EVAL-AD7998CBZ Analog Devices Inc, EVAL-AD7998CBZ Datasheet - Page 2

• Manufacturer Part Number: EVAL-AD7998CBZ
• Description: BOARD EVALUATION FOR AD7998CBZ
• Manufacturer: Analog Devices Inc

Specifications of EVAL-AD7998CBZ

• Number Of Adc's: 1
• Number Of Bits: 12
• Sampling Rate (per Second): 188k
• Data Interface: Serial
• Inputs Per Adc: 8 Single Ended
• Input Range: 0 ~ 5.5 V
• Power (typ) @ Conditions: 7.7mW @ 188kSPS, 5.5 V
• Voltage Supply Source: Single
• Operating Temperature: -40°C ~ 85°C
• Utilized Ic / Part: AD7998
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

AD7997/AD7998
TABLE OF CONTENTS
AD7997 Specifications..................................................................... 3
AD7998 Specifications..................................................................... 5
I
Absolute Maximum Ratings............................................................ 9
Pin Configuration and Pin Function Descriptions.................... 10
Terminology .................................................................................... 11
Typical Performance Characteristics ........................................... 12
Circuit Information ........................................................................ 15
Internal Register Structure ............................................................ 18
Serial Interface ................................................................................ 23
REVISION HISTORY
9/04—Revision 0: Initial Version
2
C Timing Specifications ................................................................ 7
ESD Caution.................................................................................. 9
Converter Operation.................................................................. 15
Typical Connection Diagram ................................................... 16
Analog Input ............................................................................... 16
Address Pointer Register ........................................................... 18
Configuration Register .............................................................. 19
Conversion Result Register ....................................................... 20
Limit Registers ............................................................................ 20
Alert Status Register (CH1 to CH4) ........................................ 21
Cycle Timer Register.................................................................. 22
Sample Delay and Bit Trial Delay............................................. 22
Rev. 0 | Page 2 of 32
Writing to the AD7997/AD7998 .................................................. 24
Reading Data from the AD7997/AD7998................................... 26
ALERT/BUSY Pin .......................................................................... 27
Modes of Operation ....................................................................... 28
Outline Dimensions ....................................................................... 31
Serial Bus Address ...................................................................... 23
Writing to the Address Pointer Register for a Subsequent
Read.............................................................................................. 24
Writing a Single Byte of Data to the Alert Status Register or
Cycle Register.............................................................................. 24
Writing Two Bytes of Data to a Limit, Hysteresis, or
Configuration Register .............................................................. 24
SMBus ALERT ............................................................................ 27
BUSY ............................................................................................ 27
Placing the AD7997-1/AD7998-1 into High Speed Mode ... 27
The Address Select (AS) Pin ..................................................... 27
Mode 1—Using the CONVST Pin ........................................... 28
Mode 2 – COMMAND MODE ............................................... 29
Mode 3—Automatic Cycle Interval Mode.............................. 30
Ordering Guide .......................................................................... 31
Related Parts in I
2
C-Compatible ADC Product Family........ 31