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AD5260/AD5262,pdf datasheet (1
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格式:rar |
大小:517 |
2009-09-22
张静
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The AD5260/AD5262 provide a single- or dual-channel, 256-
position, 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 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 20 kW, 50 kW, or 200 kW has
a nominal temperature coefficient of 35 ppm/∞C. Unlike the majority
of the digital potentiometers in the market, these devices can operate
up to 15 V or ±5 V provided proper supply voltages are furnished.
position, 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 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 20 kW, 50 kW, or 200 kW has
a nominal temperature coefficient of 35 ppm/∞C. Unlike the majority
of the digital potentiometers in the market, these devices can operate
up to 15 V or ±5 V provided proper supply voltages are furnished.
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