AD9865
Parameter
Temp
Test Level
Min
Typ
Max
Unit
Tx DIGITAL FILTER CHARACTERISTICS (4× Interpolation)
Latency (Relative to 1/ FDAC
−0.2 dB Bandwidth
−3 dB Bandwidth
Stop Band Rejection (0.289 fOSCIN to 0.711 fOSCIN
PLL CLK MULTIPLIER
)
Full
Full
Full
Full
V
V
V
V
96
Cycles
fOUT/fDAC
fOUT /fDAC
dB
0.1095
0.1202
50
)
OSCIN Frequency Range
Internal VCO Frequency Range
Duty Cycle
Full
Full
Full
IV
IV
II
5
20
40
80
200
60
MHz
MHz
%
OSCIN Impedance
CLKOUT1 Jitter5
25°C
25°C
V
III
100//3
12
ΜΩ/pF
ps rms
CLKOUT2 Jitter6
CLKOUT1 and CLKOUT2 Duty Cycle7
25°C
Full
III
III
6
ps rms
%
45
55
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, FOUT = 5 MHz, 4x interpolation.
3 IOUN full-scale current = 80 mA, fOSCIN = 80 MHz, fDAC =160 MHz, 2x interpolation.
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 5ꢀ, DVDD = CLKVDD = DRVDD = 3.3 V 10ꢀ% half- or full-duplex operation with CONFIG = 0 default power bias
settings, unless otherwise noted.
Table 2.
Parameter
Temp
Test Level
Min
Typ
Max
Unit
Rx INPUT CHARACTERISTICS
Input Voltage Span (RxPGA Gain = −10 dB)
Input Voltage Span (RxPGA Gain = +48 dB)
Input Common-Mode Voltage
Differential Input Impedance
Full
Full
25°C
25°C
III
III
III
III
6.33
8
1.3
400
4.0
V p-p
mV p-p
V
Ω
pF
Input Bandwidth (with RxLPF Disabled, RxPGA = 0 dB)
Input Voltage Noise Density (RxPGA Gain = 36 dB, f−3 dBF = 26 MHz)
Input Voltage Noise Density (RxPGA Gain = 48 dB, f−3 dBF = 26 MHz)
RxPGA CHARACTERISTICS
25°C
25°C
25°C
III
III
III
53
3.0
2.4
MHz
nV/rtHz
nV/rtHz
Minimum Gain
Maximum Gain
Gain Step Size
Gain Step Accuracy
25°C
25°C
25°C
25°C
25°C
III
III
III
III
III
−12
48
1
Monotonic
0.5
dB
dB
dB
dB
dB
Gain Range Error
RxLPF CHARACTERISTICS
Cutoff Frequency (f−3 dBF ) Range
Attenuation at 55.2 MHz with f−3 dBF = 21 MHz
Pass-Band Ripple
Settling Time to 5 dB RxPGA Gain Step @ fADC = 50 MSPS
Settling Time to 60 dB RxPGA Gain Step @ fADC = 50 MSPS
ADC DC CHARACTERISTICS
Full
III
III
III
III
III
15
35
80
MHz
dB
dB
ns
25°C
25°C
25°C
25°C
20
1
20
100
ns
Resolution
Conversion Rate
NA
Full
NA
II
10
Bits
MSPS
5
Rev. A | Page 4 of 48
ADI [ ADI ]
