3. TECHNICAL BRIEF
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3.6.1 Baseband Transmit Section
1. The AD6537B Baseband Transmit Section is designed to support GMSK for both
single-slotand multi-slot application.
2. The transmit channel consists of a digital GMSK modulator, a matched pair of 10-bit DACs
and a matched pair of reconstruction filter.
AD6537B
IP
IN
QP
QN
PA
BSIFS
BSDI
CSFS
CSDI
CSDO
Baseband
Serial
Port
Control
Serial
Port
GMSK
Modulator
Ramp
RAM
PGA
PGA
PGA
Tx
DAC
Tx
DAC
Ramp
DAC
SC
Filter
SC
Filter
SC
Filter
Active
CT Filter
Active
CT Filter
Active
CT Filter
Figure 3-12 AD6537B BASEBAND TRANSMIT SECTION
3.6.2 Baseband Transmit Section
1. This section consists of two identical ADC channels that process basebandin-phase(I) and
quadrature(Q) input signals.
IP
IN
QP
QN
AD6537B
BSOFS
BSDO
Baseband
Serial
Port
Digital
Filter
Rx
ADC
Rx
ADC
SC
Filter
SC
Filter
Digital
Filter
Figure 3-13 AD6537B BASEBAND RECEIVER SECTION
Othello
Summary of Contents for B2050
Page 7: ... 6 2 PERFORMANCE 2 PERFORMANCE 2 1 H W Features ...
Page 8: ... 7 2 PERFORMANCE ...
Page 9: ... 8 2 PERFORMANCE 2 2 Technical Specification ...
Page 10: ... 9 2 PERFORMANCE ...
Page 11: ... 10 2 PERFORMANCE ...
Page 12: ... 11 2 PERFORMANCE ...
Page 13: ... 12 2 PERFORMANCE ...
Page 57: ... 56 3 Checking Ant SW Mobile SW 4 TROUBLE SHOOTING ...
Page 67: ... 66 TEST POINT 4 6 LCD Trouble 4 TROUBLE SHOOTING ...
Page 70: ... 69 4 TROUBLE SHOOTING TEST POINT 4 7 Speaker Trouble ...
Page 77: ... 76 4 TROUBLE SHOOTING 4 10 KEY backlight Trouble TEST POINT ...
Page 92: ...5 DOWNLOAD AND CALIBRATION 91 5 2 Calibration ...
Page 93: ... 92 5 DOWNLOAD AND CALIBRATION ...
Page 97: ......
Page 103: ... 102 Figure 8 1 B2050 BOTTOM SIDE PCB LAYOUT 8 PCB LAYOUT ...
Page 104: ... 103 8 PCB LAYOUT Figure 8 1 B2050 TOP SIDE PCB LAYOUT ...
Page 105: ......
Page 113: ...10 STAND ALONE TEST 112 ...
Page 117: ......
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