YDA168B D-4H3B MONO 3.3W Non-Clip DIGITAL AUDIO POWER AMPLIFIER General Description YDA168B (D-4H3B) is an integrated circuit with Max.3.3W (RL=4Ω)×1ch Class-D speaker amplifier. This speaker amplifier uses the filter-less method allowing a speaker to be directly connected to the output and features low-level distortion and noise characteristics. The speaker amplifier, having Yamaha original Power Limit Interlock Non-Clip function, controls Gain automatically and prevents output signals from being clipped at the supply voltage. In addition, this power limit function permits the maximum output to be arbitrarily specified to 100mW to 1000mW according to a speaker to use. Furthermore, this amplifier has the following functions: overcurrent and overtemperature protection functions, DC output protection function, under-voltage malfunction prevention function, as well as EMI noise and the pop noise reduction functions and High PSRR function. 2.5V~5.25V MONO Differential +8dB PWM Output Buffer +10dB 5V 3.3W at BTL YDA168B (D-4H3B) 4Ω~ CTRL PL Non-Clip + Power Limit Power-Down Control Circuit Protection YDA168B Simplified Diagram YDA168B CATALOG CATALOG No.: LSI-4DA168B20 2010.9 YDA168B Features ・Supply Voltage VDD 2.5V to 5.25V ・Input Mono (Differential)×1 ・Output Speaker ( Class-D, BTL) ・Maximum Output 3.3 W×1ch 0.93 W×1ch 1.00 W×1ch 0.75 W×1ch (VDD = 5.0 V, RL = 4 Ω, THD+N = 10 %, TA = 25 °C) (VDD = 3.6 V, RL = 8 Ω, THD+N = 10 %, TA = 25 °C) (VDD = 4.2 V, RL = 8 Ω, THD+N = 1 %, TA = 25 °C) (VDD = 3.6 V, RL = 8 Ω, THD+N = 1 %, TA = 25 °C) ・Maximum Output (Non-Clip) 2.4 W×1ch 0.70W×1ch (VDD = 5.0 V, RL = 4 Ω, THD+N = 1 %, TA = 25 °C) (VDD = 3.6 V, RL = 8 Ω, THD+N = 1 %, TA = 25 °C) ・Distortion (THD+N) 0.045 % (VDD = 3.6 V, RL = 8 Ω, PO = 0.40 W, 1kHz) ・Residual Noise 50 μVrms (VDD = 3.6 V, RL = 8 Ω) ・S/N Ratio 97.2 dB (VDD = 5.0 V, RL = 4 Ω) ・PSRR 75 dB (VDD = 3.6 V, RL = 8 Ω, f = 217 Hz) ・Efficiency 90 % (VDD = 3.6 V, RL = 8 Ω, PO = 0.8 W) ・NCPL (Power Limit interlock Non-Clip function) ・Protection Function Overcurrent Protection Function (OCP) Overtemperature Protection Function (OTP) DC Output Protection Function (DCOP) Under-voltage Malfunction Prevention Function (UVL) ・Power-down Function ・High Speed Startup ・Pop Noise Reduction ・EMI Noise Reduction ・Lead-free Package 2 9-ball WLCSP (YDA168B-PZ) LSI-4DA168B20 YDA168B NCPL (Power Limit Interlock Non-Clip) Function NCPL function allows Non-Clip function to be enabled even though the power limit setting is performed. Non-Clip function automatically controls the PWM amplifier gain so as not to clip the output signals even if the speaker output is clipped at the supply voltage. This control, following the supply-voltage fluctuation, has an effect also on the case that a supply voltage fluctuates, such as a battery etc. And, Power Limit function, allowing a limiting level (Max. Output) to be arbitrarily set, is available for speaker overload protection etc. Non-Clip + Power Limit Non-Clip Old Amp. VDD hold ThrCeonstrolled . is NCPL (Power Limit Interlock Non-Clip) Conceptual Diagram Examples of Effects of using Non-Clip Function Previously, when using a device in an application where the supply voltage may fluctuate, the source volume had been set so as not to distort the sound even at the minimum voltage. But, Non-Clip function allows source volume to be set based on the maximum voltage without regard for distortion. This function automatically controls the gain according to the variation of a supply voltage; therefore, this is an optimum function for an application that needs a sound pressure level to some extent, such as a case using a small speaker, because the sound pressure ♪ Loud is increased. Output (4.2V) Increase of Sound Pressure: No distortion occurs even if the voltage is decreased. (3.3V) YDA168B Usual Case ♪ Max. Lowering of Supply Voltage Min. Soft ♪ g sin a e r Inc dP un o S re su s e r ♪ [W] Setting the source volume to the Min. value of the battery voltage: The volume could not be increased even at a higher voltage. Output Increase of Sound Pressure using Non-Clip Function − Conceptual