NJRC NJW1201A

NJW1201A
2ch Electronic Volume with Dynamic Bass Boost
!GENERAL DESCRIPTION
!PACKAGE OUTLINE
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.
2
All of functions are controlled by I C BUS interface.
! FEATURES
" Operating Voltage
2
" I C 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
NJW1201AFH2
+7.5 to +10V
-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
7
9
4.7k
C22
4.7n
BAS
11
R6
12
C10
R3
C9
C8
R2
4.7k
C7
C6
R1
75k
BAS
10
C5
C4
C3
INPUT1 Ach
INPUT2 Ach
C2
C1
INPUT3 Ach
Ver.1.0E
220n
47n
22n
C23
R11
4.7k
C25
C26
MID
8
4.7u
13
220n
6
C14
C12
5
OUTPUT(Ach)
4.7u
14
47n
4
22n
3
4.7n
2
4.7n
1
4.7u
INPUT(Ach)
TRE
0dB
52
50k
4.7u
15
4.7u
+
51
50k
C40
GND
C15
17
16
4.7u
INPUT4 Ach
SDA
18
50
50k
4.7u
50k
INPUT5 Ach
+
R7
19
25k
49
C39
C16
SCL
C13
50k
48
R8
20
Band PassFilter terminal
for Dynamic Bass Boost
50k
47
OUTPUT(Bch)
V+
220n
4.7u
ExtSense terminal.
Possible to unconnect
22u
R5
+
C17
4.7u
21
R4
C38
C19
C18
5.6k
INPUT6 Ach
46
4.7u
4.7u
2
4.7u
R9
3k
22
I C
+
AGC Smoothing Filter
for Dynamic Bass Boost
1u
24
C11
4.7u
C37
45
Filter terminal
for Sound Mode
C20
220n
4.7u
C21
68n
25
2ndVolume (0 to -28dB,Mute 2dB step)
INPUT6 Diff
+
26
4.7k
VREF
C36
44
0 to +30dB 2dB step
4.7u
50k
+
50k
C35
27
23
50k
43
INPUT6 Bch
28
2.2k
42
29
Sound Mode
&
DynamicBassBoost
4.7u
30
Filter terminal
for Sound Mode
25k
+
1stVolume (0 to -62dB,Mute 1dB step)
C34
31
MID
41
INPUT5 Bch
32
C24
R12
33
4.7n
4.7n
4.7u
R10
C27
C28
C29
INPUT1 Bch
INPUT2 Bch
C30
34
TRE
40
35
0dB
4.7u
36
50k
+
37
50k
C33
38
50k
INPUT4 Bch
39
50k
INPUT(Bch)
4.7u
C31
4.7u
C32
INPUT3 Bch
! BLOCK DIAGRAM
–1–
NJW1201A
■PIN CONFIGURATION
LQFP52
39
38
1
35
34
33
32
31
30
29
28
27
26
41
25
42
24
43
23
44
22
45
21
46
20
47
19
48
18
49
17
50
16
51
15
52
14
Symbol
NC
36
40
1
No.
37
2
3
4
Function
5
6
7
8
9
10
11
12
No
Symbol
Not Connected
27
SRFil
13
Function
Filter for Sound Mode
2
In3A
Ach Input3
28
TONEB2B
3
IN2A
Ach Input2
29
TONEB1B
Bch Bass(Tone) Filter 2
In1A
Ach Input1
30
TONEM2B
Bch Middle(Tone) Filter 1
MonOutA
Ach Monitor Output
31
TONEM1B
Bch Middle(Tone) Filter 2
RecOutA
Ach Rec Output
32
TONEHB
Ach 1 Volume Input
33
VOLInB
Bch 1st Volume Input
Ach Treble(Tone) Filter
34
RecOutB
Bch Rec Output
Bch Monitor Output
4
5
6
7
VOLInA
8
TONEHA
9
st
Bch Bass(Tone) Filter 1
Bch Treble(Tone) Filter
TONEM1A
Ach Middle(Tone) Filter 1
35
MonOutB
10
TONEM2A
Ach Middle(Tone) Filter 2
36
In1B
Bch Input1
11
TONEB1A
Ach Bass(Tone) Filter 1
37
IN2B
Bch Input2
12
TONEB2A
Ach Bass(Tone) Filter 2
38
IN3B
Bch Input3
13
BPF1
Filter 1 for DBB
39
NC
14
BPF2
Filter 2 for DBB
40
IN4B
15
BPF3
Filter 3 for DBB
41
NC
Ach DC coupling for 2nd Volume
42
IN5B
Not Connected
Bch Input4
Not Connected
16
VOL2CAPA
17
OutA
Ach Output
43
NC
18
GND
Ground
44
IN6B
Bch Input6
19
SDA
I2C DATA
45
VREF
Reference Voltage
20
SCL
Negative Input for Input6
21
V+
22
OutB
23
VOL2CAPB
24
ExtSense
25
INT
26
–2–
SurTC
Bch Input5
Not Connected
I2C CLOCK
46
In6Diff
Supply Voltage
47
In6A
Bch Output
48
NC
Not Connected
Bch 2nd Volume DC coupling
49
NC
Not Connected
AGC Boost Level for DBB
50
In5A
AGC Smoothing Filter for DBB
51
NC
Filter for Sound Mode
52
In4A
Ach Input6
Ach Input5
Not Connected
Ach Input4
NJW1201A
! ABSOLUTE MAXIMUM RATING (Ta=25°C)
PARAMETER
SYMBOL
RATING
UNIT
Power Supply Voltage
V+
10.5
V
Power Dissipation
PD
1200 (Note1)
mW
Maximum Input Voltage
VIMAX
0 ~ V+ (Note2)
V
Operating Temperature Range
Topr
-20 ~ +75
°C
Storage Temperature Range
Tstg
-40 ~ +125
°C
(Note1) EIA/JEDEC STANDARD Test board (76.2x114.3x1.6mm, 2layer, FR-4) mounting
(Note2) Don’t put Input Voltage more than Power Supply Voltage.
