AD7783 Просмотр технического описания (PDF) - Analog Devices
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AD7783 Datasheet PDF : 12 Pages
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AD7783
Parameter
AD7783B
Unit
Test Conditions
LOGIC INPUTS
All Inputs Except SCLK and XTAL12
VINL, Input Low Voltage
VINH, Input High Voltage
SCLK Only (Schmitt-Triggered Input)2
VT(+)
VT(–)
VT(+) – VT(–)
VT(+)
VT(–)
VT(+) – VT(–)
XTAL1 Only2
VINL, Input Low Voltage
VINH, Input High Voltage
VINL, Input Low Voltage
VINH, Input High Voltage
Input Currents
0.8
0.4
2.0
1.4/2
0.8/1.4
0.3/0.85
0.95/2
0.4/1.1
0.3/0.85
0.8
3.5
0.4
2.5
±1
–70
Input Capacitance
10
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
V max
V min
V max
V min
mA max
mA max
pF typ
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
VDD = 5 V
VDD = 5 V
VDD = 3 V
VDD = 3 V
VIN = VDD
VIN = GND, Typically –40 mA at 5 V and
–20 mA at 3 V
All Digital Inputs
LOGIC OUTPUTS (Excluding XTAL2)
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
VDD – 0.6
0.4
4
0.4
± 10
± 10
Offset Binary
V min
V max
V min
V max
mA max
pF typ
VDD = 3 V, ISOURCE = 100 mA
VDD = 3 V, ISINK = 100 mA
VDD = 5 V, ISOURCE = 200 mA
VDD = 5 V, ISINK = 1.6 mA
START-UP TIME
From Power-On
300
ms typ
POWER REQUIREMENTS
Power Supply Voltage
VDD – GND
Power Supply Currents
IDD Current (Normal Mode)4
IDD (Power-Down Mode, CS = 1)
2.7/3.6
4.75/5.25
1.5
1.7
9
24
V min/V max
V min/V max
mA max
mA max
mA max
mA max
VDD = 3 V nom
VDD = 5 V nom
VDD = 3 V, 1.3 mA typ
VDD = 5 V, 1.5 mA typ
VDD = 3 V, 6 mA typ
VDD = 5 V, 20 mA typ
NOTES
1Temperature range –40∞C to +85∞C.
2Guaranteed by design and/or characterization data on production release.
3When a 28.8 kHz crystal is used, normal-mode rejection is improved so that the rejection equals 75 dB at 50 Hz ± 1 Hz and equals 66 dB at 60 Hz ± 1 Hz.
4Normal mode refers to the case where the ADC is running.
Specifications subject to change without notice.
REV. C
–3–
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