150

100

50

0

10

100

1000

10000

FREQUENCY (Hz)

=10V

=25 C

= 100

Ω

Sta ndby OFF

Figure 8 : Input Voltage Noise versus Frequency

SUP PLY VOLTAGE, V

(V)

CC

04

8

12

16

60

50

40

30

20

T= 25 C

R

= 600

Ω

C = 100 pF

Sta ndby OFF

amb

L

L

Figure 7b : Phase Margin versus Supply Voltage

STANDBY APPLICATION

The TS904 offers two separate STANDBY pins :

.

STANDBY 1 (pin 8) acting on the n

°2 and n°3 operators.

.

STANDBY 2 (pin 9) acting on the n

°1 and n°4 operators.

When one of these standby is activated (STANDBY ON) :

.

The supply current of the corresponding operators is considerably reduced. The total consumption of

the circuit is then divided by 2 (one STANDBY ON) or decreased down to 0.5

STANDBY ON) (ref. figure 1b).

.

All the outputs of the corresponding operators are in high impedance state. No output current can

then be sourced or sinked.

The standby pins 8 and 9 should never stay unconnected.

.

.

(see electrical characteristics)

TS904

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