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BA7781 PDF预览

BA7781

更新时间: 2024-02-26 21:35:17
品牌 Logo 应用领域
罗姆 - ROHM 放大器摄像机
页数 文件大小 规格书
7页 123K
描述
Stereo microphone amplifier for camcorders

BA7781 技术参数

是否无铅:不含铅是否Rohs认证:符合
生命周期:Active零件包装代码:QFP
包装说明:QFP-32针数:32
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.33.00.01风险等级:5.71
Is Samacsys:N商用集成电路类型:AUDIO AMPLIFIER
JESD-30 代码:S-PQFP-G32JESD-609代码:e3/e2
长度:7 mm信道数量:1
功能数量:1端子数量:32
封装主体材料:PLASTIC/EPOXY封装代码:LQFP
封装形状:SQUARE封装形式:FLATPACK, LOW PROFILE
峰值回流温度(摄氏度):260认证状态:Not Qualified
座面最大高度:1.55 mm最大供电电压 (Vsup):5 V
最小供电电压 (Vsup):3 V表面贴装:YES
端子面层:TIN/TIN COPPER端子形式:GULL WING
端子节距:0.8 mm端子位置:QUAD
处于峰值回流温度下的最长时间:10宽度:7 mm
Base Number Matches:1

BA7781 数据手册

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Video ICs  
BA7781K  
Absolute maximum ratings (Ta = 25°C)  
Parameter  
Symbol  
VCC  
Limits  
7.0  
Unit  
V
Power supply voltage  
Power dissipation  
Pd  
400  
mW  
°C  
Topr  
Tstg  
– 10 ~ +70  
– 55 ~ +125  
Operating temperature  
Storage temperature  
°C  
Reduced by 4mW for each increase in Ta of 1°C over 25°C.  
Recommended operating conditions (Ta = 25°C)  
Parameter  
Symbol  
Min.  
3.0  
Typ.  
Max.  
5.25  
Unit  
V
CCS  
V
Power supply voltage  
Electrical characteristics (unless otherwise noted, Ta = 25°C and VCC = 3.3V)  
Symbol  
IINT  
Min.  
Typ.  
5.0  
Max.  
8.0  
Unit  
mA  
Conditions  
INT MIC IN, L / Rch  
No dissipation by mic  
Parameter  
Current dissipation 1  
EXT MIC IN, L / Rch  
No dissipation by mic  
Current dissipation 2  
Preamplifier gain  
EXT  
I
4.8  
13  
8.0  
14  
mA  
dB  
30 / 32pin 2pin GAIN  
VGPR  
12  
27 / 25pin 23pin GAIN  
3 / 6 / 7pin 8pin GAIN  
Output amplifier gain  
Distortion  
OA  
VG  
14  
15  
0.05  
1.1  
16  
0.3  
dB  
%
22 / 19 / 18pin 17pin GAIN  
2
THD  
Vom  
INT / EXT, Vo = 300mVrms, L / Rch  
INT / EXT MIC IN, L / Rch  
f = 1kHz (distortion 1%  
Maximum output voltage  
0.85  
Vrms  
2
)
INT / EXT, L / Rch, Rg = 1k  
When gain is 28dB  
Output noise voltage  
VNO  
– 90  
– 88  
– 61  
2.5  
– 80  
– 70  
– 50  
2.75  
dBV  
dB  
dB  
V
1
INT EXT MIC IN, Rg = 1k, L / Rch  
Input switch separation  
CTI  
E  
(distortion 1% 2 ) , when gain is 28dB  
1
INT / EXT MIC, Lch Rch, Rg = 1kΩ  
Interchannel separation  
CTL← →R  
VREG  
(distortion 1% 2 ) , when gain is 28dB  
Pin 27 output voltage for 30kload  
“H”level, 1 / 24 pin DC  
1
2.3  
Internal microphone power supply voltage  
HSWH  
V
1.6  
0
VCC  
V
V
Input switch control voltage  
HSWL  
V
0.6  
“L” level, 1 / 24 pin DC  
Input 80Hz signal to pin 15, and  
measure gain at switch off side.  
1
15pin – 29.0dBV IN (80Hz)  
VGHON  
– 30  
– 30  
dB  
dB  
6 / 19pin – 25.5dBV IN (1kHz)  
High-pass filter switching  
attenuation characteristic  
6
8pin / 19 17pin GAIN  
15pin – 45.0dBV IN (80Hz)  
7 / 18pin – 25.5dBV IN (1kHz)  
HOFF  
VG  
7
8pin / 18 17pin GAIN  
VHON  
2.5  
0
VCC  
0.3  
V
V
HPF on holding voltage (pin 16)  
HPF off holding voltage (pin 16)  
High-pass filter control voltage  
HOFF  
V
1 JIS-A filter used.  
2 400Hz to 30kHz filter used.  
2

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