Small-sized Class-D Speaker Amplifiers Analog Input Monaural Class-D Speaker Amplifier No.10101EAT08 BD5468GUL ●Description BD5468GUL is a monaural Class-D speaker amplifier that contained ALC function for mobile phone, portable type electronic devices etc. LC filter of speaker output is not needed, can form monaural speaker amplifier. with 3 external parts. ALC, short for Automatic Level Control, is a function that automatically adjusts up to the level of suppression of distortion (clip) of output wave form during excessive input. The time until the limit release operation of output level is called the release time (or recovery time). This IC adopts high-speed release time (4ms/1dB Typ.) and suits the application which repeats big volume in the short time such as the camera shutter sound. Through Class-D operation, efficiency is high low power consumption that is why it’s suitable for battery drive application. The current consumption during shutdown when lowered to 0.01μA(Typ.), from the shutdown to the operation time is early and at the same time pop sound is few that is why its also suitable in repeating active and shutdown. ●Feature 1) Contains Digital ALC (Automatic Level Control) Function 2) External Parts: 3points 3) Ultra slim type package: 9pin WL-CSP(1.7×1.7×0.55mmMax.) 4) BD5460/61GUL (No ALC Function, Gain Fixed Goods) Pin Compatible Specs BD5465/66/67GUL (ALC Function, Gain Fixed Goods) Pin Compatible Specs 5) Maximum Gain: 13dB (Typ.) [during ALC operation, 13～-2dB@1dB Step] 6) ALC high speed release (recovery) time: 4ms/1dB(Typ.) 7) Limit output power : 0.7W (Typ.) [VDD=4.2V, RL=8Ω, THD+N≦1%] : 0.5W (Typ.) [VDD=3.6V, RL=8Ω, THD+N≦1%] 8) Audio Analog Input (corresponds to single-end input / differential input) 9) Output LC filter free 10) Pop noise suppression circuit 11) Shutdown Function (use as mute at the same time) [low shutdown current = 0.01μA (Typ.)] 12) Contains protection circuit: output short, thermal shutdown, under voltage lockout (UVLO) ●Applications Mobile phone, Portable audio device, PND, DSC, Note-PC etc. ●Absolute Maximum Rating (Ta=+25℃) Parameter Power Supply Voltage Power Dissipation Storage Temperature Range SDNB Pin Input Range IN+, IN- Pin Input Range Symbol Ratings Unit VDDmax PVDDmax 7.0 V Pd 690※ mW Tstg -55 ～ +150 ℃ VSDNB -0.3～VDD+0.3 V VIN -0.3～VDD+0.3 V ※ In case Ta=+25℃ or more, 5.52 mW decrease per 1℃ When mounting Rohm Typical Board 50.0mm×58.0mm (Material :Glass Epoxy) ●Operation Range Parameter Temperature Power Supply Voltage Common Mode Input Voltage Range Symbol Range Unit Topr -40 ～ +85 ℃ VDD PVDD +2.5 ～ +5.5 V VIC +0.5 ～ VDD-0.8 V ◎ This product is not designed for protection against radioactive rays. www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 1/19 2010.09 - Rev.A Technical Note BD5468GUL ●Electrical Characteristic (Ta=+25℃, VDD=+3.6V, Unless specified otherwise) Parameter Symbol Limits Min. Typ. Max. Unit Conditions ＜All Device＞ IC Active, No Load VSDNB =VDD IC Shutdown VSDNB =GND Circuit current (no signal) ICC ― 3 6 mA Circuit current (shutdown) ISDN ― 0.01 2 μA PO 0.035 2 ×VDD 0.044 2 ×VDD 0.055 2 ×VDD W Total harmonic distortion THD+N ― 0.2 1 % Maximum Gain GMAX 12 13 14 dB BTL, *1 ALC Limit level VLIM 1.89 ×VDD 1.5 ×VDD BTL, *1 VREL 1.68 ×VDD 1.34 ×VDD Vpp ALC Release level 1.5 ×VDD 1.19 ×VDD Vpp BTL, *1 Switching frequency fOSC 150 250 350 kHz Start-up time TON 0.73 1.02 1.71 msec Ri 36 55 74 kΩ Gain=13dB H VSDNBH 1.4 ― VDD V IC Active L VSDNBL 0 ― 0.4 V IC Shutdown H ISDBNH 12 24 36 μA VSDNB =3.6V L ISDNBL -5 ― 5 μA VSDNB =0V ＜Audio Feature＞ Limit output power Audio input resistance BTL, f=1kHz, RL=8Ω THD+N≦1% , *1 BTL, fin=1kHz, RL=8Ω PO =0.3W, *1 ＜Control Terminal＞ SDNB terminal Threshold voltage SDNB terminal Inflow Current *1 Filter bandwidth for measurement :400～30kHz, LC filter for AC measurement :L=22μH / C=1μF, BTL :Voltage between A3,C3 ●Shutdown control Control terminal Conditions SDNB H IC operation (active) L IC stop (shutdown) ●ALC Parameter ALC Parameter Attack Time (Typ.) ～1ms/1dB @ fin=100Hz ～0.5ms/1dB @ fin=1kHz ～0.05ms/1dB @ fin=10kHz Release Time(Typ.) Gain Switch Step (Typ.) 4ms/1dB @ fin=100～10kHz ±1dB The gain switch timing during ALC operation occurs at zero cross point of audio output voltage. For that, attack time, release time will change at input frequency “fin”. ALC Parameter is fixed. ALC operation doesn’t correspond to noise of impulse. www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 2/19 2010.09 - Rev.A Technical Note BD5468GUL ●Measurement Circuit Diagram <Audio Characteristics Method of Evaluation > ■In case LC filter is not used +Battery C3 10uF VDD SDNB Shutdown Signal B2 Shutdown Control C2 150k (Typ .) H : IC Active L : IC Shutdown B1 PVDD BIAS OSC ALC 0. 1uF IN + A1 Ri OUT + Rf C3 C2 PWM 0. 1uF HBridge OUT - IN C1 A3 Ri C1 Rf BTL GND A2 B3 Measurement Instrument PGND LPF AP AUX-0025 Audio Precision (AP) ■In case LC filter is used +Battery C3 10uF VDD Shutdown Signal SDNB B2 Shutdown Control C2 150k (Typ .) H : IC Active L : IC Shutdown B1 PVDD BIAS OSC ALC 0. 1uF IN + A1 Ri 22uH Rf C3 C2 PWM 0. 1uF 1 uF HBridge 1uF IN C1 C1 A3 Ri Rf 22uH BTL GND A2 B3 PGND Audio Precision (AP ) Audio characteristics can be measured to insert LC filter between output pin and speaker load, if you don’t have measurement equipment for switching amplifier, like AUX-0025, Audio Precision. Arrange the LC filter directly close to output pin. In case of L=22μH, C=1μF, cut off frequency becomes: 1 1 34kHz 2 LC 2 22 H 1F For Inductor L, please use huge current type. fc www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. (Reference)TDK : SLF12575T-220M4R0 3/19 2010.09 - Rev.A Technical Note BD5468GUL ●External Dimension Diagram Top View Bottom View 5468 LOT No. 9pin WL-CSP (VCSP50L1) [ 1.7×1.7×0.55mm Max, 0.5mm Pitch ] (Unit : mm) Side View ●Block Diagram ●Pin Arrangement (Bottom View) VDD B1 SDNB Shutdown Control C2 B2 PVDD BIAS 150k (Typ.) OSC ALC IN+ Ri OUT+ Rf A1 C3 PWM HBridge IN- OUT- C1 A3 Ri Rf GND A2 ●Pin Explanation Pin No. Pin Name C3 IN- SDNB OUT+ B1 B2 B3 VDD PVDD PGND A1 A2 A3 IN+ GND OUT- Explanation IN+ A2 GND A3 OUT- Class-D BTL output - terminal B1 VDD VDD terminal (signal) B2 PVDD VDD terminal (power) Audio differential input+ terminal GND terminal (signal) B3 PGND C1 IN- C2 SDNB Shutdown control terminal C3 OUT+ Class-D BTL output+ terminal www.rohm.com C2 B3 PGND A1 © 2010 ROHM Co., Ltd. All rights reserved. Index Post C1 GND terminal (power) Audio differential input - terminal 4/19 2010.09 - Rev.A Technical Note BD5468GUL ●Application circuit example SHORT the power supply pin VDD (B1), PVDD (B2) at board pattern, then use singleness power supply. Singleness power supply (+2.5～+5.5V) +Battery C3 10 uF Signal VDD Shutdown Control Shutdown Signal SDNB B1 B2 Shutdown Control C2 150k (Typ.) H: IC Active L: IC Shutdown VDD PVDD Power VDD BIAS OSC Class-D BTL Output ALC Audio Input + Differential Input 0 .1 uF IN+ A1 Ri OUT + Rf C3 PWM Audio Input - 0 .1 uF HBridge IN- OUT - C1 A3 Rf Ri Signal GND Audio Differential Input GND A2 B3 PGND Power GND Fig1. Differential Input (With Input Coupling Capacitor) +Battery Singleness power supply(+2.5～+5.5V) C3 10 uF Signal VDD Shutdown Control Shutdown Signal SDNB B1 B2 Shutdown Control C2 150k (Typ.) H: IC Active L: IC Shutdown VDD PVDD Power VDD BIAS OSC Class-D BTL Output ALC IN+ Audio Input + Differential Input A1 Ri OUT + Rf C3 PWM Audio Input - HBridge IN- OUT - C1 A3 Audio Differential Input Ri Rf Signal GND GND A2 B3 PGND Power GND Fig2. Differential Input (Without Input Coupling Capacitor) www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 5/19 2010.09 - Rev.A Technical Note BD5468GUL Singleness power supply (+2.5～+5.5V) +Battery C3 10uF Signal VDD VDD Shutdown Control Shutdown Signal SDNB B2 Shutdown Control C2 150k (Typ.) H: IC Active L: IC Shutdown B1 PVDD Power VDD BIAS OSC Class-D BTL Output Audio Single End Input Audio 0. 