BH3874AKS2 View Datasheet(PDF) - ROHM Semiconductor
Part Name
Description
Manufacturer
BH3874AKS2 Datasheet PDF : 25 Pages
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Audio ICs
!Measurement circuit
51k
1 2 SW6
1 2 SW5
51k
1 2 SW3
1 2 SW2
BH3874AKS2
SW4
4321
SW1
4321
4.7µ 4.7µ 2.2µ 2.2µ 2.2µ 2.2µ 2.2µ 2.2µ
10µ
62k
∗9.1k
15k
10k
0.22µ
48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33
THD
10µ
100k
1
49 ALCC
2 SW8
50 ALCR
∗150k
10k
51 RECL
10µ
52 RECR
10k 10µ
53 VFC1
∗0.1µ
54 GND
10k
OUTL 32
10µ
THD
OUTR 31
10µ
10k
VCC 30
VCC
CAP 29
0.1µ
FILTER 28
10µ 220µ
BASS5 27
∗3.3k ∗68k
55 VFC2
1 ∗0.047µ
56 MIC
2 SW7 10µ
57 DPLL1
10µ
DPL
58 DPLL2
10µ
59 DPLR1
10µ
60 DPLR2
10µ
61 PS1
∗0.047µ
62 PS2
∗4700p
∗0.22µ
63 F1L1
∗0.22µ
64 F1L2
BH3874AKS2
(SQFPT64)
BASS4 26
BASS3 25
BASS2 24
BASS1 23
∗0.22µ
∗0.22µ
∗0.1µ
∗22k
∗0.1µ
∗15k
HPFR3 22
∗15k
HPFR2 21
∗47k
∗0.068µ
HPFR1 20
∗0.068µ
∗0.068µ
∗47k
HPFL3 19
∗15k
HPFL2 18
∗47k
∗0.068µ
HPFL1 17
∗0.068µ
∗0.068µ
∗47k
1 2 3 4 5 6 7 8 9 10 11 12 13 14
∗0.22µ
∗0.1µ
∗0.1µ
∗0.022µ
∗0.022µ
∗0.01µ
∗0.01µ
∗0.22µ
∗0.1µ
∗0.1µ
∗0.022µ
∗0.022µ
∗0.01µ
∗0.01µ
15 16
∗
0.0022µ
∗0.0022µ
Fig.1
Recommendable External Parts
1. Element marked with ∗
· Carbon-film resistor : ±1%
· Film capacitor
: ±1%
· Ceramic capacitor : ±1%
2. Unless specified particularly, use the
following external parts:
· Carbon-film resistor : ±5%
· Film capacitor
: ±20%
· Electrolytic capacitor : ±20%
Notes on wiring
1. GND shall be wired solidly.
2. Wiring pattern of SI and SCK shall be away from
that of analog unit and cross talk shall not be
acceptable.
3. Lines of SI and SCK shall not be parallel if
possible. The lines shall be shielded, if they are
adjacent to each other.
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