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CAT5132

Features: `Single linear Digitally Programmable Potentiometer`128 Resistor taps`End-to-end resistance of 10k, 50k & 100k`Potentiometer control and memory access via 2-wire interface (I2C-like)`Nonvolatile memory storage for wiper settings`Automatic recall of saved wiper setting at power up`Spe...

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SeekIC No. : 004310689 Detail

CAT5132: Features: `Single linear Digitally Programmable Potentiometer`128 Resistor taps`End-to-end resistance of 10k, 50k & 100k`Potentiometer control and memory access via 2-wire interface (I2C-like)`N...

CAT5132 Data Sheet

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Part Number:
CAT5132
Supply Ability:
5000

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  • 1~5000
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  • Processing time
  • 15 Days
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Product Details

Description



Features:

`Single linear Digitally Programmable Potentiometer
`128 Resistor taps
`End-to-end resistance of 10k, 50k & 100k
`Potentiometer control and memory access via 2-wire interface (I2C-like)
`Nonvolatile memory storage for wiper settings
`Automatic recall of saved wiper setting at power up
`Special increment/decrement instruction mode for automatic trimming adjustments
`VCC operation from 2.7 V to 5.5 V
`V+ (Analog Voltage Supply) operation from +8 V to +15V
`Standby current less than 15 A
`100 year nonvolatile memory data retention
`10-pin MSOP package
`Operating temperature of -40°C to + 85°C




Application

· LCD screen adjustment
· Volume control
· Mechanical potentiometer replacement
· Gain adjustment
· Line impedance matching
· VCOM setting adjustments




Pinout

Connection Diagram




Specifications

Temperature Under Bias....................-55°C to +125°C
Storage Temperature ....................... -65°C to +150°C
Voltage on any SDA, SCL, A0 & A1 pins with respect
to Ground (1)(2) .............................. -2.0V to VCC + 2.0V
Voltage on RH, RL & RW Pins with respect
to Ground .................................... -2.0V to "V+" + 1.0V
VCC with respect to Ground ....................... -2.0V to 7.0V
V+ with respect to Ground ....................... -2.0V to 16.0V
Wiper Current (10 sec) .......................................... +6mA
Lead Soldering temperature (10 sec) .................+300°C
Notes: 1. This parameter is tested initially and after a design or process change that affects the parameter. 2. Absolute linearity is utilized to determine actual wiper voltage versus expected voltage as determined by wiper position when used as a potentiometer.






Description


The CAT5132 is a high voltage Digitally Programmable Potentiometer (DPP) with non-volatile wiper setting memory, operating like a mechanical potentiometer. The tap points between the 127 equal resistive elements are connected to the wiper output via CMOS switches. The switches are controlled by a 7-bit Wiper Control Register (WCR). The wiper setting can be stored in a 7-bit non-volatile Data Register (DR). The WCR is accessed via the I²C serial bus.

Upon power-up, the WCR is set to mid-scale (1000000). After CAT5132 power supply is stable, the contents of the DR are transferred to the WCR and the wiper is returned to the memorized setting.

The CAT5132 has two voltage supplies: VCC, the digital supply and V+, the analog supply. V+ can be much higher than VCC, allowing for 16V analog operations.

The CAT5132 can be used as a potentiometer or as a two-terminal variable resistor.






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