IS31AP2117 8W/CH STEREO CLASS-D AUDIO POWER AMPLIFIER Advanced Information July 2012 GENERAL DESCRIPTION FEATURES The IS31AP2117 is an 8W/CH, 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. IS31AP2117 has several key features which distinguishes itself from other alternatives on the market. On-board AGC, EMI suppression, and 92% 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 IS31AP2117 integrates automatic gain control function with adjustable power limit. When output power goes over the power limit, IS31AP2117 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 IS31AP2117 has short circuit and thermal protection features integrated on board. Mono 6W, at 8Ω @ 1% THD, VCC=12V Mono 15W, at 8Ω @ 10% THD, VCC=16V Dual 8W/CH, at 8Ω @ 10% THD, VCC =24V 92% 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 Mute features Clock selection TSSOP-28 package APPLICATIONS Consumer audio equipment HDTV, home theater equipment Automotive audio amplifier Performance stereo speakers TYPICAL APPLICATION CIRCUIT VCC 8V~26V 10 F 7 PVCC AVCC VCC 8V~26V 15,16 27,28 0.1 F 470 F 1 F 14 2 5 Micro Controller 6 1 MUTE AVDD FSEL GAIN0 AGCLMT SDB IS31AP2117 BSL OUTL Right Input 12 PGND 26 0.22 F 470 F 24,25 33 H 20~23 0.22 F 0.22 F INR+ INR- CINR1 F OUTR BSR 18,19 17 33 H 470 F 0.22 F CINL+ 1 F 3 Left Input 11 GAIN1 100k CINR+ 1 F 13 10 4 INL+ BYPASS INL- AGND 9 8 1 F CINL1 F Figure 1 Typical Application Circuit (Stereo Mode Application) Integrated Silicon Solution, Inc. – www.issi.com Rev. 00A, 07/10/2012 1 IS31AP2117 VCC 8V~26V 10 F 7 PVCC AVCC VCC 8V~26V 15,16 27,28 0.1 F 470 F 1 F 14 2 5 Micro Controller 6 1 MUTE AVDD FSEL GAIN0 AGCLMT SDB IS31AP2117 BSL OUTL Audio Input 3 11 GAIN1 100k CINR+ 1 F 13 10 PGND 26 24,25 0.22 F 33 H 20~23 0.22 F 0.22 F INR+ INL+ CINL+ 1 F OUTR BSR 18,19 17 33 H 0.22 F CINR1 F 12 4 INR- BYPASS INL- AGND 9 8 1 F CINL1 F Figure 2 Typical Application Circuit (Mono Mode Application) Integrated Silicon Solution, Inc. – www.issi.com Rev. 00A, 07/10/2012 2 IS31AP2117 PIN CONFIGURATION Package Pin Configuration (Top View) TSSOP-28 ORDERING INFORMATION INDUSTRIAL RANGE: -40°C TO +85°C Order Part No. Package QTY/Tube IS31AP2117-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, 07/10/2012 3 IS31AP2117 PIN DESCRIPTION No. Pin Description 1 SDB Shutdown control. Active low. 2 FSEL Frequency select input pin. (low = 300kHz, high = 400kHz) 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 BYPASS Reference for pre-amplifier inputs. Nominally equal to AVDD/2. 10 AVDD 5V regulated output. Connect 2.2μF to AGND. 11 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. 12 INR- Negative audio input for right channel. 13 INR+ Positive audio input for right channel. 14 MUTE Mute mode control. 15, 16 PVCC Power supply for right channel H-bridge. PVCCR and PVCCL must be connected together on the PCB. 17 BSR Bootstrap I/O for right channel, high-side FET. 18, 19 OUTR Class-D H-bridge output for right channel. 20~23 PGND Power ground for the H-bridges. 24, 25 OUTL Class-D H-bridge output for left channel. 26 BSL Bootstrap I/O for left channel, high-side FET. 27, 28 PVCC Power supply for left channel H-bridge. PVCCR and PVCCL must be connected together on the PCB. Thermal Pad Connect to GND. Integrated Silicon Solution, Inc. – www.issi.com Rev. 00A, 07/10/2012 4 IS31AP2117 ABSOLUTE MAXIMUM RATINGS Supply voltage (AVCC, PVCC), VCC Voltage at SDB, GAIN0, GAIN1, FSEL, MUTE pins Voltage at IN, AGCLMT pins Voltage at OUTR, OUTL Voltage 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 ICC Quiescent current VSDB = 2V, no load (without LC) 12 mA ISD Shutdown current VSDB = 0.8V 200 µA IO = 500mA 150 mΩ VI = 0, Gain = 36dB 1.5 mV Gain1= 0.8V, Gain0= 0.8V 20 Gain1= 0.8V, Gain0= 2V 26 Gain1= 2V, Gain0= 0.8V 32 Gain1= 2V, Gain0= 2V 36 RDS(ON) VOS G Drain-source resistance 8 Max. on-state Class-D output offset voltage (measured differentially) Gain dB tON Turn-on time VSDB = 2V 50 ms tOFF Turn-off time VSDB = 0.8V 2 µs Internal regulated output IO = 5mA 5 V AVDD RL Speaker resistance 3.6 Ω Logic Electrical Characteristics (SDB, FSEL, GAIN0, GAIN1, MUTE) 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 Integrated Silicon Solution, Inc. – www.issi.com Rev. 00A, 07/10/2012 5 IS31AP2117 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 = 20 dB, Inputs ac-coupled to AGND Continuous output power THD+N = 10%, f = 1kHz, RL= 4Ω Total harmonic distortion f = 1kHz, PO = 1W (half-power) + noise Min. Typ. Max. Unit -60 dB 5 W 0.1 % Output integrated noise 20Hz ~ 22kHz, A-weighted filter, Gain = 20dB 65 µV SNR Signal-to-noise ratio Maximum output at THD+N < 1%, f = 1kHz, Gain = 20dB, A-weighted 102 dB FOSC Oscillator frequency VFSEL = 0.8V 290 VFSEL = 2V 390 VN kHz Thermal trip point 160 ℃ Thermal hysteresis 60 ℃ Integrated Silicon Solution, Inc. – www.issi.com Rev. 00A, 07/10/2012 6 IS31AP2117 FUNCTIONAL BLOCK DIAGRAM AVDD AVCC PVCC LDO BSL RI INL- Output Stage AGC INL+ OUTL RI Band Gap Clock Generator AGC Reference AGCLMT Bias Bypass SDB BYPASS GAIN0 TTL Buffer Sequence GAIN1 FSEL MUTE RI INL+ AGC INL- Output Stage RI OUTL BSL PGND Integrated Silicon Solution, Inc. – www.issi.com Rev. 00A, 07/10/2012 AGND 7 IS31AP2117 FUNCTION DESCRIPTION The IS31AP2117 is an 8W, dual channel, Class-D stereo 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 IS31AP2117. A logic high on this terminal will shut down the outputs. A logic low on this pin enables the outputs. The gain of the IS31AP2117 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 IS31AP2117 also provides thermal and over current protection functions to prevent permanent damage to the device. Integrated Silicon Solution, Inc. – www.issi.com Rev. 00A, 07/10/2012 8 IS31AP2117 PACKAGE INFORMATION TSSOP-28 Note: All dimensions in millimeters unless otherwise stated. Integrated Silicon Solution, Inc. – www.issi.com Rev. 00A, 07/10/2012 9