3. TECHNICAL BRIEF
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Only for training and service purposes
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3.3.1 Internal Block Diagram
3.3 FEM with integrated Power Amplifier Module
(RF7161, U401)
Figure. 3-3-1 RF7161 FUNCTIONAL BLOCK DIAGRAM
3.3.2 General Description
The RF7161 is a quad-band (GSM850/EGSM900/DCS1800/PCS1900) GSM/GPRS, Class 12 compliant
transmit module with four interchangeable receive ports. This transmit module builds upon RFMD’s
leading power amplifier with PowerStar® integrated power control technology, pHEMT switch technology,
and integrated transmit filtering for best-in-class harmonic performance.
The results are high performance, reduced solution size, and ease of implementation. The device is
designed for use as the final portion of the transmitter section in a GSM850/EGSM900/DCS1800/PCS1900
handset and eliminates the need for a PA-to antenna switch module matching network.
The RF7161 features RFMD’s latest integrated power-flattening circuit which significantly reduces current
and power variation into load mismatch. Additionally, a VBATT tracking feature is incorporated to
maintain switching performance as supply voltage decreases.
3. TECHNICAL BRIEF
ͽͶ͑ͺΟΥΖΣΟΒΝ͑ΆΤΖ͑ΟΝΪ
Z[VX[^
3.3.1 Internal Block Diagram
3.3 FEM with integrated Power Amplifier Module
(RF7161, U401)
Figure. 3-3-1 RF7161 FUNCTIONAL BLOCK DIAGRAM
3.3.2 General Description
The RF7161 is a quad-band (GSM850/EGSM900/DCS1800/PCS1900) GSM/GPRS, Class 12 compliant
transmit module with four interchangeable receive ports. This transmit module builds upon RFMD’s
leading power amplifier with PowerStar® integrated power control technology, pHEMT switch technology,
and integrated transmit filtering for best-in-class harmonic performance.
The results are high performance, reduced solution size, and ease of implementation. The device is
designed for use as the final portion of the transmitter section in a GSM850/EGSM900/DCS1800/PCS1900
handset and eliminates the need for a PA-to antenna switch module matching network.
The RF7161 features RFMD’s latest integrated power-flattening circuit which significantly reduces current
and power variation into load mismatch. Additionally, a VBATT tracking feature is incorporated to
maintain switching performance as supply voltage decreases.
3. TECHNICAL BRIEF