loads without isolation or feedback compensation.

How does the exposed pad on QFN16 affect thermal performance?

The exposed pad (connected to VCC−) lowers junction-to-board thermal resistance to 39 °C/W. Soldering it to a ≥25 mm² copper pour with ≥4 thermal vias reduces steady-state die temperature by up to 25 °C at 160 µA total current-critical for maintaining 8 µV max offset over 125 °C operation.