TA2022 Ver la hoja de datos (PDF) - Tripath Technology Inc.

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Fabricante

TA2022

STEREO 90W (4Ω) CLASS-T™ DIGITAL AUDIO AMPLIFIER DRIVER USING DIGITAL POWER PROCESSING (DPP™) TECHNOLOGY

Tripath Technology Inc. 

Tripath Technology, Inc. - Technical Information

TA2022 PINOUT

32-pin SSIP Package

(Front View)

VBOOT2

1

VN10

2

VN10GND

3

VPP2

4

VN10SW

5

NC

6

OUT2

7

VNN2

8

VNN1

9

OUT1

10

NC

11

VPP1

12

VBOOT1

13

VN10FDBK

14

AGND

15

V5

16

REF

17

VNNSENSE

18

VPPSENSE

19

AGND

20

V5

21

OAOUT1

22

INV1

23

MUTE

24

OAOUT2

25

INV2

26

BIASCAP

27

FBKGND2

28

FBKOUT2

29

FBKGND1

30

FBKOUT1

31

HMUTE

32

PIN DESCRIPTION

Pin

1, 13

2

Function

VBOOT2, VBOOT1

VN10

3

4, 12

5

6

VN10GND

VPP2, VPP1

VN10SW

NC

7,10

OUT2, OUT1

8, 9

VNN2, VNN1

11

NC

14

15, 20

16, 21

17

18

VN10FDBK

AGND

V5

REF

VNNSENSE

19

VPPSENSE

22, 25

23, 26

24

OAOUT1, OAOUT2

INV1, INV2

MUTE

27

BIASCAP

28, 29

30,31

32

FBKGND2, FBKOUT2

FBKGND1, FBKOUT1

HMUTE

Description

Bootstrap voltages for gate drive of high side MOSFET’s

“Floating” supply input. Normally connected to the output of onboard VN10 buck

converter. This voltage must be stable and referenced to VNN.

Power ground for onboard VN10 generator. Electrically tied to the TA2022 case.

Positive power supply input pins.

Switching output voltage for onboard VN10 generator (buck converter).

Not connected internally. May be connected to pin 7 without any loss of

functionality or performance.

Power amplifier outputs.

Negative power supply inputs.

Not connected internally. May be connected to pin 10 without any loss of

functionality or performance.

Feedback for onboard VN10 generator (nominally 11V above VNN)

Analog Ground.

5V power supply input.

Used to set internal bias currents. The pin voltage is typically 1.1V.

Negative supply voltage sense input. This pin is used for both over and under

voltage sensing for the VNN supply.

Positive supply voltage sense input. This pin is used for both over and under

voltage sensing for the VPP supply.

Outputs of Input Stage op amps.

Inverting inputs of Input Stage op amps.

Logic input. A logic high puts the amplifier in mute mode. Ground pin if not used.

Please refer to the section, Mute Control, in the Application Information.

Bandgap reference times two (typically 2.5VDC). Used to set the common mode

voltage for the input op amps. This pin is not capable of driving external circuitry.

Output voltage differential feedback for channel 2.

Output voltage differential feedback for channel 1.

Logic Output. A logic high indicates both amplifiers are muted, due to the mute

pin state, or a “fault” such as an overcurrent, undervoltage, or overvoltage

condition.

6

TA2022 – KLI/1.2/07-04

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