Diagram Example of Sound Pressure Increase: Music Source Non-Clip Usual The volume had been set to the max. amplitude. Increase of sound pressure with no distortion. Actually Measured Sound Power Limit Function LSI-4DA168B20 3 YDA168B Examples of Effects of using Power Limit Function Power Limit function is a function provided for the purpose of reducing the overload on a speaker and limits the output power *1. Any power limit level, ranging from 100mW to 1000mW, can be freely set. Even if an excessive signal is input, Non-Clip function automatically controls PWM amplifier gain to keep the maximum output power to a constant level. And, when PL pin is connected to GND, the output is set to 0.60W (RL = 8 Ω). *1: This function does not guarantee 100% speaker protection. VDD Power Limit Level Max. THD ≦ 1%(Typ.) Power Limit – Conceptual Diagram Power Limit Example: Music Source Power Limit OFF Controlled to the maximum output 0.3W even in an excessive input. Power Limit = 0.3W(8Ω) Power Limit = 0.1W(8Ω) Controlled to the maximum output 0.1W even in an excessive input. Actually-measured output power for each power limit value 4 LSI-4DA168B20 YDA168B Quick Start/Quick Mute Function Pop noise reduction circuit (Quick Start/Quick Mute) operates at startup or shutdown of the speaker amplifier. This is a function to vary ON/OFF envelopes at a slow rate. Even a high-speed ON/OFF operation, this reduces intermittent sound considerably and eliminates uncomfortable feeling. That is, Quick Start/Quick Mute is a pop noise reduction function with Non-Clip technique applied. 5msec/div LSI-4DA168B20 5msec/div 5 YDA168B Block Diagram VDD YDA168B (D-4H3B) OUT+ IN+ Input Buffer (+8dB) PWM Output Buffer (+10dB) OUT- IN- CTRL Circuit Protection Non-Clip & Power Limit Control Startup & Control OCP OTP DCOP UVL PL AGND PGND YDA168B Block Diagram Pin Arrangement 3 OUT+ PGND OUT- 2 VDD PL CTRL 1 IN+ AGND IN- A B C Pin Assignment (Top View) 6 LSI-4DA168B20 YDA168B Pin Function No. Name I/O Function A1 IN+ IA A2 VDD Power A3 OUT+ O B1 AGND GND B2 PL IA B3 PGND GND C1 IN- IA Differential Input Pin (negative) C2 CTRL IA Power-down and Non-Clip setting pin C3 OUT- O Speaker Output Pin (negative) Differential Input Pin (positive) (Note1, 2) Power Supply Pin Speaker Output Pin (positive) Ground for Analog Circuits Power Limit Setting Pin (Note1) Ground for Output Circuits (Note1, 2) I: Input Pin, O: Output Pin, A : Analog Pin Note 1: Note that leakage current flows through the protection circuit (PMOS Tr.) when applying a voltage higher than VDD to this pin. Note 2: When using a D/A Converter output with Noise-Shaping in the former stage, input a signal whose signal components outside the audible frequency have been sufficiently attenuated (e.g. 90dBV at the frequency ranging from 150 kHz to 320 kHz). Otherwise, Beat Noise (i.e. noise caused by interference between two frequencies) may occur because of signal components in the same band as internal clocks used for PWM modulation. LSI-4DA168B20 7 YDA168B Electrical Characteristics Absolute Maximum Ratings Note) Item Symbol Condition Min. Max. Unit Supply Voltage Range VDD - – 0.3 6.0 V Input Pin Voltage Range VIN IN +, IN – VGND – 0.6 VDD + 0.6 Other input pins VGND – 0.3 VDD + 0.3 Power Dissipation PD25 TA=25 °C *1) PD70 TA=70 °C *1) PD85 TA=85 °C *1) V 1.66 - 0.91 W 0.66 Junction Temperature Tjmax - - 125 ºC Storage Temperature TSTG - – 50 125 ºC Speaker Impedance RLS - 3.2 - Ω Note) Absolute Maximum Ratings are values which must not be exceeded to guarantee device reliability and life, and when using a device in excess of the ratings for even a moment, it may immediately cause damage to the device or may significantly deteriorate its reliability. In the system where the voltage at an input pin may exceed the supply voltage (VDD / GND), use an external diode etc. to limit it to the value lower than absolute maximum rating. * 1: θja = 60 °C/W (4-layer board, No wind, Copper Foil Thickness 35 μm, Wiring Density 326 %, Board Size 100 mm × 80 mm) Recommended Operating Conditions Item Symbol Condition Min. Typ. Max. Supply Voltage VDD Operating