TR8100 데이터 시트보기 (PDF) - RF Monolithics, Inc

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TR8100

916.50 MHz Hybrid Transceiver

RF Monolithics, Inc 

Data Rate (b/s)

1200

2400

4800

9600

19200

38400

57600

115200

230400

CFG1 Bits 3-0

0000

0001

0010

0011

0100

0101

0110

0111

1000

LOSyn Bit 7 - This bit is only used in product testing. It should always be

set to 0 for normal operation. The power-on default value of this bit is 0.

LOSyn Bits 6, 5, 4, 3, 2, 1, 0 -These bits have no function in the TR8100

and can be written as either a logic 1 or a logic 0.

Note that data to/from the configuration registers is clocked in/out most

significant bit first (MSB). See the Control Register Read/Write Detail and

Control Register Read/Write Timing Drawings for additional details.

Receiver Turn-On Timing

The maximum time tPR required for the receive function to become

operational at turn-on is influenced by two factors. All receiver circuitry will

be operational 1 ms after the supply voltage reaches 2.2 Vdc. The

BBOUT-CMPIN coupling-capacitor is then DC stabilized in 4 time con-

stants (4*tBBC). The total turn-on time to stable receiver operation for a

10 ms power supply rise time is:

tPR =15 ms +4*tBBC

Receiver Wake-Up Timing

The maximum transition time tSR from the sleep mode to the receive

mode is 4*tBBC, where tBBC is the BBOUT-CMPIN coupling-capacitor

time constant. When the operating temperature is limited to 60°C,

the time required to switch from sleep to receive is dramatically less

for short sleep times, as less charge leaks away from the BBOUT-CMPIN

coupling capacitor.

AGC Timing

The maximum AGC engage time tAGC is 5 µs after the reception of a

-30 dBm RF signal with a 1 µs envelope rise time.

Peak Detector Timing

The Peak Detector attack time constant is set by the value of the capacitor

at the PKDET pin. The attack time tPKA =CPKD/4167, where

tPKA is in µs and CPKD is in pF. The Peak Detector decay time constant

tPKD = 1000*tPKA.

RF Monolithics, Inc. Phone: (972) 233-2903

Fax: (972) 387-8148

RFM Europe

Phone: 44 1963 251383

Fax: 44 1963 251510

©1999 by RF Monolithics, Inc. The stylized RFM logo are registered trademarks of RF Monolithics, Inc.

E-mail: info@rfm.com

http://www.rfm.com

TR8100-021307

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