TRF4903

SINGLECHIP MULTIBAND RF TRANSMITTER

SWRS023B − MAY 2004 − REVISED MARCH 2005

7

POST OFFICE BOX 655303

transmitter (XTAL, PLL, VCO, and PA), 868-MHz band

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

TX frequency range

A<1:0> = 11

868

869

870

MHz

0-dB attenuation

8

Output power†

10-dB attenuation

−2

dBm

Output power†

20-dB attenuation

−12

dBm

Disabled, B<3> = 0

−80

Second harmonic

−25

dBc

Third harmonic

−30

dBc

DCLK spurious at fC ± fDCLKw

DCLK active: E<15> = 1,

E<12:11> = 01

−28

dBc

Frequency deviation‡

FSK

32

kHz

Power ON-OFF ratio

OOK, 0-dB mode

75

dB

Maximum data rate (NRZ)

FSK

64

kbit/s

Maximum data rate (NRZ)

OOK

32

kbit/s

† Matched to 50 Ω using external matching network.

‡ Dependent upon external circuitry.

§ This spur is only present if DCLK is active. The resulting spur is within modulation (OOK or FSK) bandwidth and is considered a modulation

product. Within the authorized bands, this spur does not violate FCC or ETSI regulatory compliance.

transmitter (XTAL, PLL, VCO, and PA), 915-MHz band

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

TX frequency range

A<1:0> = 11

902

915

928

MHz

0-dB attenuation

8

Output power†

10-dB attenuation

−2

dBm

Output power†

20-dB attenuation

−12

dBm

Disabled, B<3> = 0

−80

Second harmonic

−25

dBc

Third harmonic

−30

dBc

DCLK spurious at fC ± fDCLKw

DCLK active: E<15> = 1,

E<12:11> = 01

−28

dBc

Frequency deviation‡

FSK

32

kHz

Power ON-OFF ratio

OOK, 0-dB mode

75

dB

Maximum data rate (NRZ)

FSK

64

kbit/s

Maximum data rate (NRZ)

OOK

32

kbit/s

† Matched to 50 Ω using external matching network.

‡ Dependent upon external circuitry.

§ This spur is only present if DCLK is active. The resulting spur is within modulation (OOK or FSK) bandwidth and is considered a modulation

product. Within the authorized bands, this spur does not violate FCC or ETSI regulatory compliance.