Small-sized Class-D Speaker Amplifiers
Analog Input Monaural Class-D Speaker Amplifier
BD5466GUL
No.10101EAT06
●Description BD5466GUL 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 BD5465/67/68GUL (ALC Function, Gain Fixed Goods) Pin Compatible Specs 5) Maximum Gain: 18dB(Typ.) [during ALC operation, 18～3dB@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 VDDmax PVDDmax Pd Tstg VSDNB VIN
Ratings 7.0 690※ -55 ～ +150 -0.3～VDD+0.3 -0.3～VDD+0.3
Unit V mW ℃ V 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 Topr VDD PVDD VIC Range -40 ～ +85 +2.5 ～ +5.5 +0.5 ～ VDD-0.8 Unit ℃ V V
◎ This product is not designed for protection against radioactive rays.
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1/19
2010.09 - Rev.A
BD5466GUL
●Electrical Characteristic (Ta=+25℃, VDD=+3.6V, Unless specified otherwise) Parameter ＜All Device＞ Circuit current (no signal) Circuit current (shutdown) ＜Audio Feature＞ Limit output power Total harmonic distortion Maximum Gain ALC Limit level ALC Release level Switching frequency Start-up time Audio input resistance ＜Control Terminal＞ SDNB terminal Threshold voltage H L H L VSDNBH VSDNBL ISDBNH ISDNBL 1.4 0 12 -5 ― ― 24 ― VDD 0.4 36 5 V V μA μA IC Active IC Shutdown VSDNB =3.6V VSDNB =0V PO THD+N GMAX VLIM VREL fOSC TON Ri 0.035 2 ×VDD ― 17 1.5 ×VDD 1.19 ×VDD 150 0.73 22 0.044 2 ×VDD 2 0.2 18 1.68 ×VDD 1.34 ×VDD 250 1.02 33.5 0.055 ×VDD2 1 19 1.89 ×VDD 1.5 ×VDD 350 1.71 45 W % dB Vpp Vpp kHz msec kΩ Gain=18dB ICC ISDN ― ― 3 0.01 6 2 mA μA Symbol Limits Min. Typ. Max. Unit
Technical Note
Conditions
IC Active, No Load VSDNB =VDD IC Shutdown VSDNB =GND BTL, f=1kHz, RL=8Ω THD+N≦1% , *1 BTL, fin=1kHz, RL=8Ω PO =0.3W , *1 BTL, *1 BTL, *1 BTL, *1
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 SDNB H L ●ALC Parameter
Conditions IC operation (active) IC stop (shutdown)
ALC Parameter Attack Time (Typ.) Release Time(Typ.) 4ms/1dB @ fin=100～10kHz Gain Switch Step (Typ.) ±1dB ～1ms/1dB @ fin=100Hz ～0.5ms/1dB @ fin=1kHz ～0.05ms/1dB @ fin=10kHz
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.
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2/19
2010.09 - Rev.A
BD5466GUL
●Measurement Circuit Diagram ■In case LC filter is not used
+Battery
Technical Note
C3 10uF VDD B1 B2 PVDD
Shutdown Signal H : IC Active L : IC Shutdown
SDNB C2
150 k (Typ.)
Shutdown Control
BIAS
OSC
ALC
0. 1uF IN + A1 C2
Ri
Rf HBridge
OUT + C3
PWM
0. 1uF IN C1 C1
OUT A3
Ri
Rf
BTL GND A2 B3 PGND LPF AP AUX 0025 -
Measument Instrument
Audio Precision (AP)
■In case LC filter is used
+Battery
C3 10uF VDD B1 B2 PVDD
Shutdown Signal H: IC Active L : IC Shutdown
SDNB C2
150k (Typ.)
