Analog Devices ADRV9005 Reference Manual page 284

Reference Manual
RF PORT INTERFACE INFORMATION
Table 115. Specifications for ADRV9001 RF EXT LO Differential Input Pins
Parameter Note
External LO Frequency FEXTLO
RF Channel Frequency FCHANNEL
External LO Power
100 Ω matching
Signal amplitude depends on FEXTLO frequency.
Typical = 0 dBm for FEXTLO ≤ 2 GHz.
From 2 GHz, add 0.5 dB/GHz.
For example,
Typical = +3 dBm for FEXTLO = 8 GHz.
Input Impedance Nominal, small-signal input. Note the following.
Differential Phase Error Combined Differential-Phase Error, Differential Amplitude Error, Duty-Cycle Error, and Even
Order Harmonic Content
Differential Amplitude Error
Duty-Cycle Error
Even Order Harmonic
Content
External LO Source Modulus Must match the internal modulus on the ADRV9001.
Table 116. Specifications for ADRV9001 RF EXT LO Single-Ended Input Pin
Parameter
External LO Frequency
RF Channel Frequency
External LO Power
Input Impedance
External LO Source Modulus
Ensure care when selecting an on-board balun for this application. The combination of amplitude and phase balance performance of the balun
can affect quadrature error performance. Additionally, duty cycle and differential second-order harmonic distortion impact the ability to correct
quadrature error. The recommended minimum requirement for external LO input pins is a combination of no more than 5° differential phase
error, 1 dB differential amplitude error, 2% duty-cycle error, and less than −50 dBc even order harmonics (primarily second order).
The ADRV9001 provides a special mode of operation for external LO in the range from 500 MHz to 1000 MHz. In that region, it is possible to
inject external LO that produces RF channel frequency with an x1 multiplier.
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Note
FEXTLO
FCHANNEL
50 Ω matching
Nominal, small-signal input. Note the following.
Must match the internal modulus on the ADRV9001.
Figure 268. External LO Series Equivalent Differential Input Impedance
ADRV9001
Min Typical Max
60 12000
30 6000
−6 −3 ~ +3 +6
100
±5
1
2
−50
83865
60
Min Typical Max
60 2000
30 1000
0 +3 +6
50
8386560
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Unit
MHz
MHz
dBm
Ω
Degrees
dB
%
dBc
Unit
MHz
MHz
dBm
Ω