AD7908(RevA) 查看數據表（PDF） - Analog Devices
零件编号
产品描述 (功能)
生产厂家
AD7908
(Rev.:RevA)
(Rev.:RevA)
Analog Devices
AD7908 Datasheet PDF : 24 Pages
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AD7908/AD7918/AD7928
AD7928–SPECIFICATIONS (AVDD = VDRIVE = 2.7 V to 5.25 V, REFIN = 2.5 V, fSCLK = 20 MHz, TA = TMIN to TMAX, unless
otherwise noted.)
Parameter
B Version2
Unit
Test Conditions/Comments
DYNAMIC PERFORMANCE
Signal-to-(Noise + Distortion) (SINAD)2
Signal-to-Noise Ratio (SNR)2
Total Harmonic Distortion (THD)2
Peak Harmonic or Spurious Noise
(SFDR)2
Intermodulation Distortion (IMD)2
Second Order Terms
Third Order Terms
Aperture Delay
Aperture Jitter
Channel-to-Channel Isolation2
Full Power Bandwidth
DC ACCURACY2
Resolution
Integral Nonlinearity
Differential Nonlinearity
0 V to REFIN Input Range
Offset Error
Offset Error Match
Gain Error
Gain Error Match
0 V to 2 ϫ REFIN Input Range
Positive Gain Error
Positive Gain Error Match
Zero Code Error
Zero Code Error Match
Negative Gain Error
Negative Gain Error Match
70
69
70
–77
–73
–78
–76
–90
–90
10
50
–85
8.2
1.6
12
±1
–0.9/+1.5
±8
±0.5
±1.5
±0.5
±1.5
±0.5
±8
±0.5
±1
±0.5
dB min
dB min
dB min
dB max
dB max
dB max
dB max
dB typ
dB typ
ns typ
ps typ
dB typ
MHz typ
MHz typ
Bits
LSB max
LSB max
LSB max
LSB max
LSB max
LSB max
LSB max
LSB max
LSB max
LSB max
LSB max
LSB max
fIN = 50 kHz Sine Wave, fSCLK = 20 MHz
@5V
@ 3 V Typically 70 dB
@ 5 V Typically –84 dB
@ 3 V Typically –77 dB
@ 5 V Typically –86 dB
@ 3 V Typically –80 dB
fa = 40.1 kHz, fb = 41.5 kHz
fIN = 400 kHz
@ 3 dB
@ 0.1 dB
Guaranteed No Missed Codes to 12 Bits
Straight Binary Output Coding
Typically ±0.5 LSB
–REFIN to +REFIN Biased about REFIN with
Twos Complement Output Coding
Typically ±0.8 LSB
ANALOG INPUT
Input Voltage Ranges
DC Leakage Current
Input Capacitance
0 to REFIN
0 to 2 ϫ REFIN
±1
20
V
V
µA max
pF typ
RANGE Bit Set to 1
RANGE Bit Set to 0, AVDD/VDRIVE = 4.75 V to 5.25 V
REFERENCE INPUT
REFIN Input Voltage
DC Leakage Current
REFIN Input Impedance
LOGIC INPUTS
Input High Voltage, VINH
Input Low Voltage, VINL
Input Current, IIN
Input Capacitance, CIN3
LOGIC OUTPUTS
Output High Voltage, VOH
Output Low Voltage, VOL
Floating-State Leakage Current
Floating-State Output Capacitance3
Output Coding
2.5
V
±1
µA max
36
k⍀ typ
0.7 ϫ VDRIVE
0.3 ϫ VDRIVE
±1
10
V min
V max
µA max
pF max
VDRIVE – 0.2
0.4
V min
V max
±1
µA max
10
pF max
Straight (Natural) Binary
Twos Complement
±1% Specified Performance
fSAMPLE = 1 MSPS
Typically 10 nA, VIN = 0 V or VDRIVE
ISOURCE = 200 µA, AVDD = 2.7 V to 5.25 V
ISINK = 200 µA
Coding Bit Set to 1
Coding Bit Set to 0
–6–
REV. A
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