Rx Path Specifications - Analog Devices AD9866 Instructions Manual

Broadband modem mixed-signal front end
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AD9866
Parameter
−3 dB Bandwidth
Stop Band Rejection (0.289 f
PLL CLK MULTIPLIER
OSCIN Frequency Range
Internal VCO Frequency Range
Duty Cycle
OSCIN Impedance
5
CLKOUT1 Jitter
6
CLKOUT2 Jitter
CLKOUT1 and CLKOUT2 Duty Cycle
1
Gain error and gain temperature coefficients are based on the ADC only (with a fixed 1.23 V external reference and a 1 V p-p differential analog input).
2
TxDAC IOUTFS = 20 mA, differential output with 1:1 transformer with source and load termination of 50 Ω, F
3
IOUN full-scale current = 80 mA, f
4
Use external amplifier to drive additional load.
5
Internal VCO operates at 200 MHz , set to divide-by-1.
6
Because CLKOUT2 is a divided down version of OSCIN, its jitter is typically equal to OSCIN.
7
CLKOUT2 is an inverted replica of OSCIN, if set to divide-by-1.

Rx PATH SPECIFICATIONS

AVDD = 3.3 V ± 5%, DVDD = CLKVDD = DRVDD = 3.3 V ± 10%; half- or full-duplex operation with CONFIG = 0 default power bias
settings, unless otherwise noted.
Table 2.
Parameter
Rx INPUT CHARACTERISTICS
Input Voltage Span (RxPGA gain = −10 dB)
Input Voltage Span (RxPGA gain = +48 dB)
Input Common-Mode Voltage
Differential Input Impedance
Input Bandwidth (with RxLPF Disabled, RxPGA = 0 dB)
Input Voltage Noise Density (RxPGA Gain = 36 dB, f
Input Voltage Noise Density (RxPGA Gain = 48 dB, f
RxPGA CHARACTERISTICS
Minimum Gain
Maximum Gain
Gain Step Size
Gain Step Accuracy
Gain Range Error
RxLPF CHARACTERISTICS
Cutoff Frequency (f
) range
−3 dBF
Attenuation at 55.2 MHz with f
Pass-Band Ripple
Settling Time to 5 dB RxPGA Gain Step @ f
Settling Time to 60 dB RxPGA Gain Step @ f
ADC DC CHARACTERISTICS
Resolution
Conversion Rate
1
Rx PATH LATENCY
Full-Duplex Interface
Half-Duplex Interface
to 0.711 f
)
OSCIN
OSCIN
7
= 80 MHz, f
=160 MHz, 2× interpolation.
OSCIN
DAC
−3 dBF
−3 dBF
= 21 MHz
−3 dBF
= 50 MSPS
ADC
= 50 MSPS
ADC
Temp
Test Level
Full
V
Full
V
Full
IV
Full
IV
Full
II
25°C
V
25°C
III
25°C
III
Full
III
Temp
Test Level
Full
III
Full
III
25°C
III
25°C
III
25°C
III
= 26 MHz)
25°C
III
= 26 MHz)
25°C
III
25°C
III
25°C
III
25°C
III
25°C
III
25°C
III
Full
III
25°C
III
25°C
III
25°C
III
25°C
III
NA
NA
FULL
II
Full
V
Full
V
Rev. A | Page 4 of 48
Min
Typ
0.1202
50
5
20
40
100//3
12
6
45
= 5 MHz, 4× interpolation.
OUT
Min
Typ
6.33
8
1.3
400
4.0
53
2.7
2.4
−12
48
1
Monotonic
0.5
15
20
±1
20
100
12
5
10.5
10.0
Max
Unit
f
/f
OUT
DAC
dB
80
MHz
200
MHz
60
%
ΜΩ//pF
ps rms
ps rms
55
%
Max
Unit
V p-p
mV p-p
V
pF
MHz
nV/rtHz
nV/rtHz
dB
dB
dB
dB
dB
35
MHz
dB
dB
ns
ns
Bits
80
MSPS
Cycles
Cycles

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