UTC L3305G-P14-R Low voltage class b amplifier Datasheet

UNISONIC TECHNOLOGIES CO., LTD
L3305
LINEAR INTEGRATED CIRCUIT
LOW VOLTAGE CLASS B
AMPLIFIER

DESCRIPTION
The UTC L3305 can be operated as a class B amplifier. It can
also operated as a medium power "vari-bias" class A amplifier.
It include a preamplifier with adjustable gain and a power
amplifier.

FEATURES
* Low Operating Voltage range (1V~3V)
* Low Operating current consumption
* Feedback stabilized gain less than 80 dB
* Output power exceeds 140 dBSPL

ORDERING INFORMATION
Ordering Number
L3305G-S14-R
L3305G-P14-R
L3305G-S14-R

Package
SOP-14
TSSOP-14
(1)Packing Type
(1) R: Tape Reel
(2)Package Type
(2) S14: SOP-14, P14: TSSOP-14
(3)Green Package
(3) G: Halogen Free and Lead Free
Packing
Tape Reel
Tape Reel
MARKING
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Copyright © 2015 Unisonic Technologies Co., Ltd
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QW-R107-052.B
L3305
LINEAR INTEGRATED CIRCUIT

PIN CONFIGURATION

BLOCK DIAGRAM
VCC2
CURRENT
OUTPUT A
TRIM
11
MIC
5
BIAS
14
3
OUTPUT B
12
2.2k
470Ω
VCC1 10
FEEDBACK
4 O/P GND
9
13 DEC B
OUTPUT
STAGE
PREAMP 6
I/P
2 DEC A
PREAMP
7
8
1
PREAMP
GND
PREAMP
O/P
OUTPUT
STAGE I/P
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QW-R107-052.B
L3305

LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
RATINGS
UNIT
Supply Voltage
VCC1
3
V
Power Dissipation
PD
200
mW
Operating Temperature Range
TOPR
-10 ~ +60
Storage Temperature Range
TSTG
-20 ~ +70
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
PARAMETER
Input Referred Noise
Total Current
Voltage Gain
Total Harmonic Distortion & Noise
Gain Dependence on RB
Input Impedance of Output Amplifier
Stable with Battery Resistance
SYMBOL
TEST CONDITIONS
eN
ITOT
GV
Output = 0.707 VRMS
THD
Output = 0.707 VRMS
ZIN
MIN
72
18
TYP
0.9
0.7
75
1.5
0.02
27
MAX
2.5
1.2
78
3.0
36
22
UNIT
μV
mA
dB
%
dB/Ω
kΩ
Ω
Hz
kHz
Low
250
High
12
Notes: 1. All parameters tested in Test Circuit Fig. 1.
2. Conditions: Supply voltage VB= 1.3 VDC, Temperature ambient = 25℃, Frequency = 1kHz, Noise Filter
Bandwidth at 12 dB/oct (0.2 to 10kHz)
Frequency Response (-3 dB at 1 kHz)
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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QW-R107-052.B
L3305

LINEAR INTEGRATED CIRCUIT
TEST CURICT
VB = 1.30 VDC
10μ
10μ
820
VI
0.1μ
20k
RIN
3.9k
220
14
2
13
3
12
4
RF
200k
0.1μ
UTC L3305
RB
4.7
10μ
VO
11
5
10
6
9
7
8
0.1μ
N/C
1kHz
1
N/C
10μ
10μ
RL= 470Ω
HAMMOND
99966
VC
10k
0.1μ 0.1μ
Note: 1. Test Circuit Amplifier Gain = 20 Log10 ( VOUT / VIN ) + 40dB
RF
2. Preamp Gain =
set at 35dB
RIN
Fig. 1 Test Circuit
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www.unisonic.com.tw
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QW-R107-052.B
L3305
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.
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www.unisonic.com.tw
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QW-R107-052.B
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