Analog Devices ADRV9001 User Manual page 201

Preliminary Technical Data
Table 89. Specifications for ADRV9001 RF EXT LO Single-ended Input Pin
Parameter
External LO frequency
RF Channel frequency
External LO power
Input Impedance
EXT LO Source Modulus
m8
FREQUENCY = 12.000GHz
S(10,10) = 0.668/–157.623
IMPEDANCE = 20.688 – j18.963
m7
FREQUENCY = 9.000GHz
S(10,10) = 0.593/–64.388
IMPEDANCE = 77.231 – j127.520
m6
FREQUENCY = 7.000GHz
S(10,10) = 0.546/9.880
IMPEDANCE = 315.757 – j84.329
m5
FREQUENCY = 4.500GHz
S(10,10) = 0.535/101.068
IMPEDANCE = 47.846 – j70.402
Care should be taken when selecting an on-board balun for this application. Combination of amplitude and phase balance performance
of the balun can affect quadrature error performance. Additionally, duty cycle and differential second order harmonic distortion impacts
the ability of to correct quadrature error. The recommended minimum requirement for Ext LO input pins is a combination of no more
than 5 degree differential phase error, 1dB differential amplitude error, 2% duty cycle error, and less than -50dBc even order
harmonics(primarily 2nd order).
The ADRV9001 provides special mode of operation for external LO in range from 500MHz to 1000MHz. In that region it is possible to
inject external LO that will produce RF Channel frequency with x1 multiplier. For example:
For FEXTLO = 500 MHz the FCHANNEL = 500 MHz
For FEXTLO = 1000 MHz, the FCHANNEL = 1000 MHz
Note
FEXTLO
FCHANNEL
50 Ω matching
nominal, small signal input. Note below.
Must match internal modulus on ADRV9001
0.5
M5
0.2
M4
M3
0
M8
–0.2
–0.5
FREQUENCY (60.00MHz TO 12.00GHz)
Figure 181. External LO Series Equivalent Differential Input Impedance
Rev. PrA | Page 201 of 253
1.0
2.0
M6
M1
M2
M7
–2.0
–1.0
Min Typical Max
60 2000
30 1000
0 +3 +6
50
8386560
m1
FREQUENCY = 60.00MHz
S(10,10) = 0.039/–81.146
IMPEDANCE = 100.912 – j7.872
5.0
m2
FREQUENCY = 1.000GHz
S(10,10) = 0.254/–135.783
IMPEDANCE = 65.484 – j24.798
m3
FREQUENCY = 2.000GHz
S(10,10) = 0.415/–173.750
IMPEDANCE = 41.462 – j4.523
m4
FREQUENCY = 3.000GHz
S(10,10) = 0.496/151.568
IMPEDANCE = 35.627 + j22.290
–5.0
UG-1828
Unit
MHz
MHz
dBm
Ω