LM1872

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


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Absolute Maximum Ratings
If Military Aerospace specified devices are required
please contact the National Semiconductor Sales
Office Distributors for availability and specifications
Supply Voltage
Package Dissipation (Note 2)
Voltage
Pin 7 8 9 10 11 or 12
DC Electrical Characteristics
25 C Test Circuit of Figure 1 f
V
a
6V T
e
e
A
Parameter
Conditions
Supply Voltage
Functional for V
Supply Current
CH A
B Off
CH A
B On
V
Pin 4
BIAS
Sync Timer Threshold
Pin 13 Going from
Low to High Voltage
DIGITAL CHANNELS A AND B
Saturation Voltage
Pins 7
Saturation Resistance
Pins 7
Source Current
Pins 8
V
Pin 10 s
Pin 8
Collector Pull-Up
Pin 7
Pin 9 to V
Resistance
Emitter Pull-Down
Pin 8
Pin 10 to GND
Resistance
ANALOG CHANNELS 1 AND 2
Saturation Voltage
Pins 11
Saturation Resistance
Pins 11
Collector Pull-Up
Pin 11
Pin 12 to V
Resistance
AC Electrical Characteristics
Parameter
Conditions
RF Sensitivity
For ‘‘Solid’’ Decoded Outputs
(Note 1)
Circuit of Figure 5
RF Sensitivity
with Antenna Simulation
Network of Figure 6
Voltage Gain
Pin 5 to Pin 15
PSRR of RF Sensitivity
3V
V
a
6V
s
s
BW
3 dB Down
Pin 15
Noise
Referred to Input Pin 5 V
Referred to IF Pin 15 V
AGC Threshold
Onset of AGC Relative to
RF Input V
IN
Relative to IF Output
Mixer Conversion
From Pin 5 to Pin 18
Transconductance
Operating Temperature Range
Storage Temperature Range
Lead Temperature (Soldering 10 sec )
7V
1600 mW
V
a
49 890 MHz f
455 kHz unless otherwise specified
e
e
L0
IF
Min
100 V
2 5
e
IN
9
1 85
V
a
2
0 4
b
9 R
100
e
L
9
10
100
1V
a
5
5
12 R
2 k
e
L
12
a
5
Min
49 MHz
0
e
IN
0
e
IN
Pin 5
Pin 15
V
a
0 07
V
a
1 MHz
2 9
27 MHz
49 MHz
2
25 C to
85 C
b
a
65 C to
150 C
b
a
260 C
Typ
Max
Units
6
7
V
13
18
mA
27
mA
2 1
2 35
V
V
a
2
V
a
2
0 3
V
a
0 4
0 7
V
7
mA
10
20
k
10
20
k
0 45
0 7
V
160
10
20
k
Typ
Max
Units
22
39
V
12
V
58
dB
1
%
V
b
3 2
kHz
0 35
Vrms
0 28
mVrms
88
V
a
0 100
V
a
0 13
V
a
a
4 0
6 9
mmhos
3 7
mmhos
3 5
mmhos