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PDF YAC520 Data sheet ( Hoja de datos )
| Número de pieza | YAC520 | |
| Descripción | High Grade Volume Control | |
| Fabricantes | YAMAHA CORPORATION | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de YAC520 (archivo pdf) en la parte inferior de esta página. Total 16 Páginas | ||
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YAC520
HGVC1
High Grade Volume Control
s Outline
YAC520(HGVC1) is a high grade stereophonic digital volume for high end audio system.
www.DataShIsetteeptp4rsoUvw.icdiotehms w0.i5dedBdypnearmsitcerpa.nTgheeanudseloowf
distortion as
16 bit serial
well,
data
and can control individual channels in 256
interface allows daisy chain connection of
several devices for multi channel system.
Zero Crossing Detection function suppresses audible noise at quick change of the volume.
YAC520 operates on a single 5 volt power supply, and it is possible to input signal of up to 7.9Vrms by
using three types of connection methods.
Development evaluation board, DMB-HGVC1, equipped with PC interface is available.
s Features
q Wide volume range
(can be used in three ways)
q Adjustment step
q Gain Error
q Low distortion factor
q Low residual noise
A: +32.0 to – 95.0dB IN1=IN2
(Input < 2.0Vrms @VDD=5V)
B: +29.5 to – 97.5dB IN2=GND (Input < 2.6Vrms @VDD=5V)
C: +20.0 to – 107.0dB IN1=GND (Input < 7.9Vrms @VDD=5V)
adjustable in 256 steps, with 0.5dB per step
± 0.1dB
0.001% (input=150 mVrms, gain=+16dB)
1 µVrms (gain=- )
s Others
Process
Package
Power supply voltage
Operating temperature
Power consumption
CMOS process
20 SSOP (YAC520-E)
5V
0 to +70 ºC
100 mW @VDD=5.0 V
YAC520 CATALOG
CATALOG No.: LSI-4AC520A4
2001.12
1 page  
YAC520
s Description of analog functions
• Maximum input voltage
As described in the following figure, the maximum amplitude of signal that can be inputted varies
according the method of the use of L(R) IN1 and 2 pins. The method A makes the maximum
amplitude of the input signal approximately 2 Vrms, the method B makes it approximately 2.6 Vrms,
and the method C makes it approximately 7.9 Vrms. The use of the method B or C allows to input
signal exceeding the power supply voltage.
Note that the gain setting range for the method B is reduced by 2.5 dB from the one for the method A,
and 12 dB for the method C.
L(R) IN1 Ri(1)
Rf
L(R) IN2
Ri(2)
••••
-
+
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VREF
L(R)OUT
MethodA: IN1=IN2 Gain range (+32 dB to –95 dB)
Maximum input voltage: 2 Vrms
L(R) IN1
L(R) IN2
Ri(1)
Ri(2)
Rf
••••
-
+
L(R)OUT
VREF
MethodB: IN2=GND Gain range (+29.5 dB to –97.5 dB)
Maximum input voltage: 2.6 Vrms
L(R) IN1
L(R) IN2
Ri(1)
Ri(2)
Rf
••••
-
+
L(R)OUT
VREF
MethodC: IN1=GND Gain range (+20 dB to –107 dB)
Maximum input voltage: 7.9 Vrms
• VREF (analog reference voltage) stabilization time and DC bias initialization time
The time required for stabilization of VREF pin voltage after power on moment varies according to
the capacitance of the capacitor connected to VREF pin. Connecting a capacitor of 10 µF makes the
time constant 30 ms (typ.). Note that the serial interface becomes invalid in this period, tPUP.
As shown in the following figure, making ICN terminal “low” sets the DC bias forcibly with SW in the
LSI.
Since the time constant of L(R) IN1 and 2 pins becomes approximately 300 ms (typ.) when a
capacitor of 100 µF is used as the coupling capacitors (Ci1, 2), control ICN according to the capacitor
that is connected.
Ci1 L(R) IN1 Ri1=0.98kΩ
Audio
Source
L(R) IN2
Ci2 Ri2=2.94kΩ
SW
Rsw= 80Ω (typ)
Rf=29.3kΩ
ICN
L(R)OUT
-
+
VREF
Gain setting after power on = -
5
5 Page 
YAC520
s Example of System Configuration (1)
A type (+32.0 to – 95.0dB)
LIN1=LIN2
RIN1=RIN2
Audio
Source
+
+
100µF
100µF
Digital
Controller
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11 LIN1
AVSS 10
12 LIN2
LOUT 9
13 AVSS
VREF 8
14 RIN2
ROUT 7
15 RIN1
AVDD 6
16 TE
AVSS 5
17 ICN
DVSS 4
18 ZCEN
DVDD 3
19 CSN
SDATAO 2
20 SDATAI SCLK 1
10µF
10µF 220
10µF 220
+5v
0.1µF 47µF
4.7
Audio
Output
Lch
Audio
Output
Rch
0.1µF 47µF
47k
HGVC1(SDATAI)
or
Controller
B type (+29.5 to – 97.5dB)
LIN2=GND
RIN2=GND
SDATAO is high impedance state
when CSN is high.
Audio
Source
+
+
Digital
Controller
100µF
100µF
33µF
33µF
11 LIN1
AVSS 10
12 LIN2
LOUT 9
13 AVSS
VREF 8
14 RIN2
ROUT 7
15 RIN1
AVDD 6
16 TE
AVSS 5
17 ICN
DVSS 4
18 ZCEN
DVDD 3
19 CSN
SDATAO 2
20 SDATAI SCLK 1
10µF
10µF 220
10µF 220
+5v
0.1µF 47µF
4.7
Audio
Output
Lch
Audio
Output
Rch
0.1µF 47µF
47k
HGVC1(SDATAI)
or
Controller
Audio
Source
+
+
Digital
Controller
33µF
33µF
100µF
100µF
C type (+20.0 to – 107.0dB)
LIN1=GND
RIN1=GND
SDATAO is high impedance state
when CSN is high.
11 LIN1
AVSS 10
12 LIN2
LOUT 9
13 AVSS
VREF 8
14 RIN2
ROUT 7
15 RIN1
AVDD 6
16 TE
AVSS 5
17 ICN
DVSS 4
18 ZCEN
DVDD 3
19 CSN
SDATAO 2
20 SDATAI SCLK 1
10µF
10µF 220
10µF 220
+5v
0.1µF 47µF
4.7
Audio
Output
Lch
Audio
Output
Rch
0.1µF 47µF
47k
HGVC1(SDATAI)
or
Controller
SDATAO is high impedance state
when CSN is high.
11
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet YAC520.PDF ] | |
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