TS904AI datasheet(8/12 Pages) STMICROELECTRONICS

Il numero della parte	TS904AI

Spiegazioni elettronici	RAIL TO RAIL CMOS QUAD OPERATIONAL AMPLIFIER (WITH STANDBY POSITION)

PDF	12 Pages

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Produttore elettronici	STMICROELECTRONICS [STMicroelectronics]

Homepage	http://www.st.com

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150

100

1000

10000

FREQUENCY (Hz)

=10V

=25 C

Tamb

VCC

= 100

Ω

R S

Sta ndby OFF

Figure 8 : Input Voltage Noise versus Frequency

SUP PLY VOLTAGE, V

(V)

T= 25 C

= 600

Ω

C = 100 pF

Sta ndby OFF

amb

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

µA(VCC = 3V, two

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.

The ”standby OFF” state, is reached when the pins 8 or 9 voltage is higher than Vin SBY/OFF.

The ”standby ON” state, is assured by the pins 8 or 9 voltage lower than Vin SBY/OFF.

(see electrical characteristics)

TS904

8/12

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