SA639 Philips Semiconductors (Acquired by NXP), SA639 Datasheet - Page 14

• 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
1
4
500mV
V1 (1) = 0.000V
POSTAMP
OUTPUT
SWITCH
ENABLE
2
2.00V
1
50mV
V2 (1) = 1.609V
2
50mV
Figure 12. SA639 Data Switch Activation Time
Figure 11. SA639 System Dynamic Response
DATA SWITCH OPEN
V (1) = 1.609V
4
1.0V
2 s/div
0.00s
14
50.0ns/
RF = 110MHz
DEV = 288kHz
DATA RATE = 576kHz SINE
LO = 119.8MHz
DATA
SWITCH
OUTPUT
ALL CHANNELS ARE DC COUPLED
V
CC
2
= 3V, T = 27 C
RUN
2
V
SWITCH ENABLE
SWITCH OUTPUT
1
2
SWITCH INPUT = 1.6V
CC
Product specification
= 3V, T = 25 C
SR00040
SA639
SR00041
DC