AD82551A

更新时间： 2022-04-23 23:00:11

品牌	Logo	应用领域
晶豪 - ESMT		驱动器音频放大器
页数	文件大小	规格书
3页	182K
描述
Stereo Digital Audio Amplifier with Headphone Driver

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AD82551A 数据手册

ESMT

AD82551A

Absolute Maximum Ratings

Symbol

Parameter

Supply for Digital Circuit

Supply for Analog Circuit

Min

Max

3.6

5.5

3.6

150

Units

DVDD

AVDD

VDDL(R)

V_i

Supply for Left (Right) Channel

Input Voltage

-0.3

-65

T_stg

Storage Temperature

^oC

T_a

Ambient Operating Temperature

Voltage Difference between V_DDLand V_DDR

Voltage Difference between V_DDL(V_DDR) and

V_DDL(V_DDR) Power-on Voltage Ramp

-1

-3

0.2

V/μs

Recommended Operating Conditions

Symbol

DVDD

AVDD

VDDL(R)

T_a

Parameter

Typ

Units

Supply for Digital Circuit

Supply for Analog Circuit

Supply for Driver Stage

Ambient Operating Temperature

3.0~3.3

3.0~5.0

0~70

^oC

Digital Characteristics

Symbol

Parameter

Min

Typ

6.4

Max

0.8

Units

V_IH

High-Level Input Voltage

Low-Level Input Voltage

High-Level Output Voltage

Low-Level Output Voltage

Input Capacitance

2.0

V_IL

V_OH

V_OL

C_I

2.4

0.4

General Electrical Characteristics

Symbol

Parameter

Condition

Min Typ Max Units

I_PD

Supply Current during Power Down

μA

^oC

Junction Temperature for Driver Shutdown

Temperature Hysteresis for Recovery from Shutdown

Under Voltage Disabled (For AVDD)

150

UV_H

UV_L

Fsw

T_PWM

R_SC

2.8

2.7

Under Voltage Enabled (For AVDD)

Switching Rate of Loudspeakers and Headphones

Minimum PWM pulse width

8Fs 8Fs 8Fs

Sec

256Fs

Loudspeaker Short-Circuit Detection (Note2)

Headphone Output Short-Circuit Detection

VDDR(L)=5V

Steady State

2.8 3.2

3.0 3.4

R_SCH

Note2: Loudspeaker short-circuit protection is effective only when LC or ferrite bead filters are properly used.

Long time short circuit will reduce device reliability. AD82551A protects itself from short-circuit

damage only when the lines connected to loudspeakers are shorted to each other or to GND.

AD82551A will be burnt if the lines connected to loudspeakers are shorted to VDDL(VDDR).

Package Options

Package Type

Part Number

Thermal Information

24L SSOP 209mil AD82551A-CG θ_JA= 64.7 ^oC/W (Condition: still air, multilayer board)

Elite Semiconductor Memory Technology Inc.

Publication Date：Apr. 2007

Revision：1.1 3/15

1 23

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