RF3858

3.0 V TO 4.2V, ISM BAND TRANSMIT/RECEIVE

MODULE WITH DIVERSITY TRANSFER SWITCH

trademarks are the property of their respective owners. ©2009, RF Micro Devices, Inc.

DS130424

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

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

3 of 11

Transmit/receive Switch

Frequency Range

868

902 to 928

MHz

Insertion Loss

TX to ANT1 or ANT2

0.85

1.4

dB

RX to ANT1 or ANT2

.95

1.4

dB

Any Path (1800MHz to 1860MHz)

2

dB

Any Path (2700MHz to 2790MHz)

2

dB

Any Path (>3600MHz)

15

dB

Isolation (All Paths)

18

dB

Input IP3

55

dBm

Thermal Resistance

47.8

°C/W

Output Harmonic Levels

-60

dBc

-80

dBc

Input 1dB Gain Compression

30

32

dBm

Return Loss (All Ports)

18

dB

Active ports only

Switch Control Logic HIGH

2.6

3.5

V

Switch Control Logic LOW

0

0.2

V

Switch Control Current

5

µA

VTX2, VRX1, and VRX2

40

µA

VTX1

Transition Time

2

µs

Settle to 0.25dB of final value

Connected Path

RX SW to ANT1

RX SW to ANT2

TX SW to ANT1

TX SW to ANT2

VRX1

High

Low

Low

Low

VRX2

Low

High

Low

Low

VTX1

Low

Low

High

Low

VTX2

Low

Low

Low

High

*Switch Control Logic High=Min 2.6V to Max 3.5V

*Switch Control Logic Low-Min 0.0V to Max 0.2V