Philips Semiconductors
Programmable multi-tone telephone ringer
Product specification
PCD3360
1 FEATURES
• Output signals for electro-dynamic transducer
(loudspeaker) or for piezo-electric transducer (PXE)
• 7 basic output frequencies (tones) and a pause
• 4 selectable tone sequences
• 4 selectable repetition rates
• 3 selectable impedance settings
• 3-step automatic swell
• Delta-modulated output signal that approximates a
sinewave
• Input ringing frequency discriminator with selectable
upper and lower frequency limits
• Output for optical signal
• Customized tone sequences, impedance settings and
automatic swell levels are mask programmable.
2 GENERAL DESCRIPTION
The PCD3360 is a CMOS integrated circuit, designed to
replace the electro-mechanical bell in telephone sets.
It meets most postal requirements, with selectivity of
output tone sequences and input ringer frequencies.
Output signals for a loudspeaker or for a piezo-electric
(PXE) transducer are provided. No audio transformer is
required since the loudspeaker is driven in class D.
3 QUICK REFERENCE DATA
SYMBOL
fTONE
nint
fLL
fUL
Zset
td(on)
PARAMETER
CONDITIONS
available frequencies
(tones)
number of intervals per tone
sequence
lower limits of frequency
discriminator
upper limits of frequency
discriminator
impedance settings
with 50 Ω loudspeaker
switch-on delay
ringer frequency = 25 Hz
VALUE
553, 600, 667, 800, 1000, 1067,
1 333
15 or 16
13.33 or 20
30 or 60
≈7, ≈10.5 or ≈17.5
60 (maximum)
UNIT
Hz
Hz
Hz
kΩ
ms
4 ORDERING INFORMATION
TYPE
NUMBER
PCD3360P
PCD3360T
NAME
DIP16
SO16
PACKAGE
DESCRIPTION
plastic dual in-line package; 16 leads (300 mil)
plastic small outline package; 16 leads; body width 7.5 mm
VERSION
SOT38-4
SOT162-1
1997 Jan 15
3