CM5018
(Preliminary)
Low Power Narrowband FM IF
The
CM5018
includes an Oscillator, Mixer, Limiting Amplifier,
Quadrature Discriminator, Active Filter, Squelch, Scan Control and Mute
Switch. This device is designed for use in FM dual conversion
communications equipment.
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Operates from 2.0 to 8.0 V Supply
Low Drain Current 2.8 mA Typical @ VCC = 4.0 Vdc
Excellent Sensitivity: Input Limiting Voltage –
– 3.0 dB = 2.6
µV
Typical
Low Number of External Parts Required
Operating Frequency Up to 60 MHz
Full ESD Protection
Representative Block Diagram
Mixer
Input
16
Scan
Control
13
Squelch
In
12
Filter
Output
11
Filter Recovered
Input
Audio
10
–
Filter
Amp
Squelch Trigger with
Hysteresis
+
AF
Amp
9
Gnd
15
Mute
14
Demodulator
Mixer
1.8 k
Oscillator
1.8 k
1
Crystal
Osc
2
3
Mixer
Output
4
VCC
5
Limiter
Input
6
7
8
Quad
Coil
Limiter
Amp
50 k
10 pF
52 k
Decoupling
This device contains 92 active transistors.
* All specs and applications shown above subject to change without prior notice.
1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN
Tel:886-3-3214525
Fax:886-3-3521052
Page
1
of 6
Email: server@ceramate.com.tw
Http: www.ceramate.com.tw
Rev 0.2 Fev.13,2004
CERAMATE [ CERAMATE TECHNICAL ]
