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AD7475BR 数据表(PDF) 3 Page - Analog Devices

部件名 AD7475BR
功能描述  1 MSPS,12-Bit ADCs
Download  24 Pages
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制造商  AD [Analog Devices]
网页  http://www.analog.com
标志 AD - Analog Devices

AD7475BR 数据表(HTML) 3 Page - Analog Devices

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AD7475/AD7495
Rev. B | Page 3 of 24
AD7475 SPECIFICATIONS
VDD = 2.7 V to 5.25 V, VDRIVE = 2.7 V to 5.25 V, REF IN = 2.5 V, fSCLK = 20 MHz, TA = TMIN to TMAX, unless otherwise noted.
Table 1.
Parameter
A Version1
B Version1
Unit
Test Conditions/Comments
DYNAMIC PERFORMANCE
Signal-to-Noise and Distortion
Ratio (SINAD)
68
68
dB min
fIN = 300 kHz sine wave, fSAMPLE = 1 MSPS
Total Harmonic Distortion (THD)
−75
−75
dB max
fIN = 300 kHz sine wave, fSAMPLE = 1 MSPS
Peak Harmonic or Spurious Noise
(SFDR)
−76
−76
dB max
fIN = 300 kHz sine wave, fSAMPLE = 1 MSPS
Intermodulation Distortion (IMD)
Second-Order Terms
−78
−78
dB typ
Third-Order Terms
−78
−78
dB typ
Aperture Delay
10
10
ns typ
Aperture Jitter
50
50
ps typ
Full Power Bandwidth
8.3
8.3
MHz typ
@ 3 dB
Full Power Bandwidth
1.3
1.3
MHz typ
@ 0.1 dB
DC ACCURACY
Resolution
12
12
Bits
Integral Nonlinearity
±1.5
±1
LSB max
@ 5 V (typ @ 3 V)
±0.5
±0.5
LSB typ
@ 25°C
Differential Nonlinearity
+1.5/−0.9
+1.5/−0.9
LSB max
@ 5 V guaranteed no missed codes to
12 bits (typ @ 3 V)
±0.5
±0.5
LSB typ
@ 25°C
Offset Error
±8
±8
LSB max
Typically ±2.5 LSB
Gain Error
±3
±3
LSB max
ANALOG INPUT
Input Voltage Ranges
0 to REF IN
V
DC Leakage Current
±1
±1
μA max
Input Capacitance
20
20
pF typ
REFERENCE INPUT
REF IN Input Voltage Range
2.5
2.5
V
±1% for specified performance
DC Leakage Current
±1
±1
μA max
Input Capacitance
20
20
pF typ
LOGIC INPUTS
Input High Voltage, VINH
VDRIVE − 1
VDRIVE − 1
V min
Input Low Voltage, VINL
0.4
0.4
V max
Input Current, IIN
±1
±1
μA max
Typically 10 nA, VIN = 0 V or VDRIVE
Input Capacitance, CIN2
10
10
pF max
LOGIC OUTPUTS
Output High Voltage, VOH
VDRIVE − 0.2
V min
ISOURCE = 200 μA; VDRIVE = 2.7 V to 5.25 V
Output Low Voltage, VOL
0.4
0.4
V max
ISINK = 200 μA
Floating-State Leakage Current
±10
±10
μA max
Floating-State Output Capacitance
10
10
pF max
Output Coding
Straight (Natural) Binary
CONVERSION RATE
Conversion Time
800
800
ns max
16 SCLK cycles with SCLK at 20 MHz
Track-and-Hold Acquisition Time
300
300
ns max
Sine wave input
325
325
ns max
Full-scale step input
Throughput Rate
1
1
MSPS max
See the Serial Interface section


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