UTC-IC PA6021

UNISONIC TECHNOLOGIES CO., LTD
PA6021
CMOS IC
2-W STEREO AUDIO POWER
AMPLIFIER WITH ADVANCED
DC VOLUME CONTROL
„
DESCRIPTION
The PA6021 is a stereo audio power amplifier that drives 2
W/channel of continuous RMS power into a 4-Ω load when utilizing a
heat sink. Advanced dc volume control minimizes external
components and allows BTL (speaker) volume control and SE
(headphone) volume control.
The 20-pin DIP package allows for the use of a heatsink which
provides higher output power.
To ensure a smooth transition between active and shutdown
modes, a fade mode ramps the volume up and down.
„
DIP-20
Lead-free:
PA6021L
Halogen-free: PA6021G
FEATURES
* 2 W Into 4-W speakers with external heatsink
* DC volume control with 2-dB
* Steps from -40 dB ~ 20 dB
* – Fade Mode
* – -85-dB Mute Mode
* Differential Inputs
* 1-µA Shutdown Current (Typical)
* Headphone Mode
„
ORDERING INFORMATION
Normal
PA6021-D20-T
Ordering Number
Lead Free Plating
PA6021L-D20-T
www.unisonic.com.tw
Copyright © 2008 Unisonic Technologies Co., Ltd
Halogen Free
PA6021G-D20-T
Package
Packing
DIP-20
Tube
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PA6021
„
„
CMOS IC
PIN CONFIGURATION
PGND
1
20
ROUT+
ROUT-
2
19
SE/BTL
PVDD
3
18
VOLUME
RIN+
4
17
AGND
RIN-
5
16
BYPASS
VDD
6
15
FADE
LIN-
7
14
SHUTDOWN
LIN+
8
13
NC
PVDD
9
12
LOUT+
LOUT-
10
11
PGND
PIN DESCRIPTION
PIN #
PIN NAME
I/O
16
BYPASS
I
15
FADE
I
17
7
8
10
12
13
1,11
3,9
5
4
2
20
AGND
LINLIN+
LOUTLOUT+
NC
PGND
PVDD
RINRIN+
ROUT-
I
I
O
O
ROUT+
I
I
O
O
19
SE/ BTL
I
14
SHUTDOW
I
6
18
VDD
VOLUME
I
DESCRIPTION
Tap to voltage divider for internal midsupply bias generator used for
analog reference
Places the amplifier in fade mode if a logic low is placed on this terminal;
normal operation if logic high is placed on this terminal.
Analog power supply ground
Left channel negative input for fully differential input.
Left channel positive input for fully differential input.
Left channel negative audio output
Left channel positive audio output.
No connection
Power ground
Supply voltage terminal for power stage
Right channel negative input for fully differential input.
Right channel positive input for fully differential input.
Right channel negative audio output
Right channel positive audio output
Output control. When this terminal is high, SE outputs are selected. When
this terminal is low, BTL outputs are selected.
Places the amplifier in shutdown mode if a TTL logic low is placed on this
terminal
Supply voltage terminal
Terminal for dc volume control. DC voltage range is 0 to VDD.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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PA6021
„
CMOS IC
ABSOLUTE MAXIMUM RATING
PARAMETER
SYMBOL
RATINGS
UNIT
Supply Voltage, VDD, PVDD
VSS
-0.3V ~ 6V
V
Input Voltage, RIN+, RIN-, LIN+,LINVIN
-0.3V ~ VDD+0.3V
V
℃
Junction Temperature
TJ
-40°C ~ 150°C
℃
Operating Temperature
TOPR
-40°C ~ 85°C
℃
Storage Temperature Range
TSTG
-65°C ~ 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.
„
ELECTRICAL CHARACTERISTICS (Ta=25°C, unless otherwise specified)
PARAMETER
SYMBOL
DC CHARACTERISTICS (VDD=PVDD=5.5V)
Supply Voltage, VDD, PVDD
VDD
DC Differential Output Voltage
High-level Input Voltage
Low-level Input Voltage
High-level Input Current (SE/ BTL ,
FADE , SHUTDOWN , VOLUME
Low-level Input Current (SE/ BTL ,
FADE , SHUTDOWN , VOLUME
Supply Current, No Load
VOUT(DIFF)
CONDITIONS
MIN
4
VIH
SE/ BTL , FADE
SHUTDOWN
VIL
SE/ BTL , FADE
SHUTDOWN
0.8
V
V
V
V
0.8xVDD
2
0.6xVDD
1
µA
| IIL |
VIN=0V
1
µA
IDD
V(Bypass)
Low-Level Output Voltage
VOL
Output Power
POUT
THD+N
PSRR
ZI
Supply Ripple Rejection Ratio
RR
Noise Output Voltage
eN
Supply Current, Max Power Into a
4-Ω Load
IDD
SE/ BTL =0V, SHUTDOWN=2V
SE/ BTL =5.5V, SHUTDOWN=2V
SHUTDOWN =0V
Measured at pin 16, No load,
VDD=5.5V
RL=8Ω, Measured between output
and VDD=5.5V
RL=8Ω, Measured between output
and GND, VDD=5.5V
THD=1%, f=1kHz
THD=10%, f=1kHz
POUT=1W, RL=8Ω, f=20Hz~20kHz
VDD=PVDD=4V~5.5V
VOLUME=5V
f=1kHz, Gain=0dB,
C(BYP)=0.47µF
f=20Hz~20kHz, Gain=0dB,
C(BYP)=0.47µF
SHUTDOWN=2V, RL=4Ω,
SE/ BTL=0V, POUT=2W
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
mV
VIN=VDD=PVDD
VOH
Input Impedance
V
| IIH |
High-Level Output Voltage
Total Harmonic Distortion + Noise
Power Supply Rejection Ratio
MAX UNIT
5.5
30
50
Gain=0dB, SE/ BTL=0V
Gain=20dB, SE/ BTL=0V
6.0
3.0
Supply Current, Shutdown Mode
IDD(SD)
AC CHARACTERISTICS(VDD=PVDD=5V, RL=4Ω, Gain=20dB)
Bypass Voltage (Nominally VDD/2)
TYP
2.65
-42
7.5
5
1
9.0
6
20
2.75
2.85
V
700
mV
400
mV
mA
µA
1.5
2
<0.8%
-70
dB
W
14
kΩ
BTL
SE
-82
-57
dB
dB
BTL
36
µVRMS
1.3
ARMS
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PA6021
„
CMOS IC
TYPICAL APPLICATION CIRCUIT
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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QW-R502-257.A
PA6021
„
CMOS IC
BLOCK DIAGRAM
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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PA6021
CMOS IC
TYPICAL CHARACTERISTICS
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Output Waveform
Output Waveform
4
4
2
2
0
0
-2
-2
VRMS=2.52V
-4
VDD=5V, RL=4Ω,
THD=1%
4
VDD=5V, RL=4Ω,
THD=10%
4
2
2
0
0
-2
VRMS=2.92V
-4
-2
VRMS=2.54V
VRMS=2.95V
-4
-4
0
400
800
1200
1600
2000
0
400
800
1200
1600
2000
Time (µs)
Time (µs)
Output Waveform
4
2
0
-2
VRMS=2.84V
-4
VDD=5V, RL=8Ω,
POUT=1W
4
2
0
-2
VRMS=2.87V
-4
0
400
800
1200
1600
2000
Time (µs)
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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