BD7830NUV Rohm, BD7830NUV Datasheet - Page 7

• Manufacturer Part Number: BD7830NUV
• Description: 1.1W to1.5W Monaural Speaker Amplifier
• Manufacturer: Rohm

●External components and cautions points
●Cb
BD7830NUV
© 2010 ROHM Co., Ltd. All rights reserved.
www.rohm.com
Setting of external components
This is a bypass capacitor, which is used for bias voltage stabilization.
When a larger capacitor is used, the efficiency of voltage ripple rejection can be improved.
When tuning, note with caution that Cb can affect the activation time.
-10
-20
-30
-40
-50
-60
-70
0
10
Cb=0.1uF
Cb=0.47uF
Cb=1uF
Cb=2.2uF
Cb – Power Supply Ripple Rejection Ratio
100
Vcc=3V, Vripple=200mVpp, RL=8Ω
STBY
SP_IN
Ci
Frequency[Hz]
Cb
Cs
Cb-PSRR
Ri
1k
SOFT
STBY
BIAS
IN－
1
2
3
4
SOFT
Bias
10k
Rf
Cf
100k
2ndAmp
1stAmp
7/17
80
70
60
50
40
30
20
10
OUT2
GND
VCC
OUT1
8
6
5
0
7
0
1μ
0.5
SPEAKER
Cb – Turn-on Time
Cb-ton
8Ω
1
Cb[uF]
www.DataSheet4U.com
1.5
Technical Note
2010.06 - Rev.A
2
2.5