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CMM3566-LC Datasheet(PDF) 1 Page - Mimix Broadband

Part No. CMM3566-LC
Description  3.4 to 3.5 GHz, 7.0V, 24 dBm W-CDMA Power Amplifier
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Maker  MIMIX [Mimix Broadband]
Homepage  http://www.mimixbroadband.com
Logo MIMIX - Mimix Broadband

CMM3566-LC Datasheet(HTML) 1 Page - Mimix Broadband

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The CMM3566-LC is a three stage amplifier that requires a
positive and a negative supply voltages for proper operation. It is
essential when turning on the device that the negative supply be
applied before the positive supply. When turning the device off,
the positive supply should be removed before the negative supply
is removed.
The CMM3566-LC can be operated over a range of supply
voltages and bias currents. It is important that the maximum power
dissipation specification for the package be observed at all times
and that the maximum voltage across the device not be exceeded.
Circuit Design Considerations
Biasing Three negative voltages are needed to set the bias current
of the 3-stage GaAs FET power amplifier. The first stage bias is
controlled via Vg1. The second stage bias is controlled via Vg2.
The output stage is controlled via Vg3. The recommended divider
networks for each gate bias shown in the schematic. The positive
supply voltage is applied to pins 5, 6, 7 and 8. The negative volt-
age supplies control the quiescent current of the device. The quies-
cent current needs to be set at the level specified in order to get the
guaranteed RF performances.
Negative bias voltages can also be used to control the gain,
the output power and the operating current during operation of the
device.
Matching Circuits Output matching circuit is required to achieve
the output power and gain guaranteed. Mimix’s recommenda-
tion for the topology of the matching circuit is shown in the
schematic diagram of the test circuit in this data sheet.
In providing both the negative and positive bias voltages, it is
important to provide adequate de-coupling between the RF signal
and the DC voltages. Inadequate de-coupling could result in low
output power, low gain or oscillation. Mimix recommends the
bias circuits shown in the evaluation circuit .
– Continued on Page 2 –
3.4 to 3.5 GHz, 7.0V, +24 dBm
W-CDMA Power Amplifier
Page 1 of 4
Mimix Broadband, Inc., 10795 Rockley Rd., Houston, Texas 77099
Tel: 281.988.4600 Fax: 281.988.4615 mimixbroadband.com
Characteristic Data and Specifications are subject to change without notice.
©2007 Mimix Broadband, Inc.
Export of this item may require appropriate export licensing from the U.S. Government. In purchasing these parts, U.S. Domestic customers accept
their obligation to be compliant with U.S. Export Laws.
CMM3566-LC
August 2007 - Rev 02-Aug-07
Functional Block Diagram
Ground Tab
Vg3 1
RF IN 4
Vg2 2
Vg1 3
7 RF OUT/+Vd3
8 RF OUT/+Vd3
5 Vd1
6 Vd2
Ground Tab
Features
7.0V Bias Voltage
+24 dBm Linear Output Power (W-CDMA)
30 dB Gain at Operating Output
Tested Under Digital Modulation (W-CDMA)
Leadless Chip Carrier (LCC) Package
Wireless Local Loop Subscriber Units
Wireless Local Loop Base Stations
Applications
The CMM3566-LC is a 7.0V, +24 dBm, linear power amplifier
intended for use in PCS handsets and wireless local loop
subscriber units and base stations. The amplifier is biased to meet
the requirements of linear modulation systems of W-CDMA. The
CMM3566-LC is packaged in a low-cost, space efficient, power
package that provides excellent electrical stability and low
thermal resistance. The part requires minimal external circuitry for
bias and matching to reduce space and cost.
General Description
Absolute Maximum Ratings
Application Information
Recommended Operating Conditions
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Drain Voltage (+Vd)
7.0
Volts
Operating Temperature (PC Board)
-40 to +70
°C
Parameter
Rating
Parameter
Rating
Parameter
Rating
Drain Voltage (+Vd)
+8 V*
Power Dissipation
5 W
Operating Temperature
-30°C to +90°C
Drain Current (Id)
1.0 A
Thermal Resistance
20°C/W
Channel Temperature
150°C
RF Input Power
0 dBm*
Storage Temperature
-65°C to +150°C
Soldering Temperature
240°C for 5 Sec.
DC Gate Voltage (-Vg)
-4.0 V*
BVGD
18 V
* Max (+V
d ) and (-Vg ) under linear operation. Max potential difference across the device at 1dB gain compression point (2Vd +|-Vg1) not to exceed the minimum breakdown voltage (BV
GD) of +18V.


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