Harman Kardon HK 980/230 Service Manual

TECHNICAL SPECIFICATIONS 2

BLOCK DIAGRAM 8

CONTENTS

harman/kardon Service Manual

HK 980/230

2 x 80W STEREO AMPLIFIER with REMOTE CONTROL

REAR PANEL CONNECTIONS 3
FRONT PANEL CONTROLS 4
REMOTE CONTROL INFORMATION 5
AMP BIAS ADJUSTMENT 6
WIRING DIAGRAM 7

Released EU2008 harman/kardon, Inc. Rev 2, 05/2012
250 Crossways Park Dr.
Woodbury, New York, 11797

SEMICONDUCTOR PINOUTS 9
PCB DRAWINGS 24
SCHEMATIC DIAGRAMS 32
EXPLODED VIEW AND PARTS 38
ELECTRICAL PARTS LIST 40
FRONT AND MAIN BOARD MATCHING 51

Specifications

harman/kardon

HK 980/230 Service Manual

Page 2 of 50

Continuous Average Power Per Channel (FTC)
20 Hz – 20 kHz, both channels driven
Dynamic Power (IHF, 1KHz Tone Burst) 8 Ohms:

High instantaneous current capability (HCC)
Power Bandwidth @ Half-Rated output, 8Ω

Frequency response @ 1W (+0/-3dB)
Damping factor (20Hz-20k Hz)
Signal-to-noise Ratio (Reference rated power

output, A-WTD)
Input sensitivity/Impedance Tuner/CD

Overload:

Tone control range, Bass @ 100 Hz/Treble @
10 kHz

Power supply:
Power consumption:
Dimensions (Width x Height x Depth):
Weight:

8 Ohms:
4 Ohms:

4 Ohms:
2 Ohms:
1 Ohms:

Tuner/CD
Phono (MM):

Phono (MM):
Tuner/CD
Phono (MM):

NOMINAL

80 Watts@<0.09%THD
120 Watts@<0.3%THD
115 Watts
200 Watts
295 Watts
380 Watts
±80 Amps

<10 Hz - 150 kHz

5 Hz - 150 kHz
>125
95 dB

75 dB
270mV/43k Ohms

4.0mV/47k Ohms
6V
90 mV

±10 dB/±10 dB

AC 230V, 50 Hz
410 W
440 x 117 x 358 mm

10.35 kg

Harman/kardon 250 Crossways Park Drive,Woodbury, New York 11797

www.harmankardon.com
Harman Consumer Group International:
2, Route de Tours, 72500 Château-du-Loir, France
© 2005 Harman Kardon, Incorporated
Part 5100-971500-000

Connections

y

y

harman/kardon

HK 980/230 Service Manual

Page 3 of 50

Speaker System 1

Right channel

Record Player

Cassette Tape D eck

Input Output

L

Left

right

R

CD Recorder

stem 1

Speaker S

L

Left

right

R

Input Output

L

Left

right

R

L

Left

right

R

Left channel

R

L

RIGHT SPEAKER

RIGHT SPEAKER

Output

1

1

2

2

Right channel

Speaker System 2

CAUTION:
SPEAKER IMPEDANCE
4 MIN:SYSTEM 1 OR 2
8 MIN:SYSTEM 1 & 2

ATTENTION:
IMPEDANCE DES
HAUT-PARLEURS
4 MIN:SYSTEM 1 OU 2
8 MIN:SYSTEM 1 ET 2

Left

L

right

R

External Power Amp Video Player 1

Connecting Other Components

1. Make sure your amplifier and other
components are turned off.

2. Connect each component's
Output/Play jacks to the corresponding
Input jacks on the back of your amplifier
and, if available, the component’s
Input/Record jacks to the Output jacks
of the HK 980. Use the white, black or
gray plugs to connect Left channel jacks;
use the red plugs for Right channel
jacks.

3. A record player with MM cartridge
must be connected to the Phono Input
jacks and a separate ground wire to the
ground terminal screw above.

