TECHNICAL DATA
Tone Ringer
The
KK2410
is a bipolar integrated circuit designed for telephone bell replacement.
•
Designed for Telephone Bell Replacement
•
Low Curent Drain
•
Adjustable 2-frequency Tone
•
Adjustable Warbling Rate
•
Extension Tone Ringer Modules
•
Alarms or Other Alerting Devices
•
External Triggering or Ringer Disable
•
Built-in hysteresis prevents false triggering and rotary dial ‘Chirps’
KK2410
D SUFFIX
SOIC
ORDERING INFORMATION
KK2410N
Plastic
KK2410D
SOIC
T
A
= -45° to 65° C
for package
LOGIC DIAGRAM
PIN ASSIGNMENT
PIN 1 = V
CC
PIN 5 = GND
1.
2.
3.
4.
Output amplifier
High frequency oscillator
Low frequency oscillator
Hysteresis regulator
(Regulator circuit has built-in hysteresis to prevent false
triggering and rotary dial “Chirps”)
1
KK2410
PIN DESCRIPTION
NAME
V
CC
RE
LFI
LF0
GND
HF0
HFI
OUT
PIN
1
2
3
4
5
6
7
8
Positive power supply.
Initiation of oscillation start input
Low frequency oscillator input
Low frequency oscillator output
Negative power supply
High frequency oscillator output
High frequency oscillator input
Tone output
DESCRIPTION
MAXIMUM RATINGS
*
Symbol
V
CC
P
D
Tstg
*
Parameter
DC Supply Voltage (Referenced to GND)
Power Dissipation in Still Air, Plastic DIP
Storage Temperature
Value
to +30.0
400
-65 to +150
Unit
V
mW
°C
Maximum Ratings are those values beyond which damage to the device may occur.
Functional operation should be restricted to the Recommended Operating Conditions.
RECOMMENDED OPERATING CONDITIONS
Symbol
V
CC
T
A
Operating Temperature
Parameter
DC Supply Voltage (Referenced to GND)
Min
13.0
-45
Max
29.0
+65
Unit
V
°C
This device contains protection circuitry to guard against damage due to high static voltages or electric fields.
However, precautions must be taken to avoid applications of any voltage higher than maximum rated voltages to this
high-impedance circuit. For proper operation, V
IN
and V
OUT
should be constrained to the range GND≤(V
IN
or
V
OUT
)≤V
CC
.
Unused inputs must always be tied to an appropriate logic voltage level (e.g., either GND or V
CC
). Unused
outputs must be left open.
2
KK2410
ELECTRICAL CHARACTERISTICS
(Voltages Referenced to GND, T
A
= -45 to +65°C)
Guaranteed Limits
Symbol
V
SI
I
SI
V
SUS
I
SUS
V
TR
I
TR
V
DIS
I
DIS
V
OH
V
OL
I
IN
Parameter
Initiation Supply Voltage
(1)
Initiation Supply Current
(1)
Sustaining Voltage (2)
Sustaining Current (2)
Trigger Voltage (3)
Trigger Current (3,5)
Disable Voltage (4)
Disable Current (4)
High-Level Output
Voltage
Low-Level Output
Voltage
Maximun Input Leakage
Current
(Pin 3)
(Pin 7)
f
H1
f
H2
f
L
High Frequency 1
High Frequency 2
Low Frequency
See Fig. 1
No Load V
CC
=V
SUS
See Fig. 1
V
CC
=15V
V
CC
=15V
V
CC
=21V
V
CC
=15V
V
CC
=21V, I
OH
=-15mA,
Pin 6=6V, Pin 7=GND
V
CC
=21V, I
OL
=15mA,
Pin 6=GND, Pin 7=6V
Pin 3=6V,
Pin 4=GND, V
CC
=21V
Pin 7=6V,
Pin 6=GND, V
CC
=21V
R
3
=191KΩ,C
3
=6800pF
R
3
=191KΩ,C
3
=6800pF
R
2
=165KΩ, C
2
=0.47µF
Test Conditions
See Fig. 1
Min
16.8
1.4
9.5
0.7
8.8
5.0
-
-20
16.7
-
-
-
461
576
9.0
Typ
Max
21.2
4.2
12.2
2.5
12.2
1000
0.7
-
21.0
1.8
1.0
1.0
563
704
11.0
Unit
V
mA
V
mA
V
µA
V
µA
V
V
µA
µA
Hz
Hz
Hz
Notes:
1. Initiation supply voltage (V
SI
) is the supply voltage required to start the tone ringer oscillating.
2. Sustaining voltage (V
SUS
) is the supply voltage required to maintain oscillation.
3. V
TR
and I
TR
are the conditions applied to trigger in to start oscillation for V
SUS
≤V
CC
≤V
SI
.
4. V
DIS
and I
DIS
are the conditions applied to trigger in to inhibit oscillation for V
SI
≤V
CC
.
5. Trigger current must be limited to this value externally.
3
KK2410
CIRCUIT CURRENT-SUPPLY VOLTAGE (NO LOAD)
Figure 1
APPLICATION CIRCUIT
Figure 2
4
KK2410
APPLICATION NOTE
The application circuit illustrates the use of the
KK2410
devices in typical telephone or extension tone ringer application.
The AC ringer signal voltage appears across the TIP and RING inputs of the circuit and is attenuated by capacitor C
1
and resistor R
1
.
C
1
also provides isolation from DC voltages (48V) on the exchange line.
After full wave rectification by the bridge diode, the waveform is filtered by capacitor C
4
to provide a DC supply for
the tone ringer chip.
As this voltage exceeds the initiation voltage (V
SI
), oscillation starts.
With the components shown, the ouptut frequency chops between 512(f
h1
) and 640Hz(f
h2
) at a 10Hz(f
L
) rate.
The loudspeaker load is coupled through a 1300Ω to 8Ω ransformer.
The output coupling capacitor C
5
is required with transformer coupled loads.
When driving a piezo-ceramic transducer type load, the coupling C
5
and transformer (1300Ω:8Ω) are not required.
However, a current limiting resistor is required.
The low frequency oscillator oscillates at a rate (f
L
) controlled by an external resistor (R
2
) and capacitor (C
2
).
The frequency can be determined using the relation f
L
=1/1.289R
2
xC
2
. The high frequency oscillates at a f
H1
, f
H2
controlled by an external resistor (R
3
) and capacitor (C
3
). The frequency can be determined using the relation
f
H1
=1/1.504R
3
xC
3
, f
H2
=1/1.203R
3
xC
3
.
TRIGGERING
KK2410
FROM CMOS OR TTL LOGIC
Figure 3
Figure 4
5
京公网安备 11010802033920号
EEWORLD
