HMC440QS16G_08 Datasheet, PDF (6/10 Pages) Hittite Microwave Corporation – 2.8 GHz INTEGER-N SYNTHESIZER

Evaluation PCB
v03.0808
HMC440QS16G / 440QS16GE
2.8 GHz INTEGER-N SYNTHESIZER
(N = 2 - 32)
8
The circuit board used in the final application should use RF circuit design techniques. Signal lines should have 50
ohm impedance while the package ground leads and backside ground slug should be connected directly to the ground
plane similar to that shown. A sufficient number of via holes should be used to connect the top and bottom ground
planes. The evaluation circuit board shown is available from Hittite upon request.
List of Materials for
Evaluation PCB 105811 ^[1]
Item
Description
J1 - J6
PC Mount SMA RF Connector
J7
C1-C4, C7, C8
C5, C6, C9
2 mm DC Header
100 pF Capacitor, 0402 Pkg.
1000 pF Capacitor, 0603 Pkg.
C10
4.7 μF Capacitor
R1, R3
R2^[3], R4 ^[3]
R5
200 Ohm Resistor, 0603 Pkg.
4.3 Ohm Resistor, 0603 Pkg.
Resistor Network, 10k Ohm
U1
HMC440QS16G / HMC440QS16GE
PCB ^[2]
105738 Eval Board
[1] Reference this number when ordering complete evaluation PCB
[2] Circuit Board Material: Rogers 4350
[3] Choose values of R2 & R4 between 4.3 and 20 Ohms for best
noise performance
Evaluation PCB Truth Table
Function
S1
S2
S3
S4
S5
Output Low
0
0
0
0
0
/2
1
0
0
0
0
/3
0
1
0
0
0
/4
1
1
0
0
0
-
-
-
-
-
-
/ 32
1
1
1
1
1
Note: 0 = Jumper Installed.
1 = Jumper Not Installed.
Note: The evaluation PCB for the HMC440QS16G contains
10K Ohm pull up resistors for each of the five control inputs
A0 through A4. Programming the 31 distinct division ratios
consists of installing or removing jumpers S1 through S5, as
shown below.
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: [phone] Fax: [phone]
Order On-line at www.hittite.com
8-7