Linear Technology DC112A Demo Manual page 2

DEMO MANUAL DC112A
PACKAGE AND SCHEMATIC DIAGRAMS
D1
PHOTODIODE
TEMIC
BPV22NF
C4
330pF
D1
BPV22NF
C1
10nF
330pF
E1 GND
2
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U W
V
CC
1 IN
R
2k
FILTER
2 FILTER
C1
10nF
3 FILTER SWITCH
4 GND
TOP VIEW
IN 1 8
7
FILTER 2
FILTER SWITCH 3 6
GND 4 5
MS8 PACKAGE
8-LEAD PLASTIC MSOP
LT1328CMS8
U1
C6
LT1328CS8
1000pF
1 8
IN SHDN
2 7
FILT MODE
3 6
FILTER
V
CC
SWITCH
4 5
GND DATA
C4
Figure 2a. IrDA Receiver
W
R
FB
50k
1.5V
PREAMP
IN
DC SERVO
+
g
m
60k
–
–
+
Figure 1. LT1328 Block Diagram
V
BIAS
MODE
V
CC
DATA
JP1
1 2 3
V
CC
E2 MODE
E3 V
CC
E4 DATA
+
C2
C3
0.1µF 10µF
DC112A TA01
V 8
BIAS
C6
1000pF
BIAS
MODE 7
5V
V 6
CC
C2
0.1µF
DATA 5
COMP
DC112A BD
TOP VIEW
IN 1 8 V
BIAS
FILTER 2 7 MODE
FILTER
3 6 V
CC
SWITCH
4 5
GND DATA
S8 PACKAGE
8-LEAD PLASTIC SO
LT1328CS8
V
CC
R3
6.3Ω
R1
1/2W
100Ω
5%
Q1
E6 TRANS
2N7002
R2
10k
5%
Figure 2b. IrDA Transmitter
HIGH: SIR
LOW: FIR AND 4PPM
+
C3
10µF
D2
HSDL-4220
Q2
2N7002
E5 GND
DC112A TA02