AD5933
Preliminary Technical Data
TABLE OF CONTENTS
Specifications..................................................................................... 3
Standby Mode ............................................................................. 14
Read Temperature ...................................................................... 14
Error Checking ........................................................................... 14
RESET.......................................................................................... 14
System Clock............................................................................... 14
Output Voltage............................................................................ 14
Post Gain ..................................................................................... 14
Performing a Frequency Sweep – Flow Chart............................ 15
Serial Bus Interface..................................................................... 15
General I2C Timing.................................................................... 15
Writing/Reading to the AD5933 .............................................. 16
Block Write.................................................................................. 17
AD5933 Read Operations ......................................................... 17
Error Correction......................................................................... 18
P. E . C . ............................................................................................ 18
Checksum.................................................................................... 18
User Command Codes .............................................................. 18
Outline Dimensions....................................................................... 20
ESD Caution................................................................................ 20
Timing Characteristics..................................................................... 5
Pin Configuration and function description ................................ 6
General Description......................................................................... 7
Output Stage.................................................................................. 7
Circuit Description....................................................................... 7
Numerical Controlled Oscillator + Phase Modulator ............. 7
SIN ROM ....................................................................................... 8
Response Stage.............................................................................. 8
ADC Operation ............................................................................ 8
DFT Conversion ........................................................................... 8
Temperature Sensor ..................................................................... 9
Register Map (Each Row equals 8 Bits of Data)......................... 11
Control Register.......................................................................... 13
Control Register Decode: .......................................................... 14
Initialize Sensor with Start Frequency..................................... 14
Start Frequency Sweep............................................................... 14
Increment Frequency................................................................. 14
Repeat Frequency ....................................................................... 14
Power Down................................................................................ 14
REVISION HISTORY
12/04—Revision PrA—Preliminary Version
Rev. PrA | Page 2 of 20