REF3440 4.1-V low-drift low-power small-footprint series voltage reference | TI.com

REF3440 (ACTIVE) 4.1-V low-drift low-power small-footprint series voltage reference

4.1-V low-drift low-power small-footprint series voltage reference - REF3440
Datasheet
REF34xx Low-Drift, Low-Power, Small-Footprint Series Voltage Reference datasheet (Rev. B)
 

Recommended alternative parts

  • REF34-Q1  -  AEC-Q100 qualified version of this device

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.

 

 

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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Parametrics

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Part number Order VO (V) Initial accuracy (Max) (%) Temp coeff (Max) (ppm/ degree C) Rating Operating temperature range (C) Iout/Iz (Max) (mA) Iq (Typ) (uA) Shutdown current (Typ) (uA) Iq (Max) (uA) Features Package Group Vin (Min) (V) Vin (Max) (V)
REF3440 Order now 4.096     0.05     6     Catalog     -40 to 125     10     72     2.5     95     Enable pin
4-wire output    		 SOT-23 | 6     4.15     12    
REF3140 Order now 4.096     0.2     15
20    		 Catalog     -40 to 125     10     100       115       SOT-23 | 3     4.146     5.5    
REF34-Q1 Order now 2.5
3
3.3
4.096
5    		 0.05     6     Automotive     -40 to 125     10     72     2.5     95     Enable pin
4-wire output    		 SOT-23 | 6     2.55     12    
REF3425 Order now 2.5     0.05     6     Catalog     -40 to 125     10     72     2.5     95     Enable pin
4-wire output    		 SOT-23 | 6     2.55     12    
REF3430 Order now 3     0.05     6     Catalog     -40 to 125     10     72     2.5     95     Enable pin
4-wire output    		 SOT-23 | 6     3.05     12    
REF3433 Order now 3.3     0.05     6     Catalog     -40 to 125     10     72     2.5     95     Enable pin
4-wire output    		 SOT-23 | 6     3.35     12    
REF3450 Order now 5     0.05     6     Catalog     -40 to 125     10     72     2.5     95     Enable pin
4-wire output    		 SOT-23 | 6     5.05     12    
REF5040 Order now 4.096