RFFM8511 Datasheet, PDF (5/9 Pages) RF Micro Devices – 4.9GHz to 5.85GHz 802.11a/n/ac WiFi Front End Module

DRAFT
RFFM8511
PRELIMINARY
Switch Control Logic Truth Table
Operating Mode
PA_EN
Standby
Low
802.11a/n/ac TX High Power
High
802.11a/n/ac TX Low Power
High
802.11a/n/ac RX Gain
Low
802.11a/n/ac RX Bypass
Low
Notes:
• PA_EN and TX switch control are tied together internally.
• High = 2.8 to VCC. Low = 0V to 0.2V
Timing Diagram
LNA_EN
Low
Low
Low
High
Low
VCC
PA_EN
Transmit Timing Diagram
Power ON / OFF Sequence
Range is set Per the data sheet
Level is set Per the data sheet
TX RF Signal
LNA_EN
C_RX
RX is Low during TX
RX is Low during TX
DRAFT
C_RX
Low
Low
Low
High
High
Vmode
Low
Low
High
Low
Low
Apply 3.6v to pins
4, 10, and 11
For Transmit: apply
3.1v to pin-6
RF signal ON time is
0.5uS max. Set RF
input to required level.
Both controls must be
OFF during transmit.
The order is not critical.
Apply a max of 0.4v to
pins 15 and 16
Time
0.2uSec
0.2uSec
0.2uSec
0.2uSec
Note1: RF Signal for each specific mode is applied after the DC bias is applied
Note2: Total ON/OFF time includes from 10% of control switching to 90% of RF power
Note3: Listed values on diagram are typical. The maximum is 0.5us for each mode
DRAFT DRAFT ^{RF Micro Devices Inc. 7628 Thorndike Road, Greensboro, NC 27409-9421}
For sales or technical support, contact RFMD at +1.336.678.5570 or [e-mail].
DS140711
The information in this publication is believed to be accurate. However, no responsibility is assumed by RF Micro Devices, Inc. ("RFMD") for its use, nor for any infringement of patents or other rights of
third parties resulting from its use. No license is granted by implication or otherwise under any patent or patent rights of RFMD. RFMD reserves the right to change component circuitry, recommended
application circuitry and specifications at any time without prior notice.
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