CXA1999 SONY [Sony Corporation], CXA1999 Datasheet - Page 15

• Manufacturer Part Number: CXA1999
• Description: IF Amplifier for M-ary FSK Pagers
• Manufacturer: SONY [Sony Corporation]

Example of Representative Characteristics
10
20
30
40
50
0
–120
–110
DET OUT
RF input level vs. Audio response, RSSI characteristics for 1.6 kHz SIN signal
Filter constants of the graph above
–100
39k
–90
1200P
39k
RF input level (dBm)
–80
39k
—15—
–70
560P
11
2200P
–60
12
V
0dB=50mVrms
Data filter 2.3 kHz
RF
LO
N
CC
fc: 2.3kHz
: 1.4V
–50
21.7MHz
4.8k Dev.
1.6k AUDIO
21.245MHz
–10dBm
LPF OUT
Matching circuit is used
S+N+D
RSSI
–40
–30
0
1000
800
600
400
200
CXA1999N