AD7294 Analog Devices, AD7294 Datasheet - Page 2

• Manufacturer Part Number: AD7294
• Description: 12-Bit Monitor and Control System with Multichannel ADC, DACs, Temperature Sensor, and Current Sense
• Manufacturer: Analog Devices

Specifications of AD7294

• Resolution (bits): 12bit
• # Chan: 9
• Sample Rate: 200kSPS
• Interface: I²C/Ser 2-Wire,Ser
• Analog Input Type: Diff-Uni,SE-Uni
• Ain Range: (Vref) p-p,2 V p-p,Uni (Vref),Uni (Vref) x 2
• Adc Architecture: SAR
• Pkg Type: CSP

AD7294
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
General Description ......................................................................... 1
Revision History ............................................................................... 3
Functional Block Diagram .............................................................. 4
Specifications ..................................................................................... 5
Absolute Maximum Ratings .......................................................... 10
Pin Configuration and Function Descriptions ........................... 11
Typical Performance Characteristics ........................................... 14
Terminology .................................................................................... 19
Theory of Operation ...................................................................... 20
Register Setting ............................................................................... 27
DAC Specifications....................................................................... 5
ADC Specifications ...................................................................... 6
General Specifications ................................................................. 8
Timing Characteristics ................................................................ 9
Thermal Resistance .................................................................... 10
ESD Caution ................................................................................ 10
DAC Terminology ...................................................................... 19
ADC Terminology ...................................................................... 19
ADC Overview ........................................................................... 20
ADC Transfer Functions ........................................................... 20
Analog Inputs .............................................................................. 20
Current Sensor ............................................................................ 22
Analog Comparator Loop ......................................................... 23
Temperature Sensor ................................................................... 24
DAC Operation ........................................................................... 25
ADC and DAC Reference .......................................................... 25
V
Address Pointer Register ........................................................... 27
Command Register (0x00) ........................................................ 28
Result Register (0x01) ................................................................ 28
DRIVE
Feature .............................................................................. 26
Rev. H | Page 2 of 48
I
Modes of Operation ....................................................................... 39
Alerts and Limits Theory .............................................................. 41
Applications Information .............................................................. 43
Layout and Configuration ............................................................. 45
Outline Dimensions ....................................................................... 46
2
C Interface .................................................................................... 34
T
T
DAC
Alert Status Register A (0x05), Register B (0x06), and
Register C (0x07) ........................................................................ 30
Channel Sequence Register (0x08) .......................................... 30
Configuration Register (0x09) .................................................. 31
Power-Down Register (0x0A) ................................................... 32
DATA
(V
Hysteresis Registers: 0x0D (V
0x16 (V
T
General I
Serial Bus Address Byte ............................................................. 35
Interface Protocol ....................................................................... 35
Command Mode ........................................................................ 39
Autocycle Mode .......................................................................... 40
Alert_Flag Bit .............................................................................. 41
Alert Status Registers ................................................................. 41
Data
Hysteresis ..................................................................................... 42
Base Station Power Amplifier Monitor and Control ............. 43
Gain Control of Power Amplifier ............................................. 44
Power Supply Bypassing and Grounding ................................ 45
Ordering Guide .......................................................................... 47
SENSE
SENSE
SENSE
IN
1); 0x11, 0x12 (V
HIGH
A
1, T
INT Result Register (0x04).............................................. 29
, DAC
Offset Registers (0x26 and 0x27) ................................... 33
HIGH
IN
SENSE
and Data
2
3) .................................................................................. 32
/DATA
C Timing .................................................................... 34
B
, DAC
2 Result Registers (0x02 and 0x03) ....................... 29
LOW
C
LOW
, DAC
IN
Registers: 0x0B, 0x0C (V
2); 0x14, 0x15 (V
Monitoring Features ............................ 41
D
, Registers (0x01 to 0x04) ............... 30
IN
0), 0x10 (V
IN
3) .............................. 32
IN
1), 0x13 (V
Data Sheet
IN
0); 0x0E, 0x0F
IN
2),