REF2025 (ACTIVE)

8ppm/°C Drift, Low-Power, Dual-Output Vref and Vref/2 Voltage Reference

8ppm/°C Drift, Low-Power, Dual-Output Vref and Vref/2 Voltage Reference - REF2025
 

Description

Applications with only a positive supply voltage often require additional stable voltage in the middle of the analog-to-digital converter (ADC) input range to bias input bipolar signals. The REF20xx provides a reference voltage (VREF) for the ADC and a second highly-accurate voltage (VBIAS) that can be used to bias the input bipolar signals.

The REF20xx offers excellent temperature drift (8 ppm/°C, max) and initial accuracy (0.05%) on both the VREF and VBIAS outputs while operating at a quiescent current less than 430 µA. In addition, the VREF and VBIAS outputs track each other with a precision of 6 ppm/°C (max) across the temperature range of –40°C to 85°C. All these features increase the precision of the signal chain and decrease board space, while reducing the cost of the system as compared to a discrete solution. Extremely low dropout voltage of only 10 mV allows operation from very low input voltages, which can be very useful in battery-operated systems.

Both the VREF and VBIAS voltages have the same excellent specifications and can sink and source current equally well. Very good long-term stability and low noise levels make these devices ideally-suited for high-precision industrial applications.

Features

  • Two Outputs, VREF and VREF / 2, for Convenient Use in Single-Supply Systems
  • Excellent Temperature Drift Performance:
    • 8 ppm/°C (max) from –40°C to 125°C
  • High Initial Accuracy: ±0.05% (max)
  • VREF and VBIAS Tracking over Temperature:
    • 6 ppm/°C (max) from –40°C to 85°C
    • 7 ppm/°C (max) from –40°C to 125°C
  • Microsize Package: SOT23-5
  • Low Dropout Voltage: 10 mV
  • High Output Current: ±20 mA
  • Low Quiescent Current: 360 µA
  • Line Regulation: 3 ppm/V
  • Load Regulation: 8 ppm/mA

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Parametrics Compare all products in Series Voltage Reference

 
VO (V)
Initial Accuracy (Max) (%)
Temp Coeff (Max) (ppm/ degree C)
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)
REF2025 REF2030 REF2033 REF2041
2.5
1.25   
3
1.5   
3.3
1.65   
4.096
2.048   
0.05    0.05    0.05    0.05   
8    8    8    8   
-40 to 125    -40 to 125    -40 to 125    -40 to 125   
20    20    20    20   
360    360    360    360   
3.3    3.3    3.3    3.3   
430    430    430    430   
Multiple outputs
Enable pin   
Multiple outputs
Enable pin   
Multiple outputs
Enable pin   
Multiple outputs
Enable pin   
SOT-23-THIN    SOT-23-THIN    SOT-23-THIN    SOT-23-THIN   
2.52    3.02    3.32    4.116   
5.5    5.5    5.5    5.5