Shutdown Control
BIAS
OSC ALC
0. 1uF C2 IN + A1
Ri
Rf HBridge
22uH C3 1 uF 1uF A3 22uH BTL GND A2 B3 PGND Audio Precision (AP )
PWM
0. 1uF C1 IN C1
Ri
Rf
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:
fc 1 2 LC 1 2 22 H 1F 34kHz
For Inductor L, please use huge current type.
(Reference)TDK : SLF12575T-220M4R0
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3/19
2010.09 - Rev.A
BD5466GUL
●External Dimension Diagram Top View Bottom View
Technical Note
5466
LOT No.
9pin WL-CSP(VCSP50L1) [ 1.7×1.7×0.55mm Max, 0.5mm Pitch ]
(Unit : mm)
Side View ●Block Diagram
VDD B1 B2 PVDD
●Pin Arrangement (Bottom View)
SDNB C2 150k (Typ.) OSC Shutdown Control BIAS
C1
IN-
C2
SDNB
C3
OUT+
B1
ALC IN+ A1 PWM INC1 Ri Rf HBridge OUTA3 Ri Rf OUT+ C3
B2
PVDD
B3
PGND
Index Post
VDD
A1
IN+
A2
GND
A3
OUT-
GND A2
B3 PGND
●Pin Explanation Pin No. A1 A2 A3 B1 B2 B3 C1 C2 C3 Pin Name IN+ GND OUTVDD PVDD PGND INSDNB OUT+ Explanation Audio differential input + terminal GND terminal (signal) Class-D BTL output - terminal VDD terminal (signal) VDD terminal (power) GND terminal (power) Audio differential input - terminal Shutdown control terminal Class-D BTL output + terminal
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4/19
2010.09 - Rev.A
BD5466GUL
●Application circuit example
Technical Note
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 H: IC Active L: IC Shutdown
SDNB C2 VDD B1 B2 PVDD
Power VDD
150k (Typ.)
Shutdown Control
BIAS
OSC ALC Audio Input + Differential Input
0 .1 uF IN+ A1
Class-D BTL Output
OUT + C3
Ri
Rf PWM HBridge
Audio Input-
0 .1 uF
INC1
OUT A3
Ri
Rf Signal GND
GND A2 B3 PGND
Audio Differential Input
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 H: IC Active L: IC Shutdown
SDNB C2 VDD
B1
B2
Power VDD
PVDD
150k (Typ.)
Shutdown Control
BIAS
OSC ALC
IN+
Audio Input + Differential Input
A1
Ri
Rf PWM HBridge
OUT + C3
Class-D BTL Output
IN-
OUT A3
Audio Input -
C1
Ri
Rf
GND A2 B3 PGND
Audio Differential Input
Signal GND
Power GND
Fig2. Differential Input(Without Input Coupling Capacitor)
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5/19
2010.09 - Rev.A
BD5466GUL
Technical Note
+Battery
Singleness power supply (+2.5～+5.5V)
C3 10uF
Signal VDD Shutdown Control Shutdown Signal H: IC Active L: IC Shutdown
SDNB C2 VDD B1 B2 PVDD
Power VDD
150k (Typ)
Shutdown Control
BIAS
OSC Audio Single End Input
Audio Input 0 .1uF IN + A1
ALC Ri Rf PWM HBridge
OUT A3 OUT + C3
Class-D BTL Output
0.1uF
IN C1
Ri
Rf
GND A2 B3 PGND
Signal GND
Power GND
Fig3. Single end input (during IN+ input)
+Battery
Singleness power supply (+2.5～+5.5V)
C3 10uF
Signal VDD
VDD B1 B2 PVDD
Power VDD
Shutdown Control Shutdown Signal H: IC Active L: IC Shutdown
SDNB C2
150k (Typ.)