Ambient Temperature TA Unit - 2.5 3.6 5.25 V - – 40 25 85 ºC Note) Be sure to use the device within the recommended operating conditions. Be sure to connect all AGND and PGND pins on a board. The slew rate should be less than 1V/μsec when turning on the power. Consumption Current (VDD = 3.6V, VGND = 0V, TA = 25 °C, CTRL = VMOD3, PL = VDD, RL = 8Ω, unless otherwise specified) Symbol Condition Min. Typ. Max. Unit Consumption Current IDD No input, No load - 5.3 - mA Power-down Mode Consumption Current IPD CTRL=VMOD4 - 0.5 - μA Item Note) In the measurement conditions with RL = 8Ω, 8Ω (pure resistor) + 30μH is used. 8 LSI-4DA168B20 YDA168B DC Characteristics (VDD = 2.5V to 5.25V, VGND = 0V, TA = – 40 °C to 85 °C, PL = VDD, unless otherwise specified) Symbol Condition Min. Typ. Max. Unit Startup Threshold Voltage VUVLH - - 2.2 - V Startup Threshold Voltage VUVLL - - 2.0 - V Non-Clip A VMOD1 - 1.5 1.6 VDD V Non-Clip B VMOD2 - 1.0 1.18 1.35 V Non-Clip OFF VMOD3 - 0.65 0.75 0.85 V Power-down VMOD4 - VGND - 0.1 V Power Limit OFF VPDIS - 0.8×VDD - VDD V Power Limit Enable Mode VPENA - 0.45 - 0.7×VDD V Power Limit Fix Mode VPFIX - 0 - 0.1 V High Temperature Protection Function Activated Temperature TOTPH - - 150 - ºC High Temperature Protection Function Released Temperature TOTPL - - 120 - ºC Input leakage Current ICTRL CTRL pin – 1.0 - - μA Item CTRL Control Pin Input Threshold Voltage PL Pin Input Threshold Voltage AC Characteristics (VDD = 2.5V to 5.25V, VGND = 0V, TA = – 40 °C to 85 °C, CTRL = VMOD3, PL = VDD, unless otherwise specified) Symbol Condition Min. Typ. Max. Unit Startup Time (Power-down Cancel) TSTUP - - 20 - msec Power-down Setting Time TPDWL - 25 - - msec Active Setting Time TPDWH - 45 - - msec DC Error Detection Voltage VDCDET VDD = 3.6V - 0.3 - V DC Error Detection Time TDCDET - - 1.0 - sec Input Cut-off Frequency fc CIN = 1.0μF, RIN = 0 Hz Item Non-Clip A Non-Clip B Attack Time TATA Release Time TRLA Attack Time TATB Release Time TRLB Carrier Clock Frequency FPWM *1 CTRL = VMOD1 CTRL = VMOD2 - - 16 - - 0.5 - - 380 - - 0.1 - - 380 - - 500 - msec/dB msec/dB kHz *1: CIN : DC-cut capacitor at the input stage, RIN : External resistor for setting Gain LSI-4DA168B20 9 YDA168B Analog Characteristics (VDD = 3.6V, VGND = 0V, TA = 25 °C, CTRL = VMOD3, PL = VDD, AV = 18dB, RL = 8Ω, 1kHz, sine wave, unless otherwise specified) Item Symbol Condition VDD = 5.0V, RL = 4Ω, THD = 10% Maximum Output Non-Clip Maximum Output Power Limit Output Voltage Gain Total Harmonic Distortion Residual Noise S/N Ratio PSRR Efficiency Output Offset Voltage Frequency Characteristics *1: CIN PO PONC Min. Typ. Max. - 3.3 - VDD = 3.6V, RL = 8Ω, THD = 10% - 0.93 - VDD = 4.2V, RL = 8Ω, THD = 1% - 1.00 - VDD = 3.6V, RL = 8Ω, THD = 1% - 0.75 - VDD = 5.0V, RL = 4Ω CTRL = VMOD1 - 2.4 - Unit W W VDD = 3.6V, RL = 8Ω CTRL = VMOD1 - 0.70 - POPL PL = 0V (Fix Mode) - 600 - mW AV - - 18 - dB THD+N PO = 0.40W, 1kHz BW : 20kHz - 0.045 - % N BW : 20kHz, A-Filter - 50 - μVrms - 97.2 - dB VDD = 5.0V, RL = 4Ω BW : 20kHz, A-Filter SNR PSRR f = 217Hz, Vripple = 0.1Vpp - 75 - dB η PO = 0.8W - 90 - % VO - - ±3 - mV Fres CIN = 1.0 μF 100Hz to 20kHz – 0.4 - 0.4 dB *1 : DC-cut capacitor at the input stage Note) All analog characteristics were obtained by using Yamaha evaluation board. Depending upon pattern layout etc., its characteristics may vary. In the measurement conditions with RL = 8Ω, 8Ω (pure resistor) + 30μH is used. 10 LSI-4DA168B20 YDA168B Package Dimensions 注) 1. 表面実装LSIは、保管条件、および、半田付けについての特別な配慮が必要です。 2. 組立工場により、寸法や形状などが異なる場合があります。 詳しくはヤマハ代理店までお問い合わせください。 