MC3374 Datasheet, PDF (1/8 Pages) Motorola, Inc – Low Voltage FM Narrowband Receiver

Freescale Semiconductor, Inc. Order this document by MC3374/D
Low Voltage FM
Narrowband Receiver
MC3374
. . . 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.
• Low Supply Voltage: VCC = 1.1 to 3.0 Vdc
• 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
Sleep–Mode is a trademark of Motorola, Inc.
LOW VOLTAGE
SINGLE CONVERSION
FM RECEIVER
SEMICONDUCTOR
TECHNICAL DATA
32
1
FTB SUFFIX
PLASTIC PACKAGE
CASE 873
(Thin QFP)
ORDERING INFORMATION
Device
Tested Operating
Temperature Range
Package
MC3374FTB TA = – 10° to +70°C TQFP–32
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 1
Osc Emit 2
Isrc Dcpl 3
IF Gnd 4
Mixer
2nd IF
Data
Buffer _{1st IF}
Audio
Buffer
Voltage
Reference
24 VCC3
23 1st IF In
22 _{Audio Buffer Out}
21 Audio Buffer In
VCC2 5
Low
Rec Audio 6
Pass
Output
Filter
Demodulator Decoupling 7 ^Buffer
Quadrature
Quad Tank 8
Demodulator
Main
Current
Reference
Comp.
Low
Battery
Detector
20 Low Battery Detector
19 1.2 V Select
Receiver
Enable
Voltage
Reference
18 VCC
17 Vreg
*Internal Connection, do not ground.
9 10 11 12 13 14 15 16
Quad Demod *N/C *N/C Comp Comp Rec Regulator
Tank Gnd
I/P O/P Enable Reference
Test
This device contains 87 active transistors
© Motorola, Inc. 1996
MOTOROLA ANALOG IC DEVICE_FD_oA_rT_MA _{ore Information On This Product,}
Go to: www.freescale.com
Rev 0
1