ISSI IS31AP2118

IS31AP2118
15W STEREO CLASS-D AUDIO POWER AMPLIFIER
Advanced Information
June 2012
GENERAL DESCRIPTION
FEATURES
The IS31AP2118 is a 15W, dual channel, Class-D
stereo driver in our audio amplifier family. It is suitable
for powering the audio components of various
equipments, including typical consumer electronics,
high performance audio speakers.
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IS31AP2118 has several key features which
distinguishes itself from other alternatives on the
market. On-board AGC, EMI suppression, and 90%
typical operating efficiency are key features of this
part. EMI suppression circuit, which eliminates LC,
filters at the outputs. These features simplify customer
design, reduces system cost and PCB area.
The IS31AP2118 integrates automatic gain control
function with adjustable power limit. When output
power goes over the power limit, IS31AP2118 can
reduce gain automatically to pull down the output
power, so that keep the output power around power
limit while the input level is high. The IS31AP2118 has
short circuit and thermal protection features integrated
on board.
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Dual 12W, at 4Ω @ 1% THD, VCC=12V
Dual 15W, at 8Ω @ 10% THD, VCC=16V
Mono 20W, at 8Ω @ 10% THD, VCC =18V
90% typical operating efficiency
8V< VIN <26V
Filter-less EMI suppression
Integrated AGC with adjustable power limit
Four selectable, gain preset levels: 20db, 26db,
32db, 36db
High SNR, low THD+N
Thermal and short-circuit protection
Over/under-voltage protection
De-pop circuitry
TSSOP-28 package
APPLICATIONS
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Consumer Audio Equipment
HDTV, Home Theater Equipment
Automotive Audio Amplifier
Performance Stereo Speakers
TYPICAL APPLICATION CIRCUIT
VCC
8V~26V
7
14
10 F
PVCC
AVCC
MODE
27,28
470 F
0.1 F
1 F
13
5
Micro
Controller
6
1
1k
2
AVDD
MUTE
GAIN0
AGCLMT
GAIN1
SDB
BSR+
FAULTB
100k
OUTR+
IS31AP2118
PGND
OUTR-
CINR+
1 F 12
Right Input
11
BSRINR+
INR-
CINR1 F
BSL+
OUTL+
PGND
CINL+
1 F 3
Left Input
VCC
8V~26V
15,16
4
OUTLINL+
INL-
CINL1 F
BSLAGND
9
10
17
18
19
20
21
0.22 F
1nF
33 H
33 H
0.22 F
1nF
0.22 F
1nF
26
25
24
23
22
33 H
33 H
0.22 F
1nF
8
Figure 1 Typical Application Circuit (Stereo Mode Application)
Integrated Silicon Solution, Inc. – www.issi.com
Rev. 00A, 06/10/2012
1
IS31AP2118
VCC
8V~26V
7
14
PVCC
AVCC
MODE
VCC
8V~26V
15,16
27,28
470 F
1 F
10 F
0.1 F
13
5
Micro
Controller
6
1
1k
2
AVDD
MUTE
GAIN0
AGCLMT
GAIN1
SDB
FAULTB
BSR+
IS31AP2118
100k
OUTR+
OUTR-
CINR+
1 F 12
Audio Input
11
BSRINR+
INR-
CINR1 F
PGND
BSL+
OUTL+
OUTL-
CINL+
1 F 3
4
BSLINL+
INL-
AGND
9
10
17
18
0.22 F
33 H
20
21
0.22 F
1nF
19, 24
26
1nF
25
0.22 F
23
33 H
22
0.22 F
8
CINL1 F
Figure 1 Typical Application Circuit (Mono Mode Application)
Integrated Silicon Solution, Inc. – www.issi.com
Rev. 00A, 06/10/2012
2
IS31AP2118
PIN CONFIGURATION
Package
TSSOP-28
Pin Configuration (Top View)
SDB
1
28
PVCC
FAULTB
2
27
PVCC
INL+
3
26
BSL+
INL-
4
25
OUTL+
GAIN0
5
24
PGND
GAIN1
6
23
OUTL-
AVCC
7
22
BSL-
AGND
8
21
BSR-
AVDD
9
20
OUTR-
AGCLMT
10
19
PGND
INR-
11
18
OUTR+
INR+
12
17
BSR+
MUTE
13
16
PVCC
MODE
14
15
PVCC
ORDERING INFORMATION
INDUSTRIAL RANGE: -40°C TO +85°C
Order Part No.
