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RMPA1966 Datasheet, PDF (1/7 Pages) Fairchild Semiconductor – RMPA1966 I-Lo TM WCDMA Band II Power Amplifier Module, 1850-1910 MHz | |||
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PRELIMINARY
June 2006
RMPA1966 i-Loâ¢
WCDMA Band II Power Ampliï¬er Module, 1850â1910 MHz
Features
â 40% WCDMA efï¬ciency at +28.5dBm Pout
â 20% WCDMA efï¬ciency (58mA total current) at
+16dBm Pout
â Low quiescent current (Iccq): 18mA in low-power
mode
â Meets UMTS/WCDMA performance requirements
â Meets HSDPA performance requirements
â Single positive-supply operation with low power and
shutdown modes
â 3.4V typical Vcc operation
â Low Vref (2.85V) compatible with advanced handset
chipsets
â Compact Lead-free compliant LCC package â
(4.0 x 4.0 x 1.0mm nominal)
â Industry standard pinout
â Internally matched to 50⦠and DC blocked RF
input/output
General Description
The RMPA1966 Power Ampliï¬er Module (PAM) is
Fairchildâs latest innovation in 50⦠matched, surface
mount modules targeting UMTS/WCDMA/HSDPA
applications. Answering the call for ultra-low DC power
consumption and extended battery life in portable
electronics, the RMPA1966 uses novel proprietary
circuitry to dramatically reduce ampliï¬er current at low to
medium RF output power levels (< +16dBm), where the
handset most often operates. A simple two-state Vmode
control is all that is needed to reduce operating current
by more than 60% at 16dBm output power, and
quiescent current (Iccq) by as much as 70% compared
to traditional power-saving methods. No additional circuitry,
such as DC-to-DC converters, are required to achieve this
remarkable improvement in ampliï¬er efï¬ciency. Further,
the 4 x 4 x 1.0 mm LCC package is pin-compatible and a
drop-in replacement for last generation 4 x 4 mm PAMs
widely used today, minimizing the design time to apply
this performance-enhancing technology. The multi-stage
GaAs Microwave Monolithic Integrated Circuit (MMIC) is
manufactured using Fairchild RFâs InGaP Heterojunction
Bipolar Transistor (HBT) process.
Functional Block Diagram
(Top View)
Vcc1 1
RF IN 2
GND 3
Vmode 4
Vref 5
MMIC
INPUT
MATCH
BIAS/MODE SWITCH
10 Vcc2
OUTPUT
MATCH
9 GND
8 RF OUT
7 GND
6 GND
11 (paddle ground on package bottom)
©2005 Fairchild Semiconductor Corporation
1
RMPA1966 i-Lo⢠Rev. B
www.fairchildsemi.com
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