+30 V/± ±1 V ꢀOperatio
±28-Pistatio Dtgtarl Piapoatimpape
AD7376
FUNCTIONAL BLOCK DIAGRAM
FEATURES
128 positions
10 kΩ, 50 kΩ, 100 kΩ
5 V to 30 V single-supply operation
5 V to 15 V dual-supply operation
3-wire SPI®-compatible serial interface
THD 0.006% typical
Programmable preset
Power shutdown: less than 1 μA
iCMOS™ process technology
V
AD7376
DD
SDO
SDI
Q
A
7-BIT
7
7
7-BIT
SERIAL
LATCH
REGISTER
W
B
D
CK
SHDN
R
CLK
CS
V
SS
APPLICATIONS
High voltage DAC
GND
RS
SHDN
Programmable power supply
Programmable gain and offset adjustment
Programmable filters, delays
Actuator control
Figure 1.
Audio volume control
Mechanical potentiometer replacement
GENERAL DESCRIPTION
The AD73761 is one of the few high voltage, high performance
digital potentiometers2 in the market at present. This device can
be used as a programmable resistor or resistor divider. The
AD7376 performs the same electronic adjustment function as
mechanical potentiometers, variable resistors, and trimmers
with enhanced resolution, solid-state reliability, and
programmability. With digital rather than manual control,
AD7376 provides layout flexibility and allows close-loop
dynamic controllability.
The AD7376 features sleep-mode programmability in shutdown
that can be used to program the preset before device activation,
thus providing an alternative to costly EEPROM solutions.
The AD7376 is available in 14-lead TSSOP and 16-lead wide
body SOIC packages in 10 kΩ, 50 kΩ, and 100 kΩ options. All
parts are guaranteed to operate over the −40°C to +85°C
extended industrial temperature range.
1 Patent number: 54952455.
2 The terms digital potentiometer and RDAC are used interchangeably.
Rev. A
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