!ELECTRICAL CHARACTERISTICS
+
(Ta=25°C,V =9V, Rg=0Ω, RL=47kΩ, Vin=1Vrms, f=1kHz,1stVOL=0dB, all controls flat unless otherwise specified)
PARAMETER
SYMBOL
TEST CONDITION
MIN.
TYP.
MAX.
UNIT
7.5
9.0
10.0
V
Operating Voltage
V+
Supply Current
IDD
No signal
-
12
18
mA
VREF
No signal
4.0
4.5
5.0
V
RINVOL
No signal
-
26.5
-
kΩ
Reference Voltage
Volume Input Resistance
Maximum Input Voltage
VIM
1st Volume=-20dB
THD=1%
2.0
2.4
-
Vrms
Maximum Output Voltage
VOM
THD=1%
2.0
2.4
-
Vrms
-
30
-
dB
-1
0
1
dB
-
-100
-90
dB
-1
0
1
dB
VO=0.5Vrms, BW=400Hz-30kHz
-
0.01
0.05
%
Rg=0Ω, Filter : A-Weighted
-
-100
(10)
-94
(20)
dBV
(uVrms)
-
-110
(3)
-100
(10)
dBV
(uVrms)
-
-
-80
dB
-
-
-80
dB
Maximum Input Gain
GVINMAX
Maximum Gain
GVMAX
Mute Level
Mute
Channel Balance
GCB
Total Harmonic Distortion
THD+N
Output Noise Voltage 1
VNO1
Output Noise Voltage 2
VNO2
Cross Talk
CT
Channel Separation
CS
Input Gain=+30dB
Vin=50mVrms
1st Volume = Mute
2nd Volume = Mute
1st Volume = Mute
2nd Volume=Mute
Rg=0Ω, Filter : A-Weighted
Selected Input : Rg=0Ω
Unselected Input : Signal
Rg=0Ω
♦Tone Control
+
(Ta=25°C,V =9V, Rg=0Ω, RL=47kΩ, Vin=0.1Vrms, f=1kHz,all controls flat unless otherwise specified)
PARAMETER
SYMBOL
TEST CONDITION
MIN.
TYP.
MAX.
UNIT
High Frequency Boost
HFBST
TREB=”1111”, f=10kHz
11.5
14.0
16.5
dB
High Frequency Cut
HFCUT
TREB=”0111”, f=10kHz
-16.5
-14.0
-11.5
dB
Mid Frequency Boost
MFBST
MIDD=”1111”, f=1kHz
11.5
14.0
16.5
dB
Mid Frequency Cut
MFCUT
MIDD=”0111”, f=1kHz
-16.5
-14.0
-11.5
dB
Low Frequency Boost
LFBST
BASS=”1111”, f=100Hz
15.0
17.5
20.0
dB
Low Frequency Cut
LFCUT
BASS=”0111”, f=100Hz
-20.0
-17.5
-15.0
dB
–3–
NJW1201A
♦ Sound mode Characteristics
+
(Ta=25°C,V =9V, Rg=0Ω, RL=47kΩ, Vin=0.1Vrms, f=1kHz,all controls flat unless otherwise specified)
PARAMETER
SYMBOL
SOUND MODE 1
GVm1
SOUND MODE 2
GVm2
SOUND MODE 3
GVm3
TEST CONDITION
SOUNDMODE=”01”
Ain-Aout, f=10kHz
SOUNDMODE=”10”
Ain-Aout,
SOUNDMODE=”11”
Ain-Aout
MIN.
TYP.
MAX.
UNIT
-
4.0
-
dB
-
4.0
-
dB
-
4.5
-
dB
♦ Sound Gain Characteristics
+
(Ta=25°C,V =9V, Rg=0Ω, RL=47kΩ, Vin=0.1Vrms, f=1kHz,all controls flat unless otherwise specified)
PARAMETER
SYMBOL
SOUND GAIN 1
GVS1
SOUND GAIN 2
GVS2
TEST CONDITION
SOUNDGAIN =”0”
SOUNDMODE=”10”
Ain-Aout,
SOUNDGAIN =”1”
SOUNDMODE=”10”
Ain-Aout,
MIN.
TYP.
MAX.
UNIT
-
4.0
-
dB
-
6.5
-
dB
♦ Dynamic Bass Boost Characteristics
+
(Ta=25°C,V =9V, Rg=0Ω, RL=47kΩ, Vin=0.05Vrms, f=1kHz,all controls flat unless otherwise specified)
PARAMETER
SYMBOL
TEST CONDITION
MIN.
TYP.
MAX.
UNIT
DBB Gain 1
GVSDBB1
DBBGain=”01”, (A+B)in-Aout
-
7.5
-
dB
DBB Gain 2
GVSDBB2
DBBGain=”10”, (A+B)in-Aout
-
10.5
-
dB
DBB Gain 3
GVSDBB3
DBBGain=”11”, (A+B)in-Aout
-
14.0
-
dB
–4–
NJW1201A
2
!TIMING ON THE I C BUS (SDA,SCL)
SDA
tf
tr
tHD:STA
tf
tSU:DAT
tSP
tBUF
tr
SCL
tHD:STA
tSU:STA
S
tLOW
tHD:DAT
tSU:STO
tHIGH
Sr
P
S
!CHARACTERISTICS OF I/O STAGES FOR I2C BUS (SDA,SCL)
2
I C BUS Load Conditions
STANDARD MODE :
FAST MODE :
Pull up resistance 4kΩ (Connected to +5V), Load capacitance 200pF (Connected to GND)
Pull up resistance 4kΩ (Connected to +5V), Load capacitance 50pF (Connected to GND)
PARAMETER
SYMBOL
Standard mode
Fast mode
MIN.