1uF ALC IN + A1 Input Ri OUT + Rf C3 PWM 0. 1uF H Bridge IN - OUT - C1 A3 Ri Rf Signal GND GND A2 B3 PGND Power GND Fig3. Single end input (during IN+ input) Singleness power supply (+2.5～+5.5V) +Battery C3 10uF Signal VDD Shutdown Control Shutdown Signal SDNB B1 B2 Shutdown Control C2 150k (Typ.) H: IC Active L: IC Shutdown VDD PVDD Power VDD BIAS OSC Class-D BTL Output ALC 0. 1uF IN + A1 Ri OUT + Rf C3 PWM Audio 0. 1uF Input HBridge IN - OUT - C1 Audio Single End Input A3 Ri Rf Signal GND GND A2 B3 PGND Power GND Fig4. Single end input (during IN- Input) www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 6/19 2010.09 - Rev.A Technical Note BD5468GUL ●About the difference of differential input and single end input ・BD5468GUL uses full differential amplifier. BD5468GUL is a Class-D but, in relation to Audio Input and Output, is same with the conventional Class-AB Amplifier. For simplicity purposes of the diagram, the Class-D amplifier output stage is omitted in the following explanation. About the resistor, signal on the diagram Gives meaning to changes of gain setting by means of ALC Control. 1) Differential Input Opposite phase Audio Input 0V IN+ A1 OUTA3 (IN+ - IN- ) Audio Input (OUT+ - OUT- ) 0V C1 C3 IN- OUT+ Opposite phase 2) Single end input (during IN+input ) Audio Input 0V Opposite phase IN+ OUT- A1 A3 Same p hase (IN+ - IN- ) 0V ー (OUT+ - OUT- ) C1 C3 IN- ー OUT+ IN+ ー OUT- 3) Single end input (during IN-input ) 0V ー A1 A3 (IN+ - IN- ) e e phas Opposit (OUT+ - OUT- ) 0V Audio Input C1 C3 INOpposite phase OUT+ ○About single end input ・Input is possible whether IN+ or IN- Pin. Don’t make input pin open, through the input coupling capacitor, please connect to GND as seen on the example above. Audio input pin should make “mute” condition, not “open” condition when you don’t input any signal. ・During single end input IN+ and IN-, there is a difference with the phase relation of input and output. Because of differential amplifier, if input (IN+ - IN-), output(OUT+ - OUT-), the audio input and output phase relation will become: Phase IN+ Input IN- Input Audio Input ⇒ output (OUT+ - OUT-) Same phase Opposite phase www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 7/19 2010.09 - Rev.A Technical Note BD5468GUL ○Gain calculation 【Differential Input】 【single end input】 +Battery +Battery Cs Cs VDD Shutdown Signal SDNB B2 PVDD 150k (Typ.) VDD Shutdown Signal Shutdown Control C2 H: IC Active L: IC Shutdown B1 SDNB BIAS Shutdown Control C2 150k (Typ.) H: IC Active L: IC Shutdown B1 ALC ALC IN+ Vins Vins A1 Ci Ri A1 C3 HBridge PWM INC1 Vins Ci OUT+ Rf C3 PWM IN- HBridge C1 Rf Ci GND A2 Ri VIN (=Vins) 0.1uF OUTA3 Ri Ci IN+ < Audio Source > 0.1uF OUT+ Rf VIN (=2Vins) 0.1uF BIAS OSC OSC < Audio Source > 0.1uF B2 PVDD OUTA3 Ri Rf GND A2 B 3 PGND B 3 PGND When Input Level is calculated at IC typical and audio source typical, when input coupling capacitor (Ci) value is large enough,every gain during the differential input and single end input will become: Typical Input Level Differential Output IC Audio Source Single End Output Formula① Formula② Formula① 1. IC reference(Difference Input, Single End Input) :Formula ① VIN means the Input Voltage between IC Input Pin (IN+, IN-), VOUT means the output voltage between IC Output Pin ( OUT+, OUT- ). During differential input and single end input, the gain calculation formula at IC reference which includes ALC operation is written below: Gain = 20×log | VOUT/VIN | =+13～-2 (Typ.) [dB] ・・・ Formula① 2. Audio Source reference(Differential Input) : Formula ② When the input level of audio source is Vins, the relation with the input voltage VIN between IC input