LX1790CJ [MICROSEMI]
Audio Amplifier, 1 Channel(s), 1 Func, CDIP14, CERAMIC, DIP-14;
| 型号： | LX1790CJ |
| 厂家： | 
Microsemi |
| 描述： | Audio Amplifier, 1 Channel(s), 1 Func, CDIP14, CERAMIC, DIP-14 放大器 CD 商用集成电路 |
| 文件： | 总7页 (文件大小：123K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
LX1790
Low Voltage, Low Power, AudioMite™
I N T E G R A T E D P R O D U C T S
Class-D Audio Amplifier
RODUCTION ATA HEET
KEY FEATURES
DESCRIPTION
ꢀ Low Operating Current: 100µA
Typical
The MSC-LX1790 offers a patent
The MSC-LX1790 also comes with
pending, low voltage, low power, and three output switch resistance settings to
high efficiency amplifier for driving a accommodate different receivers. It is
hearing aid receiver. It comes with three delivered in bare die form.
programmable gain settings of 14dB,
ꢀ Low Operating Voltage: 0.9V
minimum
ꢀ 3 Gain Settings: 14, 20 & 26dB
ꢀ 3 Output Switch Resistance
Settings: 48, 24 & 16 Ω
ꢀ Small Form Factor: 2.03mm2
Bare die
20dB and 26dB.
APPLICATIONS
ꢀ Hearing Aid
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
PRODUCT HIGHLIGHT
CLOCK
CMP
HBRIDGE
DIN
PRE AMP
Σ
SPEAKER
Simplified Block Diagram
PACKAGE ORDER INFO
Cermic Dip
14 -Pin
LX1790CJ
Plastic Dip
8-Pin
LX1790CLM
Bare Die
7-Pin
LX1790CBD
TJ (°C)
10 to 55
J
LM
BD
Copyright 2001
Rev. 1.0,2002-05-08
Microsemi
Page 1
INTEGRATED PRODUCTS
5973 Avenida Encinas, Suite 101, Carlsbad 92008, Fax (760) 431-0541
LX1790
Low Voltage, Low Power, AudioMite™
I N T E G R A T E D P R O D U C T S
Class-D Audio Amplifier
RODUCTION ATA HEET
ABSOLUTE MAXIMUM RATINGS
PACKAGE PIN OUT
Input Logic Supply Voltage (VDD) .............................................................. -0.3V to +3.0V
Operating Temperature Range........................................................................10°C to 55°C
IMPSEL
(100,952)
VSS
OUTN
OUTP
(1590,818)
(1590,609)
(1590,349)
Note: Exceeding these ratings could cause damage to the device. All voltages are with respect to
Ground. Currents are positive into, negative out of specified terminal.
IN
(100,279)
(100,100)
VDD
GAINSEL
(1590,105)
(0,0)
Pad Locations Are (XMIN, YMIN) and are in µm
BD
(Bottom View)
VSS
OUTN
IMPSEL
1
2
8
VDD
OUTP
GAINSEL
IN
7
6
3
4
5
LM PACKAGE
(Top View)
OUTN
VSS
1
2
3
4
5
6
7
14
13
12
11
10
9
OUTP
VDD
IMPSEL
GAINSEL
IN
8
J PACKAGE
(Top View)
FUNCTIONAL PIN DESCRIPTION
PIN NAME
PIN NO
8 PIN LM
PIN NO
14 PIN J
DESCRIPTION
VDD
VSS
8
1
5
7
2
6
3
13
2
Supply Voltage
Ground
IN
8
Analog Audio Input
Positive Output Voltage
Negative Output Voltage
OUTP
OUTN
GAINSEL
IMPSEL
14
1
9
Gain Select. See Settings table below for selections.
6
Output Resistance Select. See Settings table below for selections.