Shutdown Control
BIAS
OSC ALC
0 . 1 uF IN + A1
Class-D BTL Output
OUT + C3
Ri
Rf PWM HBridge
Audio Input
0 . 1 uF
IN C1
OUT A3
Ri
Rf
GND A2 B3 PGND
Audio Single End Input
Signal GND
Power GND
Fig4. Single end input (during IN- Input)
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6/19
2010.09 - Rev.A
BD5466GUL
Technical Note
●About the difference of differential input and single end input ・BD5466GUL uses full differential amplifier. BD5466GUL 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- ) 0V C1 INOpposite phase (OUT+ - OUT- ) C3 OUT+
Audio Input
2) Single end input (during IN+input )
0V IN+ A1
Opposite phase OUTA3
Audio Input
Same p hase
(IN+ - IN- ) 0V ー IN-
(OUT+ - OUT- )
C1 ー
C3 OUT+
3) Single end input (during IN-input )
0V ー IN+ A1 ー OUTA3
(IN+ - IN- )
e e phas Opposit
(OUT+ - OUT- )
Audio Input
0V C1 INOpposite phase C3 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 Audio Input ⇒ output (OUT+ - OUT-) IN+ Input Same phase IN- Input Opposite phase
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7/19
2010.09 - Rev.A
BD5466GUL
○Gain calculation 【Differential Input】
+Battery
Technical Note
【single end input】
+ Battery
Cs
Cs
VDD
B1
B2 PVDD
VDD
B1
B2 PVDD
Shutdown Signal H: IC Active L: IC Shutdown
SDNB C2
150 k (Typ.)
Shutdown Control
Shutdown Signal BIAS H: IC Active L: IC Shutdown OSC
SDNB C2
150 k (Typ .)
Shutdown Control
BIAS
OSC ALC
OUT+ C3
ALC < Audio Source > 0.1uF
Vins Ci 0.1uF Ci IN+ A1 VIN (=2Vins ) INC1
Ri
Rf PWM HBridge
< Audio Source> 0.1uF
Vins Ci 0.1uF Ci
IN+ A1 VIN (=Vins ) INC1
Ri
Rf PWM HBridge
OUT+ C3
Vins
OUTA3
OUTA3
Ri
Rf
GND A2 B 3 PGND
Ri
Rf
GND A2 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 IC Audio Source Formula② Differential Output Single End Output
Formula① 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 | =+18～+3 (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 reference that includes ALC operation, gain calculation formula will become: Gain = 20×log | VOUT / Vins | = 20×log | 2×VOUT / VIN | = +25～+9 (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 | = +18～+3 (Typ.) [dB] ・・・ Formula①
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8/19
2010.09 - Rev.A
BD5466GUL
●Audio Input Pin External LPF connection example
Technical Note
■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 C2 150k (Typ.) ALC Input Impedance Front IC Ro RLPF Ci CLPF RLPF Pop sound → countermeasure CLPF Ci INC1 Ri Rf GND A2 B3 PGND IN+ A1 Ri Rf HBridge A3 OUTOUT+ C3 PWM Speaker OSC Shutdown Control
BIAS
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9/19
2010.09 - Rev.A
BD5466GUL
2) Differential Input
+Battery
Technical Note
Cs VDD B1 B2 PVDD Shutdown Signal H: IC Active L: IC Shutdown SDNB C2 150k (Typ.) Input Impedance Front IC Ro RLPF CLPF Ro RLPF CLPF Ci INC1 Ri Rf GND A2 B3 PGND LPF Ci IN+ A1 PWM HBridge A3 OUTRi Rf OUT+ C3 Speaker ALC OSC Shutdown Control BIAS
■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 BD5466GUL 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=33.5kΩ(Typ.), Rf=266.5kΩ(Typ.)@Gain=18dB #2. Ri=37kΩ(Typ.), Rf=263kΩ(Typ.)@Gain=17dB #3. Ri=41kΩ(Typ.), Rf=259kΩ(Typ.)@Gain=16dB ↓ #15. Ri=116kΩ(Typ.), Rf=184kΩ(Typ.)@Gain=4dB #16. Ri=124kΩ(Typ.), Rf=176kΩ(Typ.)@Gain=3dB Also with the driver ability of previous IC step, after checking, constant setting of external LPF and Resistor RLPF.
