參數(shù)資料
型號(hào)： AD7722
廠商： Analog Devices, Inc.
元件分類： ADC
英文描述： 16-Bit, 195 kSPS CMOS, Sigma-Delta ADC
中文描述： 16位，195 kSPS的的CMOS，Σ-Δ模數(shù)轉(zhuǎn)換器
文件頁(yè)數(shù)： 3/24頁(yè)
文件大?。?/td> 526K
代理商： AD7722
–3–
REV. 0
AD7722
A Version
Parameter
Test Conditions/Comments
Min
Typ
Max
Units
LOGIC INPUTS (Excluding CLKIN)
V
INH
, Input High Voltage
V
INL
, Input Low Voltage
2.0
V
V
0.8
CLOCK INPUT (CLKIN)
V
INH
, Input High Voltage
V
INL
, Input Low Voltage
4.0
V
V
0.4
ALL LOGIC INPUTS
I
IN
, Input Current
C
IN
, Input Capacitance
V
IN
= 0 V to DV
DD
±
10
10
μ
A
pF
LOGIC OUTPUTS
V
OH
, Output High Voltage
V
OL
, Output Low Voltage
|I
OUT
| = 200
μ
A
|I
OUT
| = 1.6 mA
4.0
V
V
0.4
POWER SUPPLIES
AV
DD
, AV
DD1
DV
DD
I
DD
Power Consumption
4.75
4.75
5.25
5.25
75
375
V
V
mA
mW
Total from AV
DD
and DV
DD
NOTES
1
Operating temperature range is as follows : A Version ; –40
°
C to +85
°
C.
2
Measurement Bandwidth = 0.5
×
F
S
; Input Level = –0.05 dB.
3
T
A
= +25
°
C to +85
°
C/T
A
= T
MIN
to T
MAX
.
4
Applies after calibration at temperature of interest.
5
Gain Error excludes reference error. The ADC gain is calibrated w.r.t. the voltage on the REF2 pin.
Specifications subject to change without notice.
ABSOLUTE MAXIMUM RATINGS*
(T
A
= +25
°
C unless otherwise noted)
DV
DD
to DGND . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to 7 V
AV
DD
, AV
DD1
to AGND . . . . . . . . . . . . . . . . . . –0.3 V to 7 V
AV
DD
, AV
DD1
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 DV
DD
+ 0.3 V
Digital Outputs to DGND . . . . . . . . . –0.3 V to DV
DD
+ 0.3 V
V
IN
(+), V
IN
(–) to AGND . . . . . . . . . . –0.3 V to AV
DD
+ 0.3 V
REF1 to AGND . . . . . . . . . . . . . . . . –0.3 V to AV
DD
+ 0.3 V
REF2 to AGND . . . . . . . . . . . . . . . . –0.3 V to AV
DD
+ 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
θ
JA
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.
WARNING!
ESD SENSITIVE DEVICE
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.
ORDERING GUIDE
Model
Temperature
Package
Package
AD7722AS
–40
°
C to +85
°
C
44-Pin PQFP
S-44
I
1.6mA
I
200μA
+1.6V
C
L
50pF
TO
OUTPUT
PIN
Figure 1. Load Circuit for Timing Specifications
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