srf-2724cs RF Micro Devices, srf-2724cs Datasheet - Page 24

• Manufacturer Part Number: srf-2724cs
• Description: 2.4ghz Low-if 1.5mbps Fsk Transceiver
• Manufacturer: RF Micro Devices

SRF-2724CS
Table 17: Power Amplifier Timing
RF Interface: RXI and TXO/TXOB
The RXI receive input (pin 17) and the TXO/TXOB differential transmit outputs (pins 21 and 22) are the only RF I/O pins. The
RXI pin requires a simple impedance matching network for optimum input noise figure. The TXO/TXOB pins require a matching
network for maximum power output into the RF power amp. If a single ended output is preferred, the signal from the TXO pin
can be matched to the power amp and the TXOB output can be shunted to a power supply through a dummy load. The RF input
and output ground (pin 18) must have a direct connection to the RF ground plane, and the RF power supply pins must be
decoupled to the same ground plane as close to the device as possible.
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Symbol
T1
T2
T3
T4
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RXON rising edge to PLL frequency shift
RXON falling edge to PAON rising edge
RXON rising edge to PAON falling edge
RXON rising edge to RECEIVE mode
Parameter
Proposed
Time/μS
62.5
<0.1
6.5
Prelim DS090410
70