參數(shù)資料
型號(hào): AD7790
廠商: Analog Devices, Inc.
元件分類: ADC
英文描述: Low Power, 16-Bit Buffered Sigma-Delta ADC
中文描述: 低功耗,16位緩沖Σ-Δ模數(shù)轉(zhuǎn)換器
文件頁數(shù): 4/20頁
文件大?。?/td> 299K
代理商: AD7790
AD7790
SPECIFICATIONS (continued)
1
Rev. 0 | Page 4 of 20
Parameter
REFERENCE INPUT (continued)
Normal Mode Rejection
2
@ 50 Hz, 60 Hz
@ 50 Hz
@ 60 Hz
Common Mode Rejection
@ DC
@ 50 Hz, 60 Hz
LOGIC INPUTS
All Inputs Except SCLK
2
V
INL
, Input Low Voltage
V
INH
, Input High Voltage
SCLK Only (Schmitt-Triggered Input)
2
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
2
V
OL
, Output Low Voltage
2
V
OH
, Output High Voltage
2
V
OL
, Output Low Voltage
2
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)
AD7790B
65
80
80
100
110
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
dB min
dB min
dB min
dB typ
dB typ
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
73 dB typ, 50 ± 1 Hz, 60 ± 1 Hz, FS[2:0] = 100
4
90 dB typ, 50 ± 1 Hz, FS[2:0] = 101
4
90 dB typ, 60 ± 1 Hz, FS[2:0] = 011
4
Input Range = ±2.5 V, AIN = 1 V
FS[2:0] = 100
4
50 ± 1 Hz (FS[2:0] = 101
4
), 60 ± 1 Hz (FS[2:0] = 011
4
)
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
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 15).
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