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TEA1110A 데이터시트 PDF




Unisonic Technologies에서 제조한 전자 부품 TEA1110A은 전자 산업 및 응용 분야에서
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부품번호 TEA1110A 기능
기능 LOW VOLTAGE VERSATILE TELEPHONE TRANSMISSION TELEPHONE TRANSMISSION INTERFACE
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TEA1110A 데이터시트, 핀배열, 회로
UNISONIC TECHNOLOGIES CO., LTD
TEA1110A
LINEAR INTEGRATED CIRCUIT
LOW VOLTAGE VERSATILE
TELEPHONE TRANSMISSION
CIRCUIT WITH DIALLER
INTERFACE
SOP-14
DESCRIPTION
The UTC TEA1110A is a versatile telephone transmission circuit
providing full speech and line interface functions in electronic
telephone sets. This device works at a line voltage which can be as
low as 1.6V DC (with reduced performance) to enable parallel
connection of telephone sets. It also realizes electronic switching
between speeches and dialling.
The UTC TEA1110A is ideal for applications, such as line
powered telephone sets, cordless telephones, and fax machines,
answering machines.
FEATURES
* Low DC line voltage; operates down to 1.6V (excluding voltage
drop over external polarity guard)
* Voltage regulator with adjustable DC voltage
* Provides a supply for external circuits
* Symmetrical high impedance inputs (64k) for dynamic, magnetic
or piezo-electric microphones
* Asymmetrical high impedance input (32k) for electric
microphones
* DTMF input with confidence tone
* MUTE input for pulse or DTMF dialling
* Receiving amplifier for dynamic, magnetic or piezo-electric
earpieces
* AGC line loss compensation for microphone and earpiece
amplifiers.
ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
TEA1110AL-D14-T
TEA1110AG-D14-T
- TEA1110AG-S14-R
Package
DIP-14
SOP-14
DIP-14
Packing
Tube
Tape Reel
www.unisonic.com.tw
Copyright © 2015 Unisonic Technologies Co., Ltd
1 of 9
QW-R108-014.D




TEA1110A pdf, 반도체, 판매, 대치품
TEA1110A
LINEAR INTEGRATED CIRCUIT
ELECTRIC CHARACTERISTICS(Cont.)
PARAMETER
SYMBOL
CONDITIONS
MIN
Receiving amplifier (pins IR, QR and GAR)
Voltage gain from IR to QR
GVRX
Gain variation with frequency referred to
1kHz
GVRX(F)
Gain variation with temperature referred
to 25°C
GVRX(T)
VIR = 4mV (RMS)
f = 300~3400 Hz
Ta = -25 ~ +75 °C
32
Gain voltage reduction range
Maximum receiving signal
(RMS value)
Noise output voltage at pin R
(RMS value)
GVRXR
external resistor connected between
GAR and QR
VO(rms)
IP =0mA sine wave drive
RL = 50, THD =2%
IP = 0mA sine wave drive
RL =450 , THD =2%
VNORX(rms)
GVRX =33dB,
RL =150
IR
open-circuit,
Automatic gain control (pin AGC)
Gain control range for microphone and
receiving amplifiers with respect to
ILINE=15mA
Highest line current for maximum gain
Lowest line current for minimum gain
DTMF amplifier (pin DTMF)
GVTRX ILINE = 85mA
ISTART
ISTOP
Voltage gain from DTMF to LN
GVDTMF
VDTMF = 20mV (RMS)
MUTE = LOW
24.1
Gain variation with frequency referred to
1kHz
Gain variation with temperature referred
to25°C
Voltage gain from DTMF to QR
(confidence tone)
Mute function (pin MUTE)
GVDTMF(F) f = 300~3400Hz
GVDTMF(T) Ta = -25 ~ +75 °C
GVCT
VDTMF = 20mV (RMS)
RL = 150
LOW level input voltage
HIGH level input voltage
Input current
VIL
VIH
IMUTE
VEE
-0.4
VEE
+1.5
Gain reduction for microphone and
receiving amplifiers
GVTRXM MUTE = LOW
TYP
33
±0.2
±0.3
0.25
0.35
-87
5.9
23
56
25.3
±0.2
±0.4
-15
1.5
80
MAX UNIT
34 dB
dB
dB
14 dB
V
dBVp
dB
mA
mA
26.5 dB
dB
dB
dB
VEE
+0.3
VCC
+0.4
V
V
μA
dB
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
4 of 9
QW-R108-014.D

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TEA1110A 전자부품, 판매, 대치품
TEA1110A
LINEAR INTEGRATED CIRCUIT
FUNCTIONAL DESCRIPTION(Cont.)
Fig.2 Reference voltage adjustment by RVA
6.0
5.0
4.0
(1)
3.0
104
(2)
105 106
RVA (Ω)
(1) Influence of RVA on VREF
(2) VREF without influence of RVA
107
The internal circuitry of the UTC TEA1110A is supplied from pin VCC which can be used to supply peripheral
circuits such as dialling or control circuits. This voltage supply is derived from the line voltage by means of a resistor
(RCC) and it must be decoupled by a capacitor CVCC. The VCC voltage depends on the current consumed by the IC
and the peripheral circuits as shown by the formula :( RCCint is the internal equivalent resistance of the voltage
supply, and Irec is the current consumed by the output stage of the earpiece amplifier))
VCC= VCC0 - RCCint × (IP-IREC)
V CC0= VLN-RCC × ICC (see also Figs 3 and 4).
The DC line current flowing into the set is determined by the exchange supply voltage (Vexch), the feeding
bridge resistance (Rexch), the DC resistance of the telephone line (Rline) and the reference voltage (VREF). The
internal reference voltage (generating VREF) would be automatically adjusted to a lower value when the line currents
drop below 7.5mA. Therefore, more sets can work in parallel with DC line voltages (excluding the polarity guard)
down to 1.6V (absolute minimum voltage). At currents below 7.5mA, the circuit has limited sending and receiving
levels. This is called the low voltage area.
2.5
2
1.5
1
(2)
0.5
(1) With RVA resistor.
(2) Without RVA resistorl
0
0 12
Vcc (V)
(1)
34
Fig.3 Typical current IP available from VCC for peripheral
circuits at ILINE=15mA.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
Rccint
Vcc
+
Vcco
Irec
PERIPHERAL
CIRCUIT
Ip
VEE
Fig.4 VCC supply voltage for peripherals
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QW-R108-014.D

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