AD8403ARZ1 - ADI

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

AD8403ARZ1
Manufacturer

ADI
ChipWorker Part#

CW962425
Category

Digital Potentiometer IC
Package

SOIC-24
Description

Digital Potentiometer 1KΩ 256POS Volatile Linear 24Pin SOIC W Tube
Documentation

Datasheet

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AD8403ARZ1 Specifications

Attribute	Attribute Value

Part Number	AD8403ARZ1
Manufacturer	ADI
ChipWorker Part#	CW962425
Category	Digital Potentiometer IC
Documentation	Datasheet
Mounting Style	Surface Mount
Number of Pins	24 Pin
Case/Package	SOIC-24
Supply Voltage (DC)	2.70V (min)
Capacitance Tolerance	±33 %
Supply Current	0.9 mA
Number of Circuits	4 Circuit
Number of Positions	24 Position
Resistance	1 kΩ
Resistance Tolerance	±1 %
Quiescent Current	10.0 nA
Operating Temperature (Max)	125 ℃
Operating Temperature (Min)	-40 ℃
Supply Voltage	2.7V ~ 5.5V
Supply Voltage (Max)	5.5 V
Supply Voltage (Min)	2.7 V
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Size-Length	15.6 mm
Size-Width	7.6 mm
Size-Height	2.35 mm
Operating Temperature	-40℃ ~ 125℃
Temperature Coefficient	±500 ppm/℃
Product Lifecycle Status	Active
Packaging	Tube
RoHS	RoHS Compliant
Lead-Free Status	Lead Free
REACH SVHC Compliance Edition	2015/12/17
ECCN Code	EAR99

Product Description

Product Details
The AD8400/AD8402/AD8403 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 AD8402 contains two independent variable resistors in 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 kΩ, 10 kΩ, 50 kΩ or 100 kΩ 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-before-make operation.
Each VR 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.
### Features and Benefits
256-Position
Replaces 1,2 or 4 Potentiometers
1 kΩ, 10 kΩ, 50 kΩ, 100 kΩ Available Options
Power Shutdown - Less than 5 µA
3-Wire SPI-Compatible Serial Data Input
10 MHz Update Data Loading Rate
2.7 V to 5.5 V Single-Supply Operation
Midscale Preset

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