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| Dual Digitally Controlled Potentiometer (XDCP™); Low Noise, Low Power, SPIŽ Bus, 128 Taps |
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| Ordering Information |
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 iBuy direct from Intersil
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 iBuy direct - out of stock
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 Request samples
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 Check distributor inventory
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Available in RoHS/Pb-Free
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Part No. |
Design-In
Status |
Temp. |
Package |
MSL |
Price
US $ |
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| ISL22426UFR16Z |
Active |
Full-Range Ind |
16 Ld QFN |
1 |
1.56 |
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| ISL22426UFR16Z-TK |
Active |
Full-Range Ind |
16 Ld QFN T+R |
1 |
1.56 |
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| ISL22426UFV14Z |
Active |
Full-Range Ind |
14 Ld TSSOP |
1 |
1.56 |
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| ISL22426UFV14Z-TK |
Active |
Full-Range Ind |
14 Ld TSSOP T+R |
1 |
1.56 |
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| ISL22426WFR16Z |
Active |
Full-Range Ind |
16 Ld QFN |
1 |
1.56 |
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| ISL22426WFR16Z-TK |
Active |
Full-Range Ind |
16 Ld QFN T+R |
1 |
1.56 |
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| ISL22426WFV14Z |
Active |
Full-Range Ind |
14 Ld TSSOP |
1 |
1.56 |
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| ISL22426WFV14Z-TK |
Active |
Full-Range Ind |
14 Ld TSSOP T+R |
1 |
1.56 |
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| The price listed is the manufacturer's suggested retail price for quantities of 1K units. However, prices in today's market are fluid and may change without notice. |
| MSL = Moisture Sensitivity Level - per IPC/JEDEC J-STD-020 |
| SMD = Standard Microcircuit Drawing |
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 Description |
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The ISL22426 integrates two digitally controlled potentiometers (DCP) and non-volatile memory on a monolithic CMOS integrated circuit.
The digitally controlled potentiometers are implemented with a combination of resistor elements and CMOS switches. The position of the wipers are controlled by the user through the SPI serial interface. Each potentiometer has an associated volatile Wiper Register (WR) and a non-volatile Initial Value Register (IVR) that can be directly written to and read by the user. The contents of the WR controls the position of the wiper. At power-up, the device recalls the contents of the DCP's IVR to the corresponding WR.
The DCPs can be used as three-terminal potentiometers or as two-terminal variable resistors in a wide variety of applications including control, parameter adjustments, and signal processing. |
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 Key Features |
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Two potentiometers in one package
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128 resistor taps
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SPI serial interface
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Non-volatile storage of wiper position
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Wiper resistance: 70Ω typical @ VCC = 3.3V
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Shutdown mode
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Shutdown current 5μA max
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Power supply: 2.7V to 5.5V
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50kΩ or 10kΩ total resistance
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High reliability
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Endurance: 1,000,000 data changes per bit per register
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Register data retention: 50 years @ T ≤ +55°C
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14 Ld TSSOP and 16 Ld QFN package
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Pb-free (RoHS compliant)
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| Related Documentation |
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 Application Note(s): |
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 Datasheet(s): |
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 Technical Brief(s): |
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 Technical Homepage: |
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 Parametric Data |
| | # of Devices/ Channels | | 2 | | | # of Taps | | 128 | | | Memory Type | | Non-Volatile | | | Bus Interface Type | | SPI | | | Resistance Options (kΩ) | | 10, 50 | | | VCC Range (V) | | 2.7 to 5.5 | | | VCC (min) (V) | | 2.7 | | | VCC (max) (V) | | 5.5 | | | DCP Dual Supply Range (V) | | N/A | | | DCP Single Supply Range (V) | | 0 to 5.5 | | | Resistance Taper | | Linear | | | Wiper Current (mA) | | 3 | | | Wiper Resistance (Ω) | | 70 | | | Supply Current (μA) | | 5 | | | Max Operating Temp (°C) | | 125 | | | End-to-End Tempco (ppm/°C) | | 50 | | | Middlepoint Ratiometric Tempco (ppm/°C) | | 4 | | | VL min. terminal voltage (V) | | 0 | | | VH max. terminal voltage (V) | | 5.5 | | | Features | | Shutdown feature & 5 Bytes General Purpose EEPROM | |
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 Application Block Diagrams |
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| | ISL22326 | | Dual Digitally Controlled Potentiometers (XDCP™); Low Noise, Low Power, I<sup>2</sup>C™ Bus, 128 Taps | | | ISL22329 | | Dual Digitally Controlled Potentiometers (XDCP™); Low Noise, Low Power, I2C™ Bus, 128 Taps, Wiper Only | | | ISL22429 | | Dual Digitally Controlled Potentiometer (XDCP™); Low Noise, Low Power, SPIŽ Bus, 128 Taps, Wiper Only | |
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