SPIRIT1 datasheet(16/94 Pages) STMICROELECTRONICS

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Characteristics

SPIRIT1

16/94

Doc ID 022758 Rev 3

6.2.3

RF receiver

Characteristics measured over recommended operating conditions unless otherwise

specified. All typical values are referred to TA = 25 °C, VBAT = 3.0 V, no frequency offset in

the RX signal. All performance is referred to a 50 Ohm antenna connector, via the reference

design.

VOH

High level output voltage

IOH = -2.4 mA (-4.2 mA if

high output current

capability is

programmed).

(5/8)*

VDD+

0.1

VOL

Low level output voltage

IOL = +2.4 mA (+4 mA if

high output current

capability is

programmed).

0.5

Table 9.

Digital SPI input and output (SDO, SDI, SCLK, CSn, and SDN) and GPIO

specification (GPIO_1-4) (continued)

Symbol

Parameter

Test condition

Min.

Typ.

Max.

Unit

Table 10.

RF receiver characteristics

Symbol

Parameter

Test condition

Min.

Typ.

Max.

Unit

Return loss

169.4-169.475 MHz, 433-435

MHz, 868-868.6 MHz, 310-320

MHz, 902-928 MHz(1)

-10

CHBW

Receiver channel bandwidth

800

kHz

RXSENS

Sensitivity, 1% BER

(according to W-MBUS N

mode specification)

169MHz 2-FSK 1.2kbps

(4 kHz dev. CH Filter=10kHz)

-117

dBm

169MHz 2-GFSK (BT=0.5)

2.4kbps (2.4 kHz dev. CH

Filter=7kHz)

-115

dBm

169MHz 2-FSK 38.4kbps (50 kHz

dev. CH Filter=100 kHz)

-104

dBm

169MHz 2-GFSK (BT=0.5)

50kbps (25 kHz dev. CH

Filter=100 kHz)

-104

dBm

Sensitivity, 1% PER (packet

length = 20 bytes) FEC

DISABLED

315MHz 2-FSK 1.2 kbps (5.2 kHz

dev. CH Filter=58 kHz)

-109

dBm

315MHz MSK 500 kbps (CH

Filter=800 kHz)

-88

dBm

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