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AD9957 Scheda tecnica(PDF) 5 Page - Analog Devices

Il numero della parte AD9957
Spiegazioni elettronici  1 GSPS Quadrature Digital Upconverter with 18-Bit IQ Data Path and 14-Bit DAC
Download  60 Pages
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Produttore elettronici  AD [Analog Devices]
Homepage  http://www.analog.com
Logo AD - Analog Devices

AD9957 Scheda tecnica(HTML) 5 Page - Analog Devices

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AD9957
Rev. 0 | Page 5 of 60
Parameter
Test Conditions/Comments
Min
Typ
Max
Unit
NOISE SPECTRAL DENSITY (NSD)
Single Tone
fOUT = 20.1 MHz
−167
dBm/Hz
fOUT = 98.6 MHz
−162
dBm/Hz
fOUT = 201.1 MHz
−157
dBm/Hz
fOUT = 397.8 MHz
−151
dBm/Hz
TWO-TONE INTERMODULATION DISTORTION (IMD)
I/Q rate = 62.2 MSPS; 16× interpolation
fOUT = 25 MHz
−82
dBc
fOUT = 50 MHz
−78
dBc
fOUT = 100 MHz
−73
dBc
MODULATOR CHARACTERISTICS
Input Data
Error Vector Magnitude
2.5 Msymbols/s, QPSK, 4× oversampled
0.53
%
270.8333 ksymbols/s, GMSK, 32×
oversampled
0.77
%
2.5 Msymbols/s 256-QAM, 4×
oversampled
0.35
%
WCDMA − FDD (TM1), 3.84 MHz Bandwidth,
5 MHz Channel Spacing
Adjacent Channel Leakage Ratio (ACLR)
IF = 143.88 MHz
−78
dBc
Carrier Feedthrough
−78
dBc
SERIAL PORT TIMING CHARACTERISTICS
Maximum SCLK Frequency
70
Mbps
Minimum SCLK Pulse Width
Low
4
ns
High
4
ns
Maximum SCLK Rise/Fall Time
2
ns
Minimum Data Setup Time to SCLK
5
ns
Minimum Data Hold Time to SCLK
0
ns
Maximum Data Valid Time in Read Mode
11
ns
IO_UPDATE/PS0/PS1/PS2/RT TIMING CHARACTERISTICS
Minimum Pulse Width
High
1
SYNC_CLK
cycle
Minimum Setup Time to SYNC_CLK
2
ns
Minimum Hold Time to SYNC_CLK
0
ns
IQ INPUT TIMING CHARACTERISTICS
Maximum PDCLK Frequency
250
MHz
Minimum IQ Data Setup Time to PDCLK
2
ns
Minimum IQ Data Hold Time to PDCLK
1
ns
Minimum TX_ENABLE Setup Time to PDCLK
2
ns
Minimum TX_ENABLE Hold Time to PDCLK
1
ns
Minimum TX_ENABLE Pulse Width
MISCELLANEOUS TIMING CHARACTERISTICS
Wake-Up Time3
1
Fast Recovery Mode
8
SYSCLK cycles
Full Sleep Mode
150
μs
Minimum Reset Pulse Width High
5
SYSCLK cycles4
DATA LATENCY (PIPELINE DELAY)
Data Latency Single Tone Mode
Frequency, Phase, Amplitude-to-DAC Output
Matched latency enabled
91
SYSCLK cycles
Frequency, Phase-to-DAC Output
Matched latency disabled
79
SYSCLK cycles


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