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PDF PA3312 Data sheet ( Hoja de datos )
| Número de pieza | PA3312 | |
| Descripción | DUAL 2.6W AUDIO POWER AMPLIFIER | |
| Fabricantes | Unisonic Technologies | |
| Logotipo |  |
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UNISONIC TECHNOLOGIES CO., LTD
PA3312
DUAL 2.6W AUDIO POWER
AMPLIFIER WITH FOUR
SELECTABLE GAIN SETTINGS
AND INPUT-MUX CONTROL
DESCRIPTION
The UTC PA3312 is a monolithic integrated circuit that stereo
bridged audio power amplifiers capable of producing 2.6W into 3Ω
with less than 10% THD+N or 1W into 8Ω with less than 0.65%
THD+N. This device minimizes the number of external components
needed, simplifying the design, and freeing up board space for
other features. Both of the depop circuitry and the thermal
shutdown protection circuitry are integrated in UTC PA3312, that
reduce pops and clicks noise during power up or shutdown mode
operation .
Amplifier gain is internally configured and controlled by way of
two terminals (GAIN0 and GAIN1). BTL gain setting of 6 dB, 10 dB,
15.6dB, 21.6dB (inverting) are provided, whereas SE gain is
always configured as 4.1dB for headphone drive. A MUX control
terminal (HP/LINE) allows selection between the two sets of stereo
input signals. To simplify the audio system design, UTC PA3312
combines a stereo bridge-tied loads (BTL) mode for speaker drive
and a stereo single-end (SE) mode for headphone drive into a
single chip, where both modes are easily switched by the SE/BTL
input control pin signal.
FEATURES
* Low operating current with 10mA
* Compatible with pc 99 desktop line-out into 10KΩ load
* Internal gain control ,which eliminates external gain-setting
resistors
* 2.6w per channel output power into 3Ω at 5V , BTL mode
* Input MUX select terminal
* Pc-beep input
* Improves depop circuitry to eliminate turn-on and turn-off
transients in output
* Fully differential input
CMOS IC
www.unisonic.com.tw
Copyright © 2015 Unisonic Technologies Co., Ltd
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PA3312
CMOS IC
ABSOLUTE MAXIMUM RATING
Over operating free-air temperature range (unless otherwise specified)
PARAMETER
SYMBOL
RATINGS
UNIT
Supply Voltage
Input Voltage
VDD 6 V
VIN -0.3~VDD ~+0.3 V
Power Dissipation
Operating Junction Temperature
PD
TOPR
Internally limited
-40 ~ +85
°C
Storage Temperature
TSTG
-65 ~ +85
°C
Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
RECOMMENDED OPERATING CONDITIONS
PARAMETER
Supply Voltage
High-Level Input Voltage
Low-Level Input Voltage
Operating Free-Air Temperature
SYMBOL
TEST CONDITIONS
VDD
VIH
SE/BTL, HP/LINE, GAIN0, GAIN1
SHUTDOWN
SE/BTL, HP/LINE
VIL GAIN0, GAIN1
SHUTDOWN
TA
MIN
4.5
0.8×VDD
2
-40
MAX
5.5
0.6×VDD
0.4×VDD
0.8
85
UNIT
V
V
V
°C
OPERATING CHARACTERISTICS (VDD = 5 V, TA = 25°C, RL = 8Ω , Gain = 6 dB, BTL mode)
PARAMETER
SYMBOL
TEST CONDITIONS
Output Power
POUT RL = 3Ω
THD+N=10%
THD+N=1%
Total Harmonic
Noise
Distortion
Plus TDH+N POUT = 1 W, f = 20 Hz ~ 15 kHz
Maximum Output Power Bandwidth BOM THD = 5%
Supply Ripple Rejection Ratio
Signal-to-Noise Ratio
RR f = 1 kHz, CB = 0.47 μF BTLmode
SNR
Noise Output Voltage
eN
CB=0.47μF,
BTLmode
f=20Hz ~ 20KHz SE mode
MIN
TYP
2.6
2.05
0.65%
>15
72
105
20
18
MAX
UNIT
W
KHz
dB
dB
μVRMS
ELECTRICAL CHARACTERISTICS
(TA = 25°C, VDD = 5 V, unless otherwise specified)
PARAMETER
SYMBOL
TEST CONDITIONS
Output Offset Voltage (Measured
Differentially)
|VO(OFF)|
VIN = 0, AV = 6 dB
Power Supply Rejection Ratio
High-Level Input Current
PSRR
|IIH|
VDD = 4.5 V ~ 5.5 V
VDD = 5.5 V, VIN = VDD
Low-Level Input Current
Supply Current
|IIL| VDD = 5.5 V, VIN = 0 V
IDD
BTL mode
SE mode
Supply Current, Shutdown Mode
IDD(SD)
MIN TYP MAX UNIT
25 mV
77 dB
1 μA
1 μA
6
3
10
5
mA
150 300
μA
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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PA3312
CMOS IC
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet PA3312.PDF ] | |
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