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AD52580 반도체 회로 부품 판매점

20W Stereo Class-D Audio Amplifier



Elite Semiconductor 로고
Elite Semiconductor
AD52580 데이터시트, 핀배열, 회로
ESMT
AD52580
20W Stereo Class-D Audio Amplifier with Power Limit
And Dynamic Temperature Control
Features
z Single supply voltage
8 ~ 26V for loudspeaker driver
Built-in LDO output 3.3V for others
z Loudspeaker power from 24V supply
BTL Mode: 20W/CH into 8Ω @0.09% THD+N
PBTL Mode: 40W/CH into 4Ω @0.15% THD+N
z Loudspeaker power from 13V supply
BTL Mode: 10W/CH into 8Ω @10% THD+N
z 87% efficient Class-D operation eliminates need
for heat sink
z Differential inputs
z Four selectable, fixed gain settings
z Internal oscillator
z Short-Circuit protection with auto recovery option
z Under-Voltage detection
z Over-Voltage protection
z Pop noise and click noise reduction
z Adjustable power limit function for speaker
protection
z Output DC detection for speaker protection
z Filter-Free operation
z Over temperature protection with auto recovery
z Dynamic temperature control prevents chip from
over heating
Applications
z TV audio
z Boom-Box
z Powered speaker
z Consumer Audio Equipment
Description
The AD52580 is a high efficiency stereo class-D
audio amplifier with adjustable power limit function
and dynamic temperature control. The loudspeaker
driver operates from 8~26V supply voltage and
analog circuit operates at 3.3V supply voltage. It can
deliver 20W/CH output power into 8Ω loudspeaker
within 0.09% THD+N and without external heat sink
when playing music.
AD52580 provides parallel BTL (Mono)
application, and it can deliver 40W into 4Ω
loudspeaker within 0.15% THD+N. The adjustable
power limit function allows user to set a voltage rail
lower than half of 3.3V to limit the amount of current
through the speaker.
Output DC detection prevents speaker damage
from long-time current stress. The dynamic
temperature control is a gain control system. As chip
junction temperature higher than a warning level,
the gain level will decrease until junction
temperature lower than the warning level.
The output short circuit and over temperature
protection include auto-recovery feature.
Simplified Application Circuit
Elite Semiconductor Memory Technology Inc.
Publication Date: Sep. 2013
Revision: 1.2
1/23


AD52580 데이터시트, 핀배열, 회로
ESMT
Pin Assignments
AD52580
Pin Description
NAME
SD
E-TSSOP
-28L
1
FAULT
2
LINP
LINN
GAIN0
GAIN1
NC
AGND
AVDD
PLIMIT
RINN
RINP
NC
PBTL
3
4
5
6
7
8
9
10
11
12
13
14
E-TSSOP
-24L
1
2
3
4
5
6
7
8
9
10
11
12
NA
NA
TYP DESCRIPTION
Shutdown signal for IC (Low = disabled, output Hi-Z; High = operational).
I
Voltage compliance to 26V.
Open drain output used to display short circuit or dc detect fault. Voltage
compliant to 26V. Short circuit faults can be set to auto-recovery by connecting
O
FAULTB pin to SD pin. Otherwise, both short circuit faults and dc detect faults
must be reset by cycling PVCC.
I Positive audio input for left channel. Biased at 1.65V.
I Negative audio input for left channel. Biased at 1.65V.
I Gain select least significant bit. Voltage compliance to 26V.
I Gain select most significant bit. Voltage compliance to 26V.
Not connected.
P Analog signal ground. Connect to the thermal pad.
O 3.3V regulated output.
Power limit level adjustment. Connect a resistor divider from AVDD to GND to
I set power limit. Give V(PLIMIT) < 1.55V to set power limit level. Connect to
GND for no power limit.
I Negative audio input for right channel. Biased at 1.65V.
I Positive audio input for right channel. Biased at 1.65V.
Not connected.
Parallel BTL mode switch, high for parallel BTL output. Voltage compliance to
I
26V.
Elite Semiconductor Memory Technology Inc.
Publication Date: Sep. 2013
Revision: 1.2
2/23




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AD52580 amplifier

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