AD7722(Rev0) Просмотр технического описания (PDF) - Analog Devices
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AD7722 Datasheet PDF : 24 Pages
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AD7722
Parameter
Test Conditions/Comments
Min
LOGIC INPUTS (Excluding CLKIN)
VINH, Input High Voltage
2.0
VINL, Input Low Voltage
CLOCK INPUT (CLKIN)
VINH, Input High Voltage
4.0
VINL, Input Low Voltage
ALL LOGIC INPUTS
IIN, Input Current
CIN, Input Capacitance
VIN = 0 V to DVDD
LOGIC OUTPUTS
VOH, Output High Voltage
|IOUT| = 200 µA
4.0
VOL, Output Low Voltage
|IOUT| = 1.6 mA
POWER SUPPLIES
AVDD, AVDD1
DVDD
IDD
4.75
4.75
Total from AVDD and DVDD
Power Consumption
NOTES
1Operating temperature range is as follows : A Version ; –40 °C to +85°C.
2Measurement Bandwidth = 0.5 × FS; Input Level = –0.05 dB.
3TA = +25°C to +85°C/TA = TMIN to TMAX.
4Applies after calibration at temperature of interest.
5Gain Error excludes reference error. The ADC gain is calibrated w.r.t. the voltage on the REF2 pin.
Specifications subject to change without notice.
A Version
Typ
Max
0.8
0.4
± 10
10
0.4
5.25
5.25
75
375
Units
V
V
V
V
µA
pF
V
V
V
V
mA
mW
ABSOLUTE MAXIMUM RATINGS*
(TA = +25°C unless otherwise noted)
DVDD to DGND . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to 7 V
AVDD, AVDD1 to AGND . . . . . . . . . . . . . . . . . . –0.3 V to 7 V
AVDD, AVDD1 to DVDD . . . . . . . . . . . . . . . . . . . –1 V to +1 V
AGND, AGND1 to DGND . . . . . . . . . . . . . –0.3 V to +0.3 V
Digital Inputs to DGND . . . . . . . . . . –0.3 V to DVDD + 0.3 V
Digital Outputs to DGND . . . . . . . . . –0.3 V to DVDD + 0.3 V
VIN(+), VIN(–) to AGND . . . . . . . . . . –0.3 V to AVDD + 0.3 V
REF1 to AGND . . . . . . . . . . . . . . . . –0.3 V to AVDD + 0.3 V
REF2 to AGND . . . . . . . . . . . . . . . . –0.3 V to AVDD + 0.3 V
DGND, AGND1, AGND2 . . . . . . . . . . . . . . . . . . . . . ± 0.3 V
Operating Temperature Range . . . . . . . . . . . –40°C to +85°C
Storage Temperature Range . . . . . . . . . . . . –65°C to +150°C
Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . +150°C
θJA Thermal Impedance . . . . . . . . . . . . . . . . . . . . . . . 95°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
permanent damage to the device. This is a stress rating only and 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.
Model
AD7722AS
ORDERING GUIDE
Temperature
Package
Package
–40°C to +85°C 44-Pin PQFP S-44
TO
OUTPUT
PIN
CL
50pF
IOL
1.6mA
+1.6V
IOH
200µA
Figure 1. Load Circuit for Timing Specifications
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 AD7722 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.
REV. 0
–3–
WARNING!
ESD SENSITIVE DEVICE
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