參數(shù)資料
型號: AD7738BRU
廠商: ANALOG DEVICES INC
元件分類: ADC
英文描述: 8-Channel, High Throughput,
中文描述: 8-CH 24-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PDSO28
封裝: MO-153AE, TSSOP-28
文件頁數(shù): 6/28頁
文件大小: 407K
代理商: AD7738BRU
REV. 0
–6–
AD7738
CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily
accumulate on the human body and test equipment and can discharge without detection. Although the
AD7738 features proprietary ESD protection circuitry, permanent damage may occur on devices
subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended
to avoid performance degradation or loss of functionality.
ABSOLUTE MAXIMUM RATINGS
*
(T
A
= 25 C unless otherwise noted.)
AV
DD
to AGND, DV
DD
to DGND . . . . . . . . . –0.3 V to +7 V
AGND to DGND . . . . . . . . . . . . . . . . . . . . . –0.3 V to +0.3 V
AV
DD
to DV
DD
. . . . . . . . . . . . . . . . . . . . . . . . . . –5 V to +5 V
AIN, AINCOM to AGND . . . . . . . . . –0.3 V to AV
DD
+ 0.3 V
REFIN(+), REFIN(–) to AGND . . . . . –0.3 V to AV
DD
+ 0.3 V
MUXOUT(+) to AGND . . . . . . . . . . . –0.3 V to AV
DD
+ 0.3 V
MUXOUT(–) to AGND . . . . . . . . . . . –0.3 V to AV
DD
+ 0.3 V
ADCIN(+), ADCIN(–) to AGND . . . . –0.3 V to AV
DD
+ 0.3 V
P1 Voltage to AGND . . . . . . . . . . . . . . –0.3 V to AV
DD
+ 0.3 V
Digital Input Voltage to DGND . . . . . –0.3 V to AV
DD
+ 0.3 V
Digital Output Voltage to DGND . . . . –0.3 V to AV
DD
+ 0.3 V
Operating Temperature Range . . . . . . . . . . –40 C to +105 C
Storage Temperature Range . . . . . . . . . . . . –65 C to +150 C
Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . 150 C
TSSOP Package, Power Dissipation . . . . . . . . . . . . . 660 mW
JA
Thermal Impedance . . . . . . . . . . . . . . . . . . . . . . 97.9 C/W
Lead Temperature, Soldering
Vapor Phase (60 sec) . . . . . . . . . . . . . . . . . . . . . . . . . 215 C
Infrared (15 sec) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220 C
*
Stresses above those listed under Absolute Maximum Ratings may cause perma-
nent damage to the device. This is a stress rating only; functional operation of the
device at these or any other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect device reliability.
SCLK
DIN
DOUT
CS
RDY
RESET
SERIAL
INTERFACE
CONTROL
LOGIC
AIN4
AIN5
AIN6
AIN7
MUX
AINCOM/P0
AIN0
AIN1
AIN2
AIN3
DGND
DV
DD
REFERENCE
DETECT
REFIN– REFIN+
I/O PORT
SYNC
/P1
CLOCK
GENERATOR
MCLKIN
MCLKOUT
MUXOUT ADCIN
AGND
AV
DD
24-BIT
- ADC
BUFFER
AD7738
CALIBRATION
CIRCUITRY
DV
DD
AV
DD
Figure 4. Block Diagram
ORDERING GUIDE
Temperature
Range
Package
Description
Package
Options
Model
AD7738BRU
–40 C to +105 C
TSSOP 28
RU-28
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