ADN2850:  Dual 10-Bit Programmable Non-Volatile Resistor

The ADN2850 is a very low tempco, digitally controlled non-volatile resistor that facilitates assembly by replacing discrete resistors currently used to set laser diode driver parameters in fiber ...More

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ADN2850:  Dual 10-Bit Programmable Non-Volatile Resistor

Product Description

The ADN2850 is a very low tempco, digitally controlled non-volatile resistor that facilitates assembly by replacing discrete resistors currently used to set laser diode driver parameters in fiber optic transmitter modules. The ADN2850's versatile programming via a Micro Controller allows multiple modes of operation and adjustment.

The ADN2850 can be used in all SONET, SDH, ATM and Gigabit Ethernet laser diode driver applications. This device can also be programmed for TEC controller calibration, APD calibration and optical power monitoring.

The ADN2850 operates from either a single power supply from +3 V to +5 V, or a ±2.5 V dual supply. It is available in 5mm x 5mm LFCSP-16 Lead Frame Chip Scale and thin TSSOP-16 packages.

Features

  • 10-bit Resolution
  • 25 Ω, 250 Ω Terminal Resistance
  • Programmable Laser Calibration
  • 3 V to 5 V Single, ±2.5 V Dual Supply Operation
  • Nonvolatile memory for set-point storage and additional factory data

Diagrams

ADN2850 Diagram
Functional Block Diagram for ADN2850

Specifications

# Channels 2
# Positions 1024
Memory Type Non-Volatile
Interface SPI
Resistor Values (kOhms) 25, 250
Bipolar Voltage Range (V) ±3V
Voltage Range (V) +5.5V
Supply Current (max) 3.5µA
Temp. Range -40 °C to.. 85Deg
Absolute Tempco (ppm/°C) 35ppm/C
Package LFCSP

Explore Other Products

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ADN2860 3 512 Non-Volatile I2C 25, 250 ±2.75 - 10µA 85 15 $5.97
AD5228 1 32 Volatile Pushbutton 10, 50, 100 - +5.5 0.4µA 105 35 $0.34
AD5201 1 33 Volatile SPI 10, 50 ±3 +5.5 15µA 85 500 $0.50
AD5227 1 64 Volatile Up/Down 10, 50, 100 - +5.5 0.4µA 105 35 $0.36
AD5246 1 128 Volatile I2C 5, 10, 50, 100 - +5.5 3µA 125 35 $0.45
AD5247 1 128 Volatile I2C 5, 10, 50, 100 - +5.5 3µA 125 35 $0.45
AD5220 1 128 Volatile Up/Down 10, 50, 100 - +5.5 15µA 85 800 $0.90
AD7376 1 128 Volatile SPI 10, 50, 100, 1M ±15 +28 10µA 85 35 $2.86
AD5160 1 256 Volatile SPI 5, 10, 50, 100 - +5.5 3µA 125 35 $0.64
AD5165 1 256 Volatile SPI 100 - +5.5 0.05µA 125 35 $0.58
AD5245 1 256 Volatile I2C 5, 10, 50, 100 - +5.5 3µA 125 35 $0.64
AD5161 1 256 Volatile I2C, SPI 5, 10, 50, 100 - +5.5 3µA 125 35 $0.65
AD5241 1 256 Volatile I2C 10, 100, 1M ±3 +5.5 0.1µA 105 30 $0.93
AD5200 1 256 Volatile SPI 10, 50 ±3 +5.5 15µA 85 500 $0.89
AD8400 1 256 Volatile SPI 1, 10, 50, 100 - +5.5 0.01µA 125 500 $1.13