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AD9879 Datasheet(PDF) 2 Page - Analog Devices

No. de pieza AD9879
Descripción Electrónicos  Mixed-Signal Front End Set-Top Box, Cable Modem
Download  24 Pages
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Fabricante Electrónico  AD [Analog Devices]
Página de inicio  http://www.analog.com
Logo AD - Analog Devices

AD9879 Datasheet(HTML) 2 Page - Analog Devices

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REV. 0
–2–
AD9879–SPECIFICATIONS
Test
Parameter
Temp
Level
Min
Typ
Max
Unit
OSCIN AND XTAL CHARACTERISTICS
Frequency Range
Full
II
3
29
MHz
Duty Cycle
Full
II
35
50
65
%
Input Impedance
25ºC
III
100||3M
Ω||pF
MCLK Cycle to Cycle Jitter
25ºC
III
6
ps rms
Tx DAC CHARACTERISTICS
Resolution
N/A
N/A
12
Bits
Maximum Sample Rate
Full
II
232
MHz
Full-Scale Output Current
Full
II
4
10
20
mA
Gain Error (Using Internal Reference)
Full
II
–2.0
–1.0
+2.0
%FS
Offset Error
25ºC
III
±1.0
%FS
Reference Voltage (REFIO Level)
25ºC
III
1.23
V
Differential Nonlinearity (DNL)
25ºC
III
±2.5
LSB
Integral Nonlinearity (INL)
25ºC
III
±8
LSB
Output Capacitance
25ºC
III
5
pF
Phase Noise @ 1 kHz Offset, 42 MHz
Crystal and OSCIN Multiplier Enabled at 16
25ºC
III
–110
dBc/Hz
Output Voltage Compliance Range
Full
II
–0.5
+1.5
V
Wideband SFDR
5 MHz Analog Out, IOUT = 10 mA
Full
I
60.8
66.9
dBc
65 MHz Analog Out, IOUT = 10 mA
Full
I
44.0
46.2
dBc
Narrow-band SFDR (
±1 MHz Window):
5 MHz Analog Out, IOUT = 10 mA
Full
I
65.4
72.3
dBc
Tx MODULATOR CHARACTERISTICS
I/Q Offset
Full
II
50
55
dB
Pass-Band Amplitude Ripple (f < fIQCLK/8)
Full
II
±0.1
dB
Pass-Band Amplitude Ripple (f < fIQCLK/4)
Full
II
±0.5
dB
Stop-Band Response (f > fIQCLK
3/4)
Full
II
–63
dB
Tx GAIN CONTROL
Gain Step Size
25ºC
III
0.5
dB
Gain Step Error
25ºC
III
<0.05
dB
Settling Time to 1% (Full-Scale Step)
25ºC
III
1.8
s
IQ ADC CHARACTERISTICS
Resolution
*
N/A
N/A
6
Bits
Maximum Conversion Rate
Full
III
14.5
MHz
Pipeline Delay
N/A
N/A
3.5
ADC Cycles
Offset Matching between I and Q ADCs
±4.0
LSBs
Gain Matching between I and Q ADCs
±2.0
LSBs
Analog Input
Input Voltage Range
*
Full
III
1
Vppd
Input Capacitance
25ºC
III
2.0
pF
Differential Input Resistance
25ºC
III
4
k
AC Performance (AIN = 0.5 dBFS, fIN = 5 MHz)
Effective Number of Bits (ENOB)
Full
I
5.25
5.8
Bits
Signal-to-Noise Ratio (SNR)
Full
I
36.5
dB
Total Harmonic Distortion (THD)
Full
I
–50
dB
Spurious-Free Dynamic Range (SFDR)
Full
I
51
dB
(VAS = 3.3 V
5%, VDS = 3.3 V
10%, fOSCIN = 27 MHz, fSYSCLK = 216 MHz,
fMCLK = 54 MHz (M = 8), ADC Clock from OSCIN, RSET = 4.02 k , 75
DAC Load)
*IQ ADC in Default Mode. ADC Clock Select Register 8, Bit 3 set to “0.”


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