TEA1062N/TEA1062AN

LINEAR INTEGRATED CIRCUIT

UNISONICTECHNOLOGIESCO.,LTD

12 of 13

www.unisonic.com.tw

QW-R108-011.C

should be HIGH(UTC TEA1062N is LOW) or open-circuit, for measuring the DTMF input MUTE should be

LOW(UTC TEA1062N is HIGH) .Inputs not under test should be open-circuit.

10

6

11

7

12

13

1

4

5

2

3

16

8

15

14

9

MIC-

MIC+

REG AGC STAB

SLPE

GAS2

GAS1

GAR

QR

LN

VCC

VEE

IR

DTMF

MUTE

R1=620

Ω

100

μF

C4

100pF

C7 1nF

C6

100pF

R4

100k

Ω

R7

68k

Ω

R9

20

Ω

R5

3.6k

Ω

R6

C3

4.7

μF

10

μF

C1

100

μF

Vi

600

Ω

C8 1nF

10 TO 140 mA

Vo

C2

Fig.14 Test circuit for defining voltage gain of the receiving amplifier.

SLPE

GAS1

GAS2

REG

AGC

DTMF

LN

IR

QR

GAR

MIC-

MIC+

MUTE

Telephone

Line

From dial and

control circuits

C1

100

μF

13

11

12

10

9

8

7

6

5

4

3

2

1

16

14

15

R1

620

Ω

R2

132k

Ω

BZX79

C12

R10

130

Ω

BAS11

(x2)

BZW14

(x2)

C5

100nF

C2

R4

R3

3.92k

Ω

C4

100pF

C7

1nF

R8

390

Ω

Zbal

R9

20

Ω

C6

100pF

R7

C8

1nF

C3

4.7

μF

R6

R5

3.6k

Ω

UTC TEAI062N

UTC TEA1062AN

Fig.15 Typical application of the UTC TEA1062AN, shown here with a piezoelectric earpiece and DTMF dialling. The

bridge to the left, the Zener diode and R10 limit the current into the circuit and the voltage across the circuit during

line transients. Pulse dialling or register recall required a different protection arrangement.

Fig.16

Typical applications of the UTC TEA1062N/TEA1062AN (simplified)

The dashed lines show an optional flash (register recall by timed loop break).