pin is written below: Vins = VIN / 2 During differential input, at audio source referece that includes ALC operation, gain calculation formula will become : Gain = 20×log | VOUT / Vins | = 20×log | 2×VOUT / VIN | = +19～+4 (Typ.) [dB] ・・・Formula② 3. Audio Source reference (Single End Input) :Formula ① When the Input level of audio source is Vins, the relation with input voltage VIN between IC input pin (IN+,IN-) becomes: Vins = VIN During single end input, at the audio source that includes ALC operation, gain calculation formula becomes: Gain = 20×log | VOUT / Vins | = 20×log | VOUT / VIN | = +13～-2 (Typ.) [dB] ・・・ Formula① www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 8/19 2010.09 - Rev.A Technical Note BD5468GUL ●Audio Input Pin External LPF connection example ■External LPF connection example st The connection example of 1 -order LPF which is formed at Resistor RLPF and Capacitor CLPF , to the Audio Input Pin IN+/- (A1, C1 Pin) is shown below. The cut frequency of input LPF, together with the single end input and differential input is written below: fcLPF = 1 / (2×π×RLPF×CLPF) [Hz] Ex) fcLPF=10kHz ⇒ CLPF =0.01μF, RLPF=1.59kΩ 1) During single end input When LPF is connected to audio input pin at single end input setting, at start-up characteristics of audio input pin IN+/-, during start-up with unbalance (power supply ON/OFF, or shutdown ON/OFF), there is a risk that POP sound will occur so please be careful. When no audio input, and in order to prevent output noise, please make previous IC “mute” condition, not “open” condition. Please refer at the same time to POP Sound countermeasure example. +Battery Cs VDD B1 B2 PVDD Shutdown Signal H： IC Active L ：IC Shutdown SDNB Shutdown Control C2 BIAS 150k (Typ .) ALC Input Impedance OSC Front IC Ro RLPF IN+ A1 Ci Ri C3 CLPF RLPF Pop sound → countermeasure Ci OUT+ Rf PWM IN- HBridge C1 CLPF Ri Rf Speaker A3 OUT- GND A2 B3 PGND www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 9/19 2010.09 - Rev.A Technical Note BD5468GUL 2) Differential Input +Battery Cs VDD B1 B2 PVDD Shutdown Signal SDNB H： IC Active L： IC Shutdown Shutdown Control C2 BIAS 150k (Typ.) ALC Input Impedance Front IC Ro OSC LPF Ci RLPF IN+ Ri OUT+ Rf A1 C3 CLPF Ro PWM Ci RLPF INC1 CLPF Ri HBridge A3 Rf GND A2 B3 Speaker PGND OUT- ■Caution during External LPF Setting External LPF Resistor RLPF which is composed of IC input resistor Ri, forms input impedance. The bigger the resistor value of LPF resistor RLPF, the more it will decrease the gain. When the input capacitor Ci has enough large capacity value, the relation among external LPF resistor RLPF and IC input resistor Ri and Gain will become: Gain = 20×log | Rf / (Ri + RLPF ) | [dB] Input resistor Ri of BD5468GUL and resistor value of feedback resistor Rf will become the following below, during ALC operation, changes at ±1dB step, and becomes 16 stages switch specs. #1. Ri=55kΩ(Typ.), Rf=245kΩ(Typ.) @Gain=13dB #2. Ri=60kΩ(Typ.), Rf=240kΩ(Typ.) @Gain=12dB #3. Ri=66kΩ(Typ.), Rf=234kΩ(Typ.) @Gain=11dB ↓ #15. Ri=159kΩ(Typ.), Rf=141kΩ(Typ.) @Gain=-1dB #16. Ri=167kΩ(Typ.), Rf=132kΩ(Typ.) @Gain=-2dB Also with the driver ability of previous IC step, after checking, constant setting of external LPF and Resistor RLPF. www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 10/19 2010.09 - Rev.A Technical Note BD5468GUL ●Evaluation Board Circuit Diagram Connect to GND Connect to Power Supply (VDD=+2.5～5.5V) VDD C3 10uF VDD VDD B1 SDNB Shutdown Signal Shutdown Control C2 H： IC Active B2 PVDD BIAS 150k (Typ.) L： IC Shutdown OSC Audio Input Audio Input+ ALC 0.1uF IN+ A1 Differential Input Ri OUT+ Rf C3 C2 Audio Input- PWM 0.1uF HBridge OUT- INC1 C1 Ri BD5468GUL A3 Rf GND A2 GND Connect to input signal B3 PGND Connect to Speaker ※Power Supply terminals VDD(B1), PVDD(B2) are SHORT in the board pattern and use a single power. ●Evaluation