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DS3902U-515 Datasheet(PDF) 1 Page - Maxim Integrated Products |
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DS3902U-515 Datasheet(HTML) 1 Page - Maxim Integrated Products |
1 / 11 page General Description The DS3902 features a dual, nonvolatile (NV), low tem- perature-coefficient, variable digital resistor with 256 user-selectable positions. The DS3902 can operate over a wide supply range of 2.4V to 5.5V, and commu- nication with the device is achieved through an I2C™- compatible serial interface. Internal address settings allow the DS3902 slave address to be programmed to one of 128 possible addresses. The low cost and the small size of the DS3902 make it an ideal replacement for conventional mechanical-trimming resistors. Applications Optical Transceivers Optical Transponders Instrumentation and Industrial Controls RF Power Amps Audio Power-Amp Biasing Replacement for Mechanical Variable Resistors and DIP Switches Features ♦ Dual 256-Position Linear Digital Resistors ♦ Available as 50kΩ/30kΩ or 50kΩ/15kΩ ♦ Resistor Settings Stored in NV Memory ♦ Low Temperature Coefficient ♦ I2C-Compatible Serial Interface ♦ Wide Operating Voltage (2.4V to 5.5V) ♦ Software Write Protection ♦ User-EEPROM Memory ♦ Programmable Slave Address ♦ Operating Temperature Range: -40°C to +95°C ♦ Small 8-Pin µSOP Package Dual, NV, Variable Resistors with User EEPROM ______________________________________________ Maxim Integrated Products 1 SCL SDA ADD_SEL1 GND 2-WIRE MASTER 4.7k Ω 4.7k Ω 0.1 µF H1 H0 VCC VCC VCC VCC OUT- OUT+ BIAS+ BIAS- MD IN+ IN- TX_FAULT TX_DISABLE BIASMAX2 APCSET2 MODSET2 PC_MON BS_MON BIAS SET MOD SET NOTES: 1. WITH ADD_SEL TIED TO GND, THE SLAVE ADDRESS WILL BE A2H. 2. FOR A DETAILED APPLICATION DIAGRAM OF A SPECIFIC LD, CONSULT THE LASER DRIVER DATA SHEET. LASER DRIVER IC DS3902 Typical Operating Circuit Rev 0; 5/04 For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. *Add /T&R for Tape & Reel orders. Ordering Information Pin Configuration appears at end of data sheet. PART RESISTOR VALUES (R0, R1) TOP BRAND PIN- PACKAGE DS3902U-530 30k Ω, 50kΩ 3902A 8 µSOP DS3902U-515 15k Ω, 50kΩ 3902B 8 µSOP I2C is a trademark of Philips Corp. Purchase of I2C components of Maxim Integrated Products, Inc., or one of its Associated Companies, conveys a license under the Philips I2C Patent Rights to use these components in an I2C system, provided that the sys- tem conforms to the I2C Standard Specification as defined by Philips. |
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