adl5363 Analog Devices, Inc., adl5363 Datasheet - Page 10

• Manufacturer Part Number: adl5363
• Description: 2300 Mhz To 2900 Mhz Balanced Mixer, Lo Buffer And Rf Balun Preliminary Technical Datasheet Adl5363
• Manufacturer: Analog Devices, Inc.

ADL5363
APPLICATIONS INFORMATION
BASIC CONNECTIONS
The ADL5363 mixer is designed to up- or downconvert
between radio frequencies (RF) from 2300 MHz to 2900 MHz and
intermediate frequencies (IF) from dc to 450 MHz. Figure 9
depicts the basic connections of the mixer. It is recommended to
ac-couple RF and LO input ports to prevent non-zero dc voltages
from damaging the RF balun or LO input circuit. The RFIN
capacitor value of 3 pF is recommended to provide the optimized
RF input return loss for the desired frequency band.
For upconversion, the IF input, Pin 18 (IFON) and Pin 19
(IFOP), must be driven differentially or by using a 1:1 ratio
transformer for single-ended operation. A 3 pF capacitor is
recommended for the RF output, Pin 2 (RFIN).
IF PORT
The real part of the output impedance is approximately 50 Ω,
which matches many commonly used SAW filters without the
need for a transformer. This results in a voltage conversion loss
+5V
0.01µF
4.7µF
RF-IN
+5V
10pF
12nH
1.5pF
10pF
+5V
1
2
3
4
5
6
20
10pF
Figure 9. Typical Application Circuit
IF1_OUT
560pF
C25
Rev. PrA | Page 10 of 15
19
GENERATOR
7
T1
R
BIAS LO
BIAS
560pF
C24
18
8
10pF
that is approximately the same as the power conversion loss, as
shown in Table 3.
BIAS RESISTOR SELECTION
An external resistor, R
of the integrated amplifiers at the LO terminals. It is necessary
to have a sufficient amount of current to bias the internal LO
amplifier to optimize dc current vs. optimum IIP3 performance.
MIXER VGS CONTROL DAC
The ADL5363 features two logic control pins, Pin 12 (VGS0)
and Pin 13 (VGS1), that allow programmability for internal
gate-to-source voltages for optimizing mixer performance over
desired frequency bands. The evaluation board defaults both
VGS0 and VGS1 to ground.
R1
0Ω
ADL5363
17
9
10kΩ
10kΩ
Preliminary Technical Datasheet
16
10
BIAS LO
15
14
13
12
11
22pF
22pF
, is used to adjust the bias current
10pF
LO2_IN
+5V
LO1_IN