Wired Remote Control

To control your amplifier with an
external infrared remote sensor,
connect the wire from the remote sensor
to the REMOTE IN jack on the back
panel. Or, if another stereo component
has a built-in infrared remote sensor
and a Remote Output jack, it may be
possible to connect this jack to the
REMOTE IN jack of your amplifier. All
Harman Kardon products with »Remote
In« and »Remote Out« jacks are
compatible with one another, except for
the Citation 22, 24 and 25.
Other manufacturers' remote sensors
and components may not be compatible,
but it will not hurt to experiment. A
second wire may be used to connect
your amplifier's REMOTE OUT jack to

RLR

LRLRL

MODEL NO.:HK 980

NORTHRIDGE

CALIFORNIA , USA

SERIAL NO.

PRE OUTPHONO

LEFT

RIGHT

PRE OUT PHONO

L

R

L

LR

AUDIO OUT

Video Player 2

LEFT

RIGHT

R

GND

MADE IN P.R.C.

SHOCK H AZARD :DO NOT O PEN
AVIS:RISOUE DE C HOC ELECTRIOUE-NE PAS O UV RIR

CD

CD IN CDR OUT AUX TV TUNER

L

LR

AUDIO OUT

R

REMOTE

OUT IN

IN OUT

OUT CDR INAUXTVTUNEROUT TAPE IN

IN TAPE OUT

RLRLRLR

L

L

R

Left

right

Tuner

Output

the Remote Input of another stereo
component. Continue this process to
include additional components (if
compatible).

Connecting Speakers

1. For best performance, use high
quality speaker cables. However,
ordinary copper wire can be used if
the gauge meets the following
requirements:

Wire Min.
Length Diameter

Up to 2.5 meter 1 mm
Up to 4 meter 1.25 mm
Up to 6 meter 1.6 mm
Above 6 meter 2-2.5 mm

2. Avoid rolling excess wire with or near
signal interconnects.

External Power Amplifiers

For applications where higher power is
desired, connect the Pre-Out Jacks to
the Main In Jacks of an external power
amplifier. The level of the output can be
adjusted between -3 and +3 dB with an
internal button. To adjust the level,
gently insert a small screwdriver into the
button and turn clockwise to increase or
counter-clockwise to decrease the
output level.

LEFT SPEAKER

1

1

2

2

LEFT SPEAKER

AC INPUT

AC 230V~50Hz

410W

FUSE

T4AL/250V

E

R

T

E

K

N

I

Output

Left

L

right

R

Compa ct D isc Pla

er

To w all

outlet

Left channel

Speaker System 2

IMPORTANT: When connecting two
pairs of speakers, determine the
impedance of each pair by looking on
the back of the speakers, in your
owner's manual, or by contacting your
dealer or manufacturer.

You can listen to two pairs of
speakers at the same time ONLY if
the impedance of EACH speaker is
NOT LESS THAN 8 Ohms.

WARNING: Do not play sets of

speakers simultaneously except as
recommended above. Amplifier may
overheat.

AC Power

Plug the cord into a 230 VAC wall
socket. Power indicator will light up to
indicate power ON. To completely
disconnect the power input, the main
plug must be disconnected from the
mains.

2

Controls and Functions

harman/kardon

HK 980/230 Service Manual

Page 4 of 50

9

980

1. Power Indicator: This LED will
illuminate in amber when the unit is in
the Standby mode to signal that the unit
is ready to be turned on.
When the unit is in operation, the
indicator will turn white.

2. System Power Control: Press this
button to turn on the HK 980; press it
again to turn the unit off (to Standby).
Note that the Power Indicator1next to
the switch will turn blue when the unit is
on.

3. Speaker 1 /2 Selectors: Press to
select speaker pair 1 or 2, or both, or
neither (headphone output only).

Speaker 1 Speaker 2

Record Sourc e

Source Direct ModeSource

34567 8

4. Input Source Selector: Select

desired input source for listening by
press-ing the ”Input ource” button
repeatedly (on the left will select
ownwards, right upwards) until the
display for he desired source is
illuminated.

5. Source Direct: Press to bypass tone

control circuitry.

6. Record Source Selector: Select

desired ource for recording to device
connected to the rear panel Tape and
CDR Out sockets by pressing
the ”Record Source” button repeatedly
until the display for the desired source is
illuminated.

7. Mode Button: Press this button to
make changes to the bass, treble and
balance settings.

8. Headphone Jack: Plug in
headphones if desired. With
both ”Speaker 1” and ”2” selectors in the
Off position, output is supplied only to
headphones.

