UG-1828 Preliminary Technical Data
Rev. PrC | Page 244 of 338
upconvertion or downconversion for internal transmitters and receivers. Table 99 describes specification for EXT LO input pins when
input pins are driven by a differential signal by use of balun.
Alternatively single-ended external LO signal source can be used for positive side of EXT LO pin with negative side of input pin
terminated with a capacitor to provide ac ground. The frequency of external LO source should be set to 4x of desired RX or TX frequency
with EXT LO divider configured to division of 4 for the best in-phase and quadrature generation of LO necessary for internal receivers
and transmitters. Table 100 describes specification for single-ended EXT LO input source.
In general, higher power level of external LO signal applied gives better phase noise to some extent. The minimum input power level that
satisfy RX/TX phase noise requirements with some margin should be used. Refer to Table 100 for power level recommendation.
Table 99. Specifications for ADRV9001 RF EXT LO Differential Input Pins
Parameter Note Min Typical Max Unit
External LO frequency FEXTLO 60 12000 MHz
RF Channel frequency FCHANNEL 30 6000 MHz
External LO power 100 Ω matching
Signal amplitude depends on FEXTLO frequency.
Typical = 0dBm for FEXTLO <= 2GHz.
From 2 GHz, add 0.5dB/GHz.
For example,
Typical = +3dBm for FEXTLO = 8GHz.
−6 −3 ~
+3
+6 dBm
Input Impedance nominal, small signal input. Note below. 100 Ω
Differential Phase
Error
Combined Differential Phase Error, Differential Amplitude Error, Duty Cycle
Error, and Even Order Harmonic Content
±5 degrees
Differential
Amplitude Error
1 dB
Duty Cycle Error 2 %
Even Order Harmonic
Content
−50 dBc
EXT LO Source
Modulus
Must match internal modulus on ADRV9001 8386560
Table 100. Specifications for ADRV9001 RF EXT LO Single-ended Input Pin
Parameter Note Min Typical Max Unit
External LO frequency FEXTLO 60 2000 MHz
RF Channel frequency FCHANNEL 30 1000 MHz
External LO power 50 Ω matching 0 +3 +6 dBm
Input Impedance nominal, small signal input. Note below. 50 Ω
EXT LO Source Modulus Must match internal modulus on ADRV9001 8386560