Board Parts List Qty. Item Description SMD Size Manufacturer/ Part Number 2 C1, C2 Capacitor, 0.1μF 0603 Murata GRM188R71C104KA01D 1 C3 Capacitor, 10μF A (3216) ROHM TCFGA1A106M8R 1 S1 Slide Switch 4mm X 10.2mm NKK SS-12SDP2 1 U1 IC, BD5468GUL, Mono Class-D Audio Amplifier 1.7mm X 1.7mm WLCSP Package ROHM BD5468GUL 1 PCB1 Printed-Circuit Board, BD5468GUL EVM ― ― ●About the external part ① Input coupling capacitor (C1, C2) Input coupling capacitor is 0.1μF. Input impedance during maximum gain 13dB is 55kΩ (Typ.). A high-pass filter is composed by the input coupling capacitor and the input impedance. Cut-off frequency”fc” by the formula below, through input coupling capacitor C1(=C2) and input impedance Ri. 1 fc ٛٛٛٛ 2 Ri C1 In case of Ri=55kΩ, C1(=C2)=0.1μF, cut-off frequency is about 29Hz ② Power Supply Decoupling Capacitor (C3) Power Supply Decoupling Capacitor is 10uF. When the capacity value of Power Supply Decoupling Capacitor is made small, it will have an influence to the audio characteristics. When making it small, be careful with the audio characteristics at actual application. ESR (equivalent series resistor) is low enough; please use capacitor with capacity value of 1μF or more. www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 11/19 2010.09 - Rev.A Technical Note BD5468GUL ●Evaluation Board PCB Layer TOP Layer Silk Pattern BD5468GUL TOP Layer Bottom Layer www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 12/19 2010.09 - Rev.A Technical Note BD5468GUL ●About IC Thermal Design The IC Characteristics has a big relation with the temperature that will be used, to exceed the maximum tolerance junction temperature, can deteriorate and destroy it. Instant destruction and long-time operation, from these 2 standpoints, there is a need to be careful with regards to IC thermal. Please be careful with the next points. The absolute maximum rating of IC shows the maximum junction temperature (TjMAX.) or the operation temperature range (Topr), so refer to this value, use Pd-Ta characteristics (Thermal reduction ratio curve). If input signal is excessive at a state where heat radiation is not sufficient, there will be TSD(Thermal Shutdown) For TSD, the chip temperature operates at around 180℃, releases if its around 120℃ or less. Since the aim is to prevent damage on the chip, please be careful because the long use time at the vicinity where TSD operates can deteriorate the dependency of the IC. Thermal Reduction Ratio Curve Reference Data VCSP50L1 2.0 Measurement Condition: ROHM Typical Board Mount Board Size: 50mmx58mm Power Dissipation Pd(W) 1.5 1.0 0.69W θja = 0.5 0.0 0 25 50 75 85 181.8℃/W 100 125 150 Perimeter Temperature Ta(℃) Note : This value is the real measurement, but not the guaranteed value. The value of power dissipation changes based on the board that will be mounted. The power dissipation of main IC during the heat dissipation design of many mounted boards, will become bigger than the value of the above graph. www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 13/19 2010.09 - Rev.A Technical Note BD5468GUL Evaluation data - Typical Characteristics (1/4) ●Evaluation data – Typical characteristics (1/4) Efficiency - Output power f=1kHz, RL=8Ω+33uH 90 80 70 VDD = 5.0V VDD = 3.6V VDD = 3.6V 70 60 VDD = 2.5V 50 40 30 VDD=2.5V VDD=3.6V VDD=5.0V 20 10 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 Output Power [W] 0.9 1 50 40 30 VDD=2.5V VDD=3.6V VDD=5.0V 20 10 0 0 1.1 0 1.2 0 0.2 0.4 0.6 0.8 1 1.2 Output Power [W] Fig.5 Figure.1 1.4 1.6 1.8 2 Fig.6 Figure.2 Supply Current vs Output power f=1kHz, RL=8Ω+33uH 300 VDD = 5.0V VDD = 2.5V 60 Efficiency [%] Efficiency [%] Efficiency vs Output power f=1kHz, RL=4Ω+33uH 80 Supply Current vs Output power f=1kHz, RL=4Ω+33uH 450 400 250 350 VDD = 5.0V VDD = 3.6V Icc [mA] Icc [mA] VDD = 5.0V 300 200 150 VDD = 2.5V 50 250 VDD = 2.5V 