9. Volume Control: Turn to raise or
lower output volume.

Volume

Phones

Remote Control

harman/kardon

HK 980/230 Service Manual

Page 5 of 50

Independent Remote Control

The system remote of the HK 980 can
control the amplifier and compatible
Tuners, CD Players and CD Recorders.
The remote In jack of units without an
integrated IR receiver must be
connected to the amplifier's remote
control output jack so that the system
remote control can operate them.
The Function Table below will show all
functions of the HK 980 and external
devices that can be controlled by the HK
980 remote.

Remote button functions

Button HK 980 CD Player Tuner
ON Power On - ­OFF Power Off - -
Tuner Select Tuner - ­Phono Select Phono - ­TV Select TV - ­Tape Select Tape - ­Aux Select Aux - ­CD Select CD - ­Volume+ Volume Up - ­CDR Select CDR - ­10+ - Current Track +10 ­Mode Select Mode - ­Folder+ - Next Folder ­10- - Current Track -10 ­Volume- Volume Down - ­Folder- - Previous Folder ­Previous

►

Play/Pause

Next
Search - Fast Reverse -

Stop

Search
Open/Close - Open/ Close ­Scroll + - - Tuning Up
Repeat - Repeat Play ­Random - Random Play ­Scroll - - - Tuning Down
0 ~ 9 (Numeric Keys) - Track Select Preset Select
Auto - - Auto Tune
FM Mode - - FM Mode Select
RDS - - RDS Mode Select
Mute Mute Sound - ­Band - - Band Select
Select - - Tune Mode Select

- Skip Previous -

- Play/ Pause -

- Skip Next -

- Stop -

- Fast Forward -

Important Notes:

• To remote control a tuner, CD

Recorder or CD Player, the
appropriate input (”TUNER”, ”CDR”
or ”CD”) must have been selected
with the source buttons of the remote
control (selecting on the front panel is
not sufficient).

• Note that DVD players or tape decks

cannot be controlled by the remote.

• To control a compatible CD

Recorder ”CDR” must be selected as
input and the drive to be controlled
(CDP or CDR) must be selected
appropriately with the ”CDP SELECT”
or ”CDR SELECT” buttons.

Operating Conditions

The control unit operates effectively
within a distance of 7 meters and an
angle of 30° from the amplifier. Using
the control near fluorescent lights may
shorten this range, as will any dust or
dirt that accumulates on the front of the
remote control or the remote sensor
area of the amplifier. Also avoid
blocking the line of sight between
amplifier and remote.

The control unit is powered by two AA
batteries, included with your amplifier.
When you replace weak batteries,
replace both at the same time. When
the remote is to be unused for an
extended period, remove the batteries
to prevent damage from corros

HK 980

harman/kardon

HK 980/230 Service Manual

Page 6 of 50

AMP Adjustment
Idling Adjustment
Precaution for handling measuring
instrument.
The ground side of the measuring
instrument to be connected to the
speaker terminal of this unit must be
kept in floating condition, because
this unit is equipped with floating
balanced power amplifier.
Condition
* Start adjustment 20 minutes or
more after the power is turned on.
* Non-loaded condition.
Idling Adjustment
Adjust VR1 so that the DC voltage of
TP1 becomes +10mV to +11mV.

TP1

VR1

NOTE:
Front and main boards must be matched
correctly as below.
FRONT MAIN SW

1.0 (0077-1011-000X) 1.2 1.4

1.1 (0077-1011-0002) 1.2 1.4

1.2 (0077-1011-0003) 1.3 1.5

Serial number cut MAIN 1.3:
FO0001-11844.

