Si4x55-C

6

Rev 1.0

Table 3. Receiver AC Electrical Characteristics

Parameter

Symbol

Test Condition

Min

Typ

Max

Unit

RX Frequency

Range

284

—

350

MHz

350

—

525

MHz

850

—

960

MHz

RX Sensitivity 915 MHz

(BER < 0.1%)

(2.4 kbps, GFSK, BT = 0.5,

—

–115.0

—

dBm

(BER < 0.1%)

(40 kbps, GFSK, BT = 0.5,

—

–107.6

—

dBm

(BER < 0.1%)

(128 kbps, GFSK, BT = 0.5,

—

–103.2

—

dBm

—

–113.5

—

dBm

(BER < 0.1%, 40 kbps, 185 kHz Rx BW,

—

–102.7

—

dBm

RX Channel Bandwidth

BW

40

—

850

kHz

RSSI Resolution

Valid from –110 dBm to –90 dBm

—

±0.5

—

dB

1-Ch Offset Selectivity2

Desired Ref Signal 3 dB above sensitiv-

ity, BER < 0.1%. Interferer is CW and

desired modulated with 1.2 kbps,

F = 5.2 kHz, GFSK with BT = 0.5,

RX BW = 58 kHz

channel spacing = 100 kHz

—

–52

—

dB

2-Ch Offset Selectivity2

—

–56

—

dB

ity, BER < 0.1%. Interferer is CW and

desired modulated with 1.2 kbps

F = 5.2 kHz GFSK with BT = 0.5,

RX BW = 58 kHz

—

–56

—

dB

Blocking 1 MHz Offset2

—

–71

—

dB

Blocking 8 MHz Offset2

—

–77

—

dB

Image Rejection2

Rejection at the image frequency

IF = 468 kHz

—40—

dB

Notes:

1. All minimum and maximum values are guaranteed across the recommended operating conditions of supply voltage and

2.

Conducted measurements on RF evaluation board. Specifications are dependent on frequency, matching components,

and board layout.