BH3854AFS-E2 Rohm Semiconductor, BH3854AFS-E2 Datasheet - Page 12

• Manufacturer Part Number: BH3854AFS-E2
• Description: IC SERIAL SOUND CTRL SSOP-A32 TR
• Manufacturer: Rohm Semiconductor
• Type: Audio Processorr

Specifications of BH3854AFS-E2

• Applications: Automotive
• Mounting Type: Surface Mount
• Package / Case: 32-SSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

FOperation notes
(1)
As long as the operating power supply voltage and ambi-
ent temperature are kept within the specified range, the
basic circuits are guaranteed to function, but be sure to
check the constants as well as the element settings, volt-
age settings, and temperature settings. Also, please take
into consideration internal IC resistance dispersion
(approx. "20%) and temperature fluctuation when mak-
ing settings for IC internal resistance, attachment resis-
tance, capacitor gain, or frequency.
(2)
(1) The input impedance is 47k .
(2) A buffer if R and C
(3) The gain can be set by R and the 20k .
Note: Set C
(3)
644
Audio ICs
G
VC
the frequency band used.
Operating power supply voltage range
Primary amp
Bass filter
= (R + 20k ) / R
2
(input coupling) and C
1
are not present.
1
(used to set the gain) depending on
(1) The BPF is composed of a multifeedback active filter.
f
(theoretical equation)
(4)
o
can be varied according to the value of C.
Q
Note: Filter gain is calculated using the equation above. Total output
f
G =
(When R
f
O
O
Treble filter
=
=
gain is the sum of the gain for each of the internal circuits.
5k
2
R
1
5.1 10
R
2
2
R
C
1
C
= 11.5k , R
1
1
C
2
R
1)
BH3854AS / BH3854AFS
–6
1
R
2
1
1
2
C
Q
C
C
1
C
2
1
(C
2
2
1.36 G
1
= 85k , C
2
1
*1
) C
2
)
*1
1
8.5
= C
2
= C)