NJW1201A Datasheet, PDF (1/30 Pages) New Japan Radio – 2ch Electronic Volume with Dynamic Bass Boost 5+1diff Input Selector

NJW1201A
2ch Electronic Volume with Dynamic Bass Boost
!GENERAL DESCRIPTION
The NJW1201A is a 2-channel electronic volume with Dynamic
Bass Boost. 5+1diff-in 1-out selector. It includes 5+1diff input
selector, 1st-volume, 2nd-volume, 3 band Tone, Sound mode,
Dynamic Bass Boost. The NJW1201A performs low noise and low
distortion characteristics with resistance ladder circuit.
All of functions are controlled by I²C BUS interface.
!PACKAGE OUTLINE
! FEATURES
" Operating Voltage
" I²C BUS Control
" Low output noise
" Low THD
" 5+1diff Input Selector
" Input Gain
" 1st-Volume
" 2nd-Volume
" 3 Band Tone
" Sound mode
" Sound Gain
" Dynamic Bass Boost
" Bi-CMOS Technology
" Package Outline
+7.5 to +10V
NJW1201AFH2
-110dBVtyp.
0.01%typ.
0 to +30dB/2dBstep
0 to -62dB / 1dBstep, MUTE
0 to -28dB / 2dBstep, MUTE
0 to ±14dB/ 2dBstep (Treble,Middle), 0 to ±17.5dB/ 2.5dBstep (Bass)
3 modes (eala, ealaTreble, eala & ealaTreble)
2-level Gains
3-level Gains
LQFP52-H2
! BLOCK DIAGRAM
INPUT(Bch)
Filter terminal
for Sound Mode
39 38 37 36 35 34 33 32 31 30 29 28 27
INPUT4 Bch
C33 + 40
4.7u
41
INPUT5 Bch
C34 + 42
4.7u
43
INPUT6 Bch
C35 + 44
4.7u
VREF C36 + 45
4.7u
INPUT6 Diff C37 + 46
4.7u
INPUT6 Ach
C38 + 47
4.7u
48
49
INPUT5 Ach
C39 + 50
4.7u
51
INPUT4 Ach
C40 + 52
4.7u
C21 Filter terminal
26
68n
for Sound Mode
25
1u
C20 AGC Smoothing Filter
for Dynamic Bass Boost
R9
ExtSense terminal.
24
3k 4.7u C19
Possible to unconnect
C18
23
4.7u
22
C17 _OUTPUT(Bch)
4.7u
21
V+
22u
R8
C16
20
SCL
R7
19
SDA
18
GND
C15
17
4.7u
C14
16
4.7u
OUTPUT(Ach)
15
14
INPUT(Ach)
1
2
3
4
5
6
7
8
9 10 11 12 13
Ver.1.0E
–1–