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10/19
2010.09 - Rev.A
BD5466GUL
●Evaluation Board Circuit Diagram Connect to GND
VDD C3 10uF
Technical Note
Connect to Power Supply (VDD=+2.5～5.5V)
VDD
VDD B1
B2 PVDD
SDNB
Shutdown Signal H： IC Active L： IC Shutdown
C2 150k (Typ.)
Shutdown Control
BIAS
OSC
Audio Input
Audio Input+ 0.1uF C2 Audio InputIN+ A1 Ri Rf
ALC OUT+ C3 PWM HBridge OUTRi Rf A3
Differential Input
0.1uF C1
INC1
B D5466GUL
GND
GND A2
B3 PGND
Connect to input signal 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. 2 1 1 1 1 Item C1, C2 C3 S1 U1 PCB1 Description Capacitor, 0.1μF Capacitor, 10μF Slide Switch IC, BD5466GUL, Mono Class-D Audio Amplifier Printed-Circuit Board, BD5466GUL EVM SMD Size 0603 A (3216) 4mm X 10.2mm 1.7mm X 1.7mm WLCSP Package ― Manufacturer/ Part Number Murata GRM188R71C104KA01D ROHM TCFGA1A106M8R NKK SS-12SDP2 ROHM BD5466GUL ―
●About the external part ①Input coupling capacitor (C1, C2) Input coupling capacitor is 0.1μF. Input impedance during maximum gain 18dB is 33.5kΩ (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.
fc
1 [Hz] 2π Ri C1
In case of Ri=33.5kΩ, C1(=C2)=0.1μF, cut-off frequency is about 48Hz ②Power 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.
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11/19
2010.09 - Rev.A
BD5466GUL
●Evaluation Board PCB Layer TOP Layer Silk Pattern
Technical Note
B D5466GUL
TOP Layer
Bottom Layer
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12/19
2010.09 - Rev.A
BD5466GUL
●About IC Thermal Design
Technical Note
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
1.5 Power Dissipation Pd(W)
1.0 0.69W
0.5
θja =
181.8℃/W
0.0 0 25 50 75
85
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.
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13/19
2010.09 - Rev.A
BD5466GUL
●Evaluation data – Typical characteristics (1/4)
90 80
VDD = 5.0V
Technical Note
Efficiency - Output power f=1kHz, RL=8Ω+33uH Efficiency vs Output power f=1kHz, RL=4Ω+33uH
Evaluation data - Ty pical Characteristics (1/4)
80 70
VDD = 3.6V
70 Efficiency [%] 60 50 40 30 20 10 0 0 0.1
VDD = 3.6V
VDD = 5.0V
60 Efficiency [%]
VDD = 2.5V
VDD = 2.5V
50 40 30 20 10
VDD=2.5V VDD=3.6V VDD=5.0V
VDD=2.5V VDD=3.6V VDD=5.0V
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 0.2 0.4 0.6 0.8 1 1.2 Output Power [W] 1.4 1.6 1.8 2
Fig.5 Figure.1
Supply Current vs Output power f=1kHz, RL=8Ω+33uH
450 400
250
VDD = 5.0V
Fig.6 Figure.2
