SI4012-A0-GT 查看數據表（PDF） - Silicon Laboratories

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SI4012-A0-GT

CRYSTAL-LESSFSK/OOK RF TRANSMITTER

Silicon Laboratories 

Si4012

Table 3. Si4012 RF Transmitter Characteristics (Continued)

(TA = 25° C, VDD = 3.3 V, RL = 550 , unless otherwise noted)

Parameter

Transmit Power3

PA Edge Ramp Rate

Programmable Range

Data Rate

Symbol

Test Condition

Min

Typ

Maximum programmed Tx

—

10

power, with optimum differential

load, VDD > 2.2 V

Minimum programmed TX

—

–13

power, with optimum differential

load,

VDD > 2.2 V

Power variation vs temp and –1.0

—

supply, with optimum differential

load, VDD > 2.2 V

Power variation vs temp and –2.5

—

supply, with optimum differential

load, VDD > 1.8 V

Transmit power step size

—

0.25

from –13 to 6.5 dBm

OOK mode

0.34

—

OOK

FSK

0.1

—

0.1

—

Max Unit

—

dBm

—

dBm

0.5

dB

0.5

dB

—

dB

10.7

us

50 kbaud

100 kbaud

Notes:

1. The frequency range is continuous over the specified range.

2. The frequency step size is limited by the frequency noise.

3. Optimum differential load is equal to 4 V/(11.5mA/2 * 4/PI) = 550 Therefore the antenna load resistance in parallel

with the Si4012 differential output resistance should equal 600 

6

Rev 0.1

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