AD7713(RevC) 查看數據表（PDF） - Analog Devices
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AD7713 Datasheet PDF : 28 Pages
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AD7713–SPECIFICATIONS(AVDD = +5 V ؎ 5%; DVDD = +5 V ؎ 5%; REF IN(+) = +2.5 V; REF IN(–) = AGND;
MCLK IN = 2 MHz unless otherwise noted. All specifications TMIN to TMAX unless otherwise noted.)
Parameter
A, S Versions1 Units
Conditions/Comments
STATIC PERFORMANCE
No Missing Codes
Output Noise
Integral Nonlinearity
Positive Full-Scale Error2, 3
Full-Scale Drift5
Unipolar Offset Error2
Unipolar Offset Drift5
Bipolar Zero Error2
Bipolar Zero Drift5
Gain Drift
Bipolar Negative Full-Scale Error2
Bipolar Negative Full-Scale Drift5
24
22
18
15
12
See Tables I & II
± 0.0015
See Note 4
1
0.3
See Note 4
0.5
0.25
See Note 4
0.5
0.25
2
± 0.004
1
0.3
Bits min
Bits min
Bits min
Bits min
Bits min
% of FSR max
µV/°C typ
µV/°C typ
µV/°C typ
µV/°C typ
µV/°C typ
µV/°C typ
ppm/°C typ
% of FSR max
µV/°C typ
µV/°C typ
Guaranteed by Design. For Filter Notches ≤ 12 Hz
For Filter Notch = 20 Hz
For Filter Notch = 50 Hz
For Filter Notch = 100 Hz
For Filter Notch = 200 Hz
Depends on Filter Cutoffs and Selected Gain
Filter Notches ≤ 12 Hz; Typically ±0.0003%
For Gains of 1, 2
For Gains of 4, 8, 16, 32, 64, 128
For Gains of 1, 2
For Gains of 4, 8, 16, 32, 64, 128
For Gains of 1, 2
For Gains of 4, 8, 16, 32, 64, 128
Typically ± 0.0006%
For Gains of 1, 2
For Gains of 4, 8, 16, 32, 64, 128
ANALOG INPUTS
Input Sampling Rate, fS
Normal-Mode 50 Hz Rejection6
Normal-Mode 60 Hz Rejection6
AIN1, AIN27
Input Voltage Range8
Common-Mode Rejection (CMR)
Common-Mode 50 Hz Rejection6
Common-Mode 60 Hz Rejection6
Common-Mode Voltage Range10
DC Input Leakage Current @ +25°C
TMIN to TMAX
Sampling Capacitance6
AIN3
Input Voltage Range
Gain Error11
Gain Drift
Offset Error11
Input Impedance
See Table III
100
100
0 to +VREF9
± VREF
100
150
150
AGND to AVDD
10
1
20
0 to + 4 × VREF
± 0.05
1
4
30
dB min
dB min
For Filter Notches of 2 Hz, 5 Hz, 10 Hz, 25 Hz, 50 Hz, ± 0.02 × fNOTCH
For Filter Notches of 2 Hz, 6 Hz, 10 Hz, 30 Hz, 60 Hz, ±0.02 × fNOTCH
V max
V max
dB min
dB min
dB min
V min to V max
pA max
nA max
pF max
For Normal Operation. Depends on Gain Selected.
Unipolar Input Range (B/U Bit of Control Register = 1)
Bipolar Input Range (B/U Bit of Control Register = 0)
At DC
For Filter Notches of 2 Hz, 5 Hz, 10 Hz, 25 Hz, 50 Hz, ±0.02 × fNOTCH
For Filter Notches of 2 Hz, 6 Hz, 10 Hz, 30 Hz, 60 Hz, ±0.02 × fNOTCH
V max
% typ
ppm/°C typ
mV max
kΩ min
For Normal Operation. Depends on Gain Selected
Additional Error Contributed by Resistor Attenuator
Additional Drift Contributed by Resistor Attenuator
Additional Error Contributed by Resistor Attenuator
NOTES
1Temperature range is as follows: A Version, –40°C to +85°C; S Version, –55°C to +125°C.
2Applies after calibration at the temperature of interest.
3Positive full-scale error applies to both unipolar and bipolar input ranges.
4These errors will be of the order of the output noise of the part as shown in Table I after system calibration. These errors will be 20 µV typical after self-calibration
or background calibration.
5Recalibration at any temperature or use of the background calibration mode will remove these drift errors.
6These numbers are guaranteed by design and/or characterization.
7The AIN1 and AIN2 analog inputs presents a very high impedance dynamic load which varies with clock frequency and input sample rate. The maximum
recommended source resistance depends on the selected gain.
8The analog input voltage range on the AIN1(+) and AIN2(+) inputs is given here with respect to the voltage on the AIN1(–) and AIN2 (–) inputs. The input
voltage range on the AIN3 input is with respect to AGND. The absolute voltage on the AIN1 and AIN2 inputs should not go more positive than A VDD + 30 mV or
more negative than AGND – 30 mV.
9VREF = REF IN(+) – REF IN(–).
10This common-mode voltage range is allowed provided that the input voltage on AIN(+) and AIN(–) does not exceed A VDD + 30 mV and AGND – 30 mV.
11This error can be removed using the system calibration capabilities of the AD7713. This error is not removed by the AD7713’s self-calibration feature. The offset
drift on the AIN3 input is four times the value given in the Static Performance section.
–2–
REV. C
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