斯普仑科技AD5204BRU10现货热卖

FEATURES

256 Position

Multiple Independently Programmable Channels

AD5204—4-Channel

AD5206—6-Channel

Potentiometer Replacement

10 kV, 50 kV, 100 kV

3-Wire SPI-Compatible Serial Data Input

+2.7 V to +5.5 V Single Supply; 62.7 V Dual Supply

Operation

Power ON Midscale Preset

APPLICATIONS

Mechanical Potentiometer Replacement

Instrumentation: Gain, Offset Adjustment

Programmable Voltage-to-Current Conversion

Programmable Filters, Delays, Time Constants

Line Impedance Matching

GENERAL DESCRIPTION

The AD5204/AD5206 provides four-/six-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 which 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 will be

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

additional external decoding logic.

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深圳斯普仑科技有限公司

Shenzhen Spring Technology Co.,Ltd

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