SKY77351-13

Power Amplifier Module for Quad-Band GSM / GPRS / EDGE

Please note: SKY77351-13 is being discontinued and is not recommended for new designs.

SKY77351 -13 Power Amplifier Module (PAM) is designed in a compact form factor for quad-band cellular handsets comprising GSM850/900, DCS1800 and PCS1900, supporting fixed gain Gaussian Minimum-Shift Keying (GMSK) and linear Enhanced Data for GSM Evolution (EDGE) modulation. Class 12 General Packet Radio Service (GPRS) multi-slot operation is also supported.

The module consists of GSM850/900 PA and DCS1800/PCS1900 PA blocks, impedance matching circuitry for 50 Q input and output impedances, and a Multi-function Power Amplifier Control (MFC) block. A custom BiCMOS 1C provides the internal MFC function and interface circuitry.

Two separate Heterojunction Bipolar Transistor (HBT) PA blocks are fabricated onto a single InGaP die; one supports the GSM850/900 bands, the other the DCS1800/PCS1900 bands. Both PA blocks share common power supply pads to distribute current. The InGaP and silicon dies and the passive components are mounted on a multi-layer laminate substrate. The entire assembly is encapsulated with plastic overmold.

RF input and output ports of the SKY77351 -13 are internally matched to a 50 Q load to reduce the number of external components. Extremely low leakage current (15 uA, typical) of the PAM module maximizes handset standby time.

The SKY77351-13 also contains switching circuitry to select GSM or DCS/PCS bands and select high or low power modes.

Product Summary

Talk to Sales ECAD Model

Specifications

Product LifecycleLast Time Buy

Frequency (MHz)
824-849
880-915
1710-1785
1850-1910

DescriptionPAM for Quad-Band GSM/GPRS
GSM850
GSM900
DCS1800
PCS1900

Typical Output Power (dbm) GSM/EDGE
35.5
35.5
33.5
33.5

Typical PAE (%)
55.0
55.0
55.0
55.0

Typical Gain (dB)
-
-
-
-

Supply Voltage (V)3.0-4.8

PackageMCM, 13-pad

Package (mm)5 x 5 x 1.0

Features

High efficiency:
GSMLB
- 55% at High Power
- 33% at Medium Power
- 17% at Low power
- 9% at Ultra-low Power
GSMHB
- 55% at High Power
- 32% at Medium Power
- 22% at Low power
- 10% at Ultra-low Power
Small, low profile package:
- 5 x 5 mm x 1.0 mm Max.
- 13-pad configuration

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