STMicroelectronics TSV321RAIYLT

Overview

TSV321RAIYLT from STMicroelectronics is a single-channel, rail-to-rail input/output operational amplifier optimized for automotive-grade applications. It operates from 2.5 V to 6 V, delivers 80 mA output current, achieves 1.3 MHz gain bandwidth at 3 V, and supports extended common-mode input range (VDD − 0.2 V to VCC + 0.2 V) at 25 °C - enabling precision signal conditioning in battery-powered ADAS sensor interfaces.

For engineers reviewing the TSV321RAIYLT datasheet, TSV321RAIYLT pinout, TSV321RAIYLT application, or TSV321RAIYLT equivalent, key selection criteria include its AEC-Q100 qualification, −40 °C to +125 °C operating range, SOT23-5 package thermal resistance (250 °C/W), and rail-to-rail output swing within 100 mV of each rail under 600 Ω load.

Technical Context

This op-amp uses a CMOS input stage enabling rail-to-rail input voltage range beyond supply rails by ±200 mV and rail-to-rail output swing down to 100 mV from each rail with 600 Ω load. Its internal architecture supports stable operation driving capacitive loads up to 500 pF without external compensation.

Designed for low-voltage portable and automotive systems, it features 27 nV/√Hz input voltage noise, 0.42–0.6 V/µs slew rate, and 60–85 dB common-mode rejection ratio across 2.5–6 V supply range - ensuring fidelity in sensor front-ends and audio driver stages where power supply headroom is constrained.

Key Specifications

Pinout & Package

SOT23-5 package: compact 5-pin surface-mount outline with exposed pad option (not applicable here); thermal resistance junction-to-ambient = 250 °C/W; footprint compatible with JEDEC MO-178.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar single-channel rail-to-rail op-amp applications.

Compared with LMV321QDRYR and TSV851ICT, TSV321RAIYLT uniquely combines AEC-Q100 Grade 0 qualification, 80 mA drive, and extended Vicm - making it the only option among the three qualified for engine compartment signal conditioning with demanding load and temperature requirements.

Availability

TSV321RAIYLT is available at Aetrix Electronics and suitable for ADAS radar modules, EPS torque sensor interfaces, engine coolant temperature monitoring, and automotive cabin microphone preamps requiring stable component supply across extended temperature ranges and automotive lifecycle commitments.

Supply support for TSV321RAIYLT 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 management ICs, sensors, and analog components for automotive, industrial, and consumer markets.

The TSV3xx family targets cost-sensitive, low-voltage analog signal conditioning in automotive and portable systems - delivering rail-to-rail performance and AEC-Q100 compliance without premium pricing.

FAQ

Is TSV321RAIYLT pin-compatible with standard LM321 or LMV321?

No. TSV321RAIYLT uses SOT23-5 pinout (OUT/−IN/+IN/V−/V+), whereas LM321 (SO8) and LMV321 (SOT23-5) share identical pin mapping but differ in electrical specs: LMV321 lacks AEC-Q100 qualification and has lower output drive (40 mA). Direct replacement requires validation of offset, noise, and thermal performance in target circuit.

What is the maximum capacitive load the TSV321RAIYLT can drive without instability?

The device remains stable with up to 500 pF capacitive load at unity gain, as verified in the datasheet's phase margin characterization (≥53° at CL = 100 pF). For loads >500 pF, a series isolation resistor (≥10 Ω) between output and capacitor is required to maintain stability per Figure 14–15 frequency response data.

Does the "RA" in TSV321RAIYLT indicate enhanced input offset voltage specification?

Yes. The "RA" suffix denotes the TSV321A variant, which specifies 0.1 mV typical input offset voltage (vs. 0.2 mV for standard TSV321) and 3 µV/°C max drift - confirmed in Table 3 and Table 4 of DS4381 Rev 9. This grade is selected for precision sensor front-ends where DC error directly impacts measurement accuracy.

Can TSV321RAIYLT operate reliably at 2.5 V supply with full rail-to-rail output swing?

Yes. At VCC = 2.5 V, the output swings within 100 mV of each rail under 600 Ω load (per datasheet Section 2, VOH/VOL specs), and input common-mode range extends to VDD − 0.2 V and VCC + 0.2 V. However, GBP drops to ~1 MHz and slew rate decreases slightly - verified in Figures 14–15 and Table 3 test conditions.