Datasheet Analog Devices AD5235 — Ficha de datos

FEATURES
Dual-channel, 1024-position resolution
25 kΩ, 250 kΩ nominal resistance
Maximum ±8% nominal resistor tolerance error
Low temperature coefficient: 35 ppm/°C
2.7 V to 5 V single supply or ±2.5 V dual supply
SPI-compatible serial interface
Nonvolatile memory stores wiper settings
Power-on refreshed with EEMEM settings
Permanent memory write protection
Resistance tolerance stored in EEMEM
26 bytes extra nonvolatile memory for user-defined
information
1M programming cycles
100-year typical data retention APPLICATIONS
DWDM laser diode driver, optical supervisory systems
Mechanical potentiometer replacement
Instrumentation: gain, offset adjustment
Programmable voltage-to-current conversion
Programmable filters, delays, time constants
Programmable power supply
Low resolution DAC replacement
Sensor calibration GENERAL DESCRIPTION …

Nonvolatile Memory, Dual
1024-Position Digital Potentiometer
AD5235-EP Enhanced Product
FEATURES FUNCTIONAL BLOCK DIAGRAM APPLICATIONS
DWDM laser diode driver, optical supervisory systems
Mechanical potentiometer replacement
Instrumentation: gain, offset adjustment
Programmable voltage-to-current conversion
Programmable filters, delays, time constants
Programmable power supply
Low resolution DAC replacement
Sensor calibration GENERAL DESCRIPTION
The AD5235-EP is a dual-channel, nonvolatile memory,1
digitally controlled potentiometer2 with 1024-step resolution.
The device performs the same electronic adjustment function as a
mechanical potentiometer with enhanced resolution, solid state
reliability, and superior low temperature coefficient performance.
The AD5235-EP's versatile programming via an SPI®-compatible
serial interface allows 16 modes of operation and adjustment
including scratchpad programming, memory storing and restoring,
increment/decrement, ±6 dB/step log taper adjustment, wiper setting
readback, and extra EEMEM1 for user-defined information such as
memory data for other components, look-up tables, or system …