PB-CHV2720-QJ-00A0中文资料
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February 2008 - Rev 08-Feb-08
P1dB, 8W
Power Gain, 12 dB Efficiency, 25% @ 1W
Features
General Description
The CHV2720-QJ is a high linearity single stage class AB Heterojunction Bipolar Transistor (HBT) power amplifier capable of 12 dB of gain, 8 Watt of power at 1 dB
(2) Quiescent current depends on Vcc
(3) Using an 802.16d OFDM signal format with PAR = 9dB (4) Using 3 GPP WCDMA signal, PAR = 9.17dB (5) 100KHz spacing
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EVM Vs Output Power Vs Frequency OFDM 802.16d, 64QAM, PAR =9dB, +12V
E V M (%)
Efficiency Vs Output power Vs Frequency Vcc = +12V, Vcontrol = +5V, Icq = 160mA
G a i n (d B )
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Output Power (dBm)
I c c (m A )
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Output Power (dBm)
February 2008 - Rev 08-Feb-08
Typical Performance
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Typical Performance (cont.)
P1dB Vs Voltage
2.5GHz
EVM Vs Output Power Vs Voltage OFDM 802.16d, 64QAM, PAR =9dB, 2.5GHz
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Output Power (dBm)18
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Output Power (dBm)
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Typical Performance (cont.)
d B
February 2008 - Rev 08-Feb-08
Z G o p t _2G 7
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February 2008 - Rev 08-Feb-08
Recommended S chematic
February 2008 - Rev 08-Feb-08
It is recommended that all N/C pins be grounded and sufficient number of via holes to be present under the ground plane to insure good RF and thermal grounding.
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February 2008 - Rev 08-Feb-08
App Note [1] Biasing- The CHV2720-QJ requires power supply sequencing. Vcc should be applied first and then Vcontrol. Quiescent current (Icq) can be varied by adjusting Vcontrol in order to obtain the optimum performance desired. RF power is applied after both Vcc and Vcontrol are present. When turning off the device Vcontrol is switched off first and then Vcc. Vcontrol can be used to turn off the current.
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February 2008 - Rev 08-Feb-08
regarding different plating types.
Handling and Assembly Information
CAUTION! - Mimix Broadband MMIC Products contain gallium arsenide (GaAs) which can be hazardous to the human body and the environment. For safety, observe the following procedures:
? Do not ingest.
? Do not alter the form of this product into a gas, powder, or liquid through burning, crushing, or chemical processing as these by-