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M50601P डेटा पत्रक PDF( Datasheet डाउनलोड )


डेटा पत्रक - ELECTRONIC VOLUME CONTROL CMOS 6-BIT D/A CONVERTER - Mitsubishi

भाग संख्या M50601P
समारोह ELECTRONIC VOLUME CONTROL CMOS 6-BIT D/A CONVERTER
मैन्युफैक्चरर्स Mitsubishi 
लोगो Mitsubishi लोगो 
पूर्व दर्शन
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<?=M50601P?> डेटा पत्रक पीडीएफ

M50601P pdf
MITSUBISHI LINEAR ICs
MS0601P
ELECTRONIC VOLUME CONTROL CMOS 6-BIT D/A CONVERTER
FUNCTIONAL DESCRIPTION
Oscillator Circuit
This IC contains an oscillator circuit.. The reference signal is
obtained by mounting a ceramic vibrator and two capaci·
tors at the OSC IN and OSC OUT pins. A typical circuit is
shown in Fig. 1.
M50601 P
OSC IN
OSC OUT
CERAMIC VIBRATOR, CSB 480A
(MADE BY MURATA SEISAKUSHOI
CLI • CLO : 100pF
Memory Function
When a pulse signal such as that shown in Fig. 2 is applied
to the MEMORY pin, the contents of the 6-bit up/down
counter are stored in the memory.
Voo
Vss
~I
a : GREATER
THAN lOOms.
Fig. 2 MEMORY pin input waveform
o
Fig. 1 Typical oscillator circuit (using ceramic vibrator)
Up/Down Function
Every time a high-level signal is applied to the UP pin, the
contents of the 6-bit up/down counter increase by one step.
When "63" has been reached, no further increase is
possible.
When a high-level signal is kept applied to the UP pin for
more than 0.41 - 0.52 sec, the contents of the 6-bit
up/down counter increase at a rate of approximately 9.77
steps/sec. Until "63" has been reached.
Every time a high-level signal is applied to the DOWN
pin, the contents of the 6-bit up/down counter decrease by
one step. When "0" has been reached, no fu rther decrease is
possible.
When a high-level signal is kept applied to the DOWN pin
for more than 0.41 - 0.52 sec, the contents of the 6-bit
up/down counter decrease at a rate of approximately 9.77
steps/sec. Unti I "0" has been reached.
When high-level signals are applied to both the UP and
DOWN pins, the contents of the 6-bit up/down counter do
not change.
A chatter-prevention circuit is added to inhibit reading
when high-level signals of less than 25 - 50ms are applied
to the UP and DOWN pins.
Preset Function
When a pulse signal such as that shown in Fig. 3 is applied
to the L pin with the PRESET pin and M pin both low, the
contents of the 6-bit up/down counter are preset to "0".
When a pulse signal such as that shown in Fig. 3 is applied
to the M pin with the PRESET pin and L pin both low, the
contents of the 6-bit up/down counter are preset to "32".
When a pulse signal such as that shown in Fig. 3 is applied
to the PRESET pin with the M and L pins both low, the
contents of the 6-pin up/down counter are preset by the
memory contents.
_IVoo
Vss
·1,---~-I
a : GREATER
_ __ __
THAN lOOms.
Fig. 3 L pin/M pin/PRESET pin input waveform
Reset Function
This is a function used for testing. When a high-level signal
is applied to the RESET pin, the frequency divider
(480kHz - 4.88Hz) is reset.
D/A Output
This IC contains a 6-bit D/A converter which can control
analogue quantities in 64 steps.
A pulse width modulated signal having a minimum pulse
width of 12.5/lS is output with a repeat frequency of
1.25kHz.
When the mode is set to auto up or auto down through
the UP pin or DOWN pin operation, the analogue quantity
can be increased or decreased at a rate of approximately
9.77 steps/sec. Consequently, the time required to set the
analogue quantity from the minimum to maximum value,
or vice versa, is approximately 6.45 sec.
Note: It is necessary to do the initial reset to the UP/
DOWN counter and the memory after power on.
2-84
• MITSUBISHI
"ELECTRIC

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