RF2705GPCBA-41X View Datasheet(PDF) - RF Micro Devices

Part Name

Description

MFG CO.

RF2705GPCBA-41X

LOW NOISE, MULTI-MODE, QUAD-BAND, QUADRATURE MODULATOR AND PA DRIVER

RF Micro Devices 

Prev 11 12 13 14 15 16 17 18 19 20 Next

RF2705G

Pin Function Description

Interface Schematic

13

RF OUT

Differential low band PA driver amplifier output.

LB N

This output is intended for low band (GSM850/900) operation and drives a

differential SAW.

A bypass mode allows the low band PA driver amplifier’s input to be

switched between the signal from the modulator and the signal applied at

LOLB. This enables a GMSK-modulated signal on the LOLB input to be

switched into the RF signal path.

The output is an open collector. The outputs are matched off-chip.

VCC

VCC VCC

RF OUT LB P

RF OUT LB N

14

RF OUT

Complementary differential low band PA driver amplifier output.

LB P

See pin 13.

See pin 13.

15

RF OUT

Differential high band PA Driver amplifier output.

HB N

This output is intended for DCS1800/PCS1900 band operation.

A bypass mode allows the high band PA driver amplifier’s input to be

switched between the signal from the modulator and the signal applied at

LOHB. This enables a GMSK-modulated DCS1800/PCS1900 signal on the

LOHB input to be switched into the RF signal path.

The output is an open collector. The outputs are matched off-chip.

VCC

VCC VCC

RF OUT HB P

RF OUT HB N

16

RF OUT

Complementary differential high band PA driver amplifier output.

HB P

See pin 15.

17

RF OUT

Differential high band PA driver amplifier output.

WB N

This output is intended for wide band (W-CDMA) applications.

The output is an open collector. The output are matched off-chip.

See pin 15.

VCC

VCC VCC

RF OUT WB P

RF OUT WB N

18

RF OUT

Complementary differential wideband PA driver amplifier output.

WB P

See pin 17.

19

GND

Ground.

20

MODE A Mode control pin. See the Logic Truth table.

CMOS Logic inputs: Logic 0=0V to 0.4V; Logic 1=1.4V to VCC.

21

VCC1

Supply for modulator, VGA and PA driver amplifiers.

See pin 17.

See pin 6.

VCC1

LO Quadrature

Generator and

Buffers

GND1

16 of 26

7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical

support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.

Rev A0 DS060206

Share Link: