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產(chǎn)品型號(hào)BA5415A的概述

BA5415A芯片概述 BA5415A是一款高性能的音頻功率放大器，廣泛應(yīng)用于便攜式音頻設(shè)備，如收音機(jī)、便攜式音響和其他音頻應(yīng)用中。其設(shè)計(jì)旨在實(shí)現(xiàn)較高的電流輸出和增強(qiáng)的線性度，從而提供更優(yōu)質(zhì)的音頻性能。BA5415A的電源電壓范圍廣泛，便于與多種電源配置兼容，適合各種市場(chǎng)需求。芯片詳細(xì)參數(shù) BA5415A的主要技術(shù)參數(shù)包括： - 電源電壓(Vcc): 3V至12V，具有極好的適應(yīng)性。 - 輸出功率: 在8歐姆負(fù)載下，最大輸出功率可達(dá)到1W，能夠有效驅(qū)動(dòng)小型揚(yáng)聲器。 - 頻率響應(yīng): 從低頻到高頻，頻率響應(yīng)范圍通常為20Hz至20kHz，滿足音頻應(yīng)用對(duì)頻率的嚴(yán)格要求。 - 信噪比(SNR): 高于80dB，保證了音質(zhì)的清晰度。 - 總諧波失真(THD): 在額定功率輸出時(shí)，失真率低于1%，增強(qiáng)音頻的忠實(shí)度。 - 保護(hù)電路: 集成短路和過(guò)熱保護(hù)電路，提高了產(chǎn)品的可靠性和使用壽命。廠家、...

產(chǎn)品型號(hào)BA5415A的Datasheet PDF文件預(yù)覽

Audio ICs

High-output dual power amplifier

BA5415A / BA5416

The BA5415A and BA5416 are dual power amplifier ICs that operate off a 9V to 15V supply. When driving a 4? load

off a 9V supply, the BA5415A does not require a heatsink. The BA5416 uses a lost-cost package. The basic characteris-

tics (total harmonic distortion etc.) of the amplifiers are excellent, and both ICs include a standby switch function.

FApplications

Radio cassette players.

FFeatures

1) High output.

4) Switching noise (“pop” noise) generated when the

power is switched on and off is small.

5) Ripple mixing when motor starts has been pre-

vented.

P^OUT= 5.4W (VCC = 12V, RL = 3? and THD = 10%)

P^OUT= 2.5W (VCC = 9V, RL = 4? and THD = 10%)

2) Excellent audio quality.

THD = 0.1% (f = 1kHz, P^O= 0.5W)

V^NO= 0.3mVrms (Rg = 10k?)

6) Built-in thermal shutout.

7) Built-in standby switch. Output is not influenced by

the standby pin voltage.

RR = 60dB (f^RR= 100Hz)

3) Wide operating power suppy voltage range.

V^CC= 5.0V to 18.0V (BA5416: 5.0V to 15.0V)

8) “On” mute time does not depend on V^CC.

9) Soft clipping.

10) Heatsink not required (for BA5415A, with V^CC= 9V

and R^Ly 4?).

FAbsolute maximum ratings (Ta = 25_C)

FRecommended operating conditions (Ta = 25_C)

395

Audio ICs

BA5415A / BA5416

FBlock diagram

FInternal circuit configuration

396

Audio ICs

BA5415A / BA5416

FElectrical characteristics (unless otherwise noted, Ta = 25_C, VCC = 12V, RL = 3?, RF = 240?,

Rg = 600?, and f = 1kHz)

FMeasurement circuit

397

Audio ICs

BA5415A / BA5416

FApplication examples

398

Audio ICs

BA5415A / BA5416

FOperation notes

(1) Input circuit

(3) Oscillation countermeasures

The structure of the input circuit is shown in Fig. 4. The

IC can be used without coupling capacitors, but a maxi-

mum of 0.5μA of bias current (I^BIN) flows from the input

pin, so if potentiometer sliding noise results from this,

connect an input capacitor C^INas shown below.

To prevent degradation of the IC characteristics, the input

bias resistor is not built into the IC. Connect an input bias

resistor (R^IN) between the input and GND (the recom-

mended value is about 33k?).

We recommend that the capacitor (C1) connected be-

tween the B. S pin and the V^CCpin for oscillation preven-

tion be a metal-film component with good temperature

and high-frequency characteristics.

Ceramic capacitors have poor temperature characteris-

tics, so if used, allow sufficient oscillation margin. It is

also possible to connect a capacitor for oscillation pre-

vention between the output and GND (C2).

The oscillation margin depends on the PCB pattern and

the mounting position of the capacitor. Design your PCB

after referring to the application example PCB.

(2) Gain adjustment

The gain is given by the following formula.

R^NF)RF

GV = 20log

(4) V^CCand GND lines

The Pre. GND and Pow. GND are joined at pin 12, so

there is a chance of crosstalk or degraded distortion per-

formance due to common ground impedance in the PCB

pattern. In addition, the power supply capacitor con-

nected between V^CCand GND is influenced by the PCB

pattern, and common V^CCand GND impedance may de-

grade the ripple rejection and distortion. Design the PCB

after referring to the application example PCB (the rec-

ommended value for the power supply capacitor is

1000μF of greater).

It is possible to reduce the gain by increasing R^F, but the

amount of feedback will increase, and oscillation will be

more likely to occur. We recommend that you set the gain

to 30dB or higher.

399

Audio ICs

BA5415A / BA5416

FOperation notes

(5) Standby switch

(7) Applied voltage

The IC has a built-in standby switch (pin 6), so the IC can

bepoweredonandoffbyaswitchwithlowcurrentcapac-

ity. The on voltage V¹can be in the range 3V to VCC, so

the standby switch will not adversely influence circuit

characteristics as with conventional methods. This also

increases design freedom. At normal temperatures, the

switch operates at a voltage of V¹= 3V or higher, but we

recommend that you use it at 3.5V or higher to allow for

low temperatures.

As long as the output power transistor is operated within

the ASO (safe operating range Fig. 9), the IC can be op-

erated to its absolute maximum ratings (V^CCMAX. =

24.0V). During normal operation, operate the IC within its

recommended operating voltage range; exceeding this

range will result in destruction of the IC. When the stand-

by switch is off, the IC is guaranteed up to V^CCMax. =

24.0V, but when the standby switch is on, set the power

supply regulation characteristics (including the capaci-

tance of the power supply capacitor connected between

V^CCand GND) so that VCC is 18.0V or less (15.0V or less

for the BA5416). If the IC is inserted backwards, V^CCand

GND will be reversed and the IC will be destroyed

instantly.

A small “pop” noise may be generated when the power

is switched off using the external switch. If this is the

case, connect a capacitor of about C³= 0.022μF in paral-

lel with the switch.

(6) Filter pin

Pin7isforconnectionofaripplefilter. Theripplerejection

can be increased somewhat by increasing the capaci-

tance, butthisalsoaffectsthestartingtime, sowerecom-

mend a value in the range 100μF to 220μF. The standard

starting time is 0.8sec.

(8) Thermal shutdown

If the load is shorted or there is insufficient heat dissipa-

tion, the thermal shutdown circuit will operate limit the

output and prevent damage to the IC. This occurs when

the temperature of the heatsink plate exceeds a temper-

ature of about 175_C.

(9) Other

Provided the recommended circuit constants are used,

the application circuit will function correctly. However, we

recommend that you confirm the characteristics of the

circuit in actual use.

If you change the circuit constants, check both the static

andtransientcharacteristicsofthecircuit, andallowsuffi-

cient margin to accommodate variations in both ICs and

external components.

(10) Standard values for the DC voltages on each pin (V^CC= 12V, Ta = 25_C, measurement circuit: Fig. 1)

400

Audio ICs

BA5415A / BA5416

FApplication board patterns

FElectrical characteristics curves

401

Audio ICs

BA5415A / BA5416

FElectrical characteristics curves

402

Audio ICs

BA5415A / BA5416

403

Audio ICs

BA5415A / BA5416

FExternal dimensions (Units: mm)

404

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BA5415A相關(guān)文章

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BA5415A產(chǎn)品參數(shù)

型號(hào):	BA5415A
是否無(wú)鉛：	不含鉛
是否Rohs認(rèn)證：	符合
生命周期：	Obsolete
IHS 制造商：	ROHM CO LTD
零件包裝代碼：	SIP
包裝說(shuō)明：	SIP, SIP12,.1TB
針數(shù)：	12
Reach Compliance Code：	compliant
ECCN代碼：	EAR99
HTS代碼：	8542.33.00.01
風(fēng)險(xiǎn)等級(jí)：	5.77
Is Samacsys：	N
商用集成電路類型：	AUDIO AMPLIFIER
增益：	45 dB
諧波失真：	10%
JESD-30 代碼：	R-PSFM-T12
JESD-609代碼：	e3/e2
長(zhǎng)度：	29.8 mm
信道數(shù)量：	2
功能數(shù)量：	1
端子數(shù)量：	12
最高工作溫度：	75 °C
最低工作溫度：	-25 °C
標(biāo)稱輸出功率：	5.4 W
封裝主體材料：	PLASTIC/EPOXY
封裝代碼：	SIP
封裝等效代碼：	SIP12,.1TB
封裝形狀：	RECTANGULAR
封裝形式：	IN-LINE
峰值回流溫度（攝氏度）：	260
認(rèn)證狀態(tài)：	Not Qualified
座面最大高度：	15.3 mm
子類別：	Audio/Video Amplifiers
最大壓擺率：	45 mA
最大供電電壓 (Vsup)：	18 V
最小供電電壓 (Vsup)：	5 V
表面貼裝：	NO
技術(shù)：	BIPOLAR
溫度等級(jí)：	COMMERCIAL EXTENDED
端子面層：	TIN/TIN COPPER
端子形式：	THROUGH-HOLE
端子節(jié)距：	2.54 mm
端子位置：	SINGLE
處于峰值回流溫度下的最長(zhǎng)時(shí)間：	10
寬度：	4.7 mm
Base Number Matches：	1

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產(chǎn)品型號(hào)BA5415A的概述

產(chǎn)品型號(hào)BA5415A的Datasheet PDF文件預(yù)覽

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