DOWNLOAD Sharp 32JF-77 (serv.man15) Service Manual ↓ Size: 6.53 MB | Pages: 96 in PDF or view online for FREE

18W  OUTPUT POWER:
R

L

 = 8

Ω/4Ω; THD = 10%

HIGH EFFICIENCY
WIDE SUPPLY VOLTAGE RANGE (UP TO

±25V)
SPLIT SUPPLY
OVERVOLTAGE PROTECTION
ST-BY AND MUTE FEATURES
SHORT CIRCUIT PROTECTION
THERMAL OVERLOAD PROTECTION

DESCRIPTION
The TDA7481 is an audio class-D amplifier as-
sembled in Multiwatt15 package specially de-
signed for high efficiency applications mainly for
TV and Home Stereo sets.

ORDERING NUMBER: TDA7481

1

2

3

4

5

6

7

9

10

11

8

+V

CC SIGN

ST-BY/MUTE

IN

-V

CC SIGN

SGN-GND

FREQ

FEEDCAP

N.C.

BOOT

BOOTDIODE

OUT

TAB CONNECTED TO PIN 8

13

14

15

12

-V

CC POW

-V

CC POW

+V

CC POW

VREG

D96AU535A

1
2
3
4
5
6
7
8
9

10
11
12
13
14
15

OUT

BOOTDIODE

BOOT

NC

FEEDCAP

FREQ

SGN-GND

–V

CC 

SIGN

IN

ST-BY/MUTE

+V

CC 

SIGN

VREG

+V

CC

 POW

-V

CC

 POW

-V

CC

 POW

PWM OUTPUT 
BOOTSTRAP DIODE ANODE
BOOTSTRAP
NOT CONNECTED
FEEDBACK INTEGRATING CAPACITOR
SETTING FREQUENCY RESISTOR 
SIGNAL GROUND
SIGNAL  NEGATIVE SUPPLY
INPUT
CONTROL STATE PIN
POSITIVE SIGNAL SUPPLY
INTERNAL VOLTAGE REGULATOR
POSITIVE POWER SUPPLY
NEGATIVE POWER SUPPLY (to be connected to pin 13 via CS)
NEGATIVE POWER SUPPLY (to be connected to pin 13 via CS)

V

ip

1

non-inverting voltage input

V

DDL

2

supply voltage LOW

V

in

3

inverting voltage input

GND

4

ground, substrate

I

om

5

black current measurement
output

V

DDH

6

supply voltage HIGH

V

cn

7

cathode transient voltage output

V

oc

8

cathode DC voltage output

V

fb

9

feedback voltage output

Fig.2  Pin configuration.

ndbook, halfpage

MGA057

1

2

3

4

5

6

7

8

9

DDL

V

GND

TDA6111Q

ip

V

in

V

om

I

oc

V

cn

V

fb

V

DDH

V

Fig.1  Block diagram.

handbook, full pagewidth

DIFFERENTIAL

STAGE

MIRROR

MIRROR

CURRENT

SOURCE

MIRROR

MIRROR

TDA6111Q

7 V

supply voltage

input HIGH

feedback

output

6

Vbias

FOLLOWERS

C par

9

non-inverting

input

inverting

input

3

1

4

2

ground

(substrate)

supply voltage

input LOW

7

8

5

cathode
transient
output

cathode
DC output

black current
measurement
output

MGA058

 

SDA 6000 / SDA 6001

P-MQFP-128-2

P-MQFP-128-2

• Level 1.5, 2.5, 3.5 WST Display Compatible
• Fast  External  Bus  Interface  for  SDRAM  (Up  to

8 MByte)  and  ROM  or  Flash-ROM  (Up  to  2  x
4 MByte)

• Embedded General Purpose 16 Bit CPU (Also used

as TV-System Controller, C16x Compatible)

• Display Generation Based on Pixel Memory
• Program  Code  also  Executable  From  External

SDRAM

• Embedded Refresh Controller for External SDRAM
• Enhanced Programmable Low Power Modes
• Single 6 MHz Crystal Oscillator
• Multinorm H/V-Display Synchronization in Master or Slave Mode 
• Free Programmable Pixel Clock from 10 MHz to 50 MHz
• Pixel Clock Independent from CPU Clock
• 3

× 6 Bits RGB-DACs On-Chip

• Supply Voltage 2.5 and 3.3 V
• P-MQFP-128 Package

• 16-bit C166-CPU Kernel (C16x Compatible)
• 60 ns Instruction Cycle Time
• 2 KBytes Dual Ported IRAM
• 2 KBytes XRAM On-chip
• General Purpose Timer Units (GPT1 and GPT2). 
• Asynchronous/Synchronous  Serial  Interface  (ASC0)  with  IrDA  Support.  Full-duplex

Asynchronous Up To 2 MBaud or Half-duplex Synchronous up to 4.1 MBaud.

• High-speed Synchronous Serial Interface (SSC). Full- and Half-duplex synchronous

up to 16.5 Mbaud

• 3 Independent, HW-supported Multi Master/Slave I

2

C Channels at 400 Kbit/s

• 16-Bit Watchdog Timer (WDT)
• Real Time Clock (RTC)
• On Chip Debug Support (OCDS)
• 4-Channel 8-bit A/D Converter
• 42 Multiple Purpose Ports
• 8 External Interrupts
• 33 Interrupt Nodes

• OSD size from 0 to 2046 (0 to 1023) pixels in horizontal (vertical) direction
• Frame Buffer Based Display
• 2 HW Display Layers
• Support of Double Page Level 2.5 TTX in 100 Hz Systems
• Support of Transparency for both Layers Pixel by Pixel
• User Programmable Pixel Frequency from 10.0 MHz to 50 MHz
• Up to 65536 Displayable Colors in one Frame
• DMA Functionality
• Graphic Accelerator Functions (Draw Lines, Draw and Fill Rectangle, etc.)
• 1, 2, 4 or 8-bit Bitmaps (up to 256 out of 4096 colors)
• 12 bit/16 bit RGB Mode for Display of up to 65535 Colors
• HW-support for Proportional Characters
• HW-support for Italic Characters
• User Definable Character Fonts
• Fast Blanking and Contrast Reduction Output
• Double resolution graphic for interlaced sync rasters (SDA6001 only)

• Two Independent Data Slicers (One Multistandard Slicer + one WSS-only Slicer)
• Parallel Multi-norm Slicing (TTX, VPS, WSS, CC, G+)
• Four Different Framing Codes Available
• Data Caption only Limited by available Memory
• Programmable VBI-buffer
• Full Channel Data Slicing Supported
• Fully Digital Signal Processing
• Noise Measurement and Controlled Noise Compensation
• Attenuation Measurement and Compensation
• Group Delay Measurement and Compensation
• Exact Decoding of Echo Disturbed Signals