Analog Devices Hittite HMC900LP5E User manual

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HMC900LP5E Evaluation Kit
User Manual
Software & Hardware Installation
20 Alpha Road Chelmsford, MA 01824
Phone: [phone] • Fax: [phone] • [e-mail]
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Analog, Digital & Mixed-Signal ICs, Modules, Subsystems & Instrumentation
Part #
140-00012-00
Rev. A - v00.0411
ECN# CP110507

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HMC900LP5E Evaluation Kit User Manual
Table of Contents
1. Introduction ..................................................................... 3
1.1 Hittite LPF Evaluation Kit Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1.1 Hardware ........................................................................ 3
1.1.2 Software. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Operating Environment ........................................................... 3
3. Setup and Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3.1 User Provided Equipment ......................................................... 4
4. Hardware Setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4.1 Evaluation Board Conguration .................................................... 5
4.1.1 Default Conguration (Differential Inputs/Outputs) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4.1.2 Single-Ended Inputs/Outputs Conguration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4.1.2.1 Single-Ended Input Conguration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4.1.2.2 Single-Ended Output Conguration ................................................ 6
4.2 HMC900LP5E Evaluation Board Interface to Test Equipment. . . . . . . . . . . . . . . . . . . . . . . . . . 7
5. Software Installation/Uninstallation ................................................ 7
6. Get Started with Hittite LPF Eval Software. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
7. Using HMC900LP5E Evaluation Software ........................................... 9
7.1 Quick Setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
7.2 Direct Register Access/Direct SPI Access ......................................... 11
7.3 Save or Load Complete Register Files ............................................. 11

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HMC900LP5E Evaluation Kit User Manual
1. Introduction
This document describes the functionality of the HMC900LP5E 6th order Low Pass Filter
Evaluation Kit, and provides high level instructions for using the Kit. This kit includes PC
compatible software that generates a Graphical User Interface (GUI) allowing the user to read
from and write to all device registers, set gain levels, program lter bandwidth and save &
recall device congurations.
Note: For most up-to-date software download and information please visit www.hittite.com and
navigate to HMC900LP5E page.
1.1 Hittite LPF Evaluation Kit Contents
1.1.1 Hardware
Item Quantity
HMC900LP5E Evaluation Board 1
USB Interface Board 1
6’ USB A Male to USB B Male Cable 1
CD ROM (Contains User Manual and software) 1
1.1.2 Software
HMC900LP5E Eval Software
• Used to enable communication between a PC and HMC900LP5E
• Enables users to observe full functionality and performance of HMC900LP5E
Note: All software can be downloaded from www.hittite.com, or shipped on a CD along with other
contents of the kit.
2. Operating Environment
The HMC900LP5E Evaluation Kit is designed for use in a laboratory setting at ambient room
temperature (25 °C) and is not protected against moisture. The USB Interface Board has an
ESD rating of ±3000V, however the HMC device may have a lower rating (check the product’s
data sheet for its specic ESD rating). Use appropriate ESD procedures and precautionary
measures when handling all electronic hardware.

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HMC900LP5E Evaluation Kit User Manual
3. Setup and Installation
3.1 User Provided Equipment
In addition to the items provided in the Kit, the user must provide the following equipment
to communicate with HMC900LP5E under test.
• DC Power Supply
• DC Cables
• Computer (PC) with Standard USB port
• Baseband differential I/Q signal source
• Baseband differential I/Q measuring equipment
• 40 MHz clock source for calibration
Figure 1. Hardware Setup

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HMC900LP5E Evaluation Kit User Manual
4. Hardware Setup
Setup all hardware according to Figure 1.
• Connect USB board to HMC900LP5E Eval board.
• Connect the USB cable to USB board.
• Apply +5.5 V to TP1 (TP2 is GND) on (HMC900LP5E) Eval board. Supply current
should be ~150 mA.
• I/Q inputs to J6, J7, J8 and J9.
• I/Q outputs to J1, J2, J3 and J4.
• Common mode voltage (2.5 V typ) is generated directly on the board for the input and
output connections.
4.1 Evaluation Board Conguration
The HMC900LP5E Evaluation Board schematic shows both differential and single-ended
congurations with components required for single-ended operation labeled ‘depop’.
4.1.1 Default Conguration (Differential Inputs/Outputs)
The HMC900LP5E Evaluation Board is shipped congured for differential operation by
default. Components required for single-ended operation are specied in the Evaluation
Board schematic, but are not populated. Default (differential) input and output congurations
are shown in Figure 2 and Figure 3 respectively.
Figure 2. HMC900LP5E Evaluation Board Default Differential Input Conguration
Figure 3.HMC900LP5E Evaluation Board Default Differential Output Conguration

