Datasheet

UNISONIC TECHNOLOGIES CO., LTD
KA8602
LINEAR INTEGRATED CIRCUIT
LOW VOLTAGE AUDIO POWER
AMPLIFIER

DESCRIPTION
The UTC KA8602 is the audio power amplifier available for low
voltage. The UTC KA8602 supplies differential outputs for
maximizing output swing at low voltages. The UTC KA8602 does
not need coupling capacitors to the speaker. The gain of this
amplifier is controlled easily by two external resistors.

FEATURES
*Wide operating supply voltage: VCC=2V~16V
*Low quiescent supply current( ICC=2.7mA, typ)
*Medium output power (POUT=250mW at VCC=6V,
RL=32ohm, THD=10%
*Load impedance range: 8~100ohm
*Mute function (ICC=65A, typ)
*Minimum number of external parts required.
*Low distortion

ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
KA8602G-D08-T
KA8602G-D08-T
KA8602G-S08-R
KA8602L-S08-R

Package
Packing
DIP-8
SOP-8
Tube
Tape Reel
(1)Packing Type
(1) T: Tube, R: Tape Reel
(2)Package Type
(2) D08: DIP-8, S08: SOP-8
(3)Green Package
(3) L: Lead Free, G: Halogen Free and Lead Free
MARKING
DIP-8
8
7
6
5
UTC
KA8602
1
2
3
4
SOP-8
Date Code
L: Lead Free
G: Halogen Free
Lot Code
www.unisonic.com.tw
Copyright © 2015 Unisonic Technologies Co., Ltd
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KA8602

PIN CONFIGURATIONS
PIN
1
2
3
4
5
6
7
8

LINEAR INTEGRATED CIRCUIT
NAME
DESCRIPTION
Analog Ground for the amplifiers. A 1F capacitor at this pin (with a 5F capacitor at pin 8)
Input(+) provides 52dB (typ) of power supply rejection. Turn-on time of the circuit is affected by the
capacitor on this pin. This pin can be used as an alternative input.
Amplifier input. The input capacitor and resistor set low frequency roll-off and input
Input(-)
impedance. The feedback resistor is connected between this pin and output 1.
Output 1 Amplifier 1’s output. The DC level is about (VCC~0.7V)/2.
VCC
DC supply voltage is applied to this pin (VCC=2~16V).
GND
Ground pin.
Amplifier 2’s output. This signal is equal in amplitude, but 180℃ out of phase with that
Output 2
output 1, the DC level is about (VCC~0.7V)/2.
This pin can be used to power down the IC to converse power, or for muting, or both. When
Mute
at a logic “LOW” (less than 0.8V), the IC is enabled for normal operation. When at a logic
“HIGH” (2V to VCC), the IC is disabled. If Mute is open, that is equivalent to a logic “LOW”.
Ripple
A capacitor at this pin increase power supply rejection, and affects turn-on time. This pin
Rejection can be left open if the capacitor at pin 1 is sufficient.
BLOCK DIAGRAM
Inverting
Input
NonInberting
Input
-
2
+
1
Amp 1
R
+
Bias
4
8
5
Ripplie
Rejection
GND
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
Output 1
6
Output 2
7
Mute
R
-
VCC
3
Amp 2
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LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATINGS (TA=25°C, unless otherwise specified)
PARAMETER
SYMBOL
RATINGS
UNIT
Supply Voltage
VCC
-1~18
V
Output Current
IOUT
+-250
mA
Maximum Input, Ripple Rejection, Mute Pin Voltage
VI(max)
-1~Vcc+1
V
Applied Output Voltage( Output Pin When Disabled)
VOUT
-1~Vcc+1
V
Temperature Junction
TJ
-55 ~ +150
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 OPERATION CONDITIONS (TA=25°C, unless otherwise specified)
PARAMETER
SYMBOL
VCC
VI(MUTE)
IL(PEAK)
ZL
GV
TA
Supply Voltage
Voltage at Mute
Peak Load Current
Load Impedance
Differential Gain (5KHz Bandwidth)
Ambient Temperature

RATINGS
2~16
0~Vcc
±200
8~100
0~46
-20~+70
UNIT
V
V
mA
Ω
dB
C
ELECTRICAL CHARACTERISTICS (VCC=6V, TA=25℃, unless otherwise specified)
PARAMETER
DC PARAMETER
SYMBOL
Operating Current
ICc
Output Voltage
VOUT
Output Offset Voltage
Output High Level
Output Low Level
Input Bias Current
VO(OFF)
VOH
VOL
II(BIAS)
Equivalent Resistance
REQ
AC PARAMETER
Open Loop Gain of Amp. 1
Open Loop Gain of Amp. 2
Gv1
Gv2
Output Power
POUT
Total Harmonic Distortion
(f=1KHz)
THD
Gain Bandwidth Product
GBW
Power Supply Rejection
(VCC=6V, VCC=3V)
PSRR
Muting
GV(MUTE)
TEST CONDITIONS
VCC=3V, Mute=0.8V
VCC=16V, Mute=0.8V
VCC=3V, Mute=2V
VCC=3V, RL=16, R1=75K
VCC=6V, RL=16, R1=75K
VCC=12V, RL=16, R1=75K
VCC=6V, RF=75K, RL=32
2V<VCC<16V, IOUT=-75mA
2V<VCC<16V, IOUT=75mA
Pin 1
Pin 8
f=1KHz, RL=32
VCC=3V, RL=6, THD<10%
VCC=6V, RL=32, THD<10%
VCC=12V, RL=100, THD<10%
VCC=6V, RL=32, POUT=125mW
VCC<3V, RL=8, POUT=20mW
VCC<12V, RL=32, POUT=200mW
C1=, C2=0.01F
C1=0.1F, C2=0, f=1KHz
C1=1F, C2=5F, f=1KHz
Mute=2V, 1KHz<f<20KHz
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
MIN
1
-30
100
18
80
-0.35
55
250
400
TYP
MAX
UNIT
2.7
3.3
65
1.15
2.65
5.65
0
Vcc~1
0.16
-100
150
25
4
5
100
1.25
-200
220
40
mA
mA
A
V
V
V
mV
V
V
nA
K
K
0
0.35
0.5
0.5
0.6
1.5
1
50
12
52
70
30
dB
dB
mW
mW
mW
%
%
%
MHz
dB
dB
dB
dB
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KA8602
Speaker
APPLICATION CIRCUIT
Speaker
VCC (+1.0V ~ +8.0V)
VCC
75kΩ
Audio
Input
4
3kΩ
7
2
4.7kΩ
3
0.1μF
Speaker

LINEAR INTEGRATED CIRCUIT
UTC KA8602
1
6
8
Vee
(-1.0V ~ -8.0V)
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
5
10kΩ
Mute
20kΩ
20kΩ
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LINEAR INTEGRATED CIRCUIT
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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