Supply Current vs Output power f=1kHz, RL=4Ω+33uH
300
350
VDD = 5.0V
200 Icc [mA] 150
VDD = 2.5V
300 Icc [mA]
VDD = 3.6V
VDD = 3.6V VDD = 2.5V
250 200 150 100 50 0
100 50 0 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 Output Power [W] 0.8 0.9
VDD=2.5V VDD=3.6V VDD=5.0V
VDD=2.5V VDD=3.6V VDD=5.0V
1
1.1
1.2
0
0.2
0.4
0.6
0.8 1 1.2 1.4 Output Power [W]
1.6
1.8
2
Fig.7 Figure.3
Power dissipation vs Output power f=1kHz, RL=8Ω+33uH
Fig.8 Figure.4
Power dissipation vs Output power f=1kHz, RL=4Ω+33uH
0.45 0.40 0.35
VDD = 5.0V
0.3 0.25 0.2 Pd [W] 0.15 0.1
VDD = 2.5V
VDD = 5.0V
0.30 Pd [W] 0.25 0.20
VDD = 2.5V
VDD = 3.6V
VDD = 3.6V
0.05 0 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 Output Power [W] 0.9
VDD=2.5V VDD=3.6V VDD=5.0V
0.15 0.10 0.05 0.00
1.2
VDD=2.5V VDD=3.6V VDD=5.0V
1
1.1
0
0.2
0.4
0.6
0.8 1 1.2 Output Power [W]
1.4
1.6
1.8
2
Figure.5 Fig.9 Supply Current vs Power Supply RL=No load, No signal
5.0 4.5 4.0 3.5
Fig.10 Figure.6
Shutdown Current vs Power Supply RL=No load, No signal
5.0 4.5 4.0 3.5 ISDN [μA]
0 1 2 3 VDD [V] 4 5 6
ICC [mA]
3.0 2.5 2.0 1.5 1.0 0.5 0.0
3.0 2.5 2.0 1.5 1.0 0.5 0.0 0 1 2 3 VDD [V] 4 5 6
Fig.11 Figure.7
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Fig.12 Figure.8
14/19
2010.09 - Rev.A
BD5466GUL
●Evaluation data – Typical characteristics (2/4)
2.0 1.8 1.6 Output Power [W] 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0.0 4 8 12 16 20 RL[Ω] 24 28 32
VDD = 3.6V VDD = 2.5V VDD = 5.0V
Technical Note
Output power vs Load Resistance THD+N=1%, f=1kHz, 400Hz-30kHz BPF
VDD=2.5V VDD=3.6V VDD=5.0V
Evaluation data - Ty pical Characteristics (2/4)
Figure.9 Fig.13 Output Power vs Power Supply RL=8Ω, f=1kHz, 400Hz-30kHz BPF
1.2 1.0 Output Power [W] 0.8 0.6 0.4 0.2 0.0 2 2.5 3 3.5 4 VDD[V] 4.5 5 5.5 6 THD+N≦1% Output Power [W] 2.5
Output Power vs Power Supply RL=4Ω, f=1kHz, 400Hz-30kHz BPF
2.0
1.5
1.0 THD+N≦1% 0.5
0.0 2 2.5 3 3.5 4 VDD[V] 4.5 5 5.5 6
Fig.14 Figure.10
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 = 3.6V
Fig.15 Figure.11
Total Harmonic Distortion + Noise vs Output Power RL=4Ω, f=1kHz, 400Hz-30kHz BPF
VDD = 2.5V VDD = 3.6V VDD = 5.0V
VDD = 2.5V
100
VDD = 3.6V
10 THD+N [%] THD+N [%]
10
VDD = 2.5V
VDD = 5.0V
1
1
VDD = 5.0V
0.1 0.01
0.1 Output Power [W]
1
10
0.1 0.01
0.1
Output Power [W]
1
10
Fig.16 Figure.12
Total Harmonic Distortion + Noise vs Frequency VDD=5.0V RL=8Ω, 400Hz-30kHz BPF
10 Po=25mW Po=100mW Po=250mW 1 THD+N [%]
Po = 25mW
Fig.17 Figure.13
