STMicroelectronics TSZ151IYLT

Overview

TSZ151IYLT from STMicroelectronics is a single-channel, rail-to-rail input/output zero-drift operational amplifier optimized for high-accuracy automotive sensor signal conditioning. It delivers ±7 µV max offset voltage at 25 °C, 1.6 MHz gain bandwidth product, and operates from 1.8 V to 5.5 V supply with only 210 µA quiescent current - enabling precision current sensing in battery-powered ADAS modules.

For engineers reviewing the TSZ151IYLT datasheet, TSZ151IYLT pinout, TSZ151IYLT application, or TSZ151IYLT equivalent, this device is selected for AEC-Q100 qualified systems requiring stable DC accuracy across -40 °C to 125 °C, ultra-low input bias current (≤200 pA), and EMI robustness (91 dB @ 2.4 GHz) in compact SOT23-5 packaging.

Technical Context

This op amp employs auto-zeroing architecture to achieve near-zero drift (±10 µV over full temperature range) and maintains rail-to-rail operation with 0.8 V/µs slew rate and 60° phase margin at 100 pF load. Its CMRR (115–132 dB) and PSRR (110–140 dB) remain stable across 1.8–5.5 V supply and full temperature range.

The device features ultra-low input voltage noise (27–33 nV/√Hz), sub-µVpp low-frequency noise (0.5–0.57 µVpp, 0.1–10 Hz), and fast overload recovery (2–5 µs), making it suitable for high-gain, low-noise front-end stages in shunt-based current monitors and bridge sensor interfaces.

Key Specifications

Pinout & Package

SOT23-5 package: 2.9 mm × 1.6 mm × 1.1 mm body, 0.95 mm pitch, exposed pad optional for thermal enhancement.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TSZ121ILT and TSZ181ILT, the TSZ151IYLT uniquely balances 1.6 MHz bandwidth and 210 µA consumption - making it optimal for mid-speed, high-accuracy applications like battery monitoring and coolant sensing where both precision and responsiveness matter.

Availability

TSZ151IYLT is available at Aetrix Electronics and suitable for automotive battery management, engine control unit signal conditioning, and ADAS sensor interface designs requiring stable component supply across extended temperature and lifecycle demands.

Supply support for TSZ151IYLT 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, specializing in automotive-grade analog, power, and microcontroller solutions with vertical manufacturing and AEC-Q100 process validation.

The TSZ151 series belongs to ST's precision zero-drift op amp product line, engineered specifically for automotive sensor signal chains demanding uncompromised DC accuracy, EMI resilience, and extended temperature operation.

FAQ

What is the maximum capacitive load the TSZ151IYLT can drive without instability?

The TSZ151IYLT remains stable with up to 100 pF capacitive load when configured as a unity-gain follower with no series isolation resistor. For loads >100 pF, a minimum 50 Ω series resistor at the output is required to maintain ≥60° phase margin, as validated in Figure 33 and Figure 34 of DS14459 Rev 4.

Does the TSZ151IYLT support single-supply operation down to 1.8 V?

Yes - the TSZ151IYLT is fully specified from 1.8 V to 5.5 V supply, with rail-to-rail input common-mode range extending 0.1 V beyond both rails and rail-to-rail output swing within 30 mV of each rail at 10 kΩ load, per Table 5 and Table 6 in DS14459 Rev 4.

How does the EMI rejection performance compare between TSZ151IYLT and standard precision op amps?

The TSZ151IYLT achieves 91 dB EMIRR at 2.4 GHz - 20–30 dB higher than typical precision op amps - due to proprietary input-stage filtering and layout hardening. This is measured per AEC-Q100-002 and documented in Table 6, eliminating need for external ferrite beads in infotainment-proximate modules.

Is the exposed pad on the SOT23-5 package electrically connected or thermal-only?

The exposed pad on TSZ151IYLT (SOT23-5) is not internally connected to any die node; it is a thermal pad only. ST recommends soldering it to a PCB copper pour for improved thermal dissipation but explicitly states it may be left floating or grounded per system-level EMI requirements, per DS14459 Rev 4 section 1.2.