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參數(shù)資料
| 型號(hào)： | UTC9106 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | LINEAR INTEGRATED CIRCUIT |
| 中文描述： | 線性集成電路 |
| 文件頁數(shù)： | 2/3頁 |
| 文件大小： | 79K |
| 代理商： | UTC9106 |
UTC9106
LINEAR INTEGRATED CIRCUIT
YOUWANG ELECTRONICS CO.LTD
2
ELECTRICAL CHARACTERISTICS
( Ta=25
°
C )
(All voltage referenced to GND unless otherwise specified)
Characteristic
Operating Supply Voltage
Initiation Supply Voltage1
Initiation Supply Current1
Sustaining Voltage2
Sustaining Current2
Output Voltage High
Symbol
Vcc
Vsi
Isi
Vsus
Isus
V
OH
Test Condition
Min
Typ.
Max
29.0
21
4.2
12.0
2.5
21.0
Unit
V
V
mA
V
mA
V
See Fig.2
6.8K-Pin 2 to GND
See Fig.2
No Load Vcc=Vsus,See Fig.2
Vcc=21V, I8=-15mA
Pin6=6V, Pin7=GND
Vcc=21V, I8=15mA
Pin6=GND, Pin7=6V
Pin3=6V, Pin4=GND
Pin7=6V, Pin6=GND
R3=191k
, C3=6800pF
R3=191k
, C3=6800pF
R2=165k
, C2=0.47
μ
F
17
1.4
9.7
0.7
17.0
19
2.5
11.0
1.4
19.0
Output Voltage Low
V
OL
1.6
V
I
IN
(Pin3)
I
IN
(pin7)
High Frequency 1
High Frequency 2
Low Frequency
500
500
563
704
11.0
nA
nA
Hz
Hz
Hz
F
H1
F
H2
F
L
461
576
9.0
512
640
10
*NOTE (See electrical characteristics sheet)
1. Initiation supply voltage (Vsi) is the supply voltage required to start the tone ringer oscillating.
2. Sustaining voltage (Vsus) is the supply voltage required to maintain oscillation.
APPLICATION NOTE
The application circuit illustrates the use of the UTC9106 device in typical telephone tone ringer application.
The AC ringer signal voltage appears across the TIP and RING inputs of the circuit and is attenuated by
capacitor C1 and resistor R1.
C1 also provides isolation from DC voltage (48V) on the exchanged line.
After full wave rectification by the bridge diode, the waveform is filtered by capacitor C4 to provide a DC
supply for the tone ringer chip.
As this voltage exceeds the initiation voltage (Vsi), oscillation starts.
With the components shown , the output frequency chops between 512Hz (F
H1
) and 640 Hz(F
H2
) at a 10
Hz(F
L
) rate.
The loudspeaker load is coupled through a 1300
to 8
transformer.
The output coupling capacitor C5 is required with transformer coupled loads.
When driving a pizeo-ceramic transducer type load, the coupling C5 and transformer (1300
:8
) 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 (R2) and capacitor (C2).
The frequency can be determined using the relation F
L
=1/1.289 R2* C2. The high frequency oscillates at a
F
H1
,F
H2
controlled by an external resistor (R3) and capacitor (C3). The frequency can be determined using the
relation F
H1
=1/1.504 R3*C3 and F
H2
= 1/1.203 R3*C3.
Pin 2 of the UTC9106 allows connection of external resistor RSL, which is used to program the slope of the
supply current vs supply voltage characteristics (see Fig.3), and hence the supply current up to the initiation
voltage (Vsi). This initiation voltage remains constant independent of RSL.
The supply current drawn prior to triggering varies inversely with
resistance. Thus, increasing the value of RSL, will decrease the amount of AC ringing current required to trigger
the device. As such, longer subscriber loops are possible since less voltage is dropped per unit length of loop wire
due to the lower current level. RSL can also be used to compensated for smaller AC coupling capacitors (C5 on
Fig.4) (higher impedance) to the line which can be used to alter the ringer equivalence number of a tone ringer
circuit.
RSL, decreasing for increasing value of
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