STMicroelectronics TSV734IQ4T

Overview

TSV734IQ4T from STMicroelectronics is a quad rail-to-rail input/output CMOS operational amplifier optimized for ultra-low-power, high-accuracy signal conditioning in battery-powered systems. It delivers 200 µV max input offset voltage, 60 µA supply current per channel at 5 V, 900 kHz gain bandwidth, and operates from 1.5 V to 5.5 V across –40 °C to +125 °C - enabling precision sensor front-ends in portable medical devices.

For engineers reviewing the TSV734IQ4T datasheet, TSV734IQ4T pinout, TSV734IQ4T application, or TSV734IQ4T equivalent, key selection criteria include micropower operation under 1.8 V, EMI-hardened performance at 41–66 dB (400–2400 MHz), rail-to-rail I/O swing within 40 mV/75 mV of rails, and guaranteed 200 µV offset at 25 °C with 4.5 µV/°C drift over temperature.

Technical Context

The TSV734IQ4T implements a CMOS input stage with 1 pA typical input bias current and rail-to-rail input common-mode range (VCC− −0.1 V to VCC+ +0.1 V), enabling direct interfacing with low-output-impedance sensors and ADC reference buffers. Its internal compensation ensures stable unity-gain operation with 48° phase margin and 15 dB gain margin at 5 V.

It features EMI hardening via on-die filtering and achieves 4 kV HBM ESD tolerance, while its 5 ms power-up initialization time guarantees functional stability after supply ramp. The device supports capacitive loads up to 100 pF without oscillation in closed-loop follower configuration.

Key Specifications

Pinout & Package

TSV734IQ4T is housed in a 16-pin QFN package (3 mm × 3 mm, 0.5 mm pitch) with exposed thermal pad. The package supports efficient heat dissipation in space-constrained PCB layouts and enables automated optical inspection (AOI) compatibility.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV9054 and MAX44260, TSV734IQ4T uniquely balances micropower (60 µA), high accuracy (200 µV), and usable bandwidth (900 kHz) - making it optimal for battery-powered medical and industrial sensors needing both longevity and precision.

Availability

TSV734IQ4T is available at Aetrix Electronics and suitable for portable medical devices, industrial sensor transmitters, and smart home safety systems requiring stable component supply across extended temperature and long-lifecycle programs.

Supply support for TSV734IQ4T 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 analog, MCU, power, and sensor solutions for industrial, automotive, and consumer markets.

The TSV73x series was developed specifically for ultra-low-power, high-accuracy signal conditioning in battery-constrained applications - emphasizing rail-to-rail operation, EMI resilience, and extended temperature robustness from a single 5 V CMOS process.

FAQ

What is the maximum capacitive load the TSV734IQ4T can drive stably in unity-gain configuration?

The TSV734IQ4T maintains stability with up to 100 pF capacitive load in unity-gain follower configuration, as verified in Figure 13 of the datasheet. This allows direct driving of ADC input capacitors or long PCB traces without external isolation resistors - provided the output load remains resistive ≥10 kΩ and supply decoupling (100 nF ceramic + 1 µF tantalum) is placed within 2 mm of pins 4/8/12/16.

Does the exposed thermal pad on the QFN package require electrical connection?

Yes - the exposed pad is internally tied to VCC− (ground) and must be soldered to a PCB copper pour connected to the system ground plane. This connection is essential for thermal dissipation (Rthja = 45 °C/W), EMI suppression, and achieving specified 4 kV HBM ESD rating. Floating or unconnected pads cause thermal derating and increased susceptibility to RF interference.

Can the TSV734IQ4T operate reliably at 1.5 V supply with full rail-to-rail output swing?

Yes - the device is fully characterized and guaranteed from 1.5 V to 5.5 V. At 1.5 V, output swing remains rail-to-rail within 50 mV of each rail under 10 kΩ load (per Figure 8), and input common-mode range extends from –0.1 V to +1.6 V. All key parameters including offset (≤650 µV) and supply current (≤85 µA) remain valid across this range at –40 °C to +125 °C.

How does the EMI hardening manifest in real-world PCB layout?

EMI hardening is achieved through on-die RF filtering and optimized internal node shielding - verified by 41–66 dB rejection across 400–2400 MHz. In practice, this eliminates need for external ferrite beads or RC filters on inputs. Layout best practices still apply: keep input traces short, use ground guard rings around sensitive nodes, and place 100 nF decoupling caps within 2 mm of each VCC pin to maintain immunity during RF burst exposure.