FX631 Consumer Microcircuits Limited, FX631 Datasheet - Page 3

• Manufacturer Part Number: FX631
• Description: Low-voltage Spm Detector
• Manufacturer: Consumer Microcircuits Limited

Application Inf
Application Inf
Application Information
External Components
External Components
External Components
Application Inf
Application Inf
External Components
External Components
Fig.2 Recommended External Components - Differential Input Mode
Differential Input
Fig.3 Example Input Configurations
Component
Component
Component
Component
Component
Tip (a)
Ring (b)
For use with a Clock Pulse input
- Remove Xtal (X
- Connect Pin 1 to V
- Remove link (Pins 3/4)
- Input clock pulses to CLOCK IN
R
R
R
R
C
C
C
C
X
XTAL/CLOCK
CLOCK IN
1
1
2
3
4
1
2
3
4
1
)
ormation
ormation
ormation
ormation
DD
V
SS
C
X
2
3.579545MHz
1
1.0µF ±20%
1.0µF ±20%
CLOCK OUT
XTAL/CLOCK
R
INPUT AMP
V
+
CLOCK IN
-
FEEDBACK
BIAS
Value
Value
Value
Value
Value
R
C
R
R
C
IN (+)
IN (+)
IN (-)
BIAS
IN (-)
XTAL
V
BIAS
V
SS
1
2
3
4
5
6
7
8
FX631DW
V
DD
V
SS
3
External Components
External Components
External Components
1. The values of the Input Amp gain components
2. Refer to following pages for advice on Microcircuit
External Components
External Components
Common Mode Input
illustrated are calculated using the Input Gain
Calculation Graphs (Figures 4 and 5).
Whilst calculating input gain components, for
correct operation, it is recommended that the values
of resistors R
equal to, 33k .
Protection from high and spurious line voltages.
16
15
14
13
12
10
11
9
AMP OUT
SIGNAL IN (-)
SIGNAL IN (+)
SYSTEM
TONE FOLLOWER OUTPUT
PACKET MODE OUTPUT
R
V
4
DD
1
V
and R
SS
4
V
SS
are always greater than, or
INPUT AMP
V
C
R
+
-
R
BIAS
1
3
1
R
2
C
C
3
4