RF2948B Просмотр технического описания (PDF) - RF Micro Devices

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RF2948B

2.4GHz SPREAD-SPECTRUM TRANSCEIVER

RF Micro Devices 

RF2948B

State Decode Table

Sleep Mode

Receive Mode

Transmit Mode

Input Pins

PD

RX EN

0

x

1

1

1

0

Internally Decoded Signals

BB EN RXIF EN TXRF EN

0

0

0

1

1

0

1

0

1

NOTES

BB_EN Enables:

RXIF_EN Enables:

TXRF_EN Enables:

NOT

TX_LPF’s and buffers

Quad Demodulator mixers

Baseband Amps and gm-C LPF’s

S IF LO buffer/phase splitters

N Front-end IF amplifier (RX)

G RX IF VGA amplifiers

SI Front-end IF amplifier (TX)

E TX VGA

D RF upconverter and buffer

PA driver

RF LO buffer

NEW Quad Modulator mixers

FOR

11-246

Rev A6 040930

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