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4.1.2 Single-Ended Inputs/Outputs Conguration
Hardware board changes are required to congure the HMC900LP5E Evaluation Board
for single-ended operation
4.1.2.1 Single-Ended Input Conguration
To congure the HMC900LP5E Evaluation Board for single-ended input operation, 0 Ω
resistors R41, R42, R45, R46 need to be removed, and the following components need to
be populated:
• 0 Ω resistors, R40, R43, R44, R47, R57, R58
• 10 µF capacitors, C45, C46
• and two ADT2-1T Baluns (T3 & T4)
Note that the components required for single-ended conguration are not included in the
HMC900LP5E Evaluation Kit:
Single-ended input conguration of the HMC900LP5E is shown in Figure 4.
Figure 4. HMC900LP5E Evaluation Board Single-Ended Input Conguration
4.1.2.2 Single-Ended Output Conguration
To congure the HMC900LP5E Evaluation Board for single-ended output operation, 0 Ω
resistors R19, R9, R18, R26 need to be removed, and the following components need to
be populated:
• 0 Ω resistors, R10, R20, R17, R25, R2, R5
• 10 µF capacitors, C44, C43
• and two ADT2-1T Baluns (T1 & T2)
Note that the components required for single-ended conguration are not included in the
HMC900LP5E Evaluation Kit:
Single-ended output conguration of the HMC900LP5E is shown in Figure 5.

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Figure 5. HMC900LP5E Evaluation Board Single-Ended Output Conguration
4.2 HMC900LP5E Evaluation Board Interface to Test Equipment
To provide seamless interface to standard off-the-shelf test equipment, the HMC900LP5E
Evaluation Board has an on-board impedance matching network shown in Figure 3 and
Figure 5 for differential and single-ended output conguration respectively.
The impedance matching network transforms HMC900LP5E’s load impedance of 400 Ω
differential to 100 Ω differential (50 Ω single-ended), which is common input impedance
for test equipment.
When observing voltage levels out of the HMC900LP5E Evaluation Board, the impedance
transformation, resulting from the matching network, needs to be considered.
The impedance transformation will result in an observed voltage drop of ≈ 16.8 dB
(140 / /100
20log 16.8
140 / /100 174 174
o I I
V V V dB
 
Ω Ω
= + = −
 
Ω Ω + Ω + Ω
  ) using differential setup. Single-ended
operation will result in additional 3 dB voltage loss (19.8 dB total voltage loss) due to the
2:1 balun turns ratio.
5. Software Installation/Uninstallation
Double click on “HMC900LP5E Evaluation Software Installer.exe” and follow the
installation/uninstallation wizard.
6. Get Started with Hittite LPF Eval Software
1. Launch the software by double clicking on the icon. The main window should open.
See gure below.

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Figure 6. Hittite LPF Product Selection Window
2. From this window select the HMC900LP5E from the drop down menu and press “Done”
and the following window appears.
Figure 7.HMC900LP5E Main GUI

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7. Using HMC900LP5E Evaluation Software
The GUI features three main areas:
• Quick Setup
• Direct SPI access/ Direct Register access
• Ability to save or load complete register les
7.1 Quick Setup
The Quick Setup Menu allows the user to quickly:
• enable/disable the HMC900LP5E I or Q path,
• set the passband gain,
• set the lter bandwidth,
• execute a calibration and set the lter bandwidth to an arbitrary value
Figure 8. HMC900LP5E Quick Setup Menu

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• Enabling I and/or Q channel and setting the HMC900LP5E to 10dB gain mode are
accomplished by checking the appropriate box directly.
• Setting the lter bandwidth without running a calibration is accomplished by choosing
one of the selected bandwidths in the pull down menu and pressing the “Set Bandwidth”
button. Note that the uncalibrated lter bandwidth is only within +20% of the chosen
bandwidth.
• Setting an arbitrary lter bandwidth is accomplished by rst running a calibration
with a user supplied clock (connected to J5 SMA connector on the HMC900LP5E
evaluation board) and then calculating the bandwidth codes and programming the
HMC900LP5E.
• Enter the frequency of the clock source in MHz (40MHz is recommended, please see
the datasheet for other frequencies).
• Connect and enable the clock source
• Press the “Calibrate Filter” button. Note the Cal result and the Cal count outputs.
• Enter the desired arbitrary lter bandwidth and press the “Calculate Filter Bandwidth
Codes” button. This routine uses the previous calibration result and calculates the
required settings. These settings are applied via the “Write BW Settings” button.

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7.2 Direct Register Access/Direct SPI Access
• Press the “Open HMC900LP5E GUI” button to display the detailed bit settings of the
internal registers, shown in the following gure. Refer to the datasheet for register and
bit descriptions.
Figure 9. HMC900LP5E Register Settings
• Each register is controlled by its own “Read” and “Write” button in its sub-panel. If you
click on any check box the action is only implemented when you push that register’s
“Write” button. Similarly a panel is only updated when you push the “Read” button.
• (“Direct SPI Access” button provides direct register read/write capability in Hex. These
are de-bug tools only.)
7.3 Save or Load Complete Register Files
• To open an existing register conguration le use the “Load Register File” button.
• To save a register conguration to a le use the “Save Register File” button. This
allows you to instantly recall the desired register state by using the “Load Register
File” button.

20 Alpha Road Chelmsford, MA 01824
Phone: [phone] • Fax: [phone] • [e-mail]
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