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PDF UTC1062 Data sheet ( Hoja de datos )
| Número de pieza | UTC1062 | |
| Descripción | Low Voltage Telephone Transmission Circuit | |
| Fabricantes | Hangzhou Silan Microelectronics | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de UTC1062 (archivo pdf) en la parte inferior de esta página. Total 13 Páginas | ||
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UTC1062
LINEAR INTEGRATED CIRCUIT
LOW VOLTAGE TELEPHONE
TRANSMISSION CIRCUIT
WITH DIALLER INTERFACE
DESCRIPTION
The UTC1062 is a bipolar integrated circuit per-
forming all speech and line interface function required
in the fully electronic telephone sets. It performs
electronic switching between dialing speech. The
circuit is able to operate down to d.c. line voltage of
1.6v (with reduced performance) to facilitate the use
of more telephone sets in parallel.
FEATURES
* Low d.c. line voltage; operates down to 1.6V
(excluding polarity guard)
* Voltage regulator with adjustment static resistance
* Provides supply with limited current for external
circuitry
* Symmetrical high-impedance inputs (64kΩ for
dynamic, magnetic or piezoelectric microphones
* Asymmetrical high-impedance inputs (32kΩ for
electric microphones
* DTMF signal input with confidence tone
* Mute input for pulse or DTMF dialing
DIP-16
* Receiving amplifier for several types of earphones
* Large amplification setting range on microphone
and ear piece amplifiers
* Line loss compensation facility , line current
dependent (microphone and ear piece amplifiers)
* Gain control adaptable to exchange supply
* Possibility to adjust the d.c. line voltage
QUICK REFERENCE DATA
Line voltage at Iline=15mA
VLN
Line current operating range[pin1]
normal operation
with reduced performance
Iline
Iline
Internal supply current
ICC
Supply current for peripherals
at Iline=15 mA mute input HIGH
Vcc>2.2V
Vcc>2.8V
Voltage amplification range
w microphone amplifier
w receiving amplifier
Line loss compensation
w Amplification control range
Exchange supply voltage range
. Exchange feeding bridge resistance range
DataShYeOUeWtA4NUG .EcLoECmTRONICS CO.LTDOperating ambient temperature range
Ip
Ip
AVD
AVD
AVD
Vexch
Rexch
Tamb
typ. 3.8 V
11 to 140 mA
1 to 11 mA
typ. 1mA
typ. 1.8mA
typ. 0.7mA
44 to 52 dB
20 to 39 dB
Typ.
6 dB
36 to 60V
400 to 1000Ω
-25 to +75°C
1
1 page  
UTC1062
LINEAR INTEGRATED CIRCUIT
ELECTRONICAL CHARACTERISTICS (continued)
parameter
conditions
Receiving amplifier output OR (pin4)
Output impedance
Voltage gain from IR to OR
Iline=15mA;
RL(from pin 9 to
pin 4 )=300Ω
Gain variation with frequency
at f=300Hz and f=3400Hz
w.r.t.800Hz
Gain variation with temperature
At25°C and +75°C
w.r.t.25°C
without R6
Iline=50mA
Output voltage
sine wave drive;
Ip=0mA;THD=2%
R4=100kΩ
Iline=15mA
RL=150Ω
RL=450Ω
Output voltage
THD=10%
R4=100kΩ
RL=150Ω
Iline=4mA
Noise output voltage
Iline=15mA
R4=100kΩ
IR open-circuit
psophometrically
weighted
RL=300Ω
Gain adjustment GAR(pin 5)
Gain variation of receiving
amplifier achievable by varying
R4 between GAR and OR
MUTE input (pin 12)
Input voltage(HIGH)
Input voltage(LOW)
Input current
Reduction of gain
MIC+ or MIC to OR
MUTE=HIGH
Voltage gain from DTMF to OR
MUTE=HIGH
R4=100kΩ
RL=300Ω
Automatic gain control input AGC
pin(15)
Controlling the gain from lR to OR
and the gain from MIC+/MIC-
to LN;R6 between AGC and VEE
R6=110kΩ
Gain control range
Iline=70mA
symbol min. typ. max. unit
Zo
4Ω
Gv
∆Gvf
29.5 31 32.5
±0.2
dB
dB
∆GvT
±0.2 dB
VO(rms)
VO(rms)
0.22
0.3
0.33
0.48
VO(rms)
15
V
V
mV
VNO(rms)
50
µV
∆Gv
VIH
VIL
IMUTE
∆Gv
11 0 dB
1.5
VCC
V
0.3 V
8 15 µA
70 dB
Gv 19 dB
∆Gv 5.8 dB
YOUW ANG ELECTRONICS CO.LTD
5
5 Page 
UTC1062
OR 4
LINEAR INTEGRATED CIRCUIT
OR 4 (1)
OR 4 (2)
VEE 9
VEE 9
VEE 9
(a) (b)
(c)
(a) Dynamic ear piece.
(b) Magnetic ear piece. The resistor marked(1) may be connected to prevent distortion(inductive load)
(c) Piezoelectric ear piece. The ear piece marked(2) is required to increase the phase margin
(capacitive load)
Fig.11 Alternative receiver arrangement
Gv
(dB)
0
R6=∞
-2
R9=20Ω
-4 (1) (2) (3)
-6
(1) R6= 78.7kΩ
(2) R6= 110kΩ
(3) R6= 140kΩ
0 20 40 60 80 100 120 140
Iline (mA)
Fig.12 Variation of gain with line current, with R6 as a parameter.
Rexch(Ω)
400 600 800 1000
R6(kΩ)
36 100 78.7 D
D
Vexch(V)
48
140 110 93.1
82
60 D D 120 102
Table 1 Values of resistor R6 for optimum line loss compensation, for various usual values of exchange
supply voltage(Vexch) and exchange feeding bridge resistance(Rexch);R9=20Ω
YOUW ANG ELECTRONICS CO.LTD
11
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet UTC1062.PDF ] | |
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