Total Harmonic Distortion + Noise vs Frequency VDD=3.6V RL=8Ω, 400Hz-30kHzBPF
Po=25mW Po=100mW Po=250mW 1 THD+N [%]
10
Po = 100mW
Po = 100mW
Po = 25mW
Po = 250mW
0.1
0.1
Po = 250mW
0.01 10 100 1k Frequency [Hz] 10k 100k
0.01 10 100 1k Frequency [Hz] 10k 100k
Fig.18 Figure.14
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Fig.19 Figure.15
15/19
2010.09 - Rev.A
BD5466GUL
Evaluation data - Ty pical Characteristics (3/4) ●Evaluation data – Typical characteristics (3/4)
Total Harmonic Distortion + Noise vs Frequency VDD=2.5V, RL=8Ω, 400Hz-30kHz BPF
10 Po=25mW Po=100mW Po=150mW 1 THD+N [%]
Po = 25mW Po = 150mW
Technical Note
Total Harmonic Distortion + Noise vs Frequency RL=8Ω, Po=125mW, 400Hz-30kHz BPF
10 VDD=2.5V VDD=3.6V VDD=5.0V 1 THD+N [%]
VDD = 3.6V
Po = 100mW
0.1
0.1
VDD = 5.0V
VDD = 2.5V
0.01 10 100 1k Frequency [Hz] 10k 100k
0.01 10 100 1k Frequency [Hz] 10k 100k
Fig.20 Figure.16
Gain vs Frequency RL=8Ω, Vin=0.25Vpp, 400Hz-30kHz BPF
20 18 16 14 Gain [dB] 12 10 8 6 4 2 0 10 100 1k Frequency [Hz] 10k 100k
VDD = 2.5V VDD = 3.6V VDD = 5.0V
Figure.17 Fig.21 Gain vs Frequency RL=4Ω, Vin=0.25Vpp, 400Hz-30kHz BPF
20 18 16 14 Gain [dB] 12 10 8 6 4 2 0 10 100 1k Frequency [Hz] 10k 100k
VDD = 2.5V VDD = 3.6V VDD = 5.0V
VDD=2.5V VDD=3.6V VDD=5.0V
VDD=2.5V VDD=3.6V VDD=5.0V
Fig.22 Figure.18
Output Power vs Input Level @ sweep up RL=8Ω, f=1kHz, 400Hz-30kHz BPF
10
VDD = 5.0V
Fig.23 Figure.19
Output Power vs Input Level @ sweep up RL=4Ω, f=1kHz, 400Hz-30kHz BPF
10
VDD = 5.0V
1 Output Power [W] Output Power [W]
1
100m
VDD = 2.5V
VDD = 3.6V
100m
VDD = 2.5V
VDD = 3.6V
10m
VDD = 2.5V VDD = 3.6V VDD = 5.0V -25 -20 -15 -10 Vin [dBV] -5 0 5
10m
VDD = 2.5V VDD = 3.6V VDD = 5.0V -25 -20 -15 -10 Vin [dBV] -5 0 5
1m -30
1m -30
Fig.24 Figure.20
Total Harmonic Distortion + Noise vs Input Level @ sweep up RL=8Ω,f=1kHz, 400Hz-30kHz BPF 100 VDD = 2.5V VDD = 3.6V VDD = 5.0V 100
Fig.25 Figure.21
Total Harmonic Distortion + Noise vs Input Level @ sweep up RL=4Ω,f=1kHz, 400Hz-30kHz BPF VDD = 2.5V VDD = 3.6V VDD = 5.0V
VDD = 3.6V
10 THD+N [%]
10 THD+N [%]
VDD = 2.5V
1
VDD = 2.5V
1 0.1
VDD = 3.6V VDD = 5.0V
0.01 -30
-25
-20
-15 -10 Vin [dBV]
-5
0
5
0.1 -30
VDD = 5.0V
-25
-20
-15 -10 Vin [dBV]
-5
0
5
Fig.26 Figure.22
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Fig.27 Figure.23
16/19
2010.09 - Rev.A
BD5466GUL
●Evaluation data – Typical characteristics (4/4) Evaluation data - Ty pical Characteristics (4/4)
ALC Limit Operation Waveform f=1kHz
2V / Div. 2V / Div.