SETTINGS
GAINSEL=VDD
IMPSEL=VSS
GAINSEL=VSS
IMPSEL=VDD
GAINSEL=Floating
IMPSEL=Floating
PIN
GAINSEL
IMPSEL
14dB
20dB
26dB
16Ω
24Ω
48Ω
Copyright 2001
Rev. 1.0,2002-05-08
Microsemi
Page 2
INTEGRATED PRODUCTS
5973 Avenida Encinas, Suite 101, Carlsbad 92008, Fax (760) 431-0541
LX1790
Low Voltage, Low Power, AudioMite™
I N T E G R A T E D P R O D U C T S
Class-D Audio Amplifier
RODUCTION ATA HEET
RECOMMENDED OPERATING CONDITIONS
LX1790
Typ
Parameter
Symbol
Test Conditions
Units
Min
Max
OPERATING CONDITIONS
Supply Voltage
Ground
!
VDD
VSS
0.9
1.5
V
V
0
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, the following specifications apply over the operating ambient temperature TA=25°C except where otherwise
noted. Test conditions: VDD=1.3V, VSS=0V, RLOAD=200Ω in Series with 60mH
LX1790
Typ
Parameter
Symbol
Test Conditions
Units
Min
Max
Switch Output Resistance @ Low
Drive
Switch Output Resistance @ Med
Drive
Switch Output Resistance @ High
Drive
ROUT-L
ROUT-M
ROUT-HI
48
24
16
Ω
19
Quiescent Current @ Low Drive
Quiescent Current @ Med Drive
Quiescent Current @ High Drive
3dB Bandwidth – mid Frequency
3dB Bandwidth – max Frequency
Output Switching Frequency
Gain Setting 1
IDDQL
IDDQM
IDDQH
FMIN
100
110
120
40
µA
100
Hz
KHz
KHz
dB
All gain settings
FCLK
FMAX
20
200
14
20
26
45
A1
A2
VIN = 100mVRMS @ 1KHz
VIN = 50mVRMS @ 1KHz
VIN = 25mVRMS @ 1KHz
Input Reference
12
18
24
16
22
28
Gain Setting 2
dB
Gain Setting 3
A3
dB
Power Supply Rejection Ratio
PSRR
dB
Total Harmonic Distortion @ Gain =
14dB
Total Harmonic Distortion @ Gain =
20dB
Total Harmonic Distortion @ Gain =
26bd
THD14
THD20
THD26
VIN = 50mVRMS @ 1KHz
VIN = 25mVRMS @ 1KHz
VIN=12mVRMS @ 1KHz
0.3
0.3
0.3
%
%
%
Input Referred Noise
Input Referred Noise
Input Referred Noise
Input Resistance
VN-14
VN-20
Gain = 14dB, 100Hz – 10Khz, A-Weighted
Gain = 20dB, 100Hz – 10Khz, A-weighted
Gain = 26dB, 100Hz – 10Khz, A-weighted
Gain = 14dB
20
10
6
µV
µV
VN-26
µV
RIN-14
RIN-20
RIN-26
FCLK
120
83
53
200
0
K Ω
K Ω
K Ω
KHz
mV
Input Resistance
Gain = 20dB
Input Resistance
Gain = 26dB
Output clock frequency
DC Offset OutN-OutP
140
-5
300
5
No input signal
VOFF-NP
Copyright 2001
Rev. 1.0,2002-05-08
Microsemi
Page 3
INTEGRATED PRODUCTS
5973 Avenida Encinas, Suite 101, Carlsbad 92008, Fax (760) 431-0541
LX1790
Low Voltage, Low Power, AudioMite™
I N T E G R A T E D P R O D U C T S
Class-D Audio Amplifier
RODUCTION ATA HEET
CHARTS
THD vs input level
4
3.5
3
2.5
2
1.5
1
0.5
0
0
20
40
60
80
100
Input [mVrms]
Figure 1 – THD vs. Input Level FIN = 1kHz, Gain = 20dB (Note: clip level at 90mVrms)
LX1790 H-bridge on impedance
30
25
20
15
10
5
0
0.8
0.9
1
1.1
1.2
1.3
1.4
1.5
1.6
Supply voltage
Figure 2 – H-Bridge Impedance vs. Supply Voltage (Lowest Impedance Setting)
