Datasheet > TEA1110A(14DIP)

TEA1110A(14DIP)

更新时间： 2024-01-09 19:36:47

品牌	Logo	应用领域
友顺 - UTC		光电二极管
页数	文件大小	规格书
9页	248K
描述
Telephone Circuit, Bipolar, PDIP14

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技术参数
数据手册

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TEA1110A(14DIP) 技术参数

生命周期：	Active	Reach Compliance Code：	compliant
风险等级：	5.7	JESD-30 代码：	R-PDIP-T14
端子数量：	14	最高工作温度：	70 °C
最低工作温度：	-25 °C	封装主体材料：	PLASTIC/EPOXY
封装代码：	DIP	封装等效代码：	DIP14,.3
封装形状：	RECTANGULAR	封装形式：	IN-LINE
电源：	2.9 V	认证状态：	Not Qualified
子类别：	Telephone Circuits	最大压摆率：	1.4 mA
标称供电电压：	2.9 V	表面贴装：	NO
技术：	BIPOLAR	温度等级：	OTHER
端子形式：	THROUGH-HOLE	端子节距：	2.54 mm
端子位置：	DUAL	Base Number Matches：	1

TEA1110A(14DIP) 数据手册

UTC TEA1110A LINEAR INTEGRATED CIRCUIT

APPLICATION INFORMATION CIRCUIT (Typical application of the UTC TEA1110A in sets with Pulse

Dialling or Flash facilities)

Rprotect

10Ω

Rast1

130kΩ

C_IR

Rcc

4×

a/b

619Ω

BAS11

VDR

95V

CGAR

Vcc

DTMF

MUTE

Rast2

telephone

line

100pF

UTC

TEA1110A

GAR

3.92kΩ

Rpd4 Rpd5

signal from

470kΩ

BC558

MIC+

dial and

470kΩ

control circuits

CGARS

Rast3

1nF

supply for

peripheral

circuits

MIC-

C_VCC

SLPE REG AGC V^EE

BZX79C10

100μF

b/a

R^pd6

390Ω

BF473

BC547

input

R^SLPE

20Ω

C_REG

Zbal

68kΩ

4.7μF

R^pd1

470kΩ

BZX79C10

BSN254

BC547

R^pd2

Rpd3

1MΩ

R_limit

470kΩ

3.9Ω

FUNCTIONAL DESCRIPTION

Supply (pins LN, SLPE, VCC and REG)

The supply for the UTC TEA1110A and its peripherals is obtained from the telephone line (see Fig.1). The IC

generates a stabilized reference voltage (Vref) between pins LN and SLPE. Vref is temperature compensated and

can be adjusted by means of an external resistor (R^VA). Vref equals 3.35 V and can be increased by connecting RVA

between pins REG and SLPE (see Fig.2), or decreased by connecting RVA between pins REG and LN. The voltage

at pin REG is used by the internal regulator to generate Vref and is decoupled by CREG, which is connected to VEE.

This capacitor, converted into an equivalent inductance (see Section “Set impedance”), realizes the set impedance

conversion from its DC value (R^SLPE) to its AC value (RCC in the audio-frequency range). The voltage at pin SLPE is

proportional to the line current.

The voltage at pin LN is:

V^LN=Vref +RSLPE×ISLPE

ISLPE=IIine-Icc-Ip-I*

Where:

Iline = line current

Icc = current consumption of the IC

IP = supply current for peripheral circuits

I* = current consumed between LN and VEE.

The preferred value for R^SLPEis 20 Ω. Changing RSLPE will affect more than the DC characteristics; it also

influences the microphone and DTMF gains, the gain control characteristics, the sidetone level and the maximum

output swing on the line.

UTC UNISONIC TECHNOLOGIES CO., LTD.

QW-R108-014,A

1 2 3 456 7 8 9

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