LME49725 [NSC]
PowerWise Dual High Performance, High Fidelity Audio Operational Amplifier; 半导体PowerWise两个高性能，高保真音频运算放大器
| 型号： | LME49725 |
| 厂家： | 
National Semiconductor |
| 描述： | PowerWise Dual High Performance, High Fidelity Audio Operational Amplifier |
| 文件： | 总24页 (文件大小：1262K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
April 3, 2008
LME49725
PowerWise® Dual High Performance, High Fidelity Audio
Operational Amplifier
General Description
Key Specifications
The LME49725 is part of the ultra-low distortion, low noise,
high slew rate operational amplifier series optimized and fully
specified for high performance, high fidelity applications.
Combining advanced leading-edge process technology with
state-of-the-art circuit design, the LME49725 audio opera-
tional amplifiers deliver superior audio signal amplification for
outstanding audio performance. The LME49725 combines
extremely low voltage noise density (3.3nV/√Hz) with van-
ishingly low THD+N (0.00004%) to easily satisfy the most
demanding audio applications. To ensure that the most chal-
lenging loads are driven without compromise, the LME49725
has a high slew rate of ±15V/μs and an output current capa-
bility of ±22mA. Further, dynamic range is maximized by an
output stage that drives 2kΩ loads to within 1V of either power
supply voltage and to within 1.4V when driving 600Ω loads.
■ꢀPower Supply Voltage Range
±4.5V to ±18V
■ꢀTHD+N
(AV = 1, VOUT = 3VRMS, fIN = 1kHz)
RL = 2kΩ
0.00004% (typ)
0.00004% (typ)
3.0mA (typ)
RL = 600Ω
■ꢀQuiescent current per Amplifier
■ꢀInput Noise Density
■ꢀSlew Rate
■ꢀGain Bandwidth Product
■ꢀOpen Loop Gain (RL = 600Ω)
■ꢀInput Bias Current
■ꢀInput Offset Voltage
■ꢀDC Gain Linearity Error
3.3nV/√Hz (typ)
±15V/μs (typ)
40MHz (typ)
135dB (typ)
15nA (typ)
Part of the PowerWise® family of energy efficient solutions,
the LME49725 consumes only 3.0mA of supply current per
amplifier while providing superior performance to high perfor-
mance, high fidelity applications.
0.5mV (typ)
0.000009% (typ)
The LME49725's outstanding CMRR (120dB), PSRR
(120dB), and VOS (0.5mV) give the amplifier excellent oper-
ational amplifier DC performance.
Features
Optimized for superior audio signal fidelity
■
■
■
The LME49725 has a wide supply range of ±4.5V to ±18V.
Over this supply range the LME49725’s input circuitry main-
tains excellent common-mode and power supply rejection, as
well as maintaining its low input bias current. The LME49725
is unity gain stable. This audio operational amplifier achieves
outstanding AC performance while driving complex loads with
values as high as 100pF.
Output short circuit protection
PSRR and CMRR exceed 120dB (typ)
Applications
Audio amplification
■
■
■
■
■
■
■
■
Preamplifiers
The LME49725 is available in 8–lead narrow body SOIC.
Multimedia
Phono preamplifiers
Professional audio
Equalization and crossover networks
Line drivers
Line receivers
Active filters
■
© 2008 National Semiconductor Corporation
300342
www.national.com
Connection Diagrams
30034255
Order Number LME49725MA
See NS Package Number — M08A
LME49725 Top Mark
300342p0
N — National logo
Z — Assembly plant code
X — 1 Digit date code
TT — Die traceability
L49725 — LME49725
MA — Package code
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2
ESD Rating (Note 4)
ESD Rating (Note 5)
Pins 1, 4, 7 and 8
Pins 2, 3, 5 and 6
Junction Temperature
Thermal Resistance
ꢁθJA (SO)
2000V
Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
200V
100V
150°C
Power Supply Voltage
(VS = V+ - V-)
38V
−65°C to 150°C
(V-)-0.7V to (V+)+0.7V
±0.7V
145°C/W
Storage Temperature
Input Voltage
Differential Input Voltage
Output Short Circuit (Note 3)
Power Dissipation
Temperature Range
TMIN ≤ TA ≤ TMAX
Supply Voltage Range
–40°C ≤ TA ≤ 85°C
±4.5V ≤ VS ≤ ±18V
Continuous
Internally Limited
Electrical Characteristics for the LME49725 (Note 2) The specifications apply for VS = ±15V, RL
= 2kΩ, fIN = 1kHz, TA = 25°C, unless otherwise specified.
