Low Power Narrowband FM Receiver
Order this document by MC3335/D
Low Power Narrowband FM Receiver
. . . includes dual FM conversion with Oscillators, Mi...
Description
Order this document by MC3335/D
Low Power Narrowband FM Receiver
. . . includes dual FM conversion with Oscillators, Mixers, Quadrature
Discriminator, and Meter Drive/Carrier Detect Circuitry. The MC3335 also
has a comparator circuit for FSK detection.
Complete Dual Conversion Circuitry Low Voltage: VCC = 2.0 to 6.0 Vdc Low Drain Current (Typical 3.6 mA with VCC = 3.0 Vdc) Excellent Sensitivity: – 3.0 dB Input Limiting = 0.7 µV Externally Adjustable Carrier Detect Function Separate Data Shaping Output Circuitry Data Rate Up to 35000 Baud Detectable 60 dB RSSI Range Low Number of External Parts Required Manufactured in Motorola′s MOSAIC® Process Technology MC13135 is Preferred for New Designs
MC3335
LOW POWER DUAL CONVERSION
FM RECEIVER
SEMICONDUCTOR TECHNICAL DATA
P SUFFIX PLASTIC PACKAGE
CASE 738
DW SUFFIX PLASTIC PACKAGE
CASE 751D (SO–20L)
Simplified Application as a Fixed Receiver
PIN CONNECTIONS
RF Input
0.01
49.7 MHz 120 pF
50 pF
10.245 MHz
Ceramic Filter
455 kHz
0.1 0.1 0.1
200 k 10 k
1 2 3 4 5 VCC 6 7 Limiter 8 9 10
To Carrier Detect Indicator
0.01 20
19
33 pF
0.41 µH
18
Ceramic Filter 17 10.7 MHz
VCC
16 1.0 +
15 0.1
10 k 14
Data
13 0.001
12 Recovered Audio
11 39 K
Lp = 660 µH Cp = 180 pF
1st Mixer Input 1 2nd Lo Emitter 2
2nd Lo Base 3 2nd Mixer Output 4
VCC 5 Limiter Input 6 Limiter Decoupling 7 Limiter Decoupling 8 Meter Drive 9 Carrier Detect 10
LIMITER
20 1st Mixer Input 19 1st Lo Tank 18 1st Lo Tank 17 1st Mixer Outp...
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