TYP.
MAX.
MIN.
TYP.
MAX.
UNIT
Low Level Input Voltage
VIL
0.0
-
1.5
0.0
-
1.5
V
High Level Input Voltage
VIH
2.7
-
5.0
2.7
-
5.0
V
Low level output voltage (3mA at SDA pin)
VOL
0
-
0.4
0
-
0.4
V
Ii
-10
-
10
-10
-
10
µA
Input current each I/O pin with an input voltage
between 0.1VDD and 0.9VDDmax
–5–
NJW1201A
2
!CHARACTERISTICS OF BUS LINES (SDA,SCL) FOR I C-BUS DEVICES
PARAMETER
SYMBOL
Standard mode
Fast mode
UNIT
MIN.
TYP.
MAX.
MIN.
TYP.
MAX.
fSCL
-
-
100
-
-
400
kHz
tHD:STA
4.0
-
-
0.6
-
-
µs
Low period of the SCL clock
tLOW
4.7
-
-
1.3
-
-
µs
High period of the SCL clock
tHIGH
4.0
-
-
0.6
-
-
µs
tSU:STA
4.7
-
-
0.6
-
-
µs
tHD:DAT
0
-
-
0
-
-
µs
tSU:DAT
250
-
-
100
-
-
ns
Rise time of both SDA and SCL signals
tr
-
-
1000
-
-
300
ns
Fall time of both SDA and SCL signals
tf
-
-
300
-
-
300
ns
tSU:STO
4.0
-
-
0.6
-
-
µs
Bus free time between a STOP and START condition
tBUF
4.7
-
-
1.3
-
-
µs
Capacitive load for each bus line
Cb
-
-
400
-
-
400
pF
Noise margin at the Low level
VnL
0.5
-
-
0.5
-
-
V
Noise margin at the High level
VnH
1
-
-
1
-
-
V
SCL clock frequency
Hold time (repeated) START condition.
Set-up time for a repeated START condition
Data hold time
NOTE)
Data set-up time
Set-up time for STOP condition
Cb ; total capacitance of one bus line in pF.
NOTE). Data hold time : tHD:DAT
Please hold the Data Hold Time (tHD:DAT) to 300ns or more to avoid status of unstable at SCL falling edge.
The SDA block in the NJW1201A does not hold data. Add external data-delay-circuit of the SDA terminal, in case of not
providing a hold time of at least 300nsec for the SDA in the master device.
The time-consists of the data-delay-circuit of the SDA terminal are as follows.
TLH ≈ RP*CD
THL ≈ RD*CD
(a) Low level $ High level :
(b) High level $ Low level :
In addition, Schottky barrier diode (SBD) influences a Low level at the Acknowledge. Therefore choose the low forward
voltage (Vf) as much as possible.
VDD
RP
RP
SCL
MASTER
SBD
SDA
RD
–6–
CD
NJW1201A
NJW1201A
2
! DEFINITION OF I C REGISTER
2
♦I C BUS FORMAT
MSB
S
LSB
Slave Address
1bit
8bit
MSB
LSB
A
Select Address
1bit
8bit
MSB
LSB
A
1bit
Data
A
P
8bit
1bit
1bit
S: Starting Term
A: Acknowledge Bit
P: Ending Term
♦SLAVE ADDRESS
Slave Address
Hex
MSB
1
0
0
0
1
0
0
LSB
-
0
88(h)
♦CONTROL REGISTER TABLE
st
nd
The select address sets each function (Input Selector, Input Gain, 1 -Volume, Tone Control, 2 -Volume, ealaSurrond,
Dynamic Bass Boost, Other Settings).
The auto increment function cycles the select address as follows.
00H→01H→02H→03H→04H→00H
<Write Mode>
Select
Address
00H
01H
02H
03H
04H
BIT
D7
*
*
*
D6
D4
D5
D3
D2
D1
D0
INPUT SELECTOR
*
TREB (0 to ±14dB/ 2dBstep)
BASS (0 to ±17.5dB/ 2.5dBstep)
SOUND GAIN
INPUT GAIN (0 to 30dB / 2dBstep)
1st-VOL (0 to -55dB / 1dBstep, MUTE)
MIDD (0 to ±14dB/ 2dBstep)
2nd-VOL (0 to -28dB / 2dBstep, MUTE)
DBB GAIN (3 levels)
DBB SENSE (3 levels)
SOUND MODE (3 modes)
* : Don’t Care
♦CONTROL REGISTER DEFAULT VALUE
Control register default value is all “0”.
BIT
Select
Address
D7
D6
D5
D4
D3
D2
D1
D0
00H
01H
02H
03H
04H
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
–7–
NJW1201A
!INSTRUCTION CODE
a) INPUT SELECTOR, INPUT GAIN SETTING
BIT
Select
Address
D7
00H
*
D6
D5
D4
D3
D2
INPUT SELECTOR
D1
D0
INPUT GAIN
•INPUT SELECTOR : INPUT 1 to 5 (Single Ended), INPUT 6 (Single Ended/Differential), Mute
•INPUT GAIN
: 0 to +30 dB (2dB/Step)
st
b) HI PATH FILTER SWITCH, 1 VOLUME
BIT
Select
Address
D7
01H
D6
*
D5
D4
D3
D2
D1
D0
D1
D0
D1
D0
st
1 VOLUME
*
st
•1 Volume : 0 to -62 dB (1dB/Step) , MUTE
c) TREBLE, MIDDLE
BIT
Select
Address
D7
D6
02H
D5
D4
D3
D2
TREB
MIDD
•TREB : 0 to ±14dB/ 2dBstep
• MIDD : 0 to ±14dB/ 2dBstep
nd
d) BASS, 2
Select
Address
VOLUME
BIT
D7
D6
03H
D5
D4
D3
D2
BASS
2
nd
VOLUME
•BASS : 0 to ±17.5dB/ 2.5dBstep
nd
•2 VOLUME : 0 to -28dB/ 2dBstep , MUTE
e) SOUND ENHANCEMENT, DYNAMIC BASS BOOST
Select
Address
BIT
D7
D6
D5
D4
SOUND
SOUND MODE
GAIN
•SOUND GAIN : Sound Gain has 2 levels
•SOUND MODE : Sound mode has 3 types
•DBB GAIN : Dynamic Bass Boost Gain has 3 levels
•DBB SENSE : This means detect level of input signal.
04H
–8–
*
D3
D2
DBB GAIN
D1
D0
DBB SENSE
NJW1201A
!INPUT SELECTOR (Select Address : 00H)
00H
D6
D5
D4
INPUT 1
0
0
0
INPUT 2
0
0
1
INPUT 3
0
1
0
INPUT 4
0
1
1
INPUT 5
1
0
0
INPUT 6 (Single Ended)
1
0
1
INPUT 6 (Differential)
1
1
0
MUTE
1
1
1
*: Default Value
!INPUT GAIN (Select Address : 00H)
00H
Gain(dB)
D3
D2
D1
D0
0*
0
0
0
0
+2
0
0
0
1
+4
0
0
1
0
+6
0
0
1
1
+8
0
1
0
0
+10
0
1
0
1
+12
0
1
1
0
+14
0
1
1
1
+16
1
0
0
0
+18
1
0
0
1
+20
1
0
1
0
+22
1
0
1
1
+24
1
1
0
0
+26
1
1
0
1
+28
1
1
1
0
+30
1
1
1
1
*: Default Value
–9–
NJW1201A
st
!1 VOLUME (Select Address : 01H)
01H
Gain (dB)
D5
D4
D3
D2
D1
D0
0
1
1
1
1
1
1
-1
1
1
1
1
1
0
-2
1
1
1
1
0
1
-3
1
1
1
1
0
0
-4
1
1
1
0
1
1
-5
1
1
1
0
1
0
-6
1
1
1
0
0
1
-7
1
1
1
0
0
0
-8
1
1
0
1
1
1
1
0
1
1
1
1
1
1
1
%%%
-16
%%%
%%%
-32
%%%
0
1
1
-48
0
0
1
1
1
1
%%%
%%%
%%%
%%%
%%%
%%%
%%%
-56
0
0
0
1
1
1
-57
0
0
0
1
1
0
-58
0
0
0
1
0
1
-59
0
0
0
1
0
0
-60
0
0
0
0
1
1
-61
0
0
0
0
1
0
%%%
%%%
-62
0
0
0
0
0
1
MUTE
0
0
0
0
0
0
*: Default Value
– 10 –
NJW1201A
!TREBLE (Select Address : 02H)
02H
Gain(dB)
D7
D6
D5
D4
+14
1
1
1
1
+12
1
1
1
0
+10
1
1
0
1
+8
1
1
0
0
+6
1
0
1
1
+4
1
0
1
0
+2
1
0
0
1
0
1
0
0
0
0*
0
0
0
0
-2
0
0
0
1
-4
0
0
1
0
-6
0
0
1
1
-8
0
1
0
0
-10
0
1
0
1
-12
0
1
1
0
-14
0
1
1
1
*: Default Value
!MIDDLE (Select Address : 02H)
02H
Gain(dB)
D3
D2
D1
D0
+14
1
1
1
1
+12
1
1
1
0
+10
1
1
0
1
+8
1
1
0
0
+6
1
0
1
1
+4
1
0
1
0
+2
1
0
0
1
0
1
0
0
0
0*
0
0
0
0
-2
0
0
0
1
-4
0
0
1
0
-6
0
0
1
1
-8
0
1
0
0
-10
0
1
0
1
-12
0
1
1
0
-14
0
1
1
1
*: Default Value
– 11 –
NJW1201A
!BASS (Select Address : 03H)
03H
Gain(dB)
D7
D6
D5
D4
+17.5
1
1
1
1
+15
1
1
1
0
+12.5
1
1
0
1
+10
1
1
0
0
+7.5
1
0
1
1
+5
1
0
1
0
+2.5
1
0
0
1
0
1
0
0
0
0*
0
0
0
0
-2.5
0
0
0
1
-5
0
0
1
0
-7.5
0
0
1
1
-10
0
1
0
0
-12.5
0
1
0
1
-15
0
1
1
0
-17.5
0
1
1
1
*: Default Value
nd
!2
VOLUME (Select Address : 03H)
03H
Gain(dB)
D3
D2
D1
D0
0*
1
1
1
1
-2
1
1
1
0
-4
1
1
0
1
-6
1
1
0
0
-8
1
0
1
1
-10
1
0
1
0
-12
1
0
0
1
-14
1
0
0
0
-16
0
1
1
1
-18
0
1
1
0
-20
0
1
0
1
-22
0
1
0
0
-24
0
0
1
1
-26
0
0
1
0
-28
0
0
0
1
MUTE
0
0
0
0
*: Default Value
– 12 –
NJW1201A
!SOUND GAIN (Select Address : 04H)
SOUND GAIN
04H
D6
Gain Lo*
0
Gain Hi
1
*: Default Value
!Sound Enhancement Mode (Select Address : 04H)
SOUND MODE
04H
D5
D4
OFF*
0
0
ealaTreble
0
1
eala
1
0
eala & ealaTreble
1
1
*: Default Value
!Dynamic Bass Boost Gain (Select Address : 04H)
DBB GAIN
04H
D3
D2
OFF*
0
0
Gain 1
0
1
Gain 2
1
0
Gain 3
1
1
*: Default Value
! Dynamic Bass Boost Sense (Select Address : 04H)
DBB SENSE
04H
D1
D0
Sense 1*
0
0
Sense 2
0
1
Sense 3
1
0
Sense 4
1
1
*: Default Value
– 13 –
NJW1201A
!TERMINAL DESCRIPTION
No.
