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Product details

Parameters

VO (V) 2.5 Initial accuracy (Max) (%) 0.05 Temp coeff (Max) (ppm/ degree C) 6 Rating Catalog Vin (Min) (V) 2.55 Vin (Max) (V) 12 Iq (Typ) (uA) 72 Features Enable pin, 4-wire output Iout/Iz (Max) (mA) 10 Operating temperature range (C) -40 to 125 Shutdown current (Typ) (uA) 2.5 open-in-new Find other Series voltage references

Package | Pins | Size

SOT-23 (DBV) 6 5 mm² 2.9 x 1.6 open-in-new Find other Series voltage references

Features

  • Initial Accuracy: ±0.05% (Maximum)
  • Temperature Coefficient : 6 ppm/°C (Maximum)
  • Operating Temperature Range: −40°C to +125°C
  • Output Current: ±10 mA
  • Low Quiescent Current: 95 µA (Maximum)
  • Wide Input Voltage: 12 V
  • Output 1/f Noise (0.1 Hz to 10 Hz): 3.8 µVPP/V
  • Excellent Long-Term Stability 25 ppm/1000 hrs
  • Small Footprint 6-Pin SOT-23 Package

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Description

The REF34xx device is a low temperature drift
(6 ppm/°C), low-power, high-precision CMOS voltage reference, featuring ±0.05% initial accuracy, low operating current with power consumption less than 95 µA. This device also offers very low output noise of 3.8 µVp-p /V, which enables its ability to maintain high signal integrity with high-resolution data converters in noise critical systems. With a small SOT-23 package, REF34xx offers enhanced specifications and pin-to-pin replacement for MAX607x and ADR34xx. The REF34xx family is compatible to most of the ADC and DAC such as ADS1287, ADUCM360, ADS1112.

Stability and system reliability are further improved by the low output-voltage hysteresis of the device and low long-term output voltage drift. Furthermore, the small size and low operating current of the devices (95 µA) can benefit portable and battery-powered applications.

REF34xx is specified for the wide temperature range of −40°C to +125°C. Contact the TI sales representative for additional voltage options.

 

 

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Exact equivalent in functionality and parametrics to the compared device:
REF34-Q1 ACTIVE Automotive, low-drift, low-power small-footprint series voltage reference AEC-Q100 qualified version of this device

Technical documentation

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARDS Download
document-generic User guide
Description
The PSEMTHR24EVM-081 mother board features 24 port 2pair/4pair PSE system. When paired with the TPS23881EVM-083 48-channel 4-Pair (90W) PSE daughter card or TPS23882EVM-084 24-channel 2-Pair (30W) PSE daughter card and PSEMCUDAUEVM-082 MCU daughter card (sold separately), users can evaluate this (...)
Features
  • 24 port PoE PSE system and expandable to 48 ports
  • Highly flexible system with configurable GUI and host interface
  • Multiport power management
  • IEEE802.3bt compliance
  • Mutiple power supplies
  • Supporting Legacy PD

Design tools & simulation

SIMULATION MODELS Download
SBAM336.TSC (80 KB) - TINA-TI Reference Design
SIMULATION MODELS Download
SBAM421.ZIP (21 KB) - TINA-TI Spice Model

Reference designs

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TIDA-050026-23882 — This reference design showcases a Type-3, 30W, 2-Pair 24-port Ethernet switch for Power over Ethernet (PoE) applications which can send up to 30W per port for IEEE 802.3bt Type 3 applications and up to 60W per port for non-standard applications. Based on the MSP430F523x family, TI's TPS2388x FirmPSE (...)
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Isolated power architecture reference design for communication and analog input/output modules
TIDA-00300 This reference design provides a simple means through which to isolate I2C or SPI type communication lines. This is often required in Grid Infrastructure applications such as, protertion relays and circuit breakers, where high voltages are involved. This reference design provides the complete (...)
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High Accuracy Analog Front End Using 16-Bit SAR ADC with ±10V Measurement Range Reference Design
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Non-isolated power architecture with diagnostics reference design for protection relay modules
TIDA-010055 — This reference design showcases non-isolated power supply architectures for protection relays with analog input/output and communication modules generated from 5-, 12-, or 24-V DC input. To generate the power supplies the design uses DC/DC converters with an integrated FET, a power module with an (...)
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HART-enabled PLC analog input module reference design
TIDA-060020 — This reference design is a single-channel, 4-mA to 20-mA analog input module that supports the highway addressable remote transducer (HART) communication protocol, enabling bidirectional digital communication between field transmitters and programmable logic controllers (PLCs). The loop current (...)
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High Accuracy ±0.5% Current and Isolated Voltage Measurement Ref Design Using 24-Bit Delta-Sigma ADC
TIDA-00835 The TIDA-00835 reference design allows for accurate voltage and current measurement using a bipolar input configuration by incorporating a four- channel, 24-bit simultaneously-sampling differential input Delta-Sigma ADC over wide dynamic range. The ADC is configured to measure ±2.5 V bipolar (...)
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CAD/CAE symbols

Package Pins Download
SOT-23 (DBV) 6 View options

Ordering & quality

Support & training

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Videos

Voltage Reference Use Cases

Beyond the scope of signal chain conditioning, see other voltage reference use cases in this informative video.

Posted: 07-Jan-2018
Duration: 05:53

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