參數(shù)資料
型號(hào): AD7787BRM-REEL
廠商: ANALOG DEVICES INC
元件分類: ADC
英文描述: Low Power, 2-Channel 24-Bit Sigma-Delta ADC
中文描述: 2-CH 24-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PDSO10
封裝: MO-187BA, MSOP-10
文件頁數(shù): 4/20頁
文件大?。?/td> 326K
代理商: AD7787BRM-REEL
AD7787
Parameter
LOGIC INPUTS
All Inputs Except SCLK
1
V
INL
, Input Low Voltage
V
INH
, Input High Voltage
SCLK Only (Schmitt-Triggered Input)
1
V
T
(+)
V
T
()
V
T
(+) V
T
()
V
T
(+)
V
T
()
V
T
(+) V
T
()
Input Currents
Input Capacitance
LOGIC OUTPUTS
V
OH
, Output High Voltage
1
V
OL
, Output Low Voltage
1
V
OH
, Output High Voltage
1
V
OL
, Output Low Voltage
1
Floating-State Leakage Current
Floating-State Output Capacitance
Data Output Coding
POWER REQUIREMENTS
5
Power Supply Voltage
V
DD
GND
Power Supply Currents
I
DD
Current
6
I
DD
(Power-Down Mode)
Rev. 0 | Page 4 of 20
AD7787B
0.8
0.4
2.0
1.4/2
0.8/1.4
0.3/0.85
0.9/2
0.4/1.1
0.3/0.85
±1
10
V
DD
0.6
0.4
4
0.4
±1
10
Offset Binary
2.5/5.25
75
145
80
160
1
Unit
V max
V max
V min
V min/V max
V min/V max
V min/V max
V min/V max
V min/V max
V min/V max
μA max
pF typ
V min
V max
V min
V max
μA max
pF typ
V min/max
μA max
μA max
μA max
μA max
μA max
Test Conditions/Comments
V
DD
= 5 V.
V
DD
= 3 V.
V
DD
= 3 V or 5 V.
V
DD
= 5 V.
V
DD
= 5 V.
V
DD
= 5 V.
V
DD
= 3 V.
V
DD
= 3 V.
V
DD
= 3 V.
V
IN
= V
DD
or GND.
All Digital Inputs.
V
DD
= 3 V, I
SOURCE
= 100 μA.
V
DD
= 3 V, I
SINK
= 100 μA.
V
DD
= 5 V, I
SOURCE
= 200 μA.
V
DD
= 5 V, I
SINK
= 1.6 mA.
65 μA typ, V
DD
= 3.6 V, unbuffered mode.
130 μA typ, V
DD
= 3.6 V, buffered mode.
73 μA typ, V
DD
= 5.25 V, unbuffered mode.
145 μA typ, V
DD
= 5.25 V, buffered mode.
1
Specification is not production tested but is supported by characterization data at initial product release.
2
Full-scale error applies to both positive and negative full scale and applies at the factory calibration conditions (V
DD
= 4 V).
3
The AD7787 can tolerate absolute analog input voltages down to GND 200 mV but the leakage current will increase.
4
FS[2:0] are the three bits used in the filter register to select the output word rate.
5
Digital inputs equal to V
DD
or GND.
6
The current consumption can be further reduced by using the ADC in one of the low power modes (see Table 14).
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