AD7718BRU View Datasheet(PDF) - Analog Devices
Part Name
Description
Manufacturer
AD7718BRU Datasheet PDF : 44 Pages
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AD7708/AD7718
Parameter
B Grade
Unit
Test Conditions
LOGIC INPUTS (Continued)
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
Input Capacitance
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
± 10
–70
10
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
µA max
µA max
pF typ
DVDD = 5 V
DVDD = 5 V
DVDD = 5 V
DVDD = 3 V
DVDD = 3 V
DVDD = 3 V
DVDD = 5 V
DVDD = 5 V
DVDD = 3 V
DVDD = 3 V
Logic Input = DVDD
Logic Input = DGND, Typical –40 µA @ 5 V
and –20 µA at 3 V
All Digital Inputs
LOGIC OUTPUTS (Excluding XTAL2)5
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
SYSTEM CALIBRATION2
Full-Scale Calibration Limit
Zero-Scale Calibration Limit
Input Span
DVDD – 0.6
0.4
4
0.4
± 10
± 10
Binary
Offset Binary
1.05 × FS
–1.05 × FS
0.8 × FS
2.1 × FS
V min
V max
V min
V max
µA max
pF typ
V max
V min
V min
V max
DVDD = 3 V, ISOURCE = 100 µA
DVDD = 3 V, ISINK = 100 µA
DVDD = 5 V, ISOURCE = 200 µA
DVDD = 5 V, ISINK = 1.6 mA
Unipolar Mode
Bipolar Mode
START-UP TIME
From Power-On
From Power-Down Mode
300
ms typ
1
ms typ
Oscillator Enabled
300
ms typ
Oscillator Powered Down
POWER REQUIREMENTS
Power Supply Voltages
AVDD–AGND
DVDD–DGND
DIDD (Normal Mode)
AIDD (Normal Mode)
DIDD (Power-Down Mode)
AIDD (Power-Down Mode)
Power Supply Rejection (PSR)
Chop Disabled
Chop Enabled
AVDD and DVDD can be operated independently of each other.
2.7/3.6
V min/max
AVDD = 3 V nom
4.75/5.25
V min/max
AVDD = 5 V nom
2.7/3.6
V min/max
DVDD = 3 V nom
4.75/5.25
V min
DVDD = 5 V nom
0.55
mA max
DVDD = 3 V, 0.43 mA typ
0.65
mA max
DVDD = 5 V, 0.5 mA typ
1.1
mA max
AVDD = 3 V or 5 V, 0.85 mA typ
10
µA max
DVDD = 3 V, 32.768 kHz Osc. Running
2
µA max
DVDD = 3 V, Oscillator Powered Down
30
µA max
DVDD = 5 V, 32.768 kHz Osc. Running
8
µA max
DVDD = 5 V, Oscillator Powered Down
1
µA max
AVDD = 3 V or 5 V
Input Range = ± 2.56 V, AIN = 1 V
70
dB min
95 dB typ
100
dB typ
NOTES
1Temperature range is –40°C to +85°C.
2Not production tested, guaranteed by design and/or characterization data at release.
3Following a self-calibration this error will be in the order of the noise for the programmed gain and update selected. A system calibration will completely remove this error.
4Recalibration at any temperature will remove these errors.
5I/O Port Logic Levels are with respect to AVDD and AGND.
Specifications are subject to change without notice.
REV. 0
–5–
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