TS634IPT Ver la hoja de datos (PDF) - STMicroelectronics

Número de pieza

componentes Descripción

Fabricante

TS634IPT

DUAL WIDE BAND OPERATIONAL AMPLIFIER FOR ADSL LINE INTERFACE

STMicroelectronics 

TS634

CAPABILITIES

The table below shows the calculated compo-

nents for different values of k. In this case

R2=1000Ω and the gain=16dB. The last column

displays the maximum amplitude level on the line

regarding the TS634 maximum output capabilities

(18Vpp diff.) and a 1:2 line transformer ratio.

Active matching

k

R1 R3 Rs

(Ω) (Ω) (Ω)

1.3 820 1500 3.9

1.4 490 1600 5.1

1.5 360 2200 6.2

1.6 270 2400 7.5

1.7 240 3300 9.1

Passive matching

TS634 Output

Level to get

12.4Vpp on

the line

(Vpp diff)

8

8.7

9.3

9.9

10.5

12.4

Maximum

Line level

(Vpp diff)

27.5

25.7

25.3

23.7

22.3

18

MEASUREMENT OF THE POWER

CONSUMPTION

Conditions:

Power Supply: 12V

Passive impedance matching

Transformer turns ratio: 2

Maximun level required on the line: 12.4Vpp

Maximum output level of the driver: 12.4Vpp

Crest factor: 5.3 (Vp/Vrms)

The TS634 power consumption during emission

on 900 and 4550 meter twisted pair telephone

lines: 450mW

8/9

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