HT338

Stereo Class D Amplifier

Copyright©2023, Heroic Technology

-5-

8/2023 – V1.1

◼ SPECIFICATIONS1

⚫ Absolute Maximum Ratings 2

PARAMETER

Symbol

MIN

MAX

UNIT

Supply voltage range (PVDD, AVCC)

PVDD

-0.3

27

V

Input voltage range (LINP, LINN, RINP, RINN, \SD, TEST,

GAIN, MUTE)

VI

－0.3

5.8

V

Operating temperature range

TA

-40

85

℃

Operating junction temperature range

TJ

-40

150

℃

Storage temperature range

TSTG

-50

150

℃

⚫ Recommended Operating Conditions

PARAMETER

Symbol

CONDITION

MIN

TYP

MAX

UNIT

Supply voltage range

VDD

PVDD, AVCC

4.5

26

V

Operating temperature

Ta

-40

25

85

℃

High-level input voltage

VIH

\SD terminal, spread spectrum

enabled

2.5

5.5

V

Middle-level input voltage

VIM

\SD terminal, spread spectrum

disabled

1.8

2.1

V

Low-level input voltage

VIL

\SD terminal, shutdown

0.5

V

High-level input voltage

VIH

GAIN, TEST, MUTE

1.5

5.5

V

Low-level input voltage

VIL

GAIN, TEST, MUTE

0.8

V

Low-level output voltage

VOL

\SD/Fault terminal, when fault occurs,

OPEN-DRAIN OUTOUT

0.5

V

Load impedance (BTL)

RL

With output filter

4

Ω

Load impedance (BTL)

RL

With output filter

3

Ω

⚫ Electrical Specification3

⚫

Conditions: TA = 25℃, PVDD = 4.5-26V, Load = 4ohm, unless otherwise specified.

PARAMETER

Symbol

CONDITION

MIN

TYP

MAX

UNIT

Class Output Offset Voltage

VOS

VI = 0V, Gain = 32dB

1.5

mV

Quiescent supply current

IDD

VDD = 12V, filter = 10uH+680nF, Load

= 4ohm

19

mA

Quiescent supply current in

SD mode

ISD

VDD = 12V, With Load

10

uA

System Gain

Gain

GAIN=H or floating

32

dB

GAIN=L

26

dB

Turn-on time

ton

Pull \SD high or power on

100

ms

Turn-off time

toff

Pull \SD low

5

us

Gate drive supply

GVDD

5

V

1

Depending on parts and PCB layout, characteristics may be changed.

2

Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings only,

and functional operation of the device at these or any other conditions beyond those indicated under recommended operating conditions

is not implied. Exposure to absolute–maximum–rated conditions for extended periods may affect device reliability.

3

Depending on parts and pattern layout, characteristics may be changed.