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參數資料
| 型號： | AD7641ASTRL |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | ADC |
| 英文描述： | 18-Bit, 2 MSPS SAR ADC |
| 中文描述： | 1-CH 18-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PQFP48 |
| 封裝： | MS-026-BBC, LQFP-48 |
| 文件頁數： | 6/24頁 |
| 文件大小： | 324K |
| 代理商： | AD7641ASTRL |
AD7641
Preliminary Technical Data
ABSOLUTE MAXIMUM RATINGS
Table 4. AD7641 Stress Ratings
1
Parameter
Analog Inputs
IN+
2
, IN-
2
, REF, REFBUFIN,
REFGND to AGND
Ground Voltage Differences
AGND, DGND, OGND
Supply Voltages
AVDD, DVDD
OVDD
Digital Inputs
Internal Power Dissipation
3
Internal Power Dissipation
4
Junction Temperature
Storage Temperature Range
Lead Temperature Range
(Soldering 10 sec)
Rev. Pr E | Page 6 of 24
Rating
AVDD + 0.3 V to AGND – 0.3 V
±0.3 V
–0.3 V to +2.7 V
–0.3 V to +3.8 V
–0.3 V to 5.5V
700 mW
2.5 W
150°C
–65°C to +150°C
300°C
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 extended periods may
affect device reliability
2
See Analog Inputs 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.
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 2. 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 3. Voltage Reference Levels for Timing
ESD 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 this product 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.
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