Texas Instruments REF35160YBHR

Overview

REF35160YBHR from Texas Instruments is a nanopower, high-precision series voltage reference delivering 1.6V output with ±0.05% initial accuracy, 10ppm/°C max temperature coefficient (−40°C to +85°C), and 650nA typical quiescent current. It operates across −55°C to +125°C and supports precision sensor biasing and 12–16-bit data converter reference applications in portable industrial instrumentation.

For engineers reviewing the REF35160YBHR datasheet, REF35160YBHR pinout, REF35160YBHR application, or REF35160YBHR equivalent, key selection criteria include ultra-low IQ, WCSP package thermal performance, noise reduction (NR) pin capability, EN-controlled shutdown, and load regulation stability under ±5mA sink/source conditions.

Technical Context

The REF35160YBHR implements a bandgap-based series reference architecture with internal curvature compensation to achieve low temperature drift. Its 4-pin WCSP package enables minimal board area while maintaining full functionality including enable control, noise reduction capacitor interface, and dual ground paths for improved PSRR.

It features active-mode quiescent current of 0.65µA (typ), 120mV dropout at 5mA load, and 3.3ppm_P-P 0.1Hz–10Hz output noise-optimized for high-resolution ADCs and low-power sensor signal chains where long-term stability (40ppm at 1k hour) and thermal hysteresis (70ppm) are critical.

Key Specifications

Pinout & Package

REF35160YBHR uses a 4-pin wafer chip-scale package (WCSP, YBH) measuring 1.05mm × 0.84mm with bottom-side solder bumps. The compact footprint supports high-density PCB layouts in space-constrained modules such as optical transceivers and wearable biosensors.

Key Features

Applications

Equivalent & Alternatives

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

Compared with REF35160YBHR, REF34160RTER offers superior temperature stability at higher power cost, while ADR3416ARJZ-R7 provides comparable accuracy without integrated enable-making REF35160YBHR optimal for battery-constrained, thermally variable applications requiring active power gating.

Availability

REF35160YBHR is available at Aetrix Electronics and suitable for flow transmitter calibration, blood glucose monitor production, and servo drive control module manufacturing requiring stable component supply with guaranteed long-term availability.

Supply support for REF35160YBHR 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

Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of expertise in precision voltage references and low-power signal chain solutions.

The REF35 family was designed specifically for ultra-low-power, high-accuracy applications-including portable medical devices, industrial sensors, and battery-operated test equipment-where nanoscale IQ and ppm-level stability are non-negotiable.

FAQ

What is the maximum operating temperature range for REF35160YBHR?

The REF35160YBHR is fully specified from −40°C to +85°C with 10ppm/°C max temperature coefficient, and remains functional across −55°C to +125°C. This extended functional range supports deployment in harsh industrial environments such as motor control cabinets and outdoor power quality monitors where ambient temperatures exceed standard commercial limits. The REF35160YBHR maintains stability within datasheet limits throughout its specified range.

Does REF35160YBHR require an external capacitor on the NR pin?

The NR pin on REF35160YBHR is optional: it may be left floating for standard operation or connected to a capacitor (typically 1µF–10µF) to reduce 0.1Hz–10Hz output noise by up to 50%. When used, the capacitor must be placed close to the pin with short traces to avoid instability. No external capacitor is required for basic functionality, and the REF35160YBHR meets all specifications without it.

What is the minimum input voltage required for REF35160YBHR to regulate properly?

The minimum input voltage for REF35160YBHR is 1.7V, as specified for VREF = 1.024V to 1.5V variants. Since REF35160YBHR has a 1.6V output, it falls within this group and requires VIN ≥ 1.7V. At 5mA load, the dropout voltage is 120mV, meaning VIN must exceed VREF + VDO (i.e., 1.72V) to maintain regulation. Operation below 1.7V risks loss of regulation and increased output error.

Can REF35160YBHR sink current, and if so, how much?

Yes, REF35160YBHR can sink up to −5mA while maintaining output accuracy within specifications. Its bidirectional output stage supports both sourcing (up to +10mA) and sinking (up to −5mA), enabling direct interface with current-output DACs, transimpedance amplifiers, and active filter configurations. Load regulation is specified at 40ppm/mA for sinking, corresponding to ≤64µV shift per mA of sink current at 1.6V output.

How does the WCSP package of REF35160YBHR impact thermal performance compared to SOT-23?

The YBH WCSP package of REF35160YBHR has a junction-to-ambient thermal resistance (θ_JA) of 178.9°C/W, slightly higher than the 164.4°C/W of the SOT-23 (DBV) variant. However, its smaller footprint (1.05mm × 0.84mm vs. 2.90mm × 1.60mm) reduces thermal mass and improves transient response. The WCSP's bottom-side thermal path also enables better heat spreading into the PCB copper, making it preferable for high-density, thermally constrained designs where board area is more critical than marginal θ_JA differences. REF35160YBHR leverages this for space-sensitive applications like optical modules.