器件名称: AD5260BRU50
功能描述: 1-/2-Channel 15 V Digital Potentiometers
文件大小: 859.84KB 共20页
简 介:a
FEATURES 256 Positions AD5260 – 1-Channel AD5262 – 2-Channel (Independently Programmable) Potentiometer Replacement 20 k, 50 k , 200 k Low Temperature Coefficient 35 ppm/C 4-Wire SPI-Compatible Serial Data Input 5 V to 15 V Single-Supply; 5.5 V Dual-Supply Operation Power ON Mid-Scale Preset APPLICATIONS Mechanical Potentiometer Replacement Instrumentation: Gain, Offset Adjustment Stereo Channel Audio Level Control Programmable Voltage to Current Conversion Programmable Filters, Delays, Time Constants Line Impedance Matching Low Resolution DAC Replacement GENERAL DESCRIPTION
1-/2-Channel 15 V Digital Potentiometers AD5260/AD5262
FUNCTIONAL BLOCK DIAGRAMS
A W B SHDN VDD VSS VL CS LOGIC 8 CLK SDI GND SERIAL INPUT REGISTER SDO
AD5260
RDAC REGISTER
POWER-ON RESET
PR
A1
W1 B1
A2
W2 B2
SHDN
PERCENT OF NOMINAL END-TO-END RESISTANCE – % RAB
The AD5260/AD5262 provide a single- or dual-channel, 256position, digitally controlled variable resistor (VR) device.* These devices perform the same electronic adjustment function as a potentiometer or variable resistor. Each channel of the AD5260/ AD5262 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 end point of the fixed resistor varies linearly with respect to the digital code transferred into the VR latch. The variable resistor offers a completely programmabl……
