4.0
RoHS Compliant & Pb-Free Product
LOW NOISE, MULTI-MODE, QUAD-BAND, QUADRATURE MODULATOR AND PA DRIVER
W-CDMA/GSM/EDGE Multimode Handsets and Data Cards
-A-B-
1.00 0.80
The RF2705 is a low noise, multi-mode, quad-band direct I/Q to RF modulator and PA driver designed for handset a
Key Features
W-CDMA High/Mid/Low Power Modes.
Quad-Band Direct Quadrature Modulator.
Variable Gain PA Drivers.
GMSK Bypass Amplifiers.
LO Frequency Doubler and Divider.
Baseband Filtering
I SIG N
I SIG P
24 VCC2 1
23
22
21
Note: The die flag is the chip's main ground. VCC1
LO HB P 2
RF OUT 17 WB N
DIV 2
+45° -45°
LO HB N 3
16 Σ
RF OUT HB P RF OUT HB N RF OUT LB P RF OUT LB N
LO LB P 4
Flo x2
+45° -45°
15
LO LB N 5
Mode Control and Bias.
Full PDF Text Transcription for RF2705G (Reference)
Note: Below is a high-fidelity text extraction (approx. 800 characters) for
RF2705G. For precise diagrams, and layout, please refer to the original PDF.
PCS) Handsets • W-CDMA Handsets/Data Cards Product Description 4.0 RoHS Compliant & Pb-Free Product LOW NOISE, MULTI-MODE, QUAD-BAND, QUADRATURE MODULATOR AND PA DRIVER • W-CDMA/GSM/EDGE Multimode Handsets and Data Cards -A-B- 1.00 0.80 The RF2705 is a low noise, multi-mode, quad-band direct I/Q to RF modulator and PA driver designed for handset applications where multiple modes of operation are required. Frequency doublers, dividers and LO buffers are included to support a variety of LO generation options. Dynamic power control is supported through a single analog input giving 90dB of power control range for the W-CDMA mo