200 150 VDD=2.5V VDD=3.6V VDD=5.0V 100 VDD = 3.6V VDD=2.5V VDD=3.6V VDD=5.0V 100 50 0 0 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 Output Power [W] 0.8 0.9 1 1.1 0 1.2 0.2 0.4 0.6 0.8 1 1.2 1.4 Output Power [W] Fig.7 Figure.3 1.8 2 Fig.8 Figure.4 Power dissipation vs Output power f=1kHz, RL=4Ω+33uH Power dissipation vs Output power f=1kHz, RL=8Ω+33uH 0.3 1.6 0.45 0.40 0.25 VDD = 5.0V 0.35 0.30 VDD = 5.0V 0.15 Pd [W] Pd [W] 0.2 VDD = 3.6V VDD = 3.6V 0.25 0.20 VDD = 2.5V 0.1 0.05 VDD=2.5V VDD=3.6V VDD=5.0V 0.15 VDD=2.5V VDD=3.6V VDD=5.0V VDD = 2.5V 0.10 0.05 0 0.00 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 Output Power [W] 0.9 1 1.1 1.2 0 0.2 0.4 0.6 1.4 1.6 1.8 2 Fig.10 Figure.6 Figure.5 Fig.9 Supply Current vs Power Supply RL=No load, No signal 5.0 5.0 4.5 4.5 4.0 4.0 3.5 3.5 3.0 3.0 ISDN [μA] ICC [mA] 0.8 1 1.2 Output Power [W] 2.5 2.0 2.5 2.0 1.5 1.5 1.0 1.0 0.5 0.5 0.0 Shutdown Current vs Power Supply RL=No load, No signal 0.0 0 1 2 3 VDD [V] 4 5 6 0 www.rohm.com 2 3 VDD [V] 4 5 6 Fig.12 Figure.8 Fig.11 Figure.7 © 2010 ROHM Co., Ltd. All rights reserved. 1 14/19 2010.09 - Rev.A Technical Note BD5468GUL Evaluation data - Typical Characteristics (2/4) ●Evaluation data – Typical characteristics (2/4) Output power vs Load Resistance THD+N=1%, f=1kHz, 400Hz-30kHz BPF 2.0 VDD=2.5V VDD=3.6V VDD=5.0V 1.8 Output Power [W] 1.6 1.4 VDD = 5.0V 1.2 1.0 0.8 0.6 VDD = 3.6V VDD = 2.5V 0.4 0.2 0.0 4 8 12 16 20 RL[Ω] 24 28 32 Fig.13 Figure.9 Output Power vs Power Supply RL=4Ω, f=1kHz, 400Hz-30kHz BPF 1.2 2.5 1.0 2.0 Output Power [W] Output Power [W] Output Power vs Power Supply RL=8Ω, f=1kHz, 400Hz-30kHz BPF 0.8 0.6 0.4 1.5 1.0 THD+N≦1% THD+N≦1% 0.2 0.5 0.0 2 2.5 3 3.5 4 VDD[V] 4.5 5 5.5 0.0 6 2 2.5 3 3.5 Fig.14 Figure.10 100 4 VDD[V] 4.5 5 5.5 6 Fig.15 Figure.11 Total Harmonic Distortion + Noise vs Output Power RL=4Ω, f=1kHz, 400Hz-30kHz BPF Total Harmonic Distortion + Noise vs Output Power RL=8Ω, f=1kHz, 400Hz-30kHz BPF 100 VDD = 2.5V VDD = 3.6V VDD = 5.0V VDD = 2.5V VDD = 3.6V VDD = 5.0V VDD = 3.6V VDD = 3.6V VDD = 2.5V 10 VDD = 2.5V THD+N [%] THD+N [%] 10 VDD = 5.0V 1 VDD = 5.0V 1 0.1 0.01 0.1 1 10 0.1 0.01 0.1 Output Power [W] Fig.16 Figure.12 1 10 Fig.17 Figure.13 Total Harmonic Distortion + Noise vs Frequency VDD=3.6V RL=8Ω, 400Hz-30kHzBPF Total Harmonic Distortion + Noise vs Frequency VDD=5.0V RL=8Ω, 400Hz-30kHz BPF 10 Output Power [W] 10 Po=25mW Po=100mW Po=250mW Po=25mW Po=100mW Po=250mW Po = 100mW 1 Po = 100mW THD+N [%] THD+N [%] 1 Po = 25mW Po = 250mW 0.1 Po = 25mW Po = 250mW 0.1 0.01 0.01 10 100 1k Frequency [Hz] 10k 100k Fig.18 Figure.14 www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 10 100 1k Frequency [Hz] 10k 100k Fig.19 Figure.15 15/19 2010.09 - Rev.A Technical Note BD5468GUL Evaluation - Typical Characteristics (3/4) ●Evaluation data –data Typical characteristics (3/4) Total Harmonic Distortion + Noise vs Frequency VDD=2.5V, RL=8Ω, 400Hz-30kHz BPF Total Harmonic Distortion + Noise vs Frequency RL=8Ω, Po=125mW, 400Hz-30kHz BPF 10 10 Po=25mW Po=100mW Po=150mW Po = 100mW 1 THD+N [%] 1 THD+N [%] VDD=2.5V VDD=3.6V VDD=5.0V Po = 25mW Po = 150mW 0.1 VDD = 3.6V 0.1 VDD = 5.0V VDD = 2.5V 0.01 0.01 10 100 1k Frequency [Hz] 10k 10 100k 100 1k Frequency [Hz] Fig.20 Figure.16 10 10 Gain [dB] 12 Gain [dB] 12 8 6 VDD = 3.6V VDD=2.5V VDD=3.6V VDD=5.0V 2 Gain_vs_Frequency RL=4Ω, Vin=0.5Vpp, 400Hz-30kHz BPF 14 VDD = 5.0V 4 100k Fig.21 Figure.17 Gain vs Frequency RL=8Ω, Vin=0.5Vpp, 400Hz-30kHz BPF 14 10k VDD = 5.0V 8 6 4 VDD=2.5V VDD=3.6V VDD=5.0V 2 VDD = 2.5V 0 VDD = 3.6V VDD = 2.5V 0 10 100 1k Frequency [Hz] 10k 100k 10 100 1k Frequency [Hz] Fig.22 Figure.18 10k 100k Fig.23 Figure.19 Output Power vs Input Level @ sweep up RL=8Ω, f=1kHz, 400Hz-30kHz BPF Output Power vs Input Level @ sweep up RL=4Ω,f=1kHz, 400Hz-30kHz BPF 10 10 VDD = 5.0V VDD = 5.0V 1 Output Power [W] Output Power [W] 1 VDD = 3.6V 100m VDD = 2.5V 10m VDD = 2.5V VDD = 3.6V VDD = 5.0V 1m -30 -25 -20 -15 -10 Vin [dBV] -5 0 VDD = 3.6V 100m 10m 1m -30 5 VDD = 2.5V VDD = 2.5V VDD = 3.6V VDD = 5.0V -25 -20 -15 Fig.24 Figure.20 -10 -5 Vin [dBV] 0 5 10 15 Fig.25 Figure.21 Total Harmonic Distortion + Noise vs Input Level @ sweep up RL=8Ω,f=1kHz, 400Hz-30kHz BPF Total Harmonic Distortion + Noise vs Input Level @ sweep up RL=4Ω,f=1kHz, 400Hz-30kHz BPF 100 100 VDD = 2.5V VDD = 3.6V VDD = 5.0V VDD = 2.5V VDD = 3.6V VDD = 5.0V VDD = 3.6V VDD = 2.5V 1 10 VDD = 2.5V THD+N [%] THD+N [%] 10 1 VDD = 3.6V VDD = 5.0V VDD = 5.0V 0.1 -30 -25 -20 -15 -10 Vin [dBV] -5 0 0.1 -30 5 Fig.26 Figure.22 www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. -25 -20 -15 -10 -5 Vin [dBV] 0 5 10 15 Fig.27 Figure.23 16/19 2010.09 - Rev.A Technical Note BD5468GUL ●Evaluation data – Typical (4/4) (4/4) Evaluation data -characteristics Typical Characteristics ALC Limit Operation Waveform f=1kHz ALC Release Operation Waveform f=1kHz 2V / Div. 2V / Div. INPUT INPUT OUTPUT -1 OUTPUT 0 1 2 3 4 Time [msec] 5 6 -10 7 0 10 20 Fig.28 Figure.24 30 40 Time [msec] 50 60 70 1 1.2 1.4 Fig.29 Figure.25 Waveform during Start-up Waveform during Shutdown 1V / Div. 1V / Div. INPUT INPUT OUTPUT Ton ( Wake-up Time) OUTPUT -0.2 0 0.2 0.4 0.6 0.8 Time [msec] 1 1.2 -0.2 1.4 Figure.26 Fig.30 www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 0 0.2 0.4 0.6 0.8 Time [msec] Figure.27 Fig.31 17/19 2010.09 - Rev.A Technical Note BD5468GUL ●Notes for use (1) The numerical value and the data of the mention are a design representative value and are not the one which guarantees the value. (2) It is convinced that it should recommend application circuit example but in case of use, we request the confirmation of the characteristic more sufficiently. When changing an external part fixed number and becoming use, it considers sprawl of the external part and our company's LSI including the transition characteristic in addition to the stillness characteristic and so on, see and fix an enough margin. (3) Absolute maximum ratings This IC may be damaged if the absolute maximum ratings for the applied voltage, temperature range, or other parameters are exceeded. Therefore, avoid using a voltage or temperature that exceeds the absolute maximum ratings. If it is possible that absolute maximum ratings will be exceeded, use fuses or other physical safety measures and determine ways to avoid exceeding the IC's absolute maximum ratings. (4) GND terminal’s potential Try to set the minimum voltage for GND terminal’s potential, regardless of the operation mode. (5) Shorting between pins and mounting errors When mounting the IC chip on a board, be very careful to set the chip's orientation and position precisely. When the power is turned on, the IC may be damaged if it is not mounted correctly. The IC may also be damaged if a short occurs (due to a foreign object, etc.) between two pins, between a pin and the power supply, or between a pin and the GND. (6) Operation in strong magnetic fields Note with caution that operation faults may occur when this IC operates in a strong magnetic field. (7) Thermal design Ensure sufficient margins to the thermal design by taking in to account the allowable power dissipation during actual use modes, because this IC is power amplifier. When excessive signal inputs which the heat dissipation is insufficient condition, it is possible that thermal shutdown circuit is active. (8) Thermal shutdown circuit This product is provided with a built-in thermal shutdown circuit. When the thermal shutdown circuit operates, the output transistors are placed under open status. The thermal shutdown circuit is primarily intended to shut down the IC avoiding thermal runaway under abnormal conditions with a chip temperature exceeding Tjmax=+150℃, and is not intended to protect and