參數(shù)資料
型號: AD7720BRU
廠商: ANALOG DEVICES INC
元件分類: ADC
英文描述: CMOS Sigma-Delta Modulator
中文描述: 1-CH 16-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PDSO28
封裝: TSSOP-28
文件頁數(shù): 3/16頁
文件大?。?/td> 232K
代理商: AD7720BRU
–3–
REV. 0
AD7720
Parameter
B Version
Units
T est Conditions/Comments
LOGIC INPUT S
V
IH
, Input High Voltage
V
IL
, Input Low Voltage
I
INH
, Input Current
C
IN
, Input Capacitance
2
0.8
10
10
V min
V max
μ
A max
pF max
LOGIC OUT PUT S
V
OH
, Output High Voltage
V
OL
, Output Low Voltage
2.4
0.4
V min
V max
|I
OUT
|
200
μ
A
|I
OUT
|
1.6 mA
POWER SUPPLIES
AVDD
DVDD
I
DD
(T otal for AVDD, DVDD)
Active Mode
Standby Mode
4.75/5.25
4.75/5.25
V min/V max
V min/V max
Digital Inputs Equal to 0 V or DVDD
43
25
mA max
μ
A max
NOT ES
1
Operating temperature range is as follows: B Version: –40
°
C to +85
°
C.
2
Gain Error excludes reference error. T he modulator gain is calibrated w.r.t. the voltage on the REF2 pin.
3
Applies after calibration at temperature of interest.
4
Measurement Bandwidth = 0.5
×
f
; Input Level = –0.05 dB.
5
T
A
= +25
°
C to +85
°
C/T
A
= T
MIN
to T
MAX
.
Specifications subject to change without notice.
BIT STREAM
90.625kHz
FILTER 1
120dB
292.969kHz
BANDWIDTH = 90.625 kHz
TRANSITION = 292.969kHz
ATTENUATION = 120dB
COEFFICIENTS = 384
DECIMATE
BY 32
FILTER 2
16-BIT
OUTPUT
90.625kHz
90dB
104.687kHz
BANDWIDTH = 90.625 kHz
TRANSITION = 104.687kHz
ATTENUATION = 90dB
COEFFICIENTS = 151
DECIMATE
BY 2
Figure 1. Digital Filter (Consists of 2 FIR Filters). This filter is implemented on the AD7722.
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