AD7790 데이터 시트보기 (PDF) - Analog Devices
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AD7790 Datasheet PDF : 20 Pages
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AD7790
Data Sheet
SPECIFICATIONS (continued)1
Parameter
REFERENCE INPUT (continued)
Normal Mode Rejection2
@ 50 Hz, 60 Hz
@ 50 Hz
@ 60 Hz
Common Mode Rejection
@ DC
@ 50 Hz, 60 Hz
LOGIC INPUTS
All Inputs Except SCLK2
VINL, Input Low Voltage
VINH, Input High Voltage
SCLK Only (Schmitt-Triggered Input)2
VT(+)
VT(–)
VT(+) – VT(–)
VT(+)
VT(–)
VT(+) - VT(–)
Input Currents
Input Capacitance
LOGIC OUTPUTS
VOH, Output High Voltage2
VOL, Output Low Voltage2
VOH, Output High Voltage2
VOL, Output Low Voltage2
Floating-State Leakage Current
Floating-State Output Capacitance
Data Output Coding
POWER REQUIREMENTS5
Power Supply Voltage
VDD – GND
Power Supply Currents
IDD Current6
IDD (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
VDD – 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] = 1004
90 dB typ, 50 ± 1 Hz, FS[2:0] = 1014
90 dB typ, 60 ± 1 Hz, FS[2:0] = 0114
Input Range = ±2.5 V, AIN = 1 V
FS[2:0] = 1004
50 ± 1 Hz (FS[2:0] = 1014), 60 ± 1 Hz (FS[2:0] = 0114)
VDD = 5 V
VDD = 3 V
VDD = 3 V or 5 V
VDD = 5 V
VDD = 5 V
VDD = 5 V
VDD = 3 V
VDD = 3 V
VDD = 3 V
VIN = VDD or GND
All Digital Inputs
VDD = 3 V, ISOURCE = 100 µA
VDD = 3 V, ISINK = 100 µA
VDD = 5 V, ISOURCE = 200 µA
VDD = 5 V, ISINK = 1.6 mA
65 µA typ, VDD = 3.6 V, Unbuffered Mode
130 µA typ, VDD = 3.6 V, Buffered Mode
73 µA typ, VDD = 5.25 V, Unbuffered Mode
145 µA typ, VDD = 5.25 V, Buffered Mode
5 Digital inputs equal to VDD or GND.
6 The current consumption can be further reduced by using the ADC in one of the low power modes (see Table 15).
Rev. A | Page 4 of 20
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