Note: 1. Special attention needs to be paid to the storage conditions and soldering method of the surface mount IC. 2. Dimension, form, etc. may differ depending on assembly plants. For details, please contact your local Yamaha agent. LSI-4DA168B20 11 YDA168B Application Example 2.5V ~ 5.25V (10μF) RL < 8Ω or VDD > 4.5V A2 1μF VDD YDA168B (D-4H3B) Input terminal Input terminal A1 IN+ 0.1μF C1 Input Buffer (+8dB) OUT+ A3 OUT- C3 Output Buffer (+10dB) PWM IN- 0.1μF 4Ω ~ GPIO DCV Input C2 B2 CTRL Circuit Protection Startup & Control Non-Clip & Power Limit Control PL PGND B1 B3 AGND Differential Input Single-ended Input External Gain Setting CIN CIN 12 OCP OTP DCOP UVL RIN RIN A1 C1 IN+ IN- LSI-4DA168B20 PRECAUTIONS AND INSTRUCTIONS FOR SAFETY WARNING Prohibited Prohibited Prohibited Instructions Do not use the device under stresses beyond those listed in Absolute Maximum Ratings. Such stresses may become causes of breakdown, damages, or deterioration, causing explosion or ignition, and this may lead to fire or personal injury. Do not mount the device reversely or improperly and also do not connect a supply voltage in wrong polarity. Otherwise, this may cause current and/or power-consumption to exceed the absolute maximum ratings, causing personal injury due to explosion or ignition as well as causing breakdown, damages, or deterioration. And, do not use the device again that has been improperly mounted and powered once. Do not short between pins. In particular, when different power supply pins, such as between high-voltage and low-voltage pins, are shorted, smoke, fire, or explosion may take place. As to devices capable of generating sound from its speaker outputs, please design with safety of your products and system in mind, such as the consequences of unusual speaker output due to a malfunction or failure. A speaker dissipates heat in a voice-coil by air flow accompanying vibration of a diaphragm. When a DC signal (several Hz or less) is input due to device failure, heat dissipation characteristics degrade rapidly, thereby leading to voice-coil burnout, smoking or ignition of the speaker even if it is used within the rated input value. CAUTION Prohibited Instructions Instructions Instructions Instructions Instructions Instructions Instructions Do not use Yamaha products in close proximity to burning materials, combustible substances, or inflammable materials, in order to prevent the spread of the fire caused by Yamaha products, and to prevent the smoke or fire of Yamaha products due to peripheral components. Generally, semiconductor products may malfunction and break down due to aging, degradation, etc. It is the responsibility of the designer to take actions such as safety design of products and the entire system and also fail-safe design according to applications, so as not to cause property damage and/or bodily injury due to malfunction and/or failure of semiconductor products. The built-in DSP may output the maximum amplitude waveform suddenly due to malfunction from disturbances etc. and this may cause damage to headphones, external amplifiers, and human body (the ear). Please pay attention to safety measures for device malfunction and failure both in product and system design. As semiconductor devices are not nonflammable, overcurrent or failure may cause smoke or fire. Therefore, products should be designed with safety in mind such as using overcurrent protection circuits to control the amount of current during operation and to shut off on failure. Products should be designed with fail safe in mind in case of malfunction of the built-in protection circuits. Note that the built-in protection circuits such as overcurrent protection circuit and high-temperature protection circuit do not always protect the internal circuits. In some cases, depending on usage or situations, such protection circuit may not work properly or the device itself may break down before the protection circuit kicks in. Use a robust power supply. The use of an unrobust power supply may lead to malfunctions of the protection circuit, causing device breakdown, personal injury due to explosion, or smoke or fire. Product's housing should be designed with the considerations of short-circuiting between pins of the mounted device due to foreign conductive substances (such as metal pins etc.). Moreover, the housing should be designed with spatter prevention etc. due to explosion or burning. Otherwise, the spattered substance may cause bodily injury. The device may be heated to a high temperature due to internal heat generation during operation. Therefore, please take care not to touch an operating device directly. v02