DATA BULLETIN
MX105A
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FEATURES
Operates in High Noise Conditions
≥36
dB Signal Input Range
High Sensitivity
Low Power Operation 2.7 V to 5.5 V
Adjustable Bandwidth
Adjustable Frequency
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Tone Detector
PRELIMINARY INFORMATION
APPLICATIONS
Single and Multitone System
Applications
C4
R2
4
2
Tone In
C5
R3
3
Input Amp
-
1
V
DD
16
V
DD
/2
C6
+
C3
A
C2
A
7
8
Loop
Filter
- +
Detect
Filter
Timing
Logic
- +
5
6
C2
B
C3
B
11
R4
12
13
VCO
15
14
Detect Counter
MX105A
9
10
C1
B
R1
C1
A
R
L
Detect
Out
The MX105A is a monolithic CMOS tone detector for tone decoding in single and multitone signaling systems. Using
phase locked loop (PLL) decoding techniques, the MX105A recognizes tones in the presence of high noise levels and
strong adjacent channel tones. Detection frequency and bandwidth can each be independently adjusted. The design is
immune to high levels of harmonic and sub-harmonic noise. It also maintains excellent noise immunity and constant
bandwidth over a wide range of input signal levels.
The MX105A requires a voltage supply of 2.7V to 5.5V and is available in the following package styles: 16-pin SOIC
(MX105ADW), 16-pin PDIP (MX105AP), and 24-pin PLCC (MX105ALH).
© 1997 MX•COM, INC.
www.mxcom.com Tele: 800 638 5577 910 744 5050 Fax: 910 744 5054
Doc.# 20480133.003
4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA
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CMLMICRO [ CML MICROCIRCUITS ]
