AD9857 查看數據表（PDF） - Analog Devices
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AD9857 Datasheet PDF : 40 Pages
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AD9857
Parameter
MODULATOR CHARACTERISTICS (65 MHz AOUT)
(Input data: 2.5 MS/s, QPSK, 4× oversampled, inverse SINC
filter ON, inverse CIC ON)
I/Q Offset
Error Vector Magnitude
INVERSE SINC FILTER (variation in gain from DC to 80 MHz,
inverse SINC filter ON)
SPURIOUS POWER (off channel, measured in equivalent
bandwidth), Full-Scale Output
6.4 MHz Bandwidth
3.2 MHz Bandwidth
1.6 MHz Bandwidth
0.8 MHz Bandwidth
0.4 MHz Bandwidth
0.2 MHz Bandwidth
SPURIOUS POWER (Off channel, measured in equivalent
bandwidth), Output Attenuated 18 dB
Relative to Full Scale
6.4 MHz Bandwidth
3.2 MHz Bandwidth
1.6 MHz Bandwidth
0.8 MHz Bandwidth
0.4 MHz Bandwidth
0.2 MHz Bandwidth
TIMING CHARACTERISTICS
Serial Control Bus
Maximum Frequency
Minimum Clock Pulse Width Low (tPWL)
Minimum Clock Pulse Width High (tPWH)
Maximum Clock Rise/Fall Time
Minimum Data Setup Time (tDS)
Minimum Data Hold Time (tDH)
Maximum Data Valid Time (tDV)
Wake-Up Time1
Minimum RESET Pulse Width High (tRH)
Minimum CS Setup Time
CMOS LOGIC INPUTS
Logic 1 Voltage
Logic 0 Voltage
Logic 1 Current
Logic 0 Current
Input Capacitance
CMOS LOGIC OUTPUTS (1 mA LOAD)
Logic 1 Voltage
Logic 0 Voltage
Temp
25°C
25°C
25°C
25°C
25°C
25°C
25°C
25°C
25°C
25°C
25°C
25°C
25°C
25°C
25°C
25°C
25°C
25°C
25°C
25°C
25°C
25°C
25°C
25°C
25°C
25°C
25°C
25°C
25°C
25°C
25°C
25°C
Test Level Min Typ Max
IV
55
65
IV
0.4
1
V
±0.1
IV
−65
IV
−67
IV
−69
IV
−69
IV
−70
IV
−72
IV
−51
IV
−54
IV
−56
IV
−59
IV
−62
IV
−63
I
10
I
30
I
30
I
1
I
30
I
0
I
35
I
1
I
5
I
40
IV
2.0
IV
0.8
I
5
I
5
V
3
I
2.7
I
0.4
Unit
dB
%
dB
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
MHz
ns
ns
ms
ns
ns
ns
ms
SYSCLK22Cycles
ns
V
V
µA
µA
pF
V
V
Rev. C | Page 6 of 40
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