Texas Instruments REF4132B30DBVR

Overview

REF4132B30DBVR from Texas Instruments is a precision 3.0 V CMOS series voltage reference with ±0.05% initial accuracy, 30 ppm/°C max temperature coefficient (B grade), 100 µA max quiescent current, ±10 mA output drive capability, and 15 µV_PP (0.1–10 Hz) low-frequency noise-designed for high-resolution data acquisition systems requiring stable, low-drift excitation in industrial analog I/O modules.

For engineers reviewing the REF4132B30DBVR datasheet, REF4132B30DBVR pinout, REF4132B30DBVR application, or REF4132B30DBVR equivalent, key selection criteria include dropout voltage at 10 mA load (≤500 mV), thermal hysteresis (35 ppm), long-term stability (30 ppm/1000 hrs), enable pin logic thresholds (1.6 V high / 0.5 V low), and SOT-23-5 package compatibility with space-constrained PCB layouts.

Technical Context

The REF4132B30DBVR implements a trimmed bandgap core with integrated output buffer and enable-controlled shutdown mode. Its architecture supports bidirectional ±10 mA load current while maintaining <120 ppm/mA load regulation and <15 ppm/V line regulation across −40°C to +125°C.

It features a dedicated EN pin that switches the device between active mode (80–100 µA IQ) and shutdown mode (<5 µA IQ), with defined logic thresholds and no internal pull-up. The output remains high-impedance during shutdown, enabling use in multiplexed reference architectures without loading adjacent channels.

Key Specifications

Pinout & Package

SOT-23-5 (DBV) package: 2.90 mm × 1.60 mm body, 0.95 mm height, gull-wing leads, JEDEC MO-178AC compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with REF4132A30DBVR, the REF4132B30DBVR trades 18 ppm/°C higher tempco for lower cost and identical packaging; versus LM4132BMF-3.0/NOPB, it adds enable control and cuts noise by 40% without increasing footprint or supply current.

Availability

REF4132B30DBVR is available at Aetrix Electronics and suitable for data acquisition systems, PLC analog I/O modules, and field transmitters requiring stable component supply with guaranteed long-term manufacturability and consistent parametric performance.

Supply support for REF4132B30DBVR 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 company specializing in analog and embedded processing technologies, with leadership in precision analog ICs since 1958.

The REF4132 product line delivers low-drift, low-power, small-footprint voltage references optimized for high-resolution data converters in industrial, test & measurement, and portable instrumentation applications.

FAQ

What is the maximum load current supported by the REF4132B30DBVR?

The REF4132B30DBVR supports ±10 mA output current-capable of sourcing and sinking up to 10 mA while maintaining specified accuracy and noise performance. At 10 mA load, dropout voltage is ≤500 mV, and load regulation is ≤120 ppm/mA. Exceeding ±10 mA risks output voltage deviation beyond specifications and potential thermal stress.

Does the REF4132B30DBVR require an external output capacitor?

Yes, the REF4132B30DBVR requires a minimum 0.1 µF ceramic capacitor at the VREF pin for stability-TI specifies stable operation with 0.1 µF to 10 µF capacitive loads. X7R or X5R dielectrics are recommended; electrolytic types must be paralleled with 0.1 µF ceramic to maintain low ESR and prevent oscillation.

How does the enable pin (EN) function on the REF4132B30DBVR?

The EN pin on the REF4132B30DBVR controls active/shutdown modes: ≥1.6 V enables normal operation (IQ ≤100 µA); ≤0.5 V places the device in shutdown (IQ <5 µA) with high-impedance VREF output. Voltages between 0.5 V and 1.6 V must be avoided-they cause unstable IQ and possible startup failure. Tie EN to VIN if shutdown is unused.

What is the thermal hysteresis specification for the REF4132B30DBVR?

The REF4132B30DBVR has a thermal hysteresis of 35 ppm-measured as output voltage change after cycling from 25°C → −40°C → +125°C → 25°C. This corresponds to ≤±1.05 mV hysteresis error on the 3.0 V output, critical for applications requiring repeatable calibration after environmental exposure.

Can the REF4132B30DBVR be used to generate a negative reference voltage?

Yes, the REF4132B30DBVR can generate a precise negative reference when paired with an op amp like OPA735 in an inverting configuration. Figure 19 in the datasheet shows a verified design using matched resistors (R1 = R2 = 10 Ω) to create ±3.0 V from a 5 V supply-leveraging the REF4132B30DBVR's low drift and noise to minimize error in split-supply systems.