AD7450A Analog Devices, AD7450A Datasheet - Page 2

• Manufacturer Part Number: AD7450A
• Description: Differential Input, 1 MSPS, 12- (AD7450A) & 10-Bit (AD7440) ADCs
• Manufacturer: Analog Devices

Specifications of AD7450A

• Resolution (bits): 12bit
• # Chan: 1
• Sample Rate: 1MSPS
• Interface: Ser
• Analog Input Type: Diff-Uni
• Ain Range: (2Vref) p-p
• Adc Architecture: SAR
• Pkg Type: SOP,SOT

AD7440/AD7450A
TABLE OF CONTENTS
AD7440–Specifications.................................................................... 3
AD7450A–Specifications................................................................. 5
Timing Specifications....................................................................... 7
Absolute Maximum Ratings............................................................ 8
Pin Configurations and Function Descriptions ........................... 9
Terminology .................................................................................... 10
AD7440/AD7450A–Typical Performance Characteristics ....... 12
Circuit Information ........................................................................ 15
REVISION HISTORY
9/05—Rev. B to Rev. C
Changes to Ordering Guide ............................................................ 28
2/04—Data Sheet changed from Rev. A to Rev. B
Added Patent Note .............................................................................. 1
1/04—Data Sheet changed from Rev. 0 to Rev. A
Updated Format.................................................................... Universal
Changes to General Description ....................................................... 1
Changes to Table 1 footnotes ............................................................. 3
Changes to Table 2 footnotes ............................................................. 5
Changes to Table 3 footnotes ............................................................. 7
ESD Caution.................................................................................. 8
Converter Operation.................................................................. 15
ADC Transfer Function............................................................. 15
Typical Connection Diagram ................................................... 16
Analog Input ............................................................................... 16
Driving Differential Inputs ....................................................... 18
Rev. C | Page 2 of 28
Modes of Operation ....................................................................... 23
Outline Dimensions ....................................................................... 27
Ordering Guide............................................................................... 28
Digital Inputs .............................................................................. 19
Reference ..................................................................................... 19
Single-Ended Operation............................................................ 20
Serial Interface ............................................................................ 21
Normal Mode.............................................................................. 23
Power-Down Mode .................................................................... 23
Power-Up Time .......................................................................... 24
Power vs. Throughput Rate....................................................... 24
Microprocessor and DSP Interfacing ...................................... 25
Grounding and Layout Hints.................................................... 26
Evaluating the AD7440/AD7450A Performance................... 26