CMX661 データシートの表示（PDF） - CML Microsystems Plc
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CMX661 Datasheet PDF : 16 Pages
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Pair Gain Dual SPM Detector
CMX661
1.3 Signal List
Package Package
D4
P3
Signal
Description
Pin No. Pin No.
Name
Type
1
1
XTAL
I/P
The input of the on-chip oscillator for use with a
3.579545MHz Xtal in conjunction with the
XTALN output; circuit components are on-chip.
2
2
XTALN
O/P The inverted output of the on-chip oscillator.
3
3
CH2 OP
O/P The digital output of the Channel 2 SPM
detector, when enabled. Logic '0' (low) when
tone is detected.
4
4
CH1 OP
O/P The digital output of the Channel 1 SPM
detector, when enabled. Logic '0' (low) when
tone is detected.
5
5
CH1 AMP OUT
O/P The output of the Channel 1 input amplifier.
See Figures 2 and 3.
6
6
CH1 AMP IN (-)
I/P
The negative input to the Channel 1 input
amplifier. See Figures 2 and 3.
7
7
CH1 AMP IN (+)
I/P
The positive input to the Channel 1 Input
amplifier. See Figures 2 and 3.
8
8
VSS
POWER The negative supply rail (ground).
9
9
CH2 AMP IN (+)
I/P
The positive input to the Channel 2 input
amplifier. See Figures 2 and 3.
10
10
CH2 AMP IN (-)
I/P
The negative input to the Channel 2 input
amplifier. See Figures 2 and 3.
11
11
CH2 AMP OUT
O/P The output of the Channel 2 input amplifier.
See Figures 2 and 3.
12
12
OP ENABLEN
I/P
For multi-chip output multiplexing; controls the
state of both Channel 1 and Channel 2 outputs.
When this input is placed high (logic ‘1’) both
outputs are set to a high impedance. When
placed at logic '0' (low) both outputs are
enabled.
13
13
D0
I/P
The LSB of the two bits which set the 'Will
Decode' bandwidth of the CMX661.
© 2002 CML Microsystems Plc
4
D/661/3
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