LME49725
Units
Symbol
Parameter
Conditions
AV = 1, VOUT = 3Vrms
Typical
Limit
(Limits)
(Note 6)
(Note 7)
RL = 2kΩ
RL = 600Ω
THD+N
Total Harmonic Distortion + Noise
Intermodulation Distortion
0.00004
0.00004
%
%
0.0002
AV = 1, VOUT = 3VRMS
IMD
0.00005
%
Two-tone, 60Hz & 7kHz 4:1
GBWP
SR
Gain Bandwidth Product
Slew Rate
40
30
MHz (min)
±15
±10
V/μs (min)
VOUT = 1VP-P, –3dB
referenced to output magnitude
at f = 1kHz
FPBW
ts
Full Power Bandwidth
7
MHz
AV = –1, 10V step, CL = 100pF
0.1% error range
Settling time
1.6
0.4
μs
μVRMS
(max)
fBW = 20Hz to 20kHz
Equivalent Input Noise Voltage
Equivalent Input Noise Density
0.8
5.2
en
f = 1kHz
f = 10Hz
3.3
20
ꢀnV/√Hz
(max)
f = 1kHz
f = 10Hz
1.4
3.5
ꢀpA/√Hz
ꢀpA/√Hz
mV (max)
in
Current Noise Density
Offset Voltage
VOS
±0.5
0.2
±1.0
100
Average Input Offset Voltage Drift vs
Temperature
ΔVOS/ΔTemp
–40°C ≤ TA ≤ 85°C
ΔVS = 20V (Note 8)
μV/°C
Average Input Offset Voltage Shift vs
Power Supply Voltage
PSRR
120
dB (min)
fIN = 1kHz
118
112
dB
dB
ISOCH-CH
IB
Channel-to-Channel Isolation
fIN = 20kHz
Input Bias Current
VCM = 0V
±15
±90
65
nA (max)
Input Bias Current Drift vs
Temperature
ΔIOS/ΔTemp
IOS
0.1
nA/°C
–40°C ≤ TA ≤ 85°C
Input Offset Current
VCM = 0V
11
nA (max)
Common-Mode Input Voltage Range
(V+)-2.0
(V-)+2.0
V (min)
V (min)
VIN-CM
CMRR
±13.9
Common-Mode Rejection
–10V<Vcm<10V
–10V<Vcm<10V
120
30
100
dB (min)
kΩ
Differential Input Impedance
ZIN
Common Mode Input Impedance
1000
MΩ
3
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LME49725
Units
(Limits)
Symbol
Parameter
Conditions
Typical
Limit
(Note 7)
110
(Note 6)
135
–10V<Vout<10V, RL = 600Ω
–10V<Vout<10V, RL = 2kΩ
–10V<Vout<10V, RL = 10kΩ
RL = 600Ω
dB (min)
AVOL
Open Loop Voltage Gain
135
dB
dB
135
±13.6
±13.9
±14.0
±22
±11.5
V (min)
V
VOUTMAX
Maximum Output Voltage Swing
RL = 2kΩ
RL = 10kΩ
V
IOUT
Output Current
mA (min)
RL = 600Ω, VS = ±17V
+45
–35
mA
mA
IOUT-CC
Instantaneous Short Circuit Current
fIN = 10kHz
Closed-Loop
Open-Loop
ROUT
Output Impedance
0.01
18
Ω
Ω
%
CLOAD
IS
Capacitive Load Drive Overshoot
Quiescent Current per Amplifier
1/f Corner Frequency
100pF
16
3.0
120
IOUT = 0mA
4.5
mA (max)
Hz
fC
Note 1: “Absolute Maximum Ratings” indicate limits beyond which damage to the device may occur, including inoperability and degradation of device reliability
and/or performance. Functional operation of the device and/or non-degradation at the Absolute Maximum Ratings or other conditions beyond those indicated in
the Recommended Operating Conditions is not implied. The Recommended Operating Conditions indicate conditions at which the device is functional and the
device should not be operated beyond such conditions. All voltages are measured with respect to the ground pin, unless otherwise specified.
Note 2: The Electrical Characteristics tables list guaranteed specifications under the listed Recommended Operating Conditions except as otherwise modified
or specified by the Electrical Characteristics Conditions and/or Notes. Typical specifications are estimations only and are not guaranteed.
