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X9400

Renesas
Part Number X9400
Manufacturer Renesas
Description Quad Digitally Potentiometer
Published Jun 3, 2020
Detailed Description DATASHEET X9400 Low Noise/Low Power/SPI Bus Quad Digitally Controlled Potentiometers (XDCP™) FN8189 Rev 4.00 September...
Datasheet PDF File X9400 PDF File

X9400
X9400

Overview
DATASHEET X9400 Low Noise/Low Power/SPI Bus Quad Digitally Controlled Potentiometers (XDCP™) FN8189 Rev 4.
00 September 2, 2015 FEATURES • Four potentiometers per package • 64 resistor taps • SPI serial interface for write, read, and transfer operations of the potentiometer • Wiper resistance, 40 typical at 5V.
• Four non-volatile data registers for each potentiometer • Non-volatile storage of multiple wiper position • Power-on recall.
Loads saved wiper position on power-up.
• Standby current < 1µA max • • System Analog VV+C/VC:–:2-.
57VV to to 5.
5V +5V operation • 10k, 2.
5k end to end resistance • 100 yr.
data retention • Endurance: 100,000 data changes per bit per register • Low power CMOS • 24 Ld SOIC and 24 Ld TSSOP • Pb-free plus anneal available (RoHS compliant) DESCRIPTION The X9400 integrates four digitally controlled potentiometers (XDCPs) on a monolithic CMOS integrated circuit.
The digitally controlled potentiometer is implemented using 63 resistive elements in a series array.
Between each element are tap points connected to the wiper terminal through switches.
The position of the wiper on the array is controlled by the user through the SPI serial bus interface.
Each potentiometer has associated with it a volatile Wiper Counter Register (WCR) and four nonvolatile Data Registers (DR0-3) that can be directly written to and read by the user.
The contents of the WCR controls the position of the wiper on the resistor array through the switches.
Power-up recalls the contents of DR0 to the WCR.
The XDCP can be used as a three-terminal potentiometer or as a two-terminal variable resistor in a wide variety of applications including control, parameter adjustments, and signal processing.
BLOCK DIAGRAM VCC VSS V+ V- HOLD CS SCK SO SI A0 A1 WP Interface and Control Circuitry 8 Data R0 R1 R2 R3 Pot 0 Wiper Counter Register (WCR) VH0/RH0 VL0/RL0 VW0/RW0 R0 R1 R2 R3 Wiper Counter Register (WCR) Resistor Array Pot 2 VH2/RH2 VL2/RL2 ...


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