AD5235BRU25-RL7 Analog Devices Inc, AD5235BRU25-RL7 Datasheet - Page 2

• Manufacturer Part Number: AD5235BRU25-RL7
• Description: IC DGTL POT DUAL 1024POS 16TSSOP
• Manufacturer: Analog Devices Inc

Specifications of AD5235BRU25-RL7

• Rohs Status: RoHS non-compliant
• Taps: 1024
• Resistance (ohms): 25K
• 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-TSSOP (0.173", 4.40mm Width)
• Number Of Elements: 2
• # Of Taps: 1024
• Resistance (max): 25KOhm
• Power Supply Requirement: Single/Dual
• Interface Type: Serial (4-Wire/SPI)
• Single Supply Voltage (typ): 3.3/5V
• 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: Not Compliant
• Other names: AD5235BRU25-RL7; AD5235BRU25-RL7TR

AD5235
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 ............................................. 9
Theory of Operation ...................................................................... 14
REVISION HISTORY
4/09—Rev. B to Rev. C
Changes to Figure 1 .......................................................................... 1
Changes to Specifications ................................................................ 3
Changes to SDO, Description Column, Table 4 ........................... 8
Changes to Figure 18 ...................................................................... 11
Changes to Theory of Operation Section .................................... 14
Changes to Serial Data Interface Section .................................... 15
Changes to Linear Increment and Decrement Instructions
Section, Logarithmic Taper Mode Adjustment Section, and
Figure 42 .......................................................................................... 18
Changes to Rheostat Operations Section .................................... 20
Changes to Bipolar Programmable Gain Amplifier Section,
Figure 49, Table 21, and 10-Bit Bipolar DAC Section................ 23
Changes to Programmable Oscillator Section and Figure 56 ... 25
Changes to Ordering Guide .......................................................... 28
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 .................................. 14
Basic Operation .......................................................................... 14
EEMEM Protection .................................................................... 15
Digital Input and Output Configuration ................................. 15
Serial Data Interface ................................................................... 15
Daisy-Chain Operation ............................................................. 15
Terminal Voltage Operating Range .......................................... 16
Advanced Control Modes ......................................................... 18
RDAC Structure .......................................................................... 19
Rev. C | Page 2 of 28
Applications Information .............................................................. 22
Outline Dimensions ....................................................................... 28
7/04—Rev. A to Rev. B
Updated Formatting ........................................................... Universal
Edits to Features, General Description, and Block Diagram ....... 1
Changes to Specifications ................................................................. 3
Replaced Timing Diagrams .............................................................. 6
Changes to Absolute Maximum Ratings ........................................ 7
Changes to Pin Function Descriptions ........................................... 8
Changes to Typical Performance Characteristics .......................... 9
Additional Test Circuit (Figure 36) ................................................. 9
Edits to Theory of Operation ........................................................ 14
Edits to Applications ...................................................................... 23
Updated Outline Dimensions ....................................................... 27
8/02—Rev. 0 to Rev. A
Change to Features and General Description ................................ 1
Change to Specifications .................................................................. 2
Change to Calculating Actual End-to-End Terminal
Resistance Section .......................................................................... 14
Programming the Variable Resistor ......................................... 20
Programming the Potentiometer Divider ............................... 20
Programming Examples ............................................................ 21
EVAL-AD5235EBZ Evaluation Kit .......................................... 21
Bipolar Operation from Dual Supplies.................................... 22
Gain Control Compensation .................................................... 22
High Voltage Operation ............................................................ 22
DAC .............................................................................................. 22
Bipolar Programmable Gain Amplifier ................................... 23
10-Bit Bipolar DAC .................................................................... 23
Programmable Voltage Source with Boosted Output ........... 23
Programmable Current Source ................................................ 24
Programmable Bidirectional Current Source ......................... 24
Programmable Low-Pass Filter ................................................ 24
Programmable Oscillator .......................................................... 25
Optical Transmitter Calibration with ADN2841 ................... 25
Resistance Scaling ...................................................................... 26
Resistance Tolerance, Drift, and Temperature Coefficient
Mismatch Considerations ......................................................... 26
RDAC Circuit Simulation Model ............................................. 27
Ordering Guide .......................................................................... 28