Analog Digital Potentiometers Integrated Circuit IC AD5204BRUZ10 AD5206BRUZ10

AD5204BRUZ10 AD5206BRUZ10 Analog Devices Digital Potentiometers Integrated Circuit IC

AD5204AD5206 Analog Devices Digital Potentiometers Integrated circuit IC

AD5204BRUZ10 AD5206BRUZ10-4-/6-Channel Digital Potentiometers
 

 
Applications:
Mechanical potentiometer replacement
Instrumentation: gain, offset adjustment
Programmable voltage-to-current conversion
Programmable filters, delays, time constants
Line impedance matching

Features:

► 256 positions
► Multiple independently programmable channels
► AD5204—4-channel
► AD5206—6-channel
► Potentiometer replacement
► Terminal resistance of 10 kΩ, 50 kΩ, 100 kΩ
► 3-wire SPI-compatible serial data input
► +2.7 V to +5.5 V single-supply operation; ±2.7 V dual-supply operation
► Power-on midscale preset

 
Analog Devices Digital Potentiometers Integrated circuit IC Specification :AD5206BRUZ10

 
Description:
 The AD5204/AD5206 provide 4-/6-channel, 256-position digitally controlled variable resistor (VR) devices. These devices perform the same electronic adjustment function as a potentiometer or variable resistor.
Each channel of the AD5204/AD5206 contains a fixed resistor with a wiper contact that taps the fixed resistor value at a
point determined by a digital code loaded into the SPI-compatible serial-input register. The resistance between the wiper and either endpoint of the fixed resistor varies linearly with respect to the digital code transferred into the VR latch. The variable resistor offers a completely programmable value of resistance between the
A terminal and the wiper or the B terminal and the wiper.
The fixed A-to-B terminal resistance of 10 kΩ, 50 kΩ, or 100 kΩ has a nominal temperature coefficient of 700 ppm/°C.
Each VR has its own VR latch that holds its programmed resistance value.
These VR latches are updated from an internal serial-to-parallel shift register that is loaded from a standard 3-wire serial-input digital interface. Eleven data bits make up the data-word clocked into the serial input register.
The first three bits are decoded to determine which VR latch is loaded with the last eight bits of the
data-word when the CS strobe is returned to logic high.
A serial data output pin at the opposite end of the serial register (AD5204 only) allows simple daisy chaining in multiple VR applications without requiring additional external decoding logic.
An optional reset (PR) pin forces all the AD5204 wipers to the midscale position by loading 0x80 into the VR latch.

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