AD8402AR10

Series: -
Resistance (Ohms): 10k
Memory Type: Volatile
Operating Temperature: -40°C ~ 125°C
Mounting Type: Surface Mount
Voltage - Supply: 2.7 V ~ 5.5 V
Packaging: Tube
Number of Circuits: 2
Interface: 3-Wire SPI (Chip Select)
Taps: 256
Package / Case: 14-SOIC (0.154", 3.90mm Width)
Manufacturer: Analog Devices Inc
Supplier Device Package: 14-SOICN
Temperature Coefficient: 500 ppm/°C Typical


Pinout




Description

The AD8402AR10 provide a single, dual or quad channel, 256 position digitally controlled variable resistor (VR) device. These devices perform the same electronic adjustment function as a potentiometer or variable resistor. The AD8400 contains a single variable resistor in the compact SO-8 package.The AD8402AR10 contains two independent variable resistors in space saving SO-14 surface mount package. The AD8403 contains four independent variable resistors in 24-lead PDIP, SOIC and TSSOP packages. Each part 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 controlling 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. Each 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 1 k, 10 k, 50 k or 100 k has a ±1% channel-to-channel matching tolerance with a nominal temperature coefficient of 500 ppm/°C. A unique switching circuit minimizes the high glitch inherent in traditional switched resistor designs avoiding any make-before-break or break-beforemake operation.

Each VR AD8402AR10 has its own VR latch that holds its programmed resistance value. These VR latches are updated from an SPI compatible serial-to-parallel shift register that is loaded from a standard 3-wire serial-input digital interface. Ten data bits make up the data word clocked into the serial input register. The data word is decoded where the first two bits determine the address of the VR latch to be loaded, the last eight bits are data. A serial data output pin at the opposite end of the serial register allows simple daisy-chaining in multiple VR applications without additional external decoding logic.

Parameters:

Technical/Catalog Information	AD8402AR10
Vendor	Analog Devices Inc
Category	Integrated Circuits (ICs)
Number of Circuits	2 - Dual
Resistance In Ohms	10K
Interface	SPI, 3-Wire Serial
Taps	256
Package / Case	14-SOIC (3.9mm Width), 14-SOL
Packaging	Tube
Voltage - Supply	2.7 V ~ 5.5 V
Memory Type	Volatile
Temperature Coefficient	500 ppm/°C Typical
Operating Temperature	-40°C ~ 125°C
Drawing Number	*
RoHS Status	RoHS Non-Compliant
Other Names	AD8402AR10 AD8402AR10