參數(shù)資料
型號(hào)： AD7621AST
廠商： ANALOG DEVICES INC
元件分類： ADC
英文描述： 16-Bit, 1 LSB INL, 3 MSPS PulSAR ADC
中文描述： 1-CH 16-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL/PARALLEL ACCESS, PQFP48
封裝： MO-026-BBC, LQFP-48
文件頁(yè)數(shù)： 5/26頁(yè)
文件大?。?/td> 265K
代理商： AD7621AST
REV. Pr D
PRELIMINARY TECHNICAL DATA
AD7621
–5–
WARNING
ING!
ESD SENSITIVE
DEVICE
ABSOLUTE MAXIMUM RATINGS
1
Analog Inputs
IN+
2
, IN-
2
, REF, REFBUFIN, TEMP, REFGND to
AGND . . . . . . . . . . AVDD + 0.3 V to AGND – 0.3 V
Ground Voltage Differences
AGND, DGND, OGND . . . . . . . . . . . . . . . . . . .±0.3 V
Supply Voltages
AVDD, DVDD . . . . . . . . . . . . . . . . . . . -0.3V to +2.7 V
OVDD . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +3.8 V
Digital Inputs . . . . . . . . . . . . . . . . . . . . . . –0.3 V to 5.5V
Internal Power Dissipation
3
. . . . . . . . . . . . . . . . 700 mW
Internal Power Dissipation
4
. . . . . . . . . . . . . . . . . . . 2.5W
Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . 150°C
Storage Temperature Range . . . . . . . . .–65°C to +150°C
Lead Temperature Range
(Soldering 10 sec) . . . . . . . . . . . . . . . . . . . . . . . . . 300°C
NOTES
1
Stresses above those listed under Absolute Maximum Ratings may
cause permanent 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 ex-
tended periods may affect device reliability.
2
See Analog Input section.
3
Specification is for device in free air: 48-Lead LQFP:
θ
JA
= 91°C/W,
θ
JC
=
30°C/W.
4
Specification is for device in free air: 48-Lead LFCSP:
θ
JA
= 26°C/W.
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 AD7621 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.
ORDERING GUIDE
Model
Temperature Range
Package Description
Package Option
AD7621AST
AD7621ASTRL
AD7621ACP
AD7621ACPRL
EVAL-AD7621CB
1
EVAL-CONTROL BRD3
2
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
Quad Flatpack (LQFP)
Quad Flatpack (LQFP)
Chip Scale (LFCSP)
Chip Scale (LFCSP)
Evaluation Board
Controller Board
ST-48
ST-48
CP-48
CP-48
NOTES
1
This board can be used as a standalone evaluation board or in conjunction with the EVAL-CONTROL BRD3 for evaluation/demonstration
purposes.
2
This board allows a PC to control and communicate with all Analog Devices evaluation boards ending in the CB designators.
I
OH
500 A
I
OL
TO OUTPUT
PIN
1.4V
C
L
50pF
*
*
IN SERIAL INTERFACE MODES, THE SYNC, SCLK, AND
SDOUT TIMINGS ARE DEFINED WITH A MAXIMUM LOAD
C
L
OF 10pF; OTHERWISE, THE LOAD IS 50pF MAXIMUM.
500 A
Figure 1. Load Circuit for Digital Interface Timing,
SDOUT, SYNC, SCLK Outputs, C
L
= 10 pF
0.8V
t
DELAY
2V
2V
0.8V
0.8V
2V
t
DELAY
Figure 2. Voltage Reference Levels for Timing
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