BD3870FS ROHM Co. Ltd., BD3870FS Datasheet - Page 13

• Manufacturer Part Number: BD3870FS
• Description: Audio Sound Processor For Home Audio
• Manufacturer: ROHM Co. Ltd.

(BD3870FS,BD3871FS,BD3873FS)
●Reference data
Fig. 22 Treble Gain - Frequency
Fig.19 Treble Gain - Frequency
Fig.13 Circuit Current - Power Supply
Fig.16 Current Gain - Frequency
10
-10
-15
10
20
18
16
14
12
10
15
10
-5
8
6
4
2
0
8
6
4
2
0
5
0
10
10
0
(BD3870FS, BD3873FS)
10
-12～+12dB
2dB step
(BD3872FS)
2
100
100
FREQUENCY (Hz)
100
FREQUENCY (Hz)
FREQUENCY (Hz)
VCC (V)
4
1000
1000
1000
Voltage
At 18dB setting
6
10000
10000
10000
+12dB
-12dB
8
100000
100000
100000
10
Fig.14 Output Voltage - Input Voltage
Fig.20 Treble Gain - Frequency
Fig.17 Voltage Gain - Frequency
0.001
-10
-15
30
25
20
15
10
15
10
0.01
5
0
-5
5
0
0.1
10
10
10
1
0.001
-14～+14dB
2dB step
INPUT VOLTAGE (Vrms)
(BD3872FS)
100
FREQUENCY (Hz)
100
FREQUENCY (Hz)
(BD3870FS)
0.01
(BD3871FS)
13/16
1000
1000
0.1
At 24dB setting
+14dB
-14dB
10000
10000
1
100000
100000
10
Fig.21 Surround Gain - Frequency
ratio - Input Voltage (BD3870FS)
Fig.15 Total Harmonic Distortion
Fig.18 Bass Gain - Frequency
0.001
0.01
0.1
20
15
10
-10
-15
10
15
10
5
0
-5
1
0.001
5
0
10
10
INPUT VOLTAGE (Vrms)
0.01
100
FREQUENCY (Hz)
100
FREQUENCY (Hz)
At oppoite-phase input
+14dB
-14dB
1000
0.1
1000
-14～+14dB
2dB step
10000
10000
1
100000
100000
10