CC1020-RTR1 datasheet(11/91 Pages) TI

11 / 91 page

CC1020

SWRS046

Page 11 of 92

4.3.

RSSI / Carrier Sense Section

Parameter

Min

Typ

Max

Unit

Condition / Note

RSSI dynamic range

12.5 and 25 kHz channel spacing

RSSI accuracy

± 3

See section 12.5 on page 33 for

details.

RSSI linearity

± 1

RSSI attach time

2.4 kBaud, 12.5 kHz channel spacing

4.8 kBaud, 25 kHz channel spacing

153.6 kBaud, 500 kHz channel spacing

3.8

1.9

140

µs

Shorter RSSI attach times can be

traded for lower RSSI accuracy.

See section 12.5 on page 33 for

details.

Shorter RSSI attach times can

also be traded for reduced

sensitivity and selectivity by

increasing the receiver channel

filter bandwidth.

Carrier sense programmable range

Accuracy is as for RSSI

Adjacent channel carrier sense

12.5 kHz channel spacing

25 kHz channel spacing

-72

dBm

At carrier sense level −110 dBm,

FM jammer (1 kHz sine, ±2.5 kHz

deviation) at adjacent channel.

Adjacent channel carrier sense is

measured by applying a signal on

the adjacent channel and observe

at which level carrier sense is

indicated.

Spurious carrier sense

-70

dBm

At carrier sense level −110 dBm,

100 MHz – 2 GHz. Adjacent

channel and image channel are

excluded.

Table 5. RSSI / Carrier sense parameters

4.4.

IF Section

Parameter

Min

Typ

Max

Unit

Condition / Note

Intermediate frequency (IF)

307.2

kHz

See section 12.1 on page 30 for

details.

Digital channel filter bandwidth

9.6

307.2

kHz

The channel filter 6 dB bandwidth

is programmable from 9.6 kHz to

307.2 kHz. See section 12.2 on

page 30 for details.

AFC resolution

150

At 2.4 kBaud

Given as Baud rate/16. See

section 12.13 on page 41 for

details.

Table 6. IF section parameters

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