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PDF NJW1157B Data sheet ( Hoja de datos )
| Número de pieza | NJW1157B | |
| Descripción | Electronic Volume | |
| Fabricantes | JRC | |
| Logotipo |  |
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NJW1157B
8-CHANNEL ELECTRONIC VOLUME WITH INPUT SELECTOR
s GENERAL DESCRIPTION
NJW1157B is an eight channel electronic volume
IC. It includes Input selector, tone control, volume,
mute, input selector gain control, volume output gain
control and 5 REC outputs. It’s suitable for
multi-channel audio equipments such as AV
receivers and DVD receivers. These functions are
controlled by three-wired serial data.
s PACKAGE OUTLINE
NJW1157BFC2
s FEATURES
q Operating Voltage
q Three-Wired Serial Data Control
q Input Selector (x 12)
q REC Output (x 5) with Selector
q Input Selector Gain Control
q Volume Output Gain Control
q Volume
q Tone Control
q Subwoofer output addition to L, R channel output
q Subwoofer output ON/OFF control
q Bi-CMOS Technology
q Package Outline
±4.5 to ±7.5V
Gain : 0/-3/-6/-9/-12dB
Gain : 0/+3/+6/+9/+12/+15/+18dB
0 to -100dB/1dBstep, MUTE
0 to ±10dB/1dBstep
QFP100 – C2
s BLOCK DIAGRAM
LAIN
RAIN
CAIN
LSAIN
RSAIN
LBAIN
RBAIN
SWAIN
L1IN
R1IN
L2IN
R2IN
L3IN
R3IN
L4IN
R4IN
L5IN
R5IN
L6IN
R6IN
L7IN
R7IN
L8IN
R8IN
L9IN
R9IN
L10IN
R10IN
L11IN
R11IN
L12IN
R12IN
DCLA1 DCLA2
DCRA1 DCRA2
Att Gain
Att Gain
Multi-channel
Volume
TONE
TONE
Supply
Voltage
µCOM
Interface
TSW
SW
SW
V+
GND
V-
LATCH
DATA
CLOCK
LOUT
ROUT
COUT
LSOUT
RSOUT
LBOUT
Amp
Gain
BSW
SSW
RBOUT
SWOUT
Input Selector
REC Out Selector
Multi-Channel Input B
–1–
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! TERMINAL DESCRIPTION
PIN SYMBOL
NO.
FUNCTION
1 LOUT Lch Output
2 ROUT Rch Output
3 COUT Cch Output
4 LSOUT LSch Output
5 RSOUT RSch Output
6 LBOUT LBch Output
7 RBOUT RBch Output
8 SWOUT SWch Output
NJW1157B
EQUIVALENT CIRCUIT
V+
TERMINAL
DC
VOLTAGE
V- (SUB)
0
V+
34.2K
0
V- (SUB)
9 DC_R1 Rch Bass filter DC cut capacitor output terminal
13 DC_L1 Lch Bass filter DC cut capacitor output terminal
10 DC_R2 Rch Bass filter DC cut capacitor input terminal
14 DC_L2 Lch Bass filter DC cut capacitor input terminal
V+
10 40
0
V- (SUB)
25K
V+
25K
7K
10.25K
V- (SUB)
0
–5–
5 Page 
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NJW1157B
! CONTROL DATA FORMAT
REQ
t7
t1
t2 t3
t4 t8
SCK
DATA
MSB
LSB
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
(✴) MSB First
t5 t6
SYMBOL
t1
t2
t3
t4
t5
t6
t7
t8
PARAMETER
SCK Clock Width
SCK Pulse Width (High)
SCK Pulse Width (Low)
REQ Rise Hold Time
DATA Setup Time
DATA Hold Time
SCK Setup Time
REQ High Pulse Width
MIN TYP MAX UNIT
2 - - µs
0.8 - - µs
0.8 - - µs
1.6 - - µs
0.8 - - µs
0.8 - - µs
0.8 - - µs
1.6 - - µs
– 11 –
11 Page | ||
| Páginas | Total 23 Páginas | |
| PDF Descargar | [ Datasheet NJW1157B.PDF ] | |
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