SYMBOL
FUNCTION
2
3
4
36
37
38
40
42
44
47
50
52
IN3A
IN2A
IN1A
IN1B
IN2B
IN3B
IN4B
IN5B
IN6B
IN6A
IN5A
IN4A
Ach Input3
Ach Input2
Ach Input1
Bch Input1
Bch Input2
Bch Input3
Bch Input4
Bch Input5
Bch Input6
Ach Input6
Ach Input5
Ach Input4
5
6
13
15
17
22
34
35
MonOutA
RecOutA
BPF1
BPF3
OutA
OutB
RecOutB
MonOutB
Ach Monitor Output
Ach Rec Output
Filter 1 for DBB
Filter 3 for DBB
Ach Output
Bch Output
Bch Rec Output
Bch Monitor Output
7
33
VOLInA
VOLInB
Ach 1 Volume Input
st
Bch 1 Volume Input
st
EQUIVALENT CIRCUIT
VOLTAGE
18.5k
V+ / 2
31.5k
FB
50
V+ / 2
9.3k
V+ / 2
15.7k
8
10
12
28
30
32
– 14 –
TONEHA
TONEM2A
TONEB2A
TONEB2B
TONEM2B
TONEHB
Ach Treble(Tone) Filter
Ach Middle(Tone) Filter 2
Ach Bass(Tone) Filter 2
Bch Bass(Tone) Filter 2
Bch Middle(Tone) Filter 2
Bch Treble(Tone) Filter
4k (PIN.8,32)
5.4k (PIN.10.30)
1.7k (PIN.12.28)
V+ / 2
NJW1201A
!TERMINAL DESCRIPTION
No.
SYMBOL
FUNCTION
EQUIVALENT CIRCUIT
9
11
29
31
TONEM1A
TONEB1A
TONEB1B
TONEM1B
Ach Middle(Tone) Filter 1
Ach Bass(Tone) Filter 1
Bch Bass(Tone) Filter 1
Bch Middle(Tone) Filter 1
V+ / 2
14
BPF2
Filter 2 for DBB
V+ / 2
16
23
VOL2CAPA
VOL2CAPB
Ach DC coupling for 2 Volume
nd
Bch DC coupling for 2 Volume
18
GND
ground
nd
50
VOLTAGE
5.4k
V+ / 2
-
0
– 15 –
NJW1201A
!TERMINAL DESCRIPTION
No.
SYMBOL
FUNCTION
EQUIVALENT CIRCUIT
VREG 5V
19
20
SDA
SCL
V+ 9V
4k
I2C DATA
I2C CLOCK
-
8k
21
V+
Supply Voltage
24
ExtSense
AGC Boost Level for DBB
VOLTAGE
SCL:GND
SDA:ACK
-
V+
50
V+ / 2
36k
0.5u
2k
25
– 16 –
INT
AGC Smoothing Filter for DBB
50
-
NJW1201A
!TERMINAL DESCRIPTION
No.
SYMBOL
FUNCTION
26
SurTC
Filter for Sound Mode
27
SRFil
Filter for Sound Mode
EQUIVALENT CIRCUIT
FB
FB
VOLTAGE
V+ / 2
16k
10k
16k
16k
V+ / 2
212k
45
VREF
Reference Voltage
V+ / 2
212k
46
IN6Diff
Negative Input for Input6
63k
V+ / 2
37k
– 17 –
– 18 –
1
2
3
4
5
6
7
13
15n
20
19
17
51
15
C21
25
C20
1u
24
4.7u
C17
21
R8
18
C15
4.7u
14
Low PassFilter terminal
for Dynamic Bass Boost
22
68n
C13
R6
23
47k
2
26
10k
R4
12
2.2u
11
I C
28
C11
2ndVolume (0 to -28dB,Mute 2dB step)
BAS
29
BPF1
220n
49
4.7k
16
BAS
MID
30
C10
47n
10
C9
MID
31
R3
22n
9
4.7k
8
C8
48
Sound Mode
&
DynamicBassBoost
TRE
41
32
4.7n
44
1stVolume (0 to -62dB,Mute 1dB step)
25k
42
33
C7
50
TRE
25k
0dB
50k
50k
50k
50k
34
R2
52
4.7n
INPUT(Ach)
0 to +30dB 2dB step
47
C6
4.7u
46
VOLIn Ach
C40
35
RecOut Ach
4.7u
0dB
C39
C4
4.7u
45
4.7u
C38
50k
4.7u
36
MonOut Ach
INPUT4 Ach
C37
4.7u
INPUT5 Ach
4.7u
37
INPUT1 Ach
INPUT6 Ach
+
50k
INPUT6 Diff
C36
4.7u
4.7u
40
50k
43
50k
4.7u
38
C3
4.7u
VREF
C34
50k
4.7u
39
C2
C1
INPUT6 Bch
C35
50k
INPUT5 Bch
C33
50k
INPUT4 Bch
50k
INPUT(Bch)
INPUT2 Ach
INPUT3 Ach
50k
4.7n
220n
47n
22n
4.7n
4.7n
4.7u
4.7u
4.7u
C22
C23
C24
C25
C26
C27
C29
C30
C31
C32
4.7k
R11
4.7k
R12
VOLIn Ach
RecOut Ach
MonOut Ach
INPUT1 Bch
INPUT2 Bch
INPUT3 Bch
NJW1201A
! TEST Circuit
Filter terminal
for Sound Mode
27
Filter terminal
for Sound Mode
AGC Smoothing Filter
for Dynamic Bass Boost
C18
ExtSense terminal.
