AD7731BRUZ Ver la hoja de datos (PDF) - Analog Devices
Número de pieza
componentes Descripción
Fabricante
AD7731BRUZ Datasheet PDF : 44 Pages
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Parameter
B Version1
Absolute/Common-Mode Voltage13
Reference Input
REF IN(+) – REF IN (–) Voltage
REF IN(+) – REF IN (–) Voltage
Reference DC Input Current
Reference DC Input Current
Absolute/Common-Mode Voltage14
NO REF Trigger Voltage
AGND + 1.2 V
AVDD – 0.95 V
+2.5
+5
5.5
10
AGND – 30 mV
AVDD + 30 mV
0.3
0.65
LOGIC INPUTS
Input Current
All Inputs Except SCLK and MCLK IN
VINL, Input Low Voltage
VINL, Input Low Voltage
VINH, Input High Voltage
SCLK Only (Schmitt Triggered Input)
VT+
VT+
VT–
VT–
VT+ – VT–
VT+ – VT–
MCLK IN Only
VINL, Input Low Voltage
VINL, Input Low Voltage
VINH, Input High Voltage
VINH, Input High Voltage
± 10
0.8
0.4
2.0
1.4/3
0.95/2.5
0.8/1.4
0.4/1.1
0.4/0.85
0.4/0.8
0.8
0.4
3.5
2.5
LOGIC OUTPUTS (Including MCLK OUT)
VOL, Output Low Voltage
0.4
VOL, Output Low Voltage
0.4
VOH, Output High Voltage
4.0
VOH, Output High Voltage
DVDD – 0.6 V
Floating State Leakage Current
Floating State Output Capacitance3
TRANSDUCER BURNOUT17
AIN1(+) Current
AIN1(–) Current
Initial Tolerance @ 25°C
Drift
SYSTEM CALIBRATION
Positive Full-Scale Calibration Limit18
± 10
6
–100
100
± 10
0.1
1.05 × FS
Negative Full-Scale Calibration Limit18
Offset Calibration Limit19
Input Span19
POWER REQUIREMENTS
Power Supply Voltages
AVDD – AGND Voltage
DVDD Voltage
Power Supply Currents
AVDD Current (Normal Mode)
DVDD Current (Normal Mode)
DVDD Current (Normal Mode)
AVDD + DVDD Current (Standby Mode)
Power Dissipation
Normal Mode
Standby Mode
–1.05 × FS
–1.05 × FS
0.8 × FS
2.1 × FS
+5
+2.7 to +5.25
10.3
1.7
3.2
25
67.5
125
REEVV..A0
Units
V min
V max
V nom
V nom
µA max
µA max
V min
V max
V min
V max
µA max
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 max
V min
V min
V max
V max
V min
V min
µA max
pF typ
nA nom
nA nom
% typ
%/°C typ
V max
V max
V min
V min
V max
V nom
V min to V max
mA max
mA max
mA max
µA max
mW max
µW max
–3–
Conditions/Comments
AD7731
HIREF Bit of Mode Register = 0
HIREF Bit of Mode Register = 1
HIREF Bit of Mode Register = 0
HIREF Bit of Mode Register = 1
NO REF Bit Active If VREF Below This Voltage
NO REF Bit Inactive If VREF Above This Voltage
DVDD = +5 V
DVDD = +3 V
DVDD = +5 V
DVDD = +3 V
DVDD = +5 V
DVDD = +3 V
DVDD = +5 V
DVDD = +3 V
DVDD = +5 V
DVDD = +3 V
DVDD = +5 V
DVDD = +3 V
ISINK = 800 µA Except for MCLK OUT15.
VDD16 = +5 V
ISINK = 100 µA Except for MCLK OUT15.
VDD16 = +3 V
ISOURCE = 200 µA Except for MCLK OUT15.
VDD16 = +5 V
ISOURCE = 100 µA Except for MCLK OUT15.
VDD16 = +3 V
FS Is the Nominal Full-Scale Voltage (20 mV,
40 mV, 80 mV, 160 mV, 320 mV, 640 mV, 1.28 V)
With AGND = 0 V
External MCLK. Digital I/Ps = 0 V or DVDD
DVDD of 2.7 V to 3.3 V
DVDD of 4.75 V to 5.25 V
Typically 10 µA. External MCLK IN = 0 V or DVDD
AVDD = DVDD = +5 V. Digital I/Ps = 0 V or DVDD
Typically 50 µW. External MCLK IN = 0 V or DVDD
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