Power Cord in

harman/kardon

HK 980/230 Service Manual

Page 7 of 50

Fuse

IR Board

2P

CN1

3P

CN11

Left Amplifier Board

6

8P

3P

CN3

CN2

3P

CN3

CN1

8P

3P

CN9

Main Board

5P

CN5

6P

CN7

1.00-20P
CN6

2P

CN8

2P

CN9

8P

CN2

4P

CN10

2P

CN1

Right Amplifier Board

8P

CN2

3P

CN3

2P

CN6

2P

CN5

2P

CN7

Power Board

3P

CN8

Transformer

Display Board

1.00-100P
CN1

3P

CN10

2P

CN2

Volume Board

3P

CN11

2P

CN3

Light Board

4P

CN12

Phone Board

HK980x

harman/kardon

HK 980/230 Service Manual

Page 8 of 50

CD-in
TUNER-in

AUX-in

CDR-in

TAPE-in

TV-in

PHONO-in

mcu+5v

Manostat

IR_OUT

IR_IN

phono amp

mcu+5v

Source
Switch

NJU7311AM

Record
Switch

NJU7311AM

Interface

Buffer

I2C /CS

I2C /CS

Pre Amplifier(1 channel only) & MCU Board

VOL

I2C /CS/MUTE

WM8816

Op amp

Buffer

TONE Control(SPI)

Op amp

MCU

-6dB

-30V

Rectifier

TONE

NJW1119A

F1

+15v

Headphone OUT

AMP X

Pre_ OUT

Relay_3

CDR-OUT

TAPE-OUT

-15v

TPA6120A

+6dB

Relay_2

R2_Ctrl

R1_Ctrl

Buffer

F2

Relay_1

Class A

CDR_CUT
TAPE_CUT

CDR/TAPE OUT CUT

NJU201AM

+5v

Rectifier

+12V

Rectifier

Standby

Transformer

Front Panel Board

IR
Rx

Rectifier

F2

+14v

Fuse Board

Driver

VFD

Relay_8

-30V

Power on/off

F1

Main plug

H/P

H/P OUT

74HC4094

KEY

Master VOL

Main

Transformer

Amp L

Amp L

Rectifier

Rectifier

Left Amplifier Board

Amplifier

+48V

-48V

Right Amplifier Board

Amplifier

+48V

-48V

Relay_4

Relay_5

Relay_6

Relay_7

Speaker L1

R2_Ctrl

Speaker L2

R2_Ctrl

Speaker L1

R2_Ctrl

Speaker L2

R2_Ctrl

15

harman/kardon

HK 980/230 Service Manual

Page 9 of 50

16

10

IC1

P4.1

IC3
NJU7 31 1AM

2

3

4

5

6

7

8

9

10

11

12

13

18

I

1

C

SM5964C40J(PLCC44)

35

EA#

Lev el Shifter

NC

NC

VDD

30

P0.736P0.637P0.538P0.439P0.340P0.241P0.142P0.0

Latch Circuit

Control Circuit

43

15

44

VCC

P4.2
P1.0
P1.1
P1.2
P1.3
P1.4
P1.5
P1.6
P1.7

RESET

P3.011P4.312P3.113P3.214P3.315P3.416P3.517P3.618P3.719XTA L120XTA L221GND22P4.0

29

28

27

26

25

24

Level Shifter

Latch Circuit

VSS

VEE

1

1
2
3
4
5
6
7
8
9

10

23

22

21

20

19

DATA

CLK

ST

4

IN+

5

IN-

17

IN+

16

IN-

IC6
TPA6120A2DWP

17
16
14

1

20

-VCC

-VCC

+

-

+

-

+VCC3+VCC

LOUT

ROUT

18

2

19

TC4094

3

CL K

2

D

1

ST R

OE

VDD

8

VSS

9

QS

CS

IC

7

NJW1119AV

32

inB

31

GND

30

SWCB

29

outB

28

GND

27

Tone_Tr1b

26

Tone_Mi 1b

25

Tone_Mi 2b

24

Tone_Ba1b

23

Tone_Ba2b

22

N.C.

21

N.C.

20

V+

19

V-

18

ADR1

17

ADR0

Q5
Q6

Q7
Q1

Q2
Q3
Q4
Q8

inA

GND

SWCA

outA
GND

Tone_Tr1a
Tone_Mi 1a
Tone_Mi 2a
Tone_Ba1a
Tone_Ba2a

N.C.