Package
QTY/Tube
IS31AP2118-ZLS2
TSSOP-28, Lead-free
30
Copyright © 2012 Integrated Silicon Solution, Inc. All rights reserved. ISSI reserves the right to make changes to this specification and its products at any time without notice. ISSI assumes no liability arising out of the application or use of any information, products or services described herein. Customers are advised to obtain the latest version of this device specification before relying on any published information and before placing orders for products. Integrated Silicon Solution, Inc. does not recommend the use of any of its products in life support applications where the failure or malfunction of the product can reasonably be expected to cause failure of the life support system or to significantly affect its safety or effectiveness. Products are not authorized for use in such applications unless Integrated Silicon Solution, Inc. receives written assurance to its satisfaction, that: a.) the risk of injury or damage has been minimized; b.) the user assume all such risks; and c.) potential liability of Integrated Silicon Solution, Inc is adequately protected under the circumstances
Integrated Silicon Solution, Inc. – www.issi.com
Rev. 00A, 06/10/2012
3
IS31AP2118
PIN DESCRIPTION
No.
Pin
Description
1
SDB
Shutdown control. Active low.
2
FAULTB
Open drain output used to display short circuit or dc detect
fault status. Voltage compliant to AVCC. Short circuit faults
can be set to auto-recovery by connecting FAULT pin to SD
pin. Otherwise, both short circuit faults and dc detect faults
must be reset by cycling PVCC.
3
INL+
Positive audio input for left channel.
4
INL-
Negative audio input for left channel.
5
GAIN0
Gain select least significant bit.
6
GAIN1
Gain select most significant bit.
7
AVCC
Analog power supply.
8
AGND
Analog signal ground.
9
AVDD
5V regulated output. Connect 2.2μF to AGND.
10
AGCLMT
Power limit level adjusting pin. Connect a resistor divider
from AVDD to AGND to set power limit. Connect directly to
AVDD for no power limit.
11
INR-
Negative audio input for right channel.
12
INR+
Positive audio input for right channel.
13
MUTE
Mute mode control.
14
MODE
Parallel BTL mode switch. (low = BTL mode, high = PBTL
mode)
15, 16
PVCC
Power supply for right channel H-bridge.
17
BSPR
Bootstrap I/O for right channel, positive high-side FET.
18
OUTR+
Class-D H-bridge positive output for right channel.
19, 24
PGND
Power ground for the H-bridges.
20
OUTR-
Class-D H-bridge negative output for right channel.
21
BSR-
Bootstrap I/O for right channel, negative high-side FET.
22
BSL-
Bootstrap I/O for left channel, negative high-side FET.
23
OUTL-
Class-D H-bridge negative output for left channel.
25
OUTL+
Class-D H-bridge positive output for left channel.
26
BSL+
Bootstrap I/O for left channel, positive high-side FET.
27, 28
PVCC
Power supply for left channel H-bridge.
Thermal Pad
Connect to GND.
Integrated Silicon Solution, Inc. – www.issi.com
Rev. 00A, 06/10/2012
4
IS31AP2118
ABSOLUTE MAXIMUM RATINGS
Supply voltage (AVCC, PVCC), VCC
Voltage at SDB, GAIN0, GAIN1, MODE, MUTE pins
Voltage at INR-, INR+, INL-, INL+, AGCLMT pins
Voltage at OUTL+, OUTR+, OUTL-, OUTRVoltage at AVDD
Maximum junction temperature, TJMAX
Storage temperature range, TSTG
Operating temperature range, TA
-0.3V ~ +30.0V
-0.3V ~ VCC+0.3V
-0.3 to VAVDD+0.3V
-0.3 to VCC+0.3V
-0.3V ~ +6.0V
150°C
-65°C ~ +150°C
−40°C ~ +85°C
Note:
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 condition beyond those indicated in the operational sections of the specifications is
not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
DC ELECTRICAL CHARACTERISTICS
VCC=12V, TA=25℃, RL=8Ω (unless otherwise noted).
