L3305L-S14-T [UTC]
LOW VOLTAGE CLASS B AMPLIFIER; B低电压类放大器
| 型号： | L3305L-S14-T |
| 厂家： | 
Unisonic Technologies |
| 描述： | LOW VOLTAGE CLASS B AMPLIFIER |
| 文件： | 总6页 (文件大小：101K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
UNISONIC TECHNOLOGIES CO., LTD
L3305
LINEAR INTEGRATED CIRCUIT
LOW VOLTAGE CLASS B
AMPLIFIER
SOP-14
ꢀ
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
TSSOP-14
* Low Operating Voltage range (1V～3V)
* Low Operating current consumption
* Feedback stabilized gain less than 80 dB
* Output power exceeds 140 dBSPL
*Pb-free plating product number: L3305L
ꢀ ORDERING INFORMATION
Ordering Number
Package
Packing
Normal
Lead Free Plating
L3305-S14-R
L3305-S14-T
L3305-P14-R
L3305-P14-T
L3305L-S14-R
L3305L-S14-T
L3305L-P14-R
L3305L-P14-T
SOP-14
SOP-14
Tape Reel
Tube
TSSOP-14
TSSOP-14
Tape Reel
Tube
L3305L-S14-T
(1)Packing Type
(2)Package Type
(3)Lead Plating
(1) R: Tape Reel, T: Tube
(2) S14: SOP-14, P14: TSSOP-14
(3) L: Lead Free Plating, Blank: Pb/Sn
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Copyright © 2005 Unisonic Technologies Co., Ltd
QW-R107-052,A
L3305
LINEAR INTEGRATED CIRCUIT
ꢀ
PIN CONFIGURATION
OUTPUT STAGE I/P
DEC A
1
2
14 CURRENT TRIM
DEC B
13
12 OUTPUT B
OUTPUT A
3
4
VCC2
11
O/P GND
MIC BIAS
VCC1
5
6
10
9
PREAMP I/P
PREAMP GND
FEEDBACK
PREAMP O/P
7
8
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L3305
LINEAR INTEGRATED CIRCUIT
ꢀ
BLOCK DIAGRAM
CURRENT
TRIM
VCC2
11
OUTPUT A
3
OUTPUT B
12
14
2.2k
MIC
BIAS
5
470Ω
VCC1 10
4
O/P GND
9
6
13 DEC B
FEEDBACK
OUTPUT
STAGE
2
DEC A
PREAMP
I/P
PREAMP
7
8
1
PREAMP
O/P
OUTPUT
STAGE I/P
PREAMP
GND
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QW-R107-052,A
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L3305
LINEAR INTEGRATED CIRCUIT
ꢀ
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
Vcc1
PD
RATINGS
3
UNIT
V
Supply Voltage
Power Dissipation
200
mW
℃
Operating Temperature Range
Storage Temperature Range
TOPR
-10 ~ +60
-20 ~ +70
TSTG
℃
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
SYMBOL
eN
TEST CONDITIONS
MIN
72
TYP MAX UNIT
Input Referred Noise
0.9
0.7
75
2.5
1.2
78
µV
mA
dB
Total Current
ITOT
Voltage Gain
GV
Output = 0.707 VRMS
Total Harmonic Distortion & Noise
Gain Dependence on RB
Input Impedance of Output Amplifier
Stable with Battery Resistance
THD
Output = 0.707 VRMS
1.5
0.02
27
3.0
%
dB/Ω
kΩ
ZIN
18
36
22
Ω
Low
250
12
Hz
Frequency Response (-3 dB at 1 kHz)
High
kHz
Note: 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)
UNISONIC TECHNOLOGIES CO., LTD
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QW-R107-052,A
www.unisonic.com.tw
L3305
LINEAR INTEGRATED CIRCUIT
ꢀ
TEST CURICT
VB = 1.30 VDC
10μ
RB
4.7
10μ
1
14
10μ
10μ
2
3
4
5
6
7
13
12
820
VO
0.1μ
VI
20k
11
10
9
UTC L3305
RIN
3.9k
RL= 470Ω
0.1μ
RF
200k
1kHz 220
HAMMOND
99966
10μ
8
0.1μ
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
0.1μ
1
2
14
13
N/C
Receiver 400Ω
Impedance
6.8μ
6.8μ
12
11
10
9
3
4
5
UTC
L3305
VB = 1.30 VDC
10μ
N/C
10μ
MIC
6
7
0.1μ
220k
8
0.1μ
10k
0.1μ
0.1μ
Fig. 2 Typical Hearing Aid Circuit
UNISONIC TECHNOLOGIES CO., LTD
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QW-R107-052,A
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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.
UNISONIC TECHNOLOGIES CO., LTD
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QW-R107-052,A
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