AD7940BRM Analog Devices Inc, AD7940BRM Datasheet - Page 2

• Manufacturer Part Number: AD7940BRM
• Description: IC ADC 14BIT UNIPOLAR 8-MSOP
• Manufacturer: Analog Devices Inc

Specifications of AD7940BRM

• Data Interface: DSP, MICROWIRE™, QSPI™, Serial, SPI™
• Operating Temperature: -40°C ~ 85°C
• Number Of Bits: 14
• Sampling Rate (per Second): 100k
• Number Of Converters: 1
• Power Dissipation (max): 26.4mW
• Voltage Supply Source: Single Supply
• Mounting Type: Surface Mount
• Package / Case: 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
• Resolution (bits): 14bit
• Input Channel Type: Single Ended
• Supply Voltage Range - Analogue: 2.5V To 5.5V
• Supply Current: 5.2mA
• No. Of Pins: 8
• Sampling Rate: 100kSPS
• Rohs Compliant: No
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• For Use With: EVAL-AD7940CBZ - BOARD EVALUATION AD7940AD7940-DBRD - BOARD EVAL FOR AD7940 STAMP SPI
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

AD7940
TABLE OF CONTENTS
Specifications..................................................................................... 3
Timing Specifications....................................................................... 5
Absolute Maximum Ratings............................................................ 6
Pin Configurations and Function Descriptions ........................... 7
Terminology ...................................................................................... 8
Typical Performance Characteristics ............................................. 9
Circuit Information ........................................................................ 11
ADC Transfer Function ................................................................. 12
Modes of Operation ....................................................................... 13
REVISION HISTORY
6/04—Revision 0: Initial Version
ESD Caution.................................................................................. 6
Converter Operation.................................................................. 11
Analog Input ............................................................................... 11
Typical Connection Diagram ................................................... 12
Rev. 0 | Page 2 of 20
Power vs. Throughput Rate ........................................................... 15
Serial Interface ................................................................................ 16
Microprocessor Interfacing........................................................... 17
Application Hints ........................................................................... 19
Outline Dimensions ....................................................................... 20
Normal Mode.............................................................................. 13
Power-Down Mode.................................................................... 14
AD7940 to TMS320C541 .......................................................... 17
AD7940 to ADSP-218x.............................................................. 17
AD7940 to DSP563xx ................................................................ 18
Grounding and Layout .............................................................. 19
Evaluating the AD7940 Performance ...................................... 19
Ordering Guide .......................................................................... 20