AD7376_15 Datasheet, PDF (1/20 Pages) Analog Devices – 30 V/15 V Operation 128-Position Digital Potentiometer

FEATURES
128 positions
10 kΩ, 50 kΩ, 100 kΩ
20 V to 30 V single-supply operation
±10 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
APPLICATIONS
High voltage DAC
Programmable power supply
Programmable gain and offset adjustment
Programmable filters, delays
Actuator control
Audio volume control
Mechanical potentiometer replacement
+30 V/±15 V Operation
128-Position Digital Potentiometer
AD7376
FUNCTIONAL BLOCK DIAGRAM
AD7376
V_DD
SDO
Q
A
7-BIT
7
SERIAL
REGISTER
7-BIT
7
LATCH
W
SDI
CLK
CS
D
CK
B
SHDN
R
V_SS
GND
RS
SHDN
Figure 1.
GENERAL DESCRIPTION
The AD7376¹ is one of the few high voltage, high performance
digital potentiometers² on the market. 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, the AD7376 provides layout
flexibility and allows closed-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. D
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