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参数资料
| 型号： | HMC498 |
| 厂商： | HITTITE MICROWAVE CORP |
| 元件分类： | 放大器 |
| 英文描述： | 17000 MHz - 24000 MHz RF/MICROWAVE WIDE BAND MEDIUM POWER AMPLIFIER |
| 封装： | 2.38 X 1.46 MM, 0.10 MM HEIGHT, DIE-6 |
| 文件页数： | 6/6页 |
| 文件大小： | 253K |
| 代理商： | HMC498 |
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For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
Mounting & Bonding Techniques for Millimeterwave GaAs MMICs
The die should be attached directly to the ground plane eutectically or with
conductive epoxy (see HMC general Handling, Mounting, Bonding Note).
50 Ohm Microstrip transmission lines on 0.127mm (5 mil) thick alumina
thin film substrates are recommended for bringing RF to and from the chip
(Figure 1). If 0.254mm (10 mil) thick alumina thin film substrates must be
used, the die should be raised 0.150mm (6 mils) so that the surface of the
die is coplanar with the surface of the substrate. One way to accomplish
this is to attach the 0.102mm (4 mil) thick die to a 0.150mm (6 mil) thick
molybdenum heat spreader (moly-tab) which is then attached to the
ground plane (Figure 2).
Microstrip substrates should brought as close to the die as possible in
order to minimize bond wire length. Typical die-to-substrate spacing is
0.076mm to 0.152 mm (3 to 6 mils).
Handling Precautions
Follow these precautions to avoid permanent damage.
Storage:
All bare die are placed in either Waffle or Gel based ESD
protective containers, and then sealed in an ESD protective bag for
shipment. Once the sealed ESD protective bag has been opened, all die
should be stored in a dry nitrogen environment.
Cleanliness: Handle the chips in a clean environment. DO NOT attempt
to clean the chip using liquid cleaning systems.
Static Sensitivity:
Follow ESD precautions to protect against ESD
strikes.
Transients: Suppress instrument and bias supply transients while bias is
applied. Use shielded signal and bias cables to minimize inductive pick-up.
General Handling: Handle the chip along the edges with a vacuum collet
or with a sharp pair of bent tweezers. The surface of the chip may have
fragile air bridges and should not be touched with vacuum collet, tweezers, or fingers.
Mounting
The chip is back-metallized and can be die mounted with AuSn eutectic preforms or with electrically conductive epoxy.
The mounting surface should be clean and flat.
Eutectic Die Attach: A 80/20 gold tin preform is recommended with a work surface temperature of 255 °C and a tool
temperature of 265 °C. When hot 90/10 nitrogen/hydrogen gas is applied, tool tip temperature should be 290 °C. DO
NOT expose the chip to a temperature greater than 320 °C for more than 20 seconds. No more than 3 seconds of
scrubbing should be required for attachment.
Epoxy Die Attach: Apply a minimum amount of epoxy to the mounting surface so that a thin epoxy fillet is observed
around the perimeter of the chip once it is placed into position. Cure epoxy per the manufacturer’s schedule.
Wire Bonding
Ball or wedge bond with 0.025mm (1 mil) diameter pure gold wire. Thermosonic wirebonding with a nominal stage
temperature of 150 °C and a ball bonding force of 40 to 50 grams or wedge bonding force of 18 to 22 grams is
recommended. Use the minimum level of ultrasonic energy to achieve reliable wirebonds. Wirebonds should be
started on the chip and terminated on the package or substrate. All bonds should be as short as possible <0.31mm
(12 mils).
0.102mm (0.004”) Thick GaAs MMIC
Wire Bond
RF Ground Plane
0.127mm (0.005”) Thick Alumina
Thin Film Substrate
0.076mm
(0.003”)
Figure 1.
0.102mm (0.004”) Thick GaAs MMIC
Wire Bond
RF Ground Plane
0.254mm (0.010”) Thick Alumina
Thin Film Substrate
0.076mm
(0.003”)
Figure 2.
0.150mm (0.005”) Thick
Moly Tab
HMC498
v02.0110
GaAs pHEMT MMIC
POWER AMPLIFIER, 17 - 24 GHz
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| HMC498_10 | 制造商:HITTITE 制造商全称:Hittite Microwave Corporation 功能描述:GaAs pHEMT MMIC POWER AMPLIFIER, 17 - 24 GHz |
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| HMC498LC4TR | 功能描述:IC MODULATOR SIGE DIRECT 24-QFN 制造商:analog devices inc. 系列:- 包装:剪切带（CT） 零件状态:在售 功能:放大器 LO 频率:17GHz ~ 24GHz RF 频率:17GHz ~ 24GHz P1dB:25.5dBm 输出功率:- 电流 - 电源:250mA 电压 - 电源:5V 测试频率:- 封装/外壳:24-TFQFN 裸露焊盘 标准包装:1 |
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