secure an electrical appliance. (9) Load of the output terminal This IC corresponds to dynamic speaker load, and doesn't correspond to the load except for dynamic speakers. When using speaker load 8Ω or less (especially 4Ω), there will be a risk of generating distortion at the speaker output wave form during ALC limit operation. (10) The short protection of the output terminal This IC is built in the short protection for a protection of output transistors. When the short protection is operated, output terminal become Hi-Z condition and is stopped with latch. Once output is stopped with latch, output does not recover automatically by canceling the short-circuiting condition. The condition of stopping with latch is cancelled, when power supply or mute signal is turned off and turned on again. (11) Operation Range The rated operating power supply voltage range (VDD=+2.5V～+5.5V) and the rated operating temperature range (Ta=-40℃～+85℃) are the range by which basic circuit functions is operated. Characteristics and rated output power are not guaranteed in all power supply voltage ranges or temperature ranges. (12) Electrical Characteristics Every audio characteristics list of the limit output power, total harmonic distortion, maximum gain, ALC limit level, ALC release level etc. shows the typical characteristics of the device, highly dependent to the board lay-out, parts to be used, power supply. The value when the device and each component are directly mounted to the board of Rohm. (13) Power Supply Since the Power Supply Pin for signal (VDD) and power supply for Power (PVDD) is SHORT at internal, short the board pattern, then use a single power supply. Also, the power supply line of class-D speaker amplifier flows big peak energy. It will influence the audio characteristics based on the capacity value of power supply decoupling capacitor, arrangement. For the power supply decoupling capacitor, please arrange appropriately the low capacity (1μF or more) of ESR (equivalent series resistor) directly near to IC Pin. (14) ALC (Automatic Level Control) Function The ALC automatically adjusts the audio output level, and a function that prevents the over output to the speaker. When ALC function is working, gain switches at zero-cross point of audio output normally. If the time that audio output reaches to zero-cross point is long, gain switches at about 1msec later (attack time), at about 25msec later (release time). So, attack time and release time will change at audio input frequency. ALC parameter is fixed. The system does not correspond to noise of impulse.Also, ALC limit control will become a power supply tracking type, limit output power is dependent to power supply voltage. The ALC characteristics of limit output power, ALC limit and release limit will be influenced by the shaking so please be careful. www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 18/19 2010.09 - Rev.A Technical Note BD5468GUL ●Ordering part number B D 5 Part No. 4 6 8 Part No. G U L - Package GUL :VCSP50L1 E 2 Packaging and forming specification E2: Embossed tape and reel VCSP50L1(BD5468GUL) <Tape and Reel information> 1.70±0.05 Tape Embossed carrier tape Quantity 3000pcs Direction of feed 0.55MAX 0.1±0.05 1.70±0.05 1PIN MARK E2 The direction is the 1pin of product is at the upper left when you hold ( reel on the left hand and you pull out the tape on the right hand ) (φ0.15)INDEX POST A C B B A 1 0.35±0.05 2 P=0.5×2 0.06 S 9-φ0.25±0.05 0.05 A B 0.35±0.05 S 3 1pin P=0.5×2 (Unit : mm) www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. Reel 19/19 Direction of feed ∗ Order quantity needs to be multiple of the minimum quantity. 2010.09 - Rev.A Notice Notes No copying or reproduction of this document, in part or in whole, is permitted without the consent of ROHM Co.,Ltd. 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