ADN2850BCP250 Analog Devices Inc, ADN2850BCP250 Datasheet - Page 2

• Manufacturer Part Number: ADN2850BCP250
• Description: IC DGTL RHEO DL 1024POS 16LFCSP
• Manufacturer: Analog Devices Inc

Specifications of ADN2850BCP250

• Taps: 1024
• Resistance (ohms): 250K
• Number Of Circuits: 2
• Temperature Coefficient: 35 ppm/°C Typical
• Memory Type: Non-Volatile
• Interface: 4-Wire SPI Serial
• Voltage - Supply: 3 V ~ 5.5 V, ±2.25 V ~ 2.75 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-LFCSP
• Resistance In Ohms: 250K
• Number Of Elements: 2
• # Of Taps: 1024
• Resistance (max): 250KOhm
• Power Supply Requirement: Single/Dual
• Interface Type: Serial (4-Wire/SPI)
• Single Supply Voltage (typ): 5V
• Dual Supply Voltage (typ): ±2.5V
• Single Supply Voltage (min): 3V
• Single Supply Voltage (max): 5.5V
• Dual Supply Voltage (min): ±2.25V
• Dual Supply Voltage (max): ±2.75V
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 16
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• For Use With: EVAL-ADN2850-25EBZ - BOARD EVALUATION FOR ADN2850-25
• Lead Free Status / RoHS Status: Not Compliant, Contains lead / RoHS non-compliant

ADN2850
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications....................................................................................... 1
General Description ......................................................................... 1
Functional Block Diagram .............................................................. 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
Absolute Maximum Ratings............................................................ 7
Pin Configuration and Function Descriptions............................. 8
Typical Performance Characteristics ........................................... 10
Theory of Operation ...................................................................... 13
REVISION HISTORY
4/11—Rev. B to Rev. C
Updated Format..................................................................Universal
Changes to EEMEM Performance ...................................Universal
Changes to Features Section............................................................ 1
Changes to Applications Section .................................................... 1
Changes to General Description Section ...................................... 1
Changes to Figure 1.......................................................................... 1
Changes to Specifications Section.................................................. 3
Changes to Table 2............................................................................ 5
Changes to Absolute Maximum Ratings Section......................... 7
Changes to Pin Configuration and Function Descriptions
Section................................................................................................ 8
Changes to Typical Performance Characteristics Section......... 10
Added Figure 15, Figure 16, Figure 17......................................... 11
Changes to Figure 21...................................................................... 12
Changes to Theory of Operation Section.................................... 13
Changes to Figure 25...................................................................... 14
Changes to Programming Variable Resister Section ................. 19
Changes to Table 13........................................................................ 19
Changes to EVAL-ADN2850EBZ Evaluation Kit Section ........ 20
Added Gain Control Compensation Section.............................. 21
Electrical Characteristics—25 kΩ, 250 kΩ Versions ............... 3
Interface Timing and EEMEM Reliability Characteristics—25
kΩ, 250 kΩ Versions .................................................................... 5
ESD Caution.................................................................................. 7
Test Circuits................................................................................. 12
Scratchpad and EEMEM Programming.................................. 13
Basic Operation .......................................................................... 13
EEMEM Protection.................................................................... 14
Digital Input and Output Configuration................................. 14
Serial Data Interface................................................................... 14
Rev. C | Page 2 of 28
Applications Information .............................................................. 21
Outline Dimensions ....................................................................... 25
Added Programmable Low-Pass Filter Section.......................... 21
Added Programmable Oscillator Section.................................... 21
Added Resistance Tolerance, Drift, and Temperature Coeffcient
Mistmatch Considerations Section .............................................. 24
Changes to Outline Dimensions Section .................................... 25
Changes to Ordering Guide .......................................................... 25
9/02—Rev. A to Rev. B
Changes to General Description .....................................................1
Changes to Electrical Characteristics .............................................2
Changes to Calculating Actual Full-Scale Resistance Section.....9
Changes to Table VI ..........................................................................9
Updated Outline Dimensions....................................................... 18
Daisy-Chain Operation ............................................................. 14
Terminal Voltage Operating Range ......................................... 15
Advanced Control Modes ......................................................... 17
RDAC Structure.......................................................................... 18
Programming the Variable Resistor......................................... 19
Programming Examples ............................................................ 19
EVAL-ADN2850SDZ Evaluation Kit....................................... 20
Gain Control Compensation .................................................... 21
Programmable Low-Pass Filter ................................................ 21
Programmable Oscillator .......................................................... 21
Optical Transmitter Calibration with ADN2841 ................... 22
Incoming Optical Power Monitoring ...................................... 22
Resistance Scaling ...................................................................... 23
Resistance Tolerance, Drift, and Temperature Coefficient
Mismatch Considerations ......................................................... 24
RDAC Circuit Simulation Model............................................. 24
Ordering Guide .......................................................................... 25