REF34-Q1 Automotive low-drift low-power small-footprint series voltage reference | TI.com

REF34-Q1 (ACTIVE) Automotive low-drift low-power small-footprint series voltage reference

 

Recommended alternative parts

  • REF3425  -  Catalog version of the device with a 2.5-V output
  • REF3430  -  Catalog version of the device with a 3-V output
  • REF3433  -  Catalog version of the device with a 3.3-V output
  • REF3440  -  Catalog version of the device with a 4.096-V output
  • REF3450  -  Catalog version of the device with a 5-V output

Description

The REF34-Q1 devices are low-temperature-drift
(6 ppm/°C), low-power, high-precision CMOS voltage references. The devices have ±0.05% initial accuracy and low operating current with power consumption less than 95 µA. These devices also offer very low output noise of 3.8 µVPP/V, which enable the devices to maintain high signal integrity with high-resolution data converters and noise critical systems.

Stability and system reliability are further improved by the low output-voltage hysteresis of these devices and low long-term output voltage drift. Furthermore, the small size and low operating current of the devices (95 µA) make them an excellent choise for battery-powered applications. The REF34-Q1 features an enable pin that can set the device into shutdown where it consumes a low stand by current (3 µA) to help with overall system power during standby.

The REF34-Q1 family is specified for the wide temperature range of −40°C to +125°C. Contact the TI sales representative for additional voltage options.

Features

  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C6
  • Initial Accuracy: ±0.05% (Maximum)
  • Temperature Coefficient : 6 ppm/°C (Maximum)
  • Operating Temperature Range: −40°C to +125°C
  • Output Voltage Options: 2.5V, 3.0V, 3.3V, 4.096V, 5.0V
  • Output Current: ±10 mA
  • Low Quiescent Current: 95 µA (maximum)
  • Low Shutdown Mode Current: 3 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)
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    
LM4128 Order now 1.8
2.048
2.5
3
3.3
4.096    
0.1
0.2
0.5
1    
100
75    
Catalog     -40 to 125     20     60     3     100     Enable pin     SOT-23 | 5     2.2     5.5    
LM4128-Q1 Order now 1.8
2.048
2.5
3
3.3
4.096    
0.1
0.2
0.5
1    
100
75    
Automotive     -40 to 125     20     60     3     100     Enable pin     SOT-23 | 5     2.2     5.5    
LM4132 Order now 1.8
2.048
2.5
3
3.3
4.096    
0.05
0.1
0.2
0.4    
10
20
30    
Catalog     -40 to 125     20     60     3     100     Enable pin     SOT-23 | 5     2.2     5.5    
LM4132-Q1 Order now 2.5
3
3.3    
0.05
0.1
0.2
0.4    
10
20
30    
Automotive     -40 to 125     20     60     3     100     Enable pin     SOT-23 | 5     2.2     5.5    
REF3140 Order now 4.096     0.2     15
20    
Catalog     -40 to 125     10     100       115       SOT-23 | 3     4.146     5.5    
REF3425 Order now 2.5     0.05