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AD7678 Fiches technique(PDF) 7 Page - Analog Devices

No de pièce AD7678
Description  16-Bit, 500 kSPS PulSAR Dual, 2-Channel, Simultaneous Sampling ADC
Download  28 Pages
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Fabricant  AD [Analog Devices]
Site Internet  http://www.analog.com
Logo AD - Analog Devices

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AD7654
Rev. B | Page 7 of 28
ABSOLUTE MAXIMUM RATINGS
Table 5.
Parameter
Values
Analog Inputs
INAx1, INBx1, REFx, INxN,
REFGND
AVDD + 0.3 V to
AGND
− 0.3 V
Ground Voltage Differences
AGND, DGND, OGND
±0.3 V
Supply Voltages
AVDD, DVDD, OVDD
−0.3 V to +7 V
AVDD to DVDD, AVDD to OVDD
±7 V
DVDD to OVDD
−0.3 V to +7 V
Digital Inputs
−0.3 V to DVDD + 0.3 V
Internal Power Dissipation2
700 mW
Internal Power Dissipation3
2.5 W
Junction Temperature
150°C
Storage Temperature Range
−65°C to +150°C
Lead Temperature Range
(Soldering 10 sec)
300°C
1 See Analog Inputs section.
2 Specification is for device in free air:
48-lead LQFP:
θJA = 91°C/W, θJC = 30°C/W.
3 Specification is for device in free air: 48-lead LFCSP; θJA = 26°C/W.
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.
TO OUTPUT
PIN
CL
60pF*
500µA
IOH
1.6mA
IOL
1.4V
*IN SERIAL INTERFACE MODES, THE SYNC, SCLK, AND
SDOUT TIMINGS ARE DEFINED WITH A MAXIMUM LOAD
CL OF 10pF; OTHERWISE, THE LOAD IS 60pF MAXIMUM.
Figure 2. Load Circuit for Digital Interface Timing
(SDOUT, SYNC, SCLK Outputs, CL = 10 pF)
0.8V
2V
2V
0.8V
tDELAY
2V
0.8V
tDELAY
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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