1.0 V Precision Low Noise
Shunt Voltage Reference
ADR510
FEATURES
PIN CONFIGURATION
3-Lead SOT-23
Precision 1.000 V Voltage Reference
Ultracompact 3 mm ꢀ 3 mm SOT-23 Package
No External Capacitor Required
Low Output Noise: 4 ꢁV p-p (0.1 Hz to 10 Hz)
Initial Accuracy: ꢂ0.35% Max
Temperature Coefficient: 70 ppm/ꢃC Max
Operating Current Range: 100 ꢁA to 10 mA
Output Impedance: 0.3 ꢄ Max
ADR510
+
V
1
2
3
TRIM/NC
–
V
Temperature Range: –40ꢃC to +85ꢃC
ADR510
Output Initial
APPLICATIONS
Temperature
Coefficient
Precision Data Acquisition Systems
Battery-Powered Equipment:
Cellular Phone, Notebook Computer, PDA,
and GPS
Voltage Accuracy
(VO)
Model
ADR510ART-REEL7 1.000
(mV) (%) (ppm/ꢃC)
3.5 0.35 70
3 V/5 V, 8-/12-Bit Data Converters
Portable Medical Instruments
Industrial Process Control Systems
Precision Instruments
GENERAL DESCRIPTION
A TRIM terminal is available on the ADR510 to provide adjust-
ment of the output voltage over Ϯ0.5% without affecting the
temperature coefficient of the device. This feature provides
users with the flexibility to trim out any system errors.
Designed for space critical applications, the ADR510 is a low
voltage (1.000 V), precision shunt-mode voltage reference in the
ultracompact (3 mm ϫ 3 mm) SOT-23 package. The ADR510
features low temperature drift (70 ppm/ЊC), high accuracy
(Ϯ0.35%), and ultralow noise (4 V p-p) performance.
The ADR510’s advanced design eliminates the need for an
external capacitor, yet it is stable with any capacitive load. The
minimum operating current increases from a scant 100 A to a
maximum of 10 mA. This low operating current and ease of
use make the ADR510 ideally suited for hand-held battery-
powered applications.
V
S
R
I
+ I
Q
BIAS
L
I
L
V
= 1.0V
OUT
I
ADR510
Q
C
OUT
(OPTIONAL)
V
– V
OUT
S
R
=
BIAS
I
+ I
L
Q
Figure 1. Typical Operating Circuit
REV. 0
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