4.7u
OUTPUT(Bch)
22u
V+
SCL
C16
SDA
R7
GND
C14
OUTPUT(Ach)
4.7u
NJW1201A
C22
220n
4.7n
R11
C23
C24
22n
47n
C25
C26
4.7k
V+
22u
R8
R7
SDA
GND
C15
BAS
9
10
11
4.7u
R6
12
C10
C9
R3
C8
R2
4.7k
C7
C6
R1
C5
C4
C3
INPUT1 Ach
C2
C14
75k
BAS
MID
8
OUTPUT(Ach)
4.7u
13
220n
7
C16
SCL
14
47n
6
22n
5
4.7n
4
4.7u
3
4.7n
0dB
50k
50k
2
4.7u
1
INPUT2 Ach
52
INPUT(Ach)
TRE
15
50k
4.7u
51
50k
+
17
16
4.7u
INPUT4 Ach
C40
OUTPUT(Bch)
18
50
C1
4.7u
INPUT3 Ach
INPUT5 Ach
+
C17
4.7u
25k
49
C39
C18
C13
48
19
ExtSense terminal.
Possible to unconnect
Band PassFilter terminal
for Dynamic Bass Boost
50k
47
C19
4.7u
R5
4.7u
20
C12
+
4.7u
220n
C38
R9
R4
5.6k
INPUT6 Ach
46
AGC Smoothing Filter
for Dynamic Bass Boost
3k
2
4.7u
I C
+
C20
21
C11
4.7u
C37
45
Filter terminal
for Sound Mode
1u
24
2ndVolume (0 to -28dB,Mute 2dB step)
4.7u
25
22
C21
68n
220n
INPUT6 Diff
+
26
4.7k
VREF
C36
44
0 to +30dB 2dB step
4.7u
50k
+
50k
C35
27
23
50k
43
INPUT6 Bch
28
2.2k
42
29
Sound Mode
&
DynamicBassBoost
4.7u
30
Filter terminal
for Sound Mode
25k
+
1stVolume (0 to -62dB,Mute 1dB step)
C34
31
MID
41
INPUT5 Bch
32
4.7k
R12
33
4.7n
4.7n
R10
C27
C28
C29
INPUT1 Bch
C30
C31
INPUT2 Bch
4.7u
34
TRE
40
35
0dB
4.7u
36
50k
+
37
50k
C33
38
50k
INPUT4 Bch
39
50k
INPUT(Bch)
4.7u
4.7u
C32
INPUT3 Bch
Application Circuit
50k
!
– 19 –
NJW1201A
■ APPLICATION NOTE
[1] Input Selector
(1-1) Single ended stereo Inputs
All single ended inputs (pin.2,3,4,36,37,38,40,42,44,47,50,52) have an input impedance of 50kΩ.
(1-2) Differential Input
In6A(pin.47)/In6B(pin.44) can use as single-ended input or differential input.
In case of differential input, In6A/In6B are positive input have an input impedance of 50kΩ.
And In6diff(pin.46) is negative input terminal has an input impedance of 50kΩ.
To improve CMRR at input, please connect the same value of coupling capacitor to In6A/In6B/In6diff.
[2] Monitor out(pin.5,35), Rec out(pin6,34), VOLIn(pin.7,33)
R2=26.5k
Hi-path filter (Sallen-Key) can be made up with these terminals.
MonitorOut(PIN:5,35)
RecOut(PIN:6,34)
VOLIn(PIN:7,33)
R1
C1
– 20 –
C2
f0 =
1
2π R1R2C1C2
Q=
C1C2
C1 + C2
R2
R1R2C1C2
NJW1201A
■ APPLICATION NOTE
[3] TONE control
(a)Bass
(a-1)Boost
(a-2)Cut
IN
OUT
R2
R1
TONE-B2(PIN:12,28)
C1
Q=
1
2π ( R1 + R 2) ∗ R3 ∗ C1 ∗ C 2
R2
TONE-B1(PIN:11,29)
TONE-B2(PIN:12,28)
C1
R3
f0 =
OUT
R1
TONE-B1(PIN:11,29)
C2
IN
C2
R3
(Hz)
( R1 + R 2) ∗ R3 ∗ C1 ∗ C 2
R 2 ∗ C 2 + R3 ∗ (C1 + C 2)
G 0 = ±20 Log
(R1 + R 2 + R 3) ∗ C 2 + R3 ∗ C1
R 2 ∗ C 2 + R 3 ∗ (C1 + C 2 )
(dB)
Table.a-1 : Internal resistance in each Gain.
Gain
±17.5dB
±15dB
±12.5dB
±10dB
±7.5dB
±5dB
±2.5dB
±0dB
R1
48.3kΩ
45.8kΩ
42.5kΩ
38.1kΩ
32.2kΩ
24.4kΩ
13.9kΩ
0Ω
R2
1.7kΩ
4.2kΩ
7.5kΩ
11.9kΩ
17.8kΩ
25.6kΩ
36.1kΩ
50kΩ
– 21 –
NJW1201A
(b)Middle
(b-1)Boost
(b-2)Cut
IN
OUT
R2
IN
R1
TONE-M2(PIN:10,30)
R1
TONE-M1(PIN:9,31)
C2
C1
Q=
1
2π ( R1 + R 2) ∗ R3 ∗ C1 ∗ C 2
Gain
±14dB
±12dB
±10dB
±8dB
±6dB
±4dB
±2dB
±0dB
– 22 –
R1
44.6kΩ
41.7kΩ
38.1kΩ
33.6kΩ
27.8kΩ
20.6kΩ
11.5kΩ
0Ω
R2
5.4kΩ
8.3kΩ
11.9kΩ
16.4kΩ
22.2kΩ
29.4kΩ
38.5kΩ
50kΩ
C2
R3
(Hz)
(R1 + R 2 + R 3) ∗ C 2 + R3 ∗ C1
R 2 ∗ C 2 + R 3 ∗ (C1 + C 2 )
Table.a-1 : Internal resistance in each Gain.
