MRF89XAM9A-I/RM【PDF 26/34 页】IC TXRX MOD 915MHZ ULP SUB-GHZ

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MRF89XAM9A

TABLE 4-5:

RECEIVER AC CHARACTERISTICS (1)

Symbol

RSF

Parameter

Sensitivity (FSK)

Min

—

Typ

-105

Max

—

Unit

dBm

Condition

915 MHz, BR = 25 kbps,

f dev = 50 kHz, f c = 100 kHz

—

-101

—

dBm

915 MHz, BR = 66.7 kbps,

f dev = 100 kHz, f c = 200 kHz

RSO

Sensitivity (OOK)

—

-111

—

dBm

915 MHz, 2 kbps NRZ

f c – f o = 50 kHz, f o = 50 kHz

—

-105

—

dBm

915 MHz, 16.7 kbps NRZ

f c – f o = 100 kHz, f o = 100 kHz

CCR

ACR

Co-Channel Rejection

Adjacent Channel Rejection

—

—

-12

27

—

—

dBc

dB

Modulation as wanted signal

Offset = 300 kHz, unwanted tone is

not modulated

—

52

—

dB

Offset = 600 kHz, unwanted tone is

not modulated

—

57

—

dB

Offset = 1.2 MHz, unwanted tone is

not modulated

BI

Blocking Immunity

—

—

-48

-37

—

—

dBm

dBm

Offset = 1 MHz, unmodulated

Offset = 2 MHz, unmodulated, no

SAW

—

-33

—

dBm

Offset = 10 MHz, unmodulated, no

SAW

RXBWF

Receiver Bandwidth in FSK

50

—

250

kHz

Single side BW, Polyphase Off

Mode (2)

RXBWU

Receiver Bandwidth in OOK

50

—

400

kHz

Single side BW, Polyphase On

Mode (2)

ITP3

Input Third Order Intercept

—

-28

—

dBm

Interferers at 1 MHz and 1.950 MHz

Point

offset

TSRWF

TSRWS

TSRHOP

RSSIST

RSSTDR

Receiver Wake-up Time

Receiver Wake-up Time

Receiver Hop Time from Rx

Ready to Rx Ready with a

Frequency Hop

RSSI Sampling Time

RSSI Dynamic Range

—

—

—

—

—

—

—

—

—

—

—

280

600

400

400

460

480

520

550

600

—

70

500

900

—

—

—

—

—

—

—

1/ f dev

—

μs

μs

μs

μs

μs

μs

μs

μs

μs

s

dB

From FS to Rx ready

From Stand-by to Rx ready

200 kHz step

1 MHz step

5 MHz step

7 MHz step

12 MHz step

20 MHz step

27 MHz step

From Rx ready

Ranging from sensitivity

Note 1:

2:

Guaranteed by design and characterization.

This reflects the whole receiver bandwidth, as described by conditions for active and passive filters.

DS75017A-page 24

Preliminary

? 2011 Microchip Technology Inc.

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