STMicroelectronics TS4061VIBT-205

Overview

TS4061VIBT-205 from STMicroelectronics is a precision micropower shunt voltage reference delivering a fixed 2.048 V output with ±0.2% initial accuracy, 20 ppm/°C typical temperature coefficient, and ultra-low 10 µA operating current at 25 °C. It operates across -40 to +85 °C and maintains stability with capacitive loads-ideal for high-resolution ADC biasing in portable instrumentation.

For engineers reviewing the TS4061VIBT-205 datasheet, TS4061VIBT-205 pinout, TS4061VIBT-205 application, or TS4061VIBT-205 equivalent, key selection criteria include shunt reference operating current range (7.5–15 mA), static impedance (0.15–0.3 Ω), thermal hysteresis (120 ppm), and SOT323-5L package compatibility with space-constrained PCB layouts.

Technical Context

The TS4061VIBT-205 functions as a two-terminal shunt reference: cathode and anode pins regulate voltage by sinking adjustable current through an external series resistor. Its bandgap-derived core achieves 70 ppm/°C max TC over -40 to +85 °C while maintaining <1 mV ΔVk/ΔIk across 10 µA–15 mA operating current.

Designed for low-noise analog signal chains, it delivers 90 µV_RMS wideband noise (10 Hz–10 kHz) and 45 µV_p-p low-frequency noise (0.1–10 Hz), with static impedance below 0.3 Ω ensuring minimal load-induced drift in precision DAC/ADC reference buffers.

Key Specifications

Pinout & Package

SOT323-5L is a 5-pin ultra-small surface-mount package (2.0 × 1.25 mm footprint) with three NC terminals, one anode, and one cathode-optimized for high-density PCBs where board space is constrained.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar shunt voltage reference applications.

Compared with TLVH431ACDBVR and ADR3420ARJZ-R7, the TS4061VIBT-205 uniquely balances 2.048 V native output, ±0.2% accuracy, 70 ppm/°C max TC, and 10 µA IQ in SOT323-5L-making it optimal for miniaturized, long-life, 12-bit precision systems where every µA and mm² matters.

Availability

TS4061VIBT-205 is available at Aetrix Electronics and suitable for portable data loggers, industrial 4–20 mA transmitters, and handheld multimeters requiring stable component supply, consistent parametric performance, and long-term lifecycle support.

Supply support for TS4061VIBT-205 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 sensing solutions for industrial, automotive, and consumer markets.

The TS4061V belongs to ST's precision analog reference product line, engineered specifically for ultra-low-power, high-accuracy voltage regulation in battery-operated and space-constrained measurement systems.

FAQ

What is the minimum cathode current required for regulation at -40 °C?

Per Table 5 and Figure 9, the TS4061VIBT-205 requires ≥12 µA minimum cathode current at -40 °C to maintain regulation. This increases from 7.5 µA at 25 °C due to reduced bandgap voltage stability at low temperatures-designers must size the series resistor accordingly for worst-case VIN and load conditions.

Can the TS4061VIBT-205 drive a 1 µF capacitive load directly?

Yes-the datasheet explicitly states "stable when used with capacitive loads" and Figure 16 shows clean turn-on transient with 1 µF output capacitance. No series isolation resistor is needed, unlike many shunt references; this simplifies layout and improves transient response in ADC reference buffering.

How does the 0.15–0.3 Ω static impedance affect reference accuracy under load variation?

This low impedance limits output voltage deviation to ≤450 µV when cathode current changes by 1.5 mA (e.g., from 10 µA to 1.51 mA), enabling stable reference performance even with pulsed loads like successive-approximation ADC sampling-critical for maintaining 12-bit monotonicity.

Is the SOT323-5L package RoHS-compliant and halogen-free?

Yes-the datasheet confirms ECOPACK® compliance, indicating full RoHS 2011/65/EU conformance and halogen-free construction per IEC 61249-2-21. The SOT323-5L variant carries ST's standard green packaging grade, verified in DS12599 Rev 1 Section 6.