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AD7827BR 数据表(PDF) 2 Page - Analog Devices

部件名 AD7827BR
功能描述  3 V/5 V, 1 MSPS, 8-Bit, Serial Interface Sampling ADC
Download  12 Pages
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制造商  AD [Analog Devices]
网页  http://www.analog.com
标志 AD - Analog Devices

AD7827BR 数据表(HTML) 2 Page - Analog Devices

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–2–
REV. 0
AD7827–SPECIFICATIONS
(VDD = +3 V
10%, VDD = +5 V
10%, GND = 0 V, VREFIN/REFOUT = 2.5 V. All
specifications –40 C to +105 C unless otherwise noted.)
Parameter
Version B
Units
Test Conditions/Comments
DYNAMIC PERFORMANCE
fIN = 30 kHz; fSAMPLE = 1 MHz
Signal-to-(Noise + Distortion) Ratio
1
48
dB min
Total Harmonic Distortion
1
–55
dB max
Peak Harmonic or Spurious Noise
1
–55
dB max
Intermodulation Distortion
1
fa = 29.1 kHz; fb = 29.9 kHz
2nd Order Terms
–65
dB typ
3rd Order Terms
–65
dB typ
DC ACCURACY
Resolution
8
Bits
Integral Nonlinearity (INL)
1
±0.5
LSB max
Differential Nonlinearity (DNL)
1
±0.5
LSB max
Offset Error
1
±1.5
LSB max
Gain Error
1
±2
LSB max
Minimum Resolution for Which
No Missing Codes are Guaranteed
8
Bits
ANALOG INPUT
2
Input Voltage Range
0
V min
VDD = 5 V
2.5
V max
0
V min
VDD = 3 V
2
V max
Input Leakage Current
±1
µA max
Input Capacitance
10
pF max
REFERENCE INPUT
VREFIN/REFOUT Input Voltage Range
2.55
V max
2.45
V min
Input Current
±1
µA typ
±50
µA max
LOGIC INPUTS
CONVST, SCLK
VINH, Input High Voltage
2.4
V min
VDD = 5 V ± 10%
VINL, Input Low Voltage
0.8
V max
VDD = 5 V
± 10%
VINH, Input High Voltage
2.0
V min
VDD = 3 V
± 10%
VINL, Input Low Voltage
0.4
V max
VDD = 3 V ± 10%
Input Current, IINH
±1
µA max
Typically 10 nA, VIN = 0 V or VDD
Input Capacitance
10
pF max
LOGIC OUTPUTS
DOUT, RFS
VOH, Output High Voltage
ISOURCE = 200
µA
4
V max
VDD = 5 V
± 10%
2.4
V min
VDD = 3 V ± 10%
VOL, Output Low Voltage
ISINK = 200
µA
0.4
V max
VDD = 5 V
± 10%
0.2
V min
VDD = 3 V ± 10%
High Impedance Leakage Current
±1
µA max
High Impedance Capacitance
15
pF max
CONVERSION RATE
Conversion Time
420
ns max
Track/Hold Acquisition Time
200
ns max


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