GND

VDDo ut

DATA
CLOCK
LATCH

14
13

12
4

5
6
7
11

1
2
3
4
5
6

7
8
9
10
11
12

13
14
15
16

33
32
31
30
29
28
27
26
25
24

34

ALE/PROG#
PSEN#
P2.7
P2.6
P2.5
P2.4
P2.3
P2.2
P2.1
P2.0

23

IC5

12

10

11
14
15
16

NJU2 01 AM

IC12A

NC

-V4GND

3

OP275GS

2

IC8

NJW1159M

4

3

1

2

IC17A

3

4

1

89
7

6
3
2

1

+V

5

13

IC13B

6

5

-

+

OP275GS

7

V+

8

4

1

NJM5532M

2

IC17B

5

6

NJM5532M

1

I

G

O

3

8

7

IC22
KA780 5

2

1

IC19
KA781 2

I

2

G

O

3

5

NJM2068M

6

3

NJM2068M

2

IC9A

1

I

G

O

3

3

O

G

I

2

8

IC9B

4

IC20
KA781 5

2

IC21
KA791 5

1

7

1

OUT L

BOUTL

BOUTR

VDD_ OUT

&

Logic

Interface

GND

LATCH

CLOCK14DAT A13CE1

16

15

7

5

OUT R

12

8

6

V-

V+

Bias

VSS_OUT

INL

CE0

INR

9

11

10

8

harman/kardon

HK 980/230 Service Manual

Page 10 of 50

NJW1159

2-CHANNEL ELECTRONIC VOLUME

■■■■ GENERAL DESCRIPTION ■■■■ PACKAGE OUTLINE

NJW1159 is a two channel electronic volume IC. It

is included output buffer amplifier and also resistor
output terminal for using external amplifier to
customize for your application. These functions are
controlled by three-wired serial data. And the chip
selector is available for using four chips on same
serial bus line. It’s available for two-channel stereo

NJW1159V

and or multi-channel audio volume.

■■■■ FEATURES

● Operating Voltage ±4.5 to ±7.5V

● Three-Wired Serial Data Control

● Chip Selector available for using four chips on same serial bus line.

● Volume 0 to -95dB/1dBstep, MUTE

● Bi-CMOS Technology

● Package Outline SSOP16, DMP16, DIP16

NJW1159M

NJW1159D

■■■■ BLOCK DIAGRAM

IN L

IN R

CE0

CE1

3 Wired

Control Data

VOL 1

VOL 2

Inter-face

& Logic

B OUT L

OUT L

B OUT R

OUT R

V+

GND

Bias

V-

9

Dual Bipolar/JFET, Audio

OP275

OUT A

–IN A
+IN A

V–

OUT B
–IN B
+IN B

V+

1
2
3
4

5

6

7

8

1

2

3

4

8

7

6

5

OP275

OUT B
–IN B
+IN B

V+OUT A
–IN A
+IN A

V–

harman/kardon

HK 980/230 Service Manual

Page 11 of 50

a

FEATURES
Excellent Sonic Characteristics

Low Noise: 6 nV/√Hz

Low Distortion: 0.0006%
High Slew Rate: 22 V/␮s
Wide Bandwidth: 9 MHz
Low Supply Current: 5 mA
Low Offset Voltage: 1 mV
Low Offset Current: 2 nA
Unity Gain Stable
SOIC-8 Package

APPLICATIONS
High Performance Audio
Active Filters
Fast Amplifiers
Integrators

GENERAL DESCRIPTION

The OP275 is the first amplifier to feature the Butler Amplifier
front-end. This new front-end design combines both bipolar
and JFET transistors to attain amplifiers with the accuracy and
low noise performance of bipolar transistors, and the speed and
sound quality of JFETs. Total Harmonic Distortion plus Noise
equals that of previous audio amplifiers, but at much lower sup­ply currents.

A very low l/f corner of below 6 Hz maintains a flat noise density
response. Whether noise is measured at either 30 Hz or 1 kHz,

it is only 6 nV/√

the OP275 its high slew rates to keep distortion low, even when

large output swings are required, and the 22 V/µs slew rate of

the OP275 is the fastest of any standard audio amplifier. Best of
all, this low noise and high speed are accomplished using less
than 5 mA of supply current, lower than any standard audio
amplifier.

Hz. The JFET portion of the input stage gives

Operational Amplifier

OP275*

PIN CONNECTIONS

8-Lead Narrow-Body SO 8-Lead Epoxy DIP

(S Suffix) (P Suffix)

Improved dc performance is also provided with bias and offset
currents greatly reduced over purely bipolar designs. Input off­set voltage is guaranteed at 1 mV and is typically less than

200 µV. This allows the OP275 to be used in many dc coupled

or summing applications without the need for special selections
or the added noise of additional offset adjustment circuitry.