Technical Note
ALC Release Operation Waveform f=1kHz
INPUT INPUT
OUTPUT
OUTPUT
-1
0
1
2
3 4 Time [msec]
5
6
7
-10
0
10
20
30 40 Time [msec]
50
60
70
Fig.28 Figure.24
Waveform during Start-up
1V / Div. 1V / Div. INPUT INPUT
Fig.29 Figure.25
Waveform during Shutdown
OUTPUT
Ton ( Wake-up Time) OUTPUT
-0.2
0
0.2
0.4
0.6 0.8 Time [msec]
1
1.2
1.4
-0.2
0
0.2
0.4
0.6 0.8 Time [msec]
1
1.2
1.4
Fig.30 Figure.26
Figure.27 Fig.31
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17/19
2010.09 - Rev.A
BD5466GUL
Technical Note
●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.
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18/19
2010.09 - Rev.A
BD5466GUL
●Ordering part number
Technical Note
B
D
5
Part No.
4
6
6
G
U
L
-
E
2
Part No.
Package GUL: VCSP50L1
Packaging and forming specification E2: Embossed tape and reel
VCSP50L1(BD5466GUL)
1PIN MARK
1.70±0.05
Tape Quantity
0.55MAX 0.1±0.05
Embossed carrier tape 3000pcs E2
The direction is the 1pin of product is at the upper left when you hold
1.70±0.05
Direction of feed
S
( reel on the left hand and you pull out the tape on the right hand
)
0.06 S 9-φ0.25±0.05 0.05 A B (φ0.15)INDEX POST
C B A 1
A B
0.35±0.05
P=0.5×2
2
3
P=0.5×2
0.35±0.05
1pin
Direction of feed
(Unit : mm)
Reel
∗ Order quantity needs to be multiple of the minimum quantity.
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19/19
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. The content specified herein is subject to change for improvement without notice. The content specified herein is for the purpose of introducing ROHM's products (hereinafter "Products"). If you wish to use any such Product, please be sure to refer to the specifications, which can be obtained from ROHM upon request. Examples of application circuits, circuit constants and any other information contained herein illustrate the standard usage and operations of the Products. The peripheral conditions must be taken into account when designing circuits for mass production. Great care was taken in ensuring the accuracy of the information specified in this document. However, should you incur any damage arising from any inaccuracy or misprint of such information, ROHM shall bear no responsibility for such damage. The technical information specified herein is intended only to show the typical functions of and examples of application circuits for the Products. ROHM does not grant you, explicitly or implicitly, any license to use or exercise intellectual property or other rights held by ROHM and other parties. ROHM shall bear no responsibility whatsoever for any dispute arising from the use of such technical information. The Products specified in this document are intended to be used with general-use electronic equipment or devices (such as audio visual equipment, office-automation equipment, communication devices, electronic appliances and amusement devices). The Products specified in this document are not designed to be radiation tolerant. While ROHM always makes efforts to enhance the quality and reliability of its Products, a Product may fail or malfunction for a variety of reasons. Please be sure to implement in your equipment using the Products safety measures to guard against the possibility of physical injury, fire or any other damage caused in the event of the failure of any Product, such as derating, redundancy, fire control and fail-safe designs. ROHM shall bear no responsibility whatsoever for your use of any Product outside of the prescribed scope or not in accordance with the instruction manual. The Products are not designed or manufactured to be used with any equipment, device or system which requires an extremely high level of reliability the failure or malfunction of which may result in a direct threat to human life or create a risk of human injury (such as a medical instrument, transportation equipment, aerospace machinery, nuclear-reactor controller, fuelcontroller or other safety device). ROHM shall bear no responsibility in any way for use of any of the Products for the above special purposes. If a Product is intended to be used for any such special purpose, please contact a ROHM sales representative before purchasing. If you intend to export or ship overseas any Product or technology specified herein that may be controlled under the Foreign Exchange and the Foreign Trade Law, you will be required to obtain a license or permit under the Law.
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R1010A
