SA639 Philips Semiconductors (Acquired by NXP), SA639 Datasheet - Page 13

• Manufacturer Part Number: SA639
• Description: SA639; Low Voltage Mixer FM if System With Filter Amplifier And Data Switch;; Package: SOT355-1 (TSSOP24)
• Manufacturer: Philips Semiconductors (Acquired by NXP)

Philips Semiconductors
1998 Feb 10
Low voltage mixer FM IF system with filter amplifier
and data switch
1
200mV
t1 = –1.36.0 s
t1 = –376.0ns
1
200mV
2
5.00mV
2
t2 = 440.0ns
5.00mV
t2 = 412.0ns
t = 1.800 s
–1.36us
Figure 10. SA639 RSSI Fall Time
Figure 9. SA639 RSSI Rise Time
500ns/
t = 788.0ns
–376ns
13
1/ t = 555.6kHz
200ns/
1/ t = 1.269MHz
1
1
RUN
RUN
RSSI OUTPUT
t
10%
PULSE
MODULATED
@ 10kHz
f
RSSI OUTPUT
t
2
2
r
PULSE MODULATED @ 10kHz
= 1.89 s
= 0.79 s
RF INPUT
LEVEL = -28dBm
RF INPUT
LEVEL = -28dBm
Product specification
SA639
f = 110MHz
f = 110MHz
SR00038
SR00039