The output is capable of driving 600 Ω loads to 10 V rms while

maintaining low distortion. THD + Noise at 3 V rms is a low

0.0006%.

The OP275 is specified over the extended industrial (–40°C to
+85°C) temperature range. OP275s are available in both plastic

DIP and SOIC-8 packages. SOIC-8 packages are available in
2500 piece reels. Many audio amplifiers are not offered in
SOIC-8 surface mount packages for a variety of reasons; how­ever, the OP275 was designed so that it would offer full perfor­mance in surface mount packaging.

*Protected by U.S. Patent No. 5,101,126.

REV. A

Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.

© Analog Devices, Inc., 1995

One Technology Way, P.O. Box 9106, Norwood. MA 02062-9106, U.S.A.
Tel: [phone] Fax: [phone]

10

A

harman/kardon

HK 980/230 Service Manual

Page 12 of 50

NJW1119

3-Band Tone Control IC

GENERAL DESCRIPTION !!!! PACKAGE OUTLINE

!!!!

The NJW1119A is a Tone Control IC including 3-Band
stereo EQ circuit.
It performs superior audio characteristics such as low
distortion and low output noise. All of internal status are
controlled by three-wired serial bus. Selectable 4-Chip
address is available for using four chips on same serial bus
line.
It is suitable for any audio applications.

APPLICATIONS

!!!!

•AV amplifier/receiver

•Car Audio

•Mini/Micro components

NJW1119AV

FEATURES

!!!!

• Operating Voltage ±4.5 to ±7.5V

• 3-Wired Serial Control Chip Address Select Function

• Low Total Harmonic Distortion 0.0002% typ. @Tone=OFF

• Low Output Noise -120dB typ. @Tone=OFF

• Tone Control 0 to ±12dB/1dB Step (100Hz/1kHz/10kHz)

Bi-CMOS Technology

•

•

Package Outline

SSOP32

• Mute Function

■■■■ BLOCK DIAGRAM

26 25 2432 31 30 29 28 27 19 18 1723 22 21 20

GND

3Band TONE

ADR 1 AD R 0GND

Ref 5V

VDD

Ver 0.0

GND

GND

3Band TONE

GND

7 8 9 1 2 3 4 5 6 14 15 1610 11 12 13

Control Logic

harman/kardon

HK 980/230 Service Manual

Page 13 of 50

harman/kardon

HK 980/230 Service Manual

Page 14 of 50

SINGLE-PHASE BRIDGE RECTIFIER

DF005 THRU DF10
DB101 THRU DB107

VOLTAGE RANGE 50 to 1000 Volts

CURRENT 1.0 Ampere

FEATURES

• Glass passivated chip junction

• High forward surge current capability

• Ideal for printed circuit board

• High temperature soldering guaranteed:

260℃/10 seconds at terminals

MECHANICAL DATA

• Case: Transfer molded plastic

• Epoxy: UL94V-0 rate flame retardant

• Terminals solderable per MIL-STD-202E

method 208C

• Polarity: Molded on body

• Mounting position: Any

• Weight: 0.04 ounce, 1.0 gram

MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS

• Ratings at 25℃ ambient temperature unless otherwise specified

• Single Phase, half wave, 60Hz, resistive or inductive load

• For capacitive load derate current by 20%

Maximum Reverse Peak Repetitive Voltage
Maximum RMS Voltage
Maximum DC Blocking Voltage

Maximum Average Forward Rectified Output
Current, 0.06”(1.5mm) lead length at TA=40℃
(Note 2)
Peak Forward Surge Current

8.3ms single half sine wave superimposed on
rated load (JEDEC Method)

Rating for Fusing (t＜8.3ms)
Maximum Instantaneous Forward Voltage drop

Per Bridge element 1.0A
Maximum Reverse Current at rated

DC blocking voltage per element
Typical Junction Capacitance (Note 1)

Typical Thermal Resistance (Note 2)
Operating and Storage Temperature Range

TA=25℃
TA=125℃

SYMBOLS

V

RRM

V

RMS

VDC 50 100 200 400 600 800 1000 Volts

I

(AV)

I

FSM

I2t 10 A
VF 1.1 Volts

IR

CJ 25

R

ΘJA

TJ ,T

DF005

DB101

50 100 200 400 600 800 1000 Volts
35 70 140 280 420 560 700 Volts

1.0 Amps

50 Amps

40

STG

Notes: 1. Measured at 1.0MHz and applied reverse voltage of 4.0 Volts.

