TPA005D12

2-W STEREO CLASS-D AUDIO POWER AMPLIFIER

SLOS241B – AUGUST 1999 – REVISED MARCH 2000

3

POST OFFICE BOX 655303

Terminal Functions

TERMINAL

DESCRIPTION

NAME

NO.

DESCRIPTION

AGND

3, 7, 20,

46, 47

Analog ground for headphone and Class-D analog sections

COSC

48

Capacitor I/O for ramp generator. Adjust the capacitor size to change the switching frequency.

CP1

25

First diode node for charge pump

CP2

24

First inverter switching node for charge pump

CP3

23

Second diode node for charge pump

CP4

26

Second inverter switching node for charge pump

FAULT0

42

Logic level fault0 output signal. Lower order bit of the two fault signals with open drain output.

FAULT1

41

Logic level fault1 output signal. Higher order bit of the two fault signals with open drain output.

LCOMP

6

Compensation capacitor terminal for left-channel Class-D amplifier

LINN

4

Class-D left-channel negative input

LINP

5

Class-D left-channel positive input

LOUTN

14, 15

Class-D amplifier left-channel negative output of H-bridge

LOUTP

10, 11

Class-D amplifier left-channel positive output of H-bridge

LPVDD

9, 16

Class-D amplifier left-channel power supply

MUTE

2

Active-low logic-level mute input signal. When MUTE is held low, the selected amplifier is muted. When MUTE

is held high, the device operates normally. When the Class-D amplifier is muted, the low-side output transistors

are turned on, shorting the load to ground.

NC

17, 18, 19,

30, 31, 32

No connection

PGND

12, 13

Power ground for left-channel H-bridge only

PGND

27

Power ground for charge pump only

PGND

36, 37

Power ground for right-channel H-bridge only

PVDD

21, 28

VDD supply for charge-pump and gate-drive circuitry

RCOMP

43

Compensation capacitor terminal for right-channel Class-D amplifier

RINN

45

Class-D right-channel negative input

RINP

44

Class-D right-channel positive input

RPVDD

33, 40

Class-D amplifier right-channel power supply

ROUTN

34, 35

Class-D amplifier right-channel negative output of H-bridge

ROUTP

38, 39

Class-D amplifier right-channel positive output of H-bridge

SHUTDOWN

1

Active-low logic-level shutdown input signal. When SHUTDOWN is held low, the device goes into shutdown mode.

When SHUTDOWN is held at logic high, the device operates normally.

V2P5

29

2.5-V internal reference bypass

VCP

22

Storage capacitor terminal for charge pump

VDD

8

VDD bias supply for analog circuitry. This terminal needs to be well filtered to prevent degrading the device

performance.