CM5018 Datasheet, PDF (1/6 Pages) Ceramate Technical – Low Power Narrowband FM IF

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.
• 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
Scan Squelch Filter Filter Recovered
Input _{Gnd Mute} Control In Output Input Audio
16
15
14
13
12
11
10
9
Squelch Trigger with
Hysteresis
–
Filter
Amp
AF
Amp
+
Demodulator
Mixer
1.8 k
Oscillator
1
2
3
4
Limiter
Amp
50 k
1.8 k
5
6
7
Crystal
Osc
Mixer VCC Limiter
Output
Input
Decoupling
This device contains 92 active transistors.
10 pF
52 k
8
Quad
Coil
* All specs and applications shown above subject to change without prior notice.
1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN Email: [e-mail]
Tel:[phone]
Http: www.ceramate.com.tw
Fax:[phone]
Page 1 of 6
Rev 0.2 Fev.13,2004