2.Unit mounted on P.C.B. with 0.51”×0.51” ( 13×13mm) copper pads.

DF01

DB102

DFM

.020

(0.5)

DF02

DB103

.365 (9.3)
.320 (8.12)

.205 (5.2)

.195 (5.0)

-

~

Dimensions in inches and (millimeters)

DF04

DB104

0.5

-55 to +150

.135 (3.4)

.115 (2.9)

.165 (4.2)
.155 (3.9)

.060

(1.5)

+

.255 (6.5)
.245 (6.2)

~

DF06

DB105

5

DF08

DB106

.350 (8.9)
.300 (7.6)

DF10

DB107

UNIT

2

s

µAmps

mAmps

pF

℃/W

℃

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harman/kardon

HK 980/230 Service Manual

Page 15 of 50

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Filter and

I/V Gain Stage

TPA6120A2

harman/kardon

HK 980/230 Service Manual

Page 16 of 50

www.ti.com

HIGH FIDELITY HEADPHONE AMPLIFIER

FEATURES DESCRIPTION

• 80 mW into 600 Ω From a ±12-V Supply at

0.00014% THD + N

• Current-Feedback Architecture

• Greater than 120 dB of Dynamic Range

• SNR of 120 dB

• Output Voltage Noise of 5 µVrms at

Gain = 2 V/V

• Power Supply Range: ±5Vto±15 V

• 1300 V/µs Slew Rate

• Differential Inputs

• Independent Power Supplies for Low

Crosstalk

• Short Circuit and Thermal Protection

APPLICATIONS

• Professional Audio Equipment

• Mixing Boards

• Headphone Distribution Amplifiers

• Headphone Drivers

• Microphone Preamplifiers

The TPA6120A2 is a high fidelity audio amplifier built
on a current-feedback architecture. This high
bandwidth, extremely low noise device is ideal for
high performance equipment. The better than 120 dB
of dynamic range exceeds the capabilities of the
human ear, ensuring that nothing audible is lost due
to the amplifier. The solid design and performance of
the TPA6120A2 ensures that music, not the amplifier,
is heard.

Three key features make current-feedback amplifiers
outstanding for audio. The first feature is the high
slew rate that prevents odd order distortion
anomalies. The second feature is current-on-demand
at the output that enables the amplifier to respond
quickly and linearly when necessary without risk of
output distortion. When large amounts of output
power are suddenly needed, the amplifier can re­spond extremely quickly without raising the noise
floor of the system and degrading the signal-to-noise
ratio. The third feature is the gain-independent fre­quency response that allows the full bandwidth of the
amplifier to be used over a wide range of gain
settings. The excess loop gain does not deteriorate at
a rate of 20 dB/decade.

SLOS431–MARCH 2004

Stereo Hi−Fi

Headphone Driver

TPA6120A2

1 kΩ

LIN−
LIN+

R

F

1 kΩ

R

F

1 kΩ

RIN+
RIN−

1 kΩ

R

F

R

F

PCM

Audio

Data

Source

Controller

LRCK
BCK

DATA
SCK

ZEROL
ZEROR

MS
MDI
MC

MDO
RST

AUDIO DAC

PCM1792

DSD1792

I

L−

OUT

or

I

R−

I

OUT

L+

I

OUT

R+

OUT

−IN A
+IN A

+IN B

−IN B

+IN C

−IN C

+IN D

−IN D

1/2 OPA4134

2.7 nF

C

F

1 kΩ

R

F

1 kΩ

R

F

C

2.7 nF

F

1/2 OPA4134

2.7 nF

C

F

1 kΩ

R

F

1 kΩ

R

F

C

2.7 nF

F

OUT A

OUT B

OUT C

OUT D

R

1 kΩ

R

1 kΩ

R

1 kΩ

R

1 kΩ

I

I

I

I

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PowerPAD is a trademark of Texas Instruments.

R

10 Ω

R
10 Ω

O

O

LOUT

ROUT

DYR > 120 dB

for Whole

System!