BH3854AFS-E2 Rohm Semiconductor, BH3854AFS-E2 Datasheet - Page 15

• 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

(13) DC control
There is internal impedance of 10k at the VC (pin 23),
TC (pin 22), and BC (pin 21) pins, and internal imped-
ance of 200k at the SC pin (pin 11). For this reason, it
is recommended that DC control of these pins be per-
formed by voltage delivered directly from the voltage
source. When using variable volume, take the imped-
ance into account in determining the settings.
Note: The voltage range for DC control is 0V to 3.8V. Be
(14) GND
S Connect the GND of the attached element, which is
S Connect the GND of the capacitor that is connected to
S If several capacitors with good high-frequency charac-
FElectrical characteristic curves
FExternal dimensions (Units: mm)
Audio ICs
shown in the circuit of the sample application, to the
analog GND.
pin 17 to the digital GND.
sure not to apply greater than 3.8V to any pin.
(15) BH3854AS ! BH3854AFS: Differences
S The bass filter R
S The resistance at the treble filter’s TIN pin changes
teristics are connected in parallel to the 17th-pin capac-
itor, the characteristics will be improved with respect to
static electricity noise. (Recommended: ceramic ca-
pacitors of 0.001 F to 0.1 F) If the wiring to the analog
GND and digital GND is long, make sure that no poten-
tial difference arises between the two GNDs.
k . Accordingly, bass filter f
75Hz, which means bass filter Q changes from 1.47 !
1.36.
from 20 k
tached capacitor changes from 470pF ! 0.01 F,
which means that cutoff frequency (f
17kHz ! 8kHz.
! 2 k . Accordingly, the value for the at-
2
BH3854AS / BH3854AFS
constant changes from 100 k ! 85
0
changes from 70Hz !
C
1
) changes from
647