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PDF MS6274 Data sheet ( Hoja de datos )
| Número de pieza | MS6274 | |
| Descripción | Stereo Audio Volume Controller | |
| Fabricantes | MOSA | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de MS6274 (archivo pdf) en la parte inferior de esta página. Total 19 Páginas | ||
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MOSA
MS6274
Volume Controller with soft step IC
Stereo Audio Volume Controller With Soft Steps,
4 Stereo(1 quasi-differential) Inputs,
Low voltage, Gain/Loss, Low power consumption.
FEATURES
‧ Operation range: 2.5V~6.5V.
‧ One quasi-differential input.
‧ Input Gain: 0dB ~ +15dB.
‧ Soft step volume control：-79dB ~ +15dB.
‧ Low power consumption.
‧ Good PSRR and low pop noise.
‧ I2C interface.
‧ Housed in 16 pin SSOP packages.
APPLICATIONS
‧ Multimedia system
‧ Hi-Fi audio system.
‧ Bluetooth.
‧ DAB
DESCRIPTION
The MS6274 is a stereo audio volume controller IC with 4 sets of stereo inputs(1 quasi-differential Input). It has
Input gain(0 ~ +15dB), Soft step volume control(-79dB ~ +15dB) with programmable blend times. It uses CMOS
technology specially for the low voltage application with low noise, rail-to-rail output.
BLOCK DIAGRAM
MS6274
L-IN1
L-IN2
L-IN3
L-IN4/DiffL
NC/DiffG
R-IN4/DiffR
R-IN3
R-IN2
R-IN1
INPUT
Mux
Gain 0dB ~ 15dB
Input Gain
-79dB ~ +15dB
Volume/Mute
(With Soft step)
Input Gain
Gain 0dB ~ 15dB
Volume/Mute
(With Soft step)
-79dB ~ +15dB
L-OUT
R-OUT
Supply
I2C Interface
VDD GND VREF
SDA
SCL
V1.5
1/19 www.mosanalog.com
1 page  
MOSA
TYPICAL PERFORMANCE CHARACTERISTICS
(Ta=25℃, RL=10k, CREF = 1uF; unless otherwise specified)
f=20Hz
f=1kHz
f=20kHz
f=20Hz
f=1kHz
f=20kHz
MS6274
Volume Controller with soft step IC
f=20Hz
f=1kHz
f=20kHz
VDD=5V
OUTPUT VOLTAGE (dBV)
THD+N vs. output voltage
VDD=3.3V
OUTPUT VOLTAGE (dBV)
THD+N vs. output voltage
VDD=2.5V
OUTPUT VOLTAGE (dBV)
THD+N vs. output voltage
VDD=2.5V , Vo = -3dBV
VDD=3.3V , Vo = -3dBV
VDD=5V , Vo = 0dBV
VDD=5V
VDD=3.3V
FREQUENCY (Hz)
THD+N vs. frequency
CAP=10uF
CAP=1uF
FREQUENCY (Hz)
CMRR vs. frequency
CAP=10uF
CAP=1uF
FREQUENCY (Hz)
Channel separation vs. frequency
CAP=10uF
CAP=1uF
VDD = 5V
VRR =-20dBV
FREQUENCY (Hz)
PSRR vs. frequency
VDD = 3.3V
VRR =-20dBV
FREQUENCY (Hz)
PSRR vs. frequency
VDD = 2.5V
VRR =-20dBV
FREQUENCY (Hz)
PSRR vs. frequency
V1.5
5/19 www.mosanalog.com
5 Page 
MOSA
MS6274
Volume Controller with soft step IC
Example
Soft-step Time 10.24ms , Soft-step ON , Single-ended Mode.
MSB
LSB
Data byte
Data byte
Start 1 0 0 0 1 0 0 0 ACK 0 0 0 0 0 0 0 0 ACK 1 0 0 0 0 1 0 0 ACK Stop
MS6274 address
SubAddress
Soft-step Time 10.24ms
Soft-step ON
Single-ended Mode
Set the 1/2VDD , All device active.
MSB
LSB Data byte
Data byte
Start 1 0 0 0 1 0 0 0 ACK 0 0 0 0 0 1 1 1 ACK 0 0 0 0 0 0 0 1 ACK Stop
MS6274 address
SubAddress
Set the 1/2VDD
All device active
Set Input gain of both channels at +4dB , select Input as IN1.
MSB
LSB Data byte
Data byte
Start 1 0 0 0 1 0 0 0 ACK 0 0 0 0 0 0 1 1 ACK 0 0 0 0 0 1 0 0 ACK Stop
MS6274 address
SubAddress
Both-channels , IN1 , +4dB
Set Volume of both-channels at -15dB
MSB
LSB
Start 1 0 0 0 1 0 0 0 ACK
Data byte
00000110
ACK
Data byte
00011111
ACK
Stop
MS6274 address
SubAddress
Both-channels , -15dB
V1.5
11/19
www.mosanalog.com
11 Page | ||
| Páginas | Total 19 Páginas | |
| PDF Descargar | [ Datasheet MS6274.PDF ] | |
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