TS34119

Low Power Audio Amplifier

4/13

Version: A07

Pin Function Description

Symbol

Pin

Description

CD

1

Chip Disable-Digital input. A logic ”0” (<0.8V) sets normal operation. A logic ”I”（≥2.0V）sets

the power down mode. Input impedance is nominally 90KΩ

FC2

2

A capacitor at this pin increases power supply rejection, and affects turn-on time. This pin

can be left open it the capacitor at FC1 is sufficient.

FC1

3

Analog ground for the amplifiers. A 1uF capacitor at this pin (with a 5uF capacitor at pin 2)

provides 52dB(typically) 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.

Vin

4

Amplifier input. The input capacitor and resistor set low frequency roll off and input

impedance. The feedback resistor is connected to this pin and VO1.

VO1

5

6

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

GND

7

Ground pin for the entire circuit.

VO2

8

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

Typical Application Circuit