Tait TP9100 - Page 54

54 Circuit Descriptions TP9100 Service Manual
© Tait Electronics Limited May 2005
Figure 3.3 Block diagram of the receiver circuitry
Image Filter
LNA
Image Filter
First IF
BPF 1
IF Amplifier
First IF
BPF 2
Quadrature
Demodulator
Bias
Network
Power
Supply
CODEC
and
Audio
Digital
PLL
Transmitter
Frequency
Synthesizer
Mixer
Receiver
VCO
CDC TXPWR RXFE CDC TXFIN RXAGC RX CDC QN RX CDC QP RX CDC IN RX CDC IP +3V0 RX +3V0 AN CDC RX VREF DIG RX EN DIG RX LE RX DIG LD DIG SYN SPI DO DIG VCO LOPWR
SYN RX OSC
SYN RX LO1
TX RX RF
Loop Filter
AGND
Interfaces
DIG RX ATTEN
DIG RX ATTEN
DIG VCO LOPWR
DIG SYN SPI CLK
Buffer
Attenuator
Signal Types:
RF analog clock digital asynchronous serial data synchronous serial data