7812 查看數據表（PDF） - Analog Devices
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7812 Datasheet PDF : 20 Pages
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AD7811/AD7812–SPECIFICATIONS (VDD = +2.7 V to +3.6 V, VDD = +5 V ؎ 10%, GND = 0 V, VREF = +VDD
[EXT]. All specifications –40؇C to +105؇C unless otherwise noted.)
Parameter
DYNAMIC PERFORMANCE
Signal to (Noise + Distortion) Ratio1
Total Harmonic Distortion (THD)1
Peak Harmonic or Spurious Noise1
Intermodulation Distortion1, 2
Second Order Terms
Third Order Terms
Channel-to-Channel Isolation1, 2
DC ACCURACY
Resolution
Minimum Resolution for Which
No Missing Codes are Guaranteed
Relative Accuracy1
Differential Nonlinearity1
Gain Error1
Gain Error Match1
Offset Error1
Offset Error Match1
Y Version
58
–66
–80
–67
–67
–80
10
10
±1
±1
±2
± 0.75
±2
± 0.75
Units
dB min
dB max
dB typ
dB max
dB max
dB typ
Bits
Bits
LSB max
LSB max
LSB max
LSB max
LSB max
LSB max
Test Conditions/Comments
fIN = 30 kHz Any Channel, fSAMPLE = 350 kHz
VREF Internal or External
fa = 29 kHz, fb = 30 kHz
fIN = 20 kHz
Any Channel
ANALOG INPUT
Input Voltage Range
Input Leakage Current2
Input Capacitance2
REFERENCE INPUTS2
VREF Input Voltage Range
Input Leakage Current
Input Capacitance
0
VREF
±1
20
1.2
VDD
±3
20
V min
V max
µA max
pF max
V min
V max
µA max
pF max
ON-CHIP REFERENCE
Reference Error
Temperature Coefficient
LOGIC INPUTS2
VINH, Input High Voltage
VINL, Input Low Voltage
VINH, Input High Voltage
VINL, Input Low Voltage
Input Current, IIN
Input Capacitance, CIN
LOGIC OUTPUTS
Output High Voltage, VOH
Output Low Voltage, VOL
High Impedance Leakage Current
High Impedance Capacitance
± 2.5
50
2.4
0.8
2
0.4
±1
8
4
2.4
0.4
±1
15
% max
ppm/°C typ
Nominal 2.5 V
V min
V max
V min
V max
µA max
pF max
VDD = 5 V ± 10%
VDD = 5 V ± 10%
VDD = 3 V ± 10%
VDD = 3 V ± 10%
Typically 10 nA, VIN = 0 V to VDD
V min
V min
V max
µA max
pF max
ISOURCE = 200 µA
VDD = 5 V ± 10%
VDD = 3 V ± 10%
ISINK = 200 µA
CONVERSION RATE
Conversion time
Track/Hold Acquisition Time1
2.3
µs max
200
ns max
–2–
REV. A
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