參數(shù)資料
型號(hào)： AFE8201PFBT
英文描述： IF Analog-to-Digital Converter with Digital Downconverter
中文描述： 中頻模擬到數(shù)字轉(zhuǎn)換器與數(shù)字下變頻器
文件頁(yè)數(shù)： 3/20頁(yè)
文件大?。?/td> 220K
代理商： AFE8201PFBT
"#$%&'
SBWS016A OCTOBER 2003 REVISED JANUARY 2005
www.ti.com
3
AUXILIARY DAC CHARACTERISTICS
All specifications at +25
°
C, AVDD = +3.3V, and DVDD = +1.8V, unless otherwise noted.
PARAMETER
CONDITIONS
MIN
TYP
12
0.0
2.75
MAX
UNIT
bits
V
V
k
μ
s
% of FSR
% of FSR
LSB
LSB
dB
Resolution
Output voltage range
Input code 0x000
Input code 0xFFF
Output impedance
Settling time
1
to 0.1% FSR
10
Offset
Gain error
Differential nonlinearity, DNL
Integral nonlinearity, INL
Power-supply rejection ratio, PSRR
±
1
±
5
±
0.5
±
2
60
DC
performance
Ensured monotonic
After correcting for gain and offset errors
Input code 0x400, AVDD = 3.15VDC to 3.45VDC
RECEIVE CHANNEL CHARACTERISTICS
All specifications at +25
°
C, fS = 80MSPS, AVDD = +3.3V, DVDD = +1.8V, IOVDD = +3.3V, Gain = 1, Decimation Ratio = 80, Internal Digital
Filter Bandwidth = 264kHz, and Input Signal = 10.7MHz, unless otherwise noted.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNIT
DC Accuracy
Input impedance
Differential nonlinearity, DNL
6.25
±
0.0122
±
0.012
3
1
1.0
0.875
0.75
0.625
0.5
0.375
0.25
k
0.0244
+0.0244
%FSR
Integral nonlinearity, INL
Offset error
Gain error
0.0244
+0.0244
%FSR
mV
%FS
V
V
V
V
V
V
V
Gain = 1
Gain = 1.14
Gain = 1.33
Gain = 1.6
Gain = 2.0
Gain = 2.67
Gain = 4.0
Full-scale input level (peak differential)
Gain change settling time
Power-supply rejection ratio, PSRR
References
Negative reference, VREFN
Number of samples to achieve rated accuracy
AVDD = 3.15VDC to 3.45VDC
2
70
Samples
dB
1.1
1.25
1.4
V
Positive reference, VREFP
Common-mode voltage, VCM
AC Performance
2.1
2.25
1.8
2.4
V
V
Spurious-free dynamic range, SFDR
Input 455kHz, 1dBFS
Input 10.7MHz, 1dBFS
Input 10.7MHz, 1dBFS
Input 455kHz, 1dBFS
Input 10.7MHz, 1dBFS
In 3kHz bandwidth, 1dBFS, 10.7MHz, 20kHz from fundamental
76
86
80
75
74
102
2
0.2
dBc
dBc
dBc
dB
dB
dB
ns
ps
76
2nd-order harmonic, HD2
Signal-to-noise ratio, SNR
70
Aperture delay
Aperture uncertainty
Power Supply
Analog supply voltage, AVDD
Digital supply voltage, DVDD
Output driver supply voltage, IOVDD
3.15
1.71
3.15
3.3
1.8
3.3
3.45
1.89
3.45
V
V
V
Power dissipation
Normal operation
Power-down
490
20
7
72
103
570
mW
mW
mA
mA
mA
Digital I/O supply current
Digital supply current
Analog supply current
P
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