Note 3: The maximum power dissipation must be derated at elevated temperatures and is dictated by TJMAX, θJA, and the ambient temperature, TA. The maximum
allowable power dissipation is PDMAX = (TJMAX - TA) / θJA or the number given in Absolute Maximum Ratings, whichever is lower.
Note 4: Human body model, applicable std. JESD22-A114C.
Note 5: Machine model, applicable std. JESD22-A115-A.
Note 6: Typical values represent most likely parametric norms at TA = +25ºC, and at the Recommended Operation Conditions at the time of product
characterization and are not guaranteed.
Note 7: Datasheet min/max specification limits are guaranteed by test or statistical analysis.
Note 8: PSRR is measured as follows: VOS is measured at two supply voltages, ±5V and ±15V, PSRR = |20log(ΔVOS/ΔVS)|.
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4
Typical Performance Characteristics
THD+N vs Frequency
VS = 4.5V, VOUT = 1.2VRMS, RL = 600Ω
THD+N vs Frequency
VS = 15V, VOUT = 3VRMS, RL = 600Ω
300342a6
300342b1
THD+N vs Frequency
VS = 18V, VOUT = 3VRMS, RL = 600Ω
THD+N vs Frequency
VS = 4.5V, VOUT = 1.2VRMS, RL = 2kΩ
300342a4
300342b4
THD+N vs Frequency
VS = 15V, VOUT = 3VRMS, RL = 2kΩ
THD+N vs Frequency
VS = 18V, VOUT = 3VRMS, RL = 2kΩ
300342b2
300342a9
5
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THD+N vs Frequency
VS = 4.5V, VOUT = 1.2VRMS, RL = 10kΩ
THD+N vs Frequency
VS = 15V, VOUT = 3VRMS, RL = 10kΩ
300342a5
300342b0
30034234
30034236
THD+N vs Frequency
VS = 18V, VOUT = 3VRMS, RL = 10kΩ
THD+N vs Output Voltage
VS = 4.5V, RL = 600Ω, f = 1kHz
300342b3
THD+N vs Output Voltage
VS = 15V, RL = 600Ω, f = 1kHz
THD+N vs Output Voltage
VS = 18V, RL = 600Ω, f = 1kHz
30034235
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THD+N vs Output Voltage
VS = 4.5V, RL = 2kΩ, f = 1kHz
THD+N vs Output Voltage
VS = 15V, RL = 2kΩ, f = 1kHz
30034229
30034228
THD+N vs Output Voltage
VS = 18V, RL = 2kΩ, f = 1kHz
THD+N vs Output Voltage
VS = 4.5V, RL = 10kΩ, f = 1kHz
30034231
30034230
THD+N vs Output Voltage
VS = 15V, RL = 10kΩ, f = 1kHz
THD+N vs Output Voltage
VS = 18V, RL = 10kΩ, f = 1kHz
30034232
30034233
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CMRR vs Frequency
VS = 4.5V, RL = 600Ω
CMRR vs Frequency
VS = 15V, RL = 600Ω
30034283
30034284
CMRR vs Frequency
VS = 15V, RL = 600Ω
CMRR vs Frequency
VS = 4.5V, RL = 2kΩ
30034277
30034285
CMRR vs Frequency
VS = 15V, RL = 2kΩ
CMRR vs Frequency
VS = 18V, RL = 2kΩ
30034278
30034279
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CMRR vs Frequency
VS = 4.5V, RL = 10kΩ
CMRR vs Frequency
VS = 15V, RL = 10kΩ
30034281
30034280
CMRR vs Frequency
VS = 18V, RL = 10kΩ
+PSRR vs Frequency
VS = 4.5V, RL = 2kΩ, VRIPPLE = 200mVP-P
30034282
30034268
+PSRR vs Frequency
VS = 4.5V, RL = 10kΩ, VRIPPLE = 200mVP-P
+PSRR vs Frequency
VS = 4.5V, RL = 600Ω, VRIPPLE = 200mVP-P
30034269
30034270
9
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+PSRR vs Frequency
VS = 15V, RL = 2kΩ, VRIPPLE = 200mVP-P
+PSRR vs Frequency
VS = 15V, RL = 10kΩ, VRIPPLE = 200mVP-P
30034271
30034272
+PSRR vs Frequency
VS = 15V, RL = 600Ω, VRIPPLE = 200mVP-P
+PSRR vs Frequency
VS = 18V