ISL90461

Single Volatile 32-Tap Digitally Controlled Potentiometer (XDCP™)

Product Status: Mass Production

OVERVIEW

The Intersil ISL90461 is a digitally controlled potentiometer (XDCP). Configured as a variable resistor, the device consists of a resistor array, wiper switches, a control section, and volatile memory. The wiper position is controlled by a 2- pin Up /Down interface.

The potentiometer is implemented by a resistor array composed of 31 resistive elements and a wiper switching network. Between each element and at either end are tap points accessible to the wiper terminal. The position of the wiper element is controlled by the CS and U/D inputs. The device can be used in a wide variety of applications including:
  • LCD contrast control
  • Parameter and bias adjustments
  • Industrial and Automotive Control
  • Transducer adjustment of pressure, temperature, position, chemical, and optical sensors
  • Laser Diode driver biasing
  • Gain control and offset adjustment

KEY FEATURES

  • Volatile solid-state potentiometer
  • 2-pin UP/DN interface
  • DCP terminal voltage, 2.7V to 5.5V
  • Tempco 35 ppm/°C typical
  • 32 wiper tap points
  • Low power CMOS
  • Active current, 25µA max.
  • Supply current 0.3µA
  • Available RTOTAL values = 10kΩ, 50kΩ, 100kΩ
  • Temperature Range -40°C to +85°C
  • Packages
  • 6 Ld SC-70, SOT-23
  • Pb-Free Plus Anneal Available (RoHS Compliant)

BLOCK DIAGRAM

 Block Diagram

PARAMETRICS

Parameters
ISL90461
Basic Information
Production Status
Mass Production
# of Devices/ Channels
1
# of Taps
32
Memory Type
Volatile
Bus/Output Interface
2-Pin (Up/Down)
Resistance Options (kΩ)
10, 50, 100
Supply Voltage Vcc (Min) (V)
2.7
Supply Voltage Vcc (Max) (V)
5.5
Supply Current Icc
0.3 µA
Resistance Taper
Linear
VL Min. Terminal Voltage
0 V
VL Max. Terminal Voltage
5.5 V
Wiper Current (mA)
0.6
Wiper Resistance (Ω)
600
Dual Supply Range (V)
N/A
Max Operating Temperature
85 °C
End-to-End Temperature Coefficient (ppm/øC)
35
Features
Rheostat with pined our RH and RL
Qualification Level
Standard
Single Supply Range (V)
0 to 5.5
Supply Voltage Vcc Range (V)
2.7 to 5.5
Can Sample
YES
Temperature Range
-40 to +85

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