TK2070 Ver la hoja de datos (PDF) - Tripath Technology Inc.

Número de pieza

componentes Descripción

Fabricante

TK2070

STEREO 70W (4Ω) CLASS-T™ DIGITAL AUDIO AMPLIFIER DRIVER USING DIGITAL POWER PROCESSING (DPP™) TECHNOLOGY

Tripath Technology Inc. 

Tripath Technology, Inc. - Technical Information

TC2001 AUDIO SIGNAL PROCESSOR PIN DESCRIPTIONS

Pin

1

2, 6

3

4, 7

5

8

9, 12

10, 11

13

14, 16

15

17

18

19

20

21

22, 27

23, 28

24

25, 26

Function

BIASCAP

FBKGND2,

FBKGND1

DCMP

FBKOUT2,

FBKOUT1

VPWR

HMUTE

Y1, Y2

Y1B, Y2B

NC

OCD2, OCD1

REF

VNNSENSE

OVRLDB

VPPSENSE

AGND

V5

OAOUT1, OAOUT2

INV1, INV2

MUTE

BBM1, BBM0

Description

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.

Ground Kelvin feedback (Channels 1 & 2)

Internal mode selection. This pin must be grounded for proper device

operation.

Switching feedback (Channels 1 & 2)

Test pin. Must be left floating.

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

mute pin state, or a “fault”.

Non-inverted switching modulator outputs.

Inverted switching modulator outputs.

No connect

Over Current Detect pins. Not used on the TK2070, these pins should

be tied to ground.

Internal bandgap reference voltage; approximately 1.2 VDC.

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

under voltage sensing for the VNN supply. Not used on the TK2070, this

pin should be tied to ground through a 10kΩ resistor.

A logic low output indicates the input signal has overloaded the amplifier.

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

under voltage sensing for the VPP supply.

Analog Ground.

5 Volt power supply input.

Input stage output pins.

Single-ended inputs. Inputs are a “virtual” ground of an inverting op-amp

with approximately 2.4VDC bias.

When set to logic high, both amplifiers are muted and in idle mode.

When low (grounded), both amplifiers are fully operational. If left floating,

the device stays in the mute mode. Ground if not used.

Break-before-make timing control to prevent shoot-through in the output

MOSFETs. When using with the TPS1035, these pins should both be

set to 5V.

TC2001 AUDIO SIGNAL PROCESSOR PINOUT

28-pin SOIC

(Top View)

BIASCAP

1

FBKGND2

2

DCMP

3

FBKOUT2

4

VPW R

5

FBKGND1

6

FBKOUT1

7

HMUTE

8

Y1

9

Y1B

10

Y2B

11

Y2

12

NC

13

OCD2

14

28

INV2

27

OAOUT2

26

BBM0

25

BBM1

24

MUTE

23

INV1

22

OAOUT1

21

V5

20

AGND

19

VPPSENSE

18

OVRLDB

17

VNNSENSE

16

OCD1

15

REF

5

TK2070 – MC/2.1/10-03

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