SL6679
RECEIVER CHARACTERISTICS (450MHz)
Receiver Characteristics (450MHz) are guaranteed over the following range of operating conditions unless otherwise stated.
Characteristics are not tested but are guaranteed by characterisation test or design. All measurements made using the
characterisation circuit Fig. 5. See Application Note AN137 for details of test method.
TAMB = 210°C to 155°C, VCC1 = 1·04V to 2·0V, VCC2 = 2·3V to 3·2V, VCC1,VCC220·8V, carrier frequency = 450MHz,
BER = 1 in 30, AFC open loop. LNA gain set such that an RF signal of273dBm at the LNA input, offset from the LO
by 4kHz, gives a typical IF signal level of 300mV p-p at TPI and TPQ. LNA noise figure,2dB
Value
Characteristic
Units
Conditions
Max.
Typ.
Min.
Sensitivity
2128
2126
2123
dBm
2122 dBm
2119 dBm
512bps, Df = 4·5kHz
1200bps, Df = 4·0kHz
2400bps, Df = 4·5kHz. LO = 215dBm
Intermodulation, IP3
Adjacent Channel
57
55
53
dB
dB
dB
512bps, Df = 4·5kHz
1200bps, Df = 4·0kHz
2400bps, Df = 4·5kHz. LO = 215dBm. Channel
spacing 25kHz
50
48
70
69
66
dB
dB
dB
512bps, Df = 4·5kHz
1200bps, Df = 4·0kHz
2400bps, Df = 4·5kHz. LO = 215dBm. Channel
spacing 25kHz
62·5
60
Deviation Acceptance
Up
Down
Up
Down
Up
Down
11·9
22·5
13·0
22·3
12·5
22·3
kHz
kHz
14·6 kHz
21·7 kHz
14·6 kHz
21·7 kHz
512bps, Df = 4·5kHz, no AFC
512bps, Df = 4·5kHz, no AFC
1200bps, Df = 4·0kHz, no AFC
1200bps, Df = 4·0kHz, no AFC
2400bps, Df = 4·5kHz, no AFC
2400bps, Df = 4·5kHz, no AFC
11·8
22·7
11·7
23
Centre Frequency Acceptance
62·8
62·5
62·5
kHz
62·9 kHz
63·2 kHz
512bps, Df = 4·5kHz, no AFC
1200bps, Df = 4·0kHz, no AFC
2400bps, Df = 4·5kHz, no AFC
62·0
62·0
AFC Capture Range (AFC
Closed Loop)
64
63·5
64
kHz
kHz
kHz
512bps, Df = 4·5kHz. All at sensitivity 13dB or above
1200bps, Df = 4·0kHz. All at sensitivity 13dB or above
2400bps, Df = 4·5kHz. All at sensitivity 13dB or above
7