Copyright 2001
Rev. 1.0,2002-05-08
Microsemi
INTEGRATED PRODUCTS
Page 4
5973 Avenida Encinas, Suite 101, Carlsbad 92008, Fax (760) 431-0541
LX1790
Low Voltage, Low Power, AudioMite™
I N T E G R A T E D P R O D U C T S
Class-D Audio Amplifier
RODUCTION ATA HEET
MECHANICALS
7-Pin Bare Die
BD
MILLIMETERS
INCHES
Dim
1.78mm
MIN
MAX
1.15
1.78
MIN
MAX
X
Y
Z
0.045
0.070
(100,952)
0.190 0.216 0.0075 0.0085
(1590,818)
(1590,609)
(1590,349)
1.15mm
(100,279)
(100,100)
(1590,105)
(0,0)
Pad Locations Are (XMIN, YMIN) and are in µm
14-Pin Ceramic Dip
J
MILLIMETERS
INCHES
A
Dim
MIN
19.30
5.59
-
0.38
1.02
MAX
19.94
7.11
5.08
0.51
1.77
MIN
MAX
0.785
0.280
0.200
0.020
0.070
A
B
C
D
F
G
H
J
0.760
0.220
-
0.015
0.040
B
L
2.54 BSC
0.100 BSC
-
2.03
0.38
5.08
7.87
15°
-
0.080
0.015
0.200
0.310
15°
C
K
0.20
3.17
7.37
-
0.008
0.125
0.290
-
F
K
L
M
J
H
G
D
M
Note:
1. Dimensions do not include mold flash or protrusions;
these shall not exceed 0.155mm(.006”) on any side.
Lead dimension shall not include solder coverage.
Copyright 2001
Rev. 1.0,2002-05-08
Microsemi
Page 5
INTEGRATED PRODUCTS
5973 Avenida Encinas, Suite 101, Carlsbad 92008, Fax (760) 431-0541
LX1790
Low Voltage, Low Power, AudioMite™
I N T E G R A T E D P R O D U C T S
Class-D Audio Amplifier
RODUCTION ATA HEET
MECHANICALS
8-Pin Plastic MLP-Micro Exposed Pad
LM
MILLIMETERS
INCHES
Dim
MIN
2.90
2.90
0.65
0.15
MAX
3.10
3.10
0.75
0.25
MIN
MAX
A
A
B
C
D
E
F
G
H
I
0.114 0.122
0.114 0.122
0.025 0.029
0.005 0.009
0.075 BSC
0.010 0.016
0.025 BSC
K
J
E
1.841 BSC
B
0.27
0.43
0.65 BSC
1.22 BSC
H
0.048 BSC
0
0.21
0
0.10
0.37
0.10
0
0.003
0.008 0.014
0.003
I
G
F
J
K
0
C
Internally Connected
together, but
isolated from all
other terminals
Note:
1. Dimensions do not include mold flash or
D
protrusions;
these
shall
not
exceed
0.155mm(.006”) on any side. Lead dimension
shall not include solder coverage.
Copyright 2001
Rev. 1.0,2002-05-08
Microsemi
Page 6
INTEGRATED PRODUCTS
5973 Avenida Encinas, Suite 101, Carlsbad 92008, Fax (760) 431-0541
LX1790
Low Voltage, Low Power, AudioMite™
I N T E G R A T E D P R O D U C T S
Class-D Audio Amplifier
RODUCTION ATA HEET
NOTES
PRODUCTION DATA – Information contained in this document is proprietary to
Microsemi and is current as of publication date. This document may not be modified in
any way without the express written consent of Microsemi. Product processing does not
necessarily include testing of all parameters. Microsemi reserves the right to change the
configuration and performance of the product and to discontinue product at any time.
Copyright 2001
Rev. 1.0,2002-05-08
Microsemi
INTEGRATED PRODUCTS
Page 7
5973 Avenida Encinas, Suite 101, Carlsbad 92008, Fax (760) 431-0541
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