STMicroelectronics TSV631AILT

Overview

TSV631AILT from STMicroelectronics is a rail-to-rail input/output CMOS operational amplifier optimized for ultra-low-power, precision signal conditioning in battery-powered systems. It delivers 880 kHz gain bandwidth at 60 µA quiescent current (5 V), supports 1.5 V to 5.5 V supply, achieves ±35 mV output swing from rails (RL = 10 kΩ), and operates across –40 °C to +125 °C - enabling use in automotive sensor interfaces and portable medical devices.

For engineers reviewing the TSV631AILT datasheet, TSV631AILT pinout, TSV631AILT application, or TSV631AILT equivalent, key selection criteria include its 1 pA input bias current, 500 µV max offset voltage (A-grade), shutdown current of 5 nA, unity-gain stability with 100 pF capacitive loads, and DFN6 1.2×1.3 mm package compatibility with space-constrained PCB layouts.

Technical Context

The TSV631AILT employs complementary PMOS/NMOS input stages to achieve true rail-to-rail input operation over (V_CC–) – 0.1 V to (V_CC+) + 0.1 V, with no phase reversal. Its output stage drives ±63 mA at 5 V while maintaining <35 mV saturation voltage under 10 kΩ load.

Internally trimmed for narrow parameter dispersion, it guarantees minimum GBP = 730 kHz and SR = 0.25 V/µs across temperature, with CMRR ≥ 60 dB and PSRR ≥ 75 dB at 5 V - ensuring stable DC accuracy and noise immunity in low-voltage mixed-signal circuits.

Key Specifications

Pinout & Package

TSV631AILT is housed in a 6-pin DFN (1.2 mm × 1.3 mm, 0.4 mm pitch) package with wettable flanks, optimized for automated optical inspection and high-density routing. The exposed pad is electrically connected to V_CC– (GND) for thermal and EMI performance.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar low-power, rail-to-rail op-amp applications.

Compared with TSV631AILT, TSV621ILT trades bandwidth for lower power in static sensing, while TSV521ILT prioritizes speed over offset voltage - making TSV631AILT the optimal balance for precision, low-power, wide-temperature applications requiring both DC accuracy and usable AC response.

Availability

TSV631AILT is available at Aetrix Electronics and suitable for battery-powered medical wearables, automotive cabin sensors, and industrial wireless sensor nodes requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for TSV631AILT 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, analog chips, and MEMS sensors for industrial, automotive, and consumer markets.

The TSV63x series belongs to ST's precision low-power op-amp product line, engineered specifically for energy-constrained, high-accuracy signal conditioning in automotive and portable medical applications where rail-to-rail operation and extended temperature reliability are mandatory.

FAQ

What is the maximum capacitive load the TSV631AILT can drive without oscillation?

The TSV631AILT is unity-gain stable and guaranteed to drive up to 100 pF capacitive loads without external compensation. For larger loads, an in-series resistor (e.g., 10–100 Ω) at the output is recommended to maintain phase margin above 48°, as verified in Figure 3 and Section 4.6 of the datasheet. Bench validation is required for loads exceeding 100 pF.

Does the TSV631AILT have a shutdown pin, and how is it controlled?

Yes - Pin 6 is the active-low SHDN terminal. Pulling it to V_CC– (GND) places the amplifier in shutdown mode with 5 nA typical supply current; pulling it to V_CC+ enables normal operation at 60 µA. The pin must never float and has defined VIH (4.5 V min at 5 V supply) and VIL (0.5 V max) thresholds per Table 7.

Can the TSV631AILT operate from a 1.5 V supply, and what performance is guaranteed?

Yes - the device is fully specified from 1.5 V to 5.5 V. At 1.5 V, it maintains rail-to-rail input/output, 700 kHz min GBP, 0.2 V/µs min slew rate, and 60 µA typical supply current. Key parameters including offset voltage, CMRR, and output drive are characterized down to 1.5 V and guaranteed across –40 °C to +125 °C per Tables 3–6.

Is the TSV631AILT pin-compatible with other devices in the TSV63x family?

TSV631AILT shares identical pinout and package (DFN6 1.2×1.3 mm) with TSV630AILT, TSV631ILT, and TSV630ILT. However, TSV630 variants include a shutdown function (same pin), while TSV631 variants omit shutdown - meaning TSV631AILT cannot replace TSV630AILT in shutdown-enabled designs without circuit modification.