TONE-M2(PIN:9,31)
C1
( R1 + R 2) ∗ R3 ∗ C1 ∗ C 2
R 2 ∗ C 2 + R3 ∗ (C1 + C 2)
G 0 = ±20 Log
R2
TONE-M1(PIN:10,30)
R3
f0 =
OUT
(dB)
NJW1201A
(c)Treble
(c-1)Boost
(c-2)Cut
IN
OUT
R2
IN
OUT
R1
R1
TONE-H(PIN:8,32)
R2
TONE-H(PIN:8,32)
C1
C1

R1
1
G V = ± 20 Log 1 +
×
2
R2

1 + (1 / (2π × f × C 1 × R 2 ))



(dB)
Table.a-1 : Internal resistance in each Gain.
Gain
±14dB
±12dB
±10dB
±8dB
±6dB
±4dB
±2dB
±0dB
R1
22kΩ
20.2kΩ
18.4kΩ
16.1kΩ
13.3kΩ
9.8kΩ
5.5kΩ
0Ω
R2
4kΩ
5.8kΩ
7.6kΩ
9.9kΩ
12.7kΩ
16.2kΩ
20.5kΩ
26kΩ
– 23 –
NJW1201A
■ APPLICATION NOTE
[4] Sound Mode
Filter terminal
for Sound Mode
SurTC (pin.26) C21
Sound-Output Ach
Sound-Intput Ach
A
*Hi
*Lo
Sound
Filter
*ealaRebirth
*eala
*ealaRebirth & eala
Sound-Intput Bch
Sound-Output Bch
SRFil (pin.27)
C22
Filter terminal
for Sound Mode
There are 3 sound modes in NJW120A.
1) ealaRebirth
:This is a sound effect, this is suitable for compressed Audio.
2) eala
:This is a comfortable surround that makes much of sound location.
3) ealaRebirth & eala :This is a sound effect that be suitable for various music.
These sound modes have 2-level gain effects.
Sound modes and 2-level gain are switched by I2C command.
And, Frequency effects of sound mode depends on C21,C22.
Please choose your suitable value of C21,C22 for Audio set.
Recommendation is C21=68nF, C22=4.7nF.
Frequency Response of Sound mode is shown in next page.
Regarding Pop noise reduction when sound mode and sound gain switched
NJW1201A doesn’t cover about this.
*Notice: About NJW1201
Regarding Pop noise reduction when sound mode and sound gain switched,
*Sound mode swtiched: Pop noise reduction is cared by capacitor pin.26
*Sound gain switched: Pop noise reduction is not cared
– 24 –
NJW1201A
Gain vs Frequency (ealaRebirth)
Gain vs Frequency (ealaRebirth)
V+=9V, Vin(Ach)=0.1Vrms, Vo(Ach), Ta=25oC
V+=9V, Vin(Ach)=0.1Vrms, Vo(Ach), Ta=25oC
10
10
C21:Sweep , C22=4.7nF
C21:68nF , C22=Sweep
10nF
47n,68n,100n,150nF
6.8nF
Gain (dB)
5
Gain (dB)
5
0
0
3.3nF
4.7nF
-5
-5
10
100
1000
10000
100000
10
100
Frequency (Hz)
1000
10000
100000
Frequency (Hz)
Gain vs Frequency (eala)
Gain vs Frequency (eala)
V+=9V, Vin(Ach)=0.1Vrms, Vo(Ach), Ta=25oC
V+=9V, Vin(Ach)=0.1Vrms, Vo(Ach), Ta=25oC
10
10
C21:Sweep , C22=4.7nF
C21:68nF , C22=Sweep
150nF
100nF
4.7nF
5
3.3nF
Gain (dB)
Gain (dB)
5
0
0
47nF
10nF
68nF
-5
6.8nF
-5
10
100
1000
10000
100000
10
100
Frequency (Hz)
1000
10000
100000
Frequency (Hz)
Gain vs Frequency (eala+ealaRebirth)
Gain vs Frequency (eala+ealaRebirth)
V+=9V, Vin(Ach)=0.1Vrms, Vo(Ach), Ta=25oC
V+=9V, Vin(Ach)=0.1Vrms, Vo(Ach), Ta=25oC
10
10
C21:Sweep , C22=4.7nF
C21:68nF , C22=Sweep
150nF
4.7nF
100nF
Gain (dB)
5
Gain (dB)
5
3.3nF
0
0
10nF
47nF
6.8nF
68nF
-5
-5
10
100
1000
Frequency (Hz)
10000
100000
10
100
1000
10000
100000
Frequency (Hz)
– 25 –
NJW1201A
■ APPLICATION NOTE
[5] Dynamic Bass Boost (DBB)
5-1. Block diagram of DBB
INT(pin.25)
Sound-Intput Ach
Sound-Output Ach
EXT Filter (inverting type)
AGC
A
3-levels
A=1, 0.6, 0.33
Normally
Gain=1
Sound-Intput Bch
Sound-Output Bch
BPF3(pin.15)
BPF2(pin.14)
BPF1(pin.13)
Dynamic Bass Boost (DBB) is a system that changes boost gain by changing of input level.
The boost gain has 3-levels, this is controlled by I2C.
AGC circuit changes the boost gain by detecting the input signal.
5-2.Setting of EXT Filter
The Frequency Response of DBB can be changed in EXT Filter.
EXT Filter is composed of BPF1(pin.13), BPF2(pin.14), BPF3(pin.15).
Below are examples of filter structure.
a) BPF
 R 
GV = 20 log 3 
 2 R2 
EXT Filter (inverting type)
R1
– 26 –
14
15
R3
C
C
BPF3:Output
R2
BPF2
DC Cut
BPF1
13
fc =
1
2πC (R1 // R2 )R3
Q=
1
R3
2 R1 // R2
NJW1201A
b) LPF (-6dB/Oct)
EXT Filter (inverting type)
R 
GV = 20 log 2 
 R1 
fc =
14
15
R2
R1
BPF3:Output
BPF2
BPF1
13
1
2πCR2
C
c) LPF (-12dB/Oct)
EXT Filter (inverting type)
R 
GV = 20 log 3 
 R1 
fc =
R2
14
C2
R3
15
BPF3:Output
BPF2
R1
BPF1
13
1
2π C1C2 R2 R3
C1
5-3. DBB INT
external Capacitor connected to pin.25 decides Attack/Recovery time of DBB.
Recovery time (s) = 0.5 X C(uF)
(test condition : Vin(Ach+Bch)=2Vrms, Sense Level = 4 )
Recovery time (C=4.7uF)
Vin=2 → 0.2Vrms f=70Hz
– 27 –
NJW1201A
5-4. Detective level in DBB
Detective level of input signal in DBB is control by I2C or external resistor (Rsense:pin.24).
In case of without external resistor, Detective level is shown in below Fig5-4-1, 5-4-2.
Fig5-4-1 is Output Voltage vs Input Voltage when detective level is changed (Gain setting = 3).
Fig5-4-2 is Output Voltage vs Input Voltage when Gain setting is changed (Sense level = 4).
These figures don’t include the external Resistor (Rsense:pin.24).
Output vs Input Voltage (DBB SenseLevel sw eep)
Output vs Input Voltage (DBB GainLevel sw eep)
V+=9V, DBB=GAIN3, Vin(A+Bch), f=70Hz
V+=9V, Sense=Sense4, Vin(A+Bch), f=70Hz
o
Vout=Ach, Ta=25oC
Vout=Ach, Ta=25 C
10
10
Sense1
1
Sense2
Output Voltage (Vrms)
Output Voltage (Vrms)
1
Sense3
0.1
Sense4
0.01
0.001
0.001
Gain3
0.1
Gain2
Gain1
0.01
0.01
0.1
Input Voltage (Vrms)
1
10
0.001
0.001
0.01
0.1
1
10
Input Voltage (Vrms)
Regarding Detective Level (sense level), internal resistance is switched by I2C.
This resistance decides detective level.
1. Sense 1 = 36kΩ
2. Sense 2 = 9kΩ
3. Sense 3 = 5.2kΩ
4. Sense 4 = 3.6kΩ
And, if connect the external resistor (Rsense:pin.24), Detected level is shown in below equations.
1. Sense 1 = 36kΩ // Rsense
2. Sense 2 = 9kΩ // Rsense
3. Sense 3 = 5.2kΩ // Rsense
4. Sense 4 = 3.6kΩ // Rsense
– 28 –
NJW1201A
■ APPLICATION NOTE
[6] 2
nd
Volume
nd
2 Volume range is 0dB to –28dB with –2dB steps.
nd
Frequency response of 2 Volume depends on capacitor connected to VOL2CAP(pin.16,23).
nd
nd
nd
It shows frequency response of 2 Volume in Fing.6-1(2 Volume=-28dB), Fig6-2(2 Volume=MUTE).
To flat the frequency response, please choose bigger capacitor.
Gain vs Frequency
Gain vs Frequency
(2nd Volume)
0
0
2ndVOL=MUTE
C=1uF
-10
-20
2ndVOL=MUTE
C=4.7uF
-30
2ndVOL=MUTE
C=10uF
-40
2ndVOL=MUTE
C=1uF
-40
Gain (dB)
-20
Gain (dB)
(2nd Volume)
V+=9V, 2ndVOL=MUTE, Vin=1Vrms, Ta=25oC
V+=9V, 2ndVOL=-28dB, Vin=1Vrms, Ta=25oC
-60
2ndVOL=MUTE
C=4.7uF
2ndVOL=MUTE
C=10uF
-80
-50
1st&2ndVOL=MUTE
-100
-60
-120
10
100
1000
10000
100000
10
100
1000
Frequency (Hz)
10000
100000
Frequency (Hz)
Fig.6-1
Fig.6-2
But, when power turns on, it takes some charge time to VOL2CAP(pin.16.23)
nd
If 2 Volume is switched on charge, Pop noise occurs.
The cause of pop noise is gap of Voltage between Vref and VOL2CAP.
To be fast the charge time, connect smaller capacitor to VOL2CAP.
DC Voltage vs time
DC Voltage vs time
(2nd Volume)
8
7
7
8
VOL2CAP=10uF
VOL2CAP=4.7uF
7
6
6
Vref
4
Vdc at VOL2CAP
3
5
Vref
DC Voltage (V)
DC Voltage (V)
DC Voltage (V)
6
4
Vdc at VOL2CAP
3
5
3
2
2
1
1
1
0
0.5
1
1.5
time (s)
Fig.6-3.VOL2CAP=1uF
2
0
-0.5
0
0.5
1
1.5
time (s)
Fig.6-4.VOL2CAP=4.7uF
2
Vref
4
2
0
-0.5
(2nd Volume)
V+=0 ---> 9V, Ta=25oC
8
VOL2CAP=1uF
5
DC Voltage vs time
(2nd Volume)
V+=0 ---> 9V, Ta=25oC
V+=0 ---> 9V, Ta=25oC
0
-0.5
Vdc at VOL2CAP
0
0.5
1
1.5
2
time (s)
Fig.6-4.VOL2CAP=10uF
– 29 –
NJW1201A
[CAUTION]
The specifications on this databook are only
given for information , without any guarantee
as regards either mistakes or omissions. The
application circuits in this databook are
described only to show representative usages
of the product and not intended for the
guarantee or permission of any right including
the industrial rights.
– 30 –