TS636

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BANDWIDTH

The small signal bandwidth is almost constant for gains between +18dB to 0dB and is in the order of

52MHz to 70MHz respectively. For 30dB gain the bandwidth is around 18MHz.

The power bandwidth is typically equal to 30MHz for 2V peak to peak signals.

MAXIMUM INPUT LEVEL

The input level must not exceed the following values :

negative peak value: must be greater than -V

For example, if a

These values are due to common mode input range limitations of the input stage of the first amplifier.

Some other limitations may occur, due to the slew rate of the first operational amplifier (typically in the or-

der of 300V/

µs). This means that the maximum input signal decreases at high frequency.

SINGLE SUPPLY OPERATION

The incoming signal is AC coupled to the inputs.

The TS636 can be used either with a dual or a single supply. If a single supply is used, the inputs are bi-

ased to the mid supply voltage (+V

any noise present on the supply rail.

The AGND pin (9) must be connected to +V

is 8

µA for both amplifiers. A resistor divider structure can be used. Two resistances should be chosen by

considering 8

µA as the 1% of the total current through these resistances. For a single +12V supply volt-

age, two resistances of 7.5k

Ω can be used. The differential input consists of a high pass circuit, formed by

the 1

µF capacitor and a 1kΩ resistance and gives a break frequency of 160Hz.

SINGLE +12V SUPPLY OF THE TS636

+Vcc2

Input 1

Input 2

-Vcc

DGND

GC1

GC2

GC3

GC4

Output 1

1

2

3

4

5

6

7

14

13

12

11

10

9

8

Output 2

AGND

Power Down

+Vcc1

10nF

1µF

7.5k

7.5k

12V

10nF

1µF

47k

47k

12V

1k

1k

IN+

IN-

10nF

100nF

10µF

12V

10nF

100nF

1µF

1µF

TS636