參數(shù)資料
型號： BA7781
廠商： Rohm CO.,LTD.
英文描述： Stereo microphone amplifier for camcorders
中文描述： 立體聲麥克風放大器的攝像機
文件頁數(shù)： 2/7頁
文件大?。?/td> 121K
代理商： BA7781
2
Video ICs
BA7781K
Absolute maximum ratings (Ta = 25°C)
Parameter
Symbol
Limits
Unit
V
CC
7.0
400
V
Pd
mW
Topr
°
C
Tstg
°
C
– 10 ~ +70
– 55 ~ +125
Reduced by 4mW for each increase in Ta of 1
°
C over 25
°
C.
Recommended operating conditions (Ta = 25°C)
Parameter
Power supply voltage
Power dissipation
Operating temperature
Storage temperature
Symbol
Min.
Typ.
Max.
Unit
V
CCS
3.0
—
5.25
V
Power supply voltage
Electrical characteristics (unless otherwise noted, Ta = 25°C and V
CC
= 3.3V)
Parameter
Symbol
Min.
Typ.
Max.
Unit
I
INT
—
5.0
8.0
mA
I
EXT
—
4.8
8.0
mA
VG
PR
12
13
14
dB
VG
OA
14
15
16
dB
THD
—
0.05
0.3
%
V
om
0.85
1.1
—
V
rms
VNO
—
– 90
– 80
dBV
CT
I
→
E
—
– 88
– 70
dB
—
– 61
– 50
dB
V
REG
2.3
2.5
2.75
V
V
HSWH
1.6
—
V
CC
V
V
HSWL
0
—
0.6
V
VG
HON
—
—
– 30
dB
VG
HOFF
—
—
– 30
dB
V
HON
2.5
—
V
V
HOFF
0
—
0.3
V
CT
L
← →
R
Conditions
V
CC
INT MIC IN, L / Rch
No dissipation by mic
EXT MIC IN, L / Rch
No dissipation by mic
30 / 32pin
→
2pin GAIN
27 / 25pin
→
23pin GAIN
3 / 6 / 7pin
→
8pin GAIN
22 / 19 / 18pin
→
17pin GAIN
INT / EXT, Vo = 300mV
rms
, L / Rch
2
INT / EXT MIC IN, L / Rch
f = 1kHz (distortion 1%
2
)
INT / EXT, L / Rch, R
g
= 1k
When gain is 28dB
1
INT / EXT MIC, Lch
→
Rch, R
g
= 1k
(distortion 1%
2
) , when gain is 28dB
1
15pin – 29.0dBV IN (80Hz)
6 / 19pin – 25.5dBV IN (1kHz)
6
→
8pin / 19
→
17pin GAIN
15pin – 45.0dBV IN (80Hz)
7 / 18pin – 25.5dBV IN (1kHz)
7
→
8pin / 18
→
17pin GAIN
HPF on holding voltage (pin 16)
HPF off holding voltage (pin 16)
INT
→
EXT MIC IN, R
g
= 1k
, L / Rch
(distortion 1%
2
) , when gain is 28dB
1
Current dissipation 1
Current dissipation 2
Preamplifier gain
Output amplifier gain
Distortion
Maximum output voltage
Output noise voltage
Input switch separation
Interchannel separation
Internal microphone power supply voltage
Input switch control voltage
High-pass filter switching
attenuation characteristic
High-pass filter control voltage
1 JIS-A filter used.
2 400Hz to 30kHz filter used.
Pin 27 output voltage for 30k
load
“H”level, 1 / 24 pin DC
“L” level, 1 / 24 pin DC
Input 80Hz signal to pin 15, and
measure gain at switch off side.
1
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相關代理商/技術參數(shù)
參數(shù)描述
BA7781K 制造商:ROHM 制造商全稱:Rohm 功能描述:Stereo microphone amplifier for camcorders
BA7785 制造商:未知廠家 制造商全稱:未知廠家 功能描述:
BA7785FS 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Triple Audio Amplifier
BA7786FP-Y 制造商:ROHM 制造商全稱:Rohm 功能描述:Headphone / speaker amplifier for notebook computers
BA7786FP--Y/BA7787FS 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Headphone/Speaker Amplifier for Notebook Computers
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