AX8052F151

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13

Table 11.

Symbol

Description

Condition

Min

Typ

Max

Units

SBR

Signal bit rate

ASK

1

600

kbps

PSK

10

600

FSK

1

350

802.15.4 (DSSS)

ASK and PSK

1

40

802.15.4 (DSSS)

FSK

1

16

IL

Maximum input level

−20

dBm

Input referred compression point

2 tones separated by 100 kHz

−35

dBm

IIP3

Input referred IP3

−25

RSSIR

RSSI control range

85

dB

RSSI step size

Before digital channel filter; calculated

from register AX5051_AGCCOUNTER

0.625

dB

RSSI step size

Behind digital channel filter; calculated

from registers

AX5051_AGCCOUNTER,

AX5051_TRKAMPL

0.1

dB

Adjacent channel suppression

FSK 50 kbps,

(Notes 1 & 2)

18

dB

Alternate channel suppression

19

Adjacent channel suppression

FSK 100 kbps,

(Notes 1 & 3)

16

dB

Alternate channel suppression

30

Adjacent channel suppression

PSK 200 kbps,

(Notes 1 & 4)

17

dB

Alternate channel suppression

28

Blocking at ± 1 MHz offset

FSK 100 kbps,

(Note 5)

38

dB

Blocking at − 2 MHz offset

40

Blocking at ± 10 MHz offset

60

Blocking at ± 100 MHz offset

82

Image rejection

30

PSK200); both channel and interferer are modulated without shaping

2. FSK 50 kbps: 868 MHz, 200 kHz channel spacing, 25 kHz deviation, programming as recommended in Programming Manual

3. FSK 100 kbps: 868 MHz, 400 kHz channel spacing, 50 kHz deviation , programming as recommended in Programming Manual

4. PSK 200 kbps: 868 MHz, 400 kHz channel spacing, programming as recommended in AX5051 Programming Manual, interfering signal is

a constant wave

is modulated without shaping, the image frequency lies 2 MHz above the wanted signal

Table 12. LOW FREQUENCY CRYSTAL OSCILLATOR

Symbol

Description

Condition

Min

Typ

Max

Units

Crystal frequency

32

150

kHz

Transconductance oscillator

LPXOSCGM = 00110

3.5

ms

LPXOSCGM = 01000

4.6

LPXOSCGM = 01100

6.9

LPXOSCGM = 10000

9.1

Input DC impedance

10

MW