Freescale Semiconductor, Inc.
Order this document by MC3374/D
Low Voltage FM
Narrowband Receiver
. . . with single conversion circuitry including oscillator, mixer, IF amplifiers,
limiting IF circuitry, and quadrature discriminator. The MC3374 is perfect for
narrowband audio and data applications up to 75 MHz which require
extremely low power consumption. Battery powered applications down to
VCC = 1.1 V are possible. The MC3374 also includes an on–board voltage
regulator, low battery detection circuitry, a receiver enable allowing a power
down Sleep–Mode™, two undedicated buffer amplifiers to allow
simultaneous audio and data reception, and a comparator for enhancing
FSK (Frequency Shift Keyed) data reception to 1200 baud.
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Low Supply Voltage: VCC = 1.1 to 3.0 Vdc
MC3374
LOW VOLTAGE
SINGLE CONVERSION
FM RECEIVER
SEMICONDUCTOR
TECHNICAL DATA
ARCHIVE INFORMATION
Freescale Semiconductor, Inc...
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Low Power Consumption: PD = 1.5 to 5.0 mW
Input Bandwidth 75 MHz
Excellent Sensitivity: 0.5
µVrms
for 12 dB SINAD
Voltage Regulator Available (Source Capability 3.0 mA)
Receiver Enable to Allow Active/Standby Operation
Low Battery Detection Circuitry
Self Biasing Audio Buffer
Data Buffer
FSK Data Shaping Comparator
Standard 32–Lead QFP Surface Mount Package
ORDERING INFORMATION
Device
Tested Operating
Temperature Range
Package
TQFP–32
FTB SUFFIX
PLASTIC PACKAGE
CASE 873
(Thin QFP)
32
1
Sleep–Mode is a trademark of Motorola, Inc.
MC3374FTB TA = – 10° to +70°C
Simplified Block Diagram
Data Data
Osc Mixer Mixer Mixer 2nd IF Buffer Buffer 1st IF
Dcpl
In
Out Dcpl
In
Out
In
Out
32
31
30
29
28
27
26
25
Osc Base
Osc Emit
Isrc Dcpl
IF Gnd
VCC2
Rec Audio
1
2
3
4
5
6
Low
Pass
Filter
Quadrature
Demodulator
Mixer
2nd IF
Data
Buffer
24 VCC3
1st IF
23 1st IF In
Audio
Buffer
22 Audio Buffer Out
21 Audio Buffer In
Low
Battery
Detector
20 Low Battery Detector
19 1.2 V Select
18 VCC
Voltage
Reference
Output
Demodulator Decoupling 7 Buffer
Quad Tank
8
Main
Current
Reference
Comp.
Receiver
Enable
Voltage
Reference
17 Vreg
9
*Internal Connection, do not ground.
10
11
12
13
14
15
16
Quad Demod *N/C
Tank Gnd
*N/C Comp Comp Rec Regulator
I/P
O/P Enable Reference
Test
This device contains 87 active transistors
©
Motorola, Inc. 1996
Rev 0
MOTOROLA ANALOG IC DEVICE DATA
For More Information On This Product,
1
Go to: www.freescale.com
ARCHIVE INFORMATION
FREESCALE [ FREESCALE SEMICONDUCTOR, INC ]