Symbol
Parameter
Condition
Min.
Typ.
Unit
26
V
VCC
Supply voltage
IDD
Quiescent current
VSDB = 2V, No load (without LC)
20
mA
ISD
Shutdown current
VSDB = 0.8V
200
µA
IO = 500mA
240
mΩ
1.5
mV
RDS(ON)
VOS
G
Drain-source
resistance
8
Max.
on-state
Class-D output offset voltage
VI = 0, Gain = 36dB
(measured differentially)
Gain
Gain1= 0.8V, Gain0= 0.8V
20
Gain1= 0.8V, Gain0= 2V
26
Gain1= 2V, Gain0= 0.8V
32
Gain1= 2V, Gain0= 2V
36
dB
tON
Turn-on time
VSDB = 2V
14
ms
tOFF
Turn-off time
VSDB = 0.8V
2
µs
Internal regulated output
IO = 5mA
5
V
AVDD
RL
Speaker resistance
BTL: PVCC > 15 V
4.8
BTL: PVCC ≤ 15 V
3.2
PBTL
3.2
Ω
Logic Electrical Characteristics (SDB, GAIN0, GAIN1, MUTE, MODE)
VIH
High level threshold voltage
2
AVCC
V
VIL
Low level threshold voltage
0
0.8
V
IIH
High level threshold current
VI = 2V, VCC = 18V
50
µA
IIL
Low level threshold current
VI = 0.8V, VCC = 18V
5
µA
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Rev. 00A, 06/10/2012
5
IS31AP2118
AC ELECTRICAL CHARACTERISTICS
VCC=12V, TA=25℃, RL=8Ω (unless otherwise noted).
Symbol
PSRR
PO
THD+N
Parameter
Power
supply
rejection
Condition
ripple 200mVP-P ripple at 1kHz, Gain = 20dB,
Inputs ac-coupled to AGND
Min.
Typ.
Max.
Unit
-70
dB
Continuous output power THD+N = 10%, f = 1kHz, VCC = 13V
10
W
Total harmonic distortion VCC = 12V, f = 1kHz, PO = 5W (half+ noise
power)
0.1
%
65
µV
VN
Output integrated noise
20Hz to 22kHz, A-weighted filter, Gain
= 20dB
X
Crosstalk
VO = 1Vrms, Gain = 20dB, f = 1kHz
-100
dB
Signal-to-noise ratio
Maximum output at THD+N < 1%, f =
1kHz, Gain = 20dB, A-weighted
102
dB
Thermal trip point
160
Ԩ
Thermal hysteresis
60
Ԩ
SNR
Integrated Silicon Solution, Inc. – www.issi.com
Rev. 00A, 06/10/2012
6
IS31AP2118
FUNCTIONAL BLOCK DIAGRAM
Integrated Silicon Solution, Inc. – www.issi.com
Rev. 00A, 06/10/2012
7
IS31AP2118
FUNCTION DESCRIPTION
The IS31AP2118 is a 15W, dual channel, Class-D
stereo driver which is suitable for powering the audio
components of various equipments, including typical
consumer electronics, high performance audio
speakers.
The MUTE pin is an input for controlling the output
state of the IS31AP2118. A logic high on this
terminal will shut down the outputs. A logic low on
this pin enables the outputs.
The gain of the IS31AP2118 is set by two input
terminals, GAIN0 and GAIN1. Different input logic for
GAIN0 and GAIN1 cause input gain in 4 levels
(20dB, 26dB, 32dB, 36dB).
The IS31AP2118 also provides thermal and over
current protection functions to prevent permanent
damage to the device.
Integrated Silicon Solution, Inc. – www.issi.com
Rev. 00A, 06/10/2012
8
IS31AP2118
PACKAGE INFORMATION
TSSOP-28
Note: All dimensions in millimeters unless otherwise stated.
Integrated Silicon Solution, Inc. – www.issi.com
Rev. 00A, 06/10/2012
9