pcd3312cp NXP Semiconductors, pcd3312cp Datasheet - Page 3

• Manufacturer Part Number: pcd3312cp
• Description: Dtmf/modem/musical-tone Generators
• Manufacturer: NXP Semiconductors

Philips Semiconductors
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2
The PCD3311C and PCD3312C are single-chip silicon
gate CMOS integrated circuits. They are intended
principally for use in telephone sets to provide the
dual-tone multi-frequency (DTMF) combinations required
for tone dialling systems. The various audio output
frequencies are generated from an on-chip 3.58 MHz
quartz crystal-controlled oscillator. A separate crystal is
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1996 Nov 21
V
I
I
V
V
G
THD
T
PCD3311CP
PCD3311CT
PCD3312CP
PCD3312CT
SYMBOL
TYPE NUMBER
DD
stb
DTMF, modem and musical tone generation
Stabilized output voltage level
Low output distortion with on-chip filtering conforming to
CEPT recommendations
Latched inputs for data bus applications
I
Selection of parallel or serial (I
(PCD3311C).
amb
DD
HG(RMS)
LG(RMS)
DTMF/modem/musical-tone generators
v
2
C-bus compatible
FEATURES
GENERAL DESCRIPTION
QUICK REFERENCE DATA
ORDERING INFORMATION
operating supply voltage
operating supply current
standby current
DTMF HIGH group output voltage level (RMS value)
DTMF LOW group output voltage level (RMS value)
pre-emphasis (voltage gain) of group
total harmonic distortion
operating ambient temperature
NAME
DIP14
SO16
DIP8
SO8
2
plastic dual in-line package; 14 leads (300 mil)
plastic small outline package; 16 leads; body width 7.5 mm
plastic dual in-line package; 8 leads (300 mil)
plastic small outline package; 8 leads; body width 7.5 mm
C-bus) data input
PARAMETER
DESCRIPTION
3
used, and a separate microcontroller is required to control
the devices.
Both the devices can interface to I
microcontrollers for serial input. The PCD3311C can also
interface directly to all standard microcontrollers,
accepting a binary coded parallel input.
With their on-chip voltage reference the PCD3311C and
PCD3312C provide constant output amplitudes which are
independent of the operating supply voltage and ambient
temperature.
An on-chip filtering system assures a very low total
harmonic distortion in accordance with CEPT
recommendations.
In addition to the standard DTMF frequencies the devices
can also provide:
PACKAGE
Twelve standard frequencies used in simplex modem
applications for data rates from 300 to 1200 bits per
second
Two octaves of musical scales in steps of semitones.
2.5
158
125
1.85
PCD3311C; PCD3312C
25
MIN.
192
150
2.10
25
TYP.
2
C-bus compatible
Product specification
6.0
0.9
3
205
160
2.35
+70
MAX.
SOT162-1
SOT176-1
VERSION
SOT27-1
SOT97-1
V
mA
mV
mV
dB
dB
C
A
UNIT