LM1872

Manufacturer Part NumberLM1872
DescriptionRadio Control Receiver/Decoder
ManufacturerNational Semiconductor
LM1872 datasheet
 


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Applications
(Continued)
R1
Load decoupling
t
R2
Sync timer R2
R2
470k
e
s
0 7 C6
R3
Preamp decoupling
R5
Photodiode decoupling
C1
Photodiode decoupling
C2
V
bypass
BIAS
C3
V
a
bypass
C4
Load decoupling
C5
IF bypass optional
t
SYNC
C6
Sync timer C6
C6
0 5 F
e
s
0 7 R2
C7
Preamp decoupling
C8
AGC
T1
455 kHz preamp transformer
Toko 10 EZC type (RMC-502182) Qu
e
Pin 1–2 82T pin 2–3 82T
Pin 1–3 164T pin 4-6 30T
T2
455 kHz IF transformer
Toko 10 EZC type (RMC-402503) Qu
e
Pin 1–2 98T pin 2–3 66T
Pin 1–3 164T pin 4–6 8T
T3
455 kHz input transformer
Toko 10 EZC type (RMC-202313) Qu
e
Pin 1–2 131T pin 2–3 33T
Pin 1–3 164T pin 4–6 5T
D1
PN or PIN Silicon Photodiode
Bottom View
FIGURE 9a IR Type Data Link
Photodiode D1
Vactec
VTS 5088
Vactec
VTS 6089
UDT
PIN 6D or 6 DP
UDT
PIN 220 DP
Siemens
BPY 12
110
110
110
FIGURE 9b Input Stage Where the Case of D1 is
Connected to the Anode
12
TL H 7912 – 16
2
Active Area (cm
)
0 18
0 52
0 20
2 0
0 20
TL H 7912 – 17