TEA1064A datasheet(8/36 Pages) PHILIPS

No de pièce	TEA1064A

Description	Low voltage versatile telephone transmission circuit with dialler interface and transmit level dynamic limiting

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Fabricant	PHILIPS [NXP Semiconductors]

Site Internet	http://www.nxp.com

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8 / 36 page

March 1994

8

Philips Semiconductors

Product speciﬁcation

Low voltage versatile telephone transmission circuit

with dialler interface and transmit level dynamic limiting

TEA1064A

Fig.5

Maximum AC output swing on the line as a

function of line current with peripheral

supply current as a parameter: R15 = 0

Ω;

R16 = 392

Ω.

handbook, halfpage

10

6

4

2

0

20

30

MGR060

Iline (mA)

VLN(p-p)

(V)

Ip =

0 mA

2 mA

4 mA

Fig.6

Equivalent impedance between LN and

VEE in the application with stabilized

VLN-SLPE:

R15 = 0

Ω

Leq =C3 × R9 × Rp

Rp =15kΩ

handbook, halfpage

MGR061

R9

20

Ω

REG

LN

C3

4.7

µF

Rp

Vref

Leq

VCC1

VEE

C1

R1

Fig.7

Internal reference voltage VCC2-SLPE as a function of resistor RVA(REG-SLPE) for line currents between 11

and 140 mA.

In the stabilized supply application:

VLN =VCC2-SLPE + ([Ip + 0.25 × 10−3 A] × R15) + ([Iline − 1.55 × 10−3 A] × R9)

In the unregulated supply application (R15 = 0

Ω):

VLN =VCC2-SLPE + ([Iline − 1.55 × 10−3 A] × R9)

handbook, full pagewidth

7.8

3.0

080

40

120

MGR062

4.2

5.4

6.6

RVA (REG-SLPE) (kΩ)

Vref

(V)

with RVA

infinite

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