AD5252B1

Product Summary

The AD5252B1 is a dual-channel, I2C, nonvolatile memory, digitally controlled potentiometers with 64/256 positions, respectively. The AD5252B1 performs the same electronic adjustment functions as mechanical potentiometers, trimmers, and variable resistors. The applications of the AD5252B1 are Mechanical potentiometer replacement, General purpose DAC replacement, LCD panel VCOM adjustment, White LED brightness adjustment, RF base station power amp bias control, Programmable gain and offset control, Programmable voltage-to-current conversion, Programmable power supply, Sensor calibrations.

Parametrics

AD5252B1 absolute maximum ratings: (1)VDD to GND:-0.3 V, +7 V ; (2)VSS to GND:+0.3 V, -7 V ; (3)VDD to VSS: 7 V ; (4)VA, VB, VW to GND:VSS, VDD ; (5)IWB, IWA Pulsed:±20 mA ; (6)IWB Continuous (RWB ≤ 1 kΩ, A Open):±5 mA ; (7)IWA Continuous (RWA ≤ 1 kΩ, B Open):±5 mA ; (8)Digital Inputs and Output Voltage to GND:0 V, 7 V ; (9)Operating Temperature Range:-40℃ to +85℃ ; (10)Maximum Junction Temperature:150℃ ; (11)Storage Temperature:-65℃ to +150℃ ; (12)Lead Temperature (Soldering,10 sec):300℃ ; (13)Vapor Phase (60 sec):215℃ ; (14)Infrared (15 sec):220℃ ; (15)TSSOP-14 Thermal Resistance:136℃/W.

Features

AD5252B1 features: (1)1 kΩ, 10 kΩ, 50 kΩ, 100 kΩ; (2)Nonvolatile memory1 stores wiper setting w/write protection; (3)Power-on refreshed with EEMEM settings in 300 μs typ; (4)EEMEM rewrite time = 540 μs typ; (5)Resistance tolerance stored in nonvolatile memory; (6)12 extra bytes in EEMEM for user-defined information; (7)I2C compatible serial interface; (8)Direct read/write access of RDAC2 and EEMEM registers; (9)Predefined linear increment/decrement commands; (10)Predefined ±6 dB step change commands; (11)Synchronous or aysynchronous dual channel update; (12)Wiper setting read back; (13)4 MHz bandwidth—1 kΩ version; (14)Single supply 2.7 V to 5.5 V; (15)Dual supply ±2.25 V to ±2.75 V; (16)2 slave address decoding bits allow operation of 4 devices; (17)100-year typical data retention TA = 55℃; (18)Operating temperature –40℃ to +85℃.

Diagrams