34119 查看數據表（PDF） - Freescale Semiconductor

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34119

LOW POWER AUDIO AMPLIFIER

Freescale Semiconductor 

PIN CONNECTIONS

PIN CONNECTIONS

CD 1

FC2 2

FC1 3

VIN 4

8 V02

7 GND

6 VCC

5 V01

Table 1. 34119 Pin Definitions

Figure 3. 34119 Pin Connections

Pin Number Pin Name

1

CD

2

FC2

3

FC1

4

VIN

5

V01

6

VCC

7

GND

8

V02

Definition

Chip Disable -- Digital input. A Logic “0” (<0.8 V) sets normal operation. A logic “1” (≥2.0 V) sets the power down

mode. Input impedance is nominally 90 kΩ.

A capacitor at this pin increases power supply rejection, and affects turn--on time. This pin can be left open if

the capacitor at FC1 is sufficient.

Analog ground for the amplifiers. A 1.0 µF capacitor at this pin (with a 5.0 µF capacitor at Pin 2) provides

(typically) 52 dB of power supply rejection. Turn--on time of the circuit is affected by the capacitor on this pin.

This pin can be used as an alternate input.

Amplifier input. The input capacitor and resistor set low frequency rolloff and input impedance. The feedback

resistor is connected to this pin and VO1.

Amplifier Output #1. The dc level is ≈ (VCC - 0.7 V)/2.

DC supply voltage (+2.0 V to +16 V) is applied to this pin.

Ground pin for the entire circuit.

Amplifier Output #2. This signal is equal in amplitude, but 180° out--of--phase with that at VO1. The dc level is

≈ (VCC -- 0.7 V)/2.

Analog Integrated Circuit Device Data

Freescale Semiconductor

34119

3

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