SA900 Просмотр технического описания (PDF) - Philips Electronics

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SA900

I/Q transmit modulator

Philips Electronics 

Philips Semiconductors

I/Q transmit modulator

BLOCK DIAGRAM

LO_2

LO_1

I I QQ

Preliminary specification

SA900

TXLO_2

TXLO_1

TANK_1

TANK_2

PHSOUT

IPEAK

XTAL_1

XTAL_2

VCO

TXLO

LPF

VCO

IMAGE

REJECT

MIXER

÷N

2

PHASE

LPF

SHIFT

NETWORK

LPF

PHS

DET

XTAL

OSC

÷A8/1 AD

AD

÷B8/1 AD

BIAS

BG

SE

N<0:1>

AD

SM1

SM2

Y

X

÷ 3/1

÷ ÷ X

SM1

2/1 Y

SM2

4/5/1

SM1

SM2

CONV2

VGA

PA

PA

VGA

CONTROL

6

CONTROL

LOGIC

CLK1

CLK2

MCLK

CLKSET DATA CLOCK STROBE TXEN

Figure 2. Block Diagram

DUALTX

AMPSTX

SR00637

1997 Sept 16

3

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