REV. A
ADR370
*
Precision Low Power 2.048 V
SOT-23 Voltage Reference
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*Protected by U.S.Patent No. 5,969,657; other patents pending.
PIN CONFIGURATION
3-Lead SOT-23
1
3
2
V
IN
V
OUT
ADR370 GND
Table I. ADR370 Products
Output Initial Temperature
Voltage Accuracy Coefficent
Products (V
O
)

(mV)

(%) (ppm/°C)
ADR370BRT-REEL7 2.048 4 0.2 50
ADR370ART-REEL7 2.048 10 0.5 100
FEATURES
Initial Accuracy: H115504 mV Max
Initial Accuracy Error: H115500.2%
Low TCVO: H1155050 ppm/H11543C Max from –40H11543C to +125H11543C,
30 ppm/H11543C Max from +25H11543C to +70H11543C
Load Regulation: 200 H9262V/mA, 100 ppm/mA
Line Regulation: 25 H9262V/V, 20 ppm/V
Wide Operating Range: V
IN
= 2.3 V to 15 V
Low Power: 72 H9262A Max
High Output Sink/Source Current: H115505 mA Min
Wide Temperature Range: –40H11543C to +125H11543C
Tiny 3-Lead SOT-23 Package with Standard Pinout
APPLICATIONS
Battery-Powered Instrumentation
Portable Medical Instruments
Data Acquisition Systems
Industrial Process Control Systems
Automotive
GENERAL DESCRIPTION
The ADR370 is a low cost, 3-terminal (series) band-gap voltage
reference featuring high accuracy, high stability, and low power
consumption packaged in a tiny 3-lead SOT-23 package. Precise
matching and thermal tracking of on-chip components, as well as
patented temperature drift curvature correction design techniques,
have been employed to ensure that the ADR370 provides an
accurate 2.048 V output.
This micropowered, low dropout voltage device will source or
sink up to 5 mA of load current while providing a stable 2.048 V
output. The compact footprint, high accuracy, and an operating
range of 2.3 V to 12 V make the ADR370 ideal for use in 3 V
and 5 V systems where there may be wide variations in supply
voltage and a need to minimize power dissipation.
The ADR370 is offered in A and B grades; all devices are specified
over the extended industrial range of –40°C to +125°C.