Table of Contents Section 1 – New and Featured Products

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® Signal Conditioning/Calibration and Control Products X9119 Single Digitally-Controlled (XDCP ) Potentiometer Product Highlights • Single Supply: • Low Power • 1024-tap • 2-Wire bus • Non-volatile Digital Potentiometer Key Features • 1024 Resistor Taps – 10-Bit Resolution • 2-Wire Serial Interface for write, read, and transfer operations of the potentiometer • Endurance: 100,000 Data Changes Per Bit Per Register • 14-Lead TSSOP, 15-Lead CSP (Chip Scale Package) • Low Power CMOS • Single Supply version of the X9118 Benefits • Digital Programmability • Set and Forget Calibration • Reliability • Dynamic Controls — Real time calibration — Adaptive response • Non-volatile storage and recall of wiper position • Power On Recall circuits • General purpose EEPROM Block Diagram Description The X9119 integrates a single digitally controlled potentiometer (XDCP) on a monolithic CMOS integrated circuit. The digital controlled potentiometer is implemented using 1023 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 2-wire bus interface. The potentiometer has associated with it a volatile Wiper Counter Register (WCR) and four non-volatile Data Registers 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 though the switches. Power-up recalls the contents of the default data register (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. Pin Configuration TSSOP NC A0 NC A2 SCL SDA V SS 1 2 3 4 5 6 7 14 13 12 X9119 11 10 9 8 V CC R L R H R W NC A1 WP New & Featured Products V CC R H 2-Wire Bus Interface Address Data Status Bus Interface & Control Write Read Transfer Control Power On Recall Wiper Counter Register (WCR) Data Registers (DR0-DR3) Wiper 100KW 1024-taps POT V SS NC NC R W R L * for ordering information refer to page 1-45 See Product Family Tree on page 2-1 www.xicor.com 1–27
® Signal Conditioning/Calibration and Control Products X9250 Quad Digitally Controlled Potentiometers (XDCP ) Product Highlights • Dual Supply: ± 5V Pot Operation • Low Noise • Low Power • SPI Bus • 256-Tap • Non-volatile Digital Potentiometer Key Features • Four potentiometers in one package • 256 resistor taps/pot–0.4% resolution • SPI serial interface • Wiper resistance, 40Ω typical @ V CC = 5V • High reliability — Endurance –100,000 data changes per bit per register — Register data retention–100 years • 24-lead SOIC, 24-lead TSSOP, 24-lead CSP (Chip Scale Package) • Dual supply version of X9251 Benefits • Digital Programmability • Set and Forget Calibration • Reliability • Dynamic Controls — Real time calibration — Adaptive response • Non-volatile storage and recall of wiper position • Power On Recall circuits • General purpose EEPROM Block Diagram V CC V SS V+ V- HOLD CS SCK SO SI A0 A1 WP Interface and Control Circuitry Data 8 R 0 R 1 Wiper R 2 R 3 (WCR) Counter Register Pot 0 R 0 R 1 Wiper Counter Resistor Register Array (WCR) Pot 1 R 2 R 3 Description The X9250 integrates 4 digitally controlled potentiometers (XDCP) on a monolithic CMOS integrated circuit. The digitally controlled potentiometer is implemented using 255 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 bus interface. Each potentiometer has associated with it a volatile Wiper Counter Register (WCR) and 4 non-volatile Data Registers (DR0:DR3) 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 though 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. Pin Configuration V H0 /R H0 V L0 /R L0 V W0 /R W0 V W1 /R W1 V H1 /R H1 V L1 /R L1 SOIC/TSSOP S0 A0 V W3 /R W3 V H3 /R H3 V L3 /R L3 V+ V CC V L0 /R L0 1 2 3 4 5 6 7 8 X9250 24 23 22 21 20 19 18 17 V H0 /R H0 V W0 /R W0 9 10 16 15 CS 11 14 WP 12 13 HOLD SCK V L2 /R L2 V H2 /R L2 V W2 /R W2 V– V SS V W1 /R W1 V H1 /R H1 V L1 /R L1 A1 SI R 0 R 1 Wiper V Resistor H2 /R H2 Counter Array Register Pot 2 (WCR) R 2 R 3 V L2 /R L2 V W2 /R W2 V W3 /R W3 R 0 R 1 Wiper V Resistor H3 /R H3 Counter Array Register Pot 3 (WCR) R 2 R 3 V L3 /R H3 * for ordering information refer to page 1-45 See Product Family Tree on page 2-1 1–28 www.xicor.com
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