AD7457 Analog Devices, AD7457 Datasheet - Page 2

• Manufacturer Part Number: AD7457
• Description: Pseudo Differential Input, 100 kSPS, 12-Bit ADC in 8-Lead SOT-23
• Manufacturer: Analog Devices

Specifications of AD7457

• Resolution (bits): 12bit
• # Chan: 1
• Sample Rate: 100kSPS
• Interface: Ser,SPI
• Analog Input Type: Diff-Uni
• Ain Range: (Vref) p-p
• Adc Architecture: SAR
• Pkg Type: SOT

AD7457
TABLE OF CONTENTS
Specifications..................................................................................... 3
Timing Specifications....................................................................... 5
Absolute Maximum Ratings............................................................ 6
Pin Configuration and Function Descriptions............................. 7
Typical Performance Characteristics ............................................. 8
Terminology .................................................................................... 10
Theory of Operation ...................................................................... 11
REVISION HISTORY
2/05—Rev. 0 to Rev. A
Changes to Table 3............................................................................ 6
Changes to Ordering Guide .......................................................... 17
10/03—Rev. 0: Initial Version
ESD Caution.................................................................................. 6
Circuit Information.................................................................... 11
Converter Operation.................................................................. 11
ADC Transfer Function............................................................. 11
Typical Connection Diagram ................................................... 11
Rev. A | Page 2 of 20
Application Hints ........................................................................... 16
Outline Dimensions ....................................................................... 17
Analog Input ............................................................................... 12
Analog Input Structure.............................................................. 12
Digital Inputs .............................................................................. 13
Reference Section ....................................................................... 13
Serial Interface ............................................................................ 13
Power Consumption .................................................................. 14
Microprocessor Interfacing....................................................... 14
Grounding and Layout .............................................................. 16
Ordering Guide .......................................................................... 17