Low Noise, Micropower
5.0 V Precision Voltage Reference
ADR293
FEATURES
PIN CONFIGURATIONS
6.0 V to 15 V supply range
NC
1
2
3
4
8
7
6
5
NC
NC
ADR293
TOP VIEW
(Not to Scale)
V
Supply current: 15 μA maximum
Low noise: 15 μV p-p typical (0.1 Hz to 10 Hz)
High output current: 5 mA
IN
NC
V
OUT
GND
NC
NC = NO CONNECT
Temperature range: −40°C to +125°C
Pin-compatible with the REF02/REF19x
Figure 1. 8-Lead Narrow Body SOIC (R-8)
APPLICATIONS
Portable instrumentation
Precision reference for 5 V systems
ADC and DAC reference
Solar-powered applications
Loop-current powered instruments
1
2
3
4
NC
8
7
6
5
NC
NC
V
ADR293
TOP VIEW
(Not to Scale)
IN
NC
V
OUT
GND
NC
NC = NO CONNECT
Figure 2. 8-Lead TSSOP (RU-8)
GENERAL DESCRIPTION
The ADR293 is a low noise, micropower precision voltage
reference that utilizes an XFET® (eXtra implanted junction FET)
reference circuit. The XFET architecture offers significant
performance improvements over traditional band gap and
buried Zener-based references. Improvements include one
quarter the voltage noise output of band gap references
operating at the same current, very low and ultralinear
temperature drift, low thermal hysteresis, and excellent long-
term stability.
15 ppm/°C, and 25 ppm/°C maximum. Line regulation and load
regulation are typically 30 ppm/V and 30 ppm/mA, respectively,
maintaining the reference’s overall high performance.
The ADR293 is specified over the extended industrial
temperature range of –40°C to +125°C. This device is available
in the 8-lead SOIC and 8-lead TSSOP packages.
Table 1. ADR29x Products
Temperature
Coefficient
Output
Initial
The ADR293 is a series voltage reference providing stable and
accurate output voltage from a 6.0 V supply. Quiescent current
is only 15 μA maximum, making this device ideal for battery
powered instrumentation. Three electrical grades are available
offering initial output accuracy of 3 mV, 6 mV, and 10 mV.
Temperature coefficients for the three grades are 8 ppm/°C,
Device
ADR291
ADR292
ADR293
Voltage (V)
Accuracy (%)
(ppm/°C max)
2.500
4.096
5.000
0.08, 0.12, 0.24 8, 15, 25
0.07, 0.10, 0.15 8, 15, 25
0.06, 0.12, 0.20 8, 15, 25
Rev. D
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