Precision Low Drift SOT-23
Voltage Reference with Shutdown
ADR318
Rev. A
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FEATURES PIN CONFIGURATION
1
SHDN
5
GND
2
V
IN
3
V
OUT(SENSE) 4
V
OUT(FORCE)
ADR318
TOP VIEW
(Not to Scale)
03431-001
Initial accuracy: ±5 mV maximum, ±0.27% maximum
Low temperature coefficient: 25 ppm/°C maximum
Load regulation: 100 ppm/mA
Line regulation: 25 ppm/V
Low supply headroom: 0.6 V
Figure 1. 5-Lead SOT-23
Wide operating range: (VOUT + 0.6 V) to 15 V
Low power: 120 μA maximum
Shutdown to less than 3 μA maximum
Output current: 5 mA
Wide temperature range: 0°C to 70°C
Tiny 5-lead SOT-23 package
APPLICATIONS
Battery-powered instrumentation
Portable medical instruments
Data acquisition systems
Industrial process control systems
Fault protection critical systems
GENERAL DESCRIPTION
The ADR318 is a precision 1.8 V band gap voltage reference
featuring high accuracy, high stability, and low power
consumption in a tiny footprint. Patented temperature drift
curvature correction techniques minimize nonlinearity of the
voltage change with temperature. The wide operating range and
low power consumption with additional shutdown capability
make the part ideal for battery-powered applications. The
VOUT (SENSE) pin enables greater accuracy by supporting full
Kelvin operation in PCBs employing thin or long traces.
The ADR318 is a low dropout voltage (LDV) device that
provides a stable output voltage from supplies as low as 600 mV
above the output voltage. This device is specified over the
industrial operating range of 0°C to 70°C, and is available in a
tiny 5-lead SOT-23 package.
The combination of VOUT (SENSE) and shutdown functions also
enables a number of unique applications, combining precision
reference/regulation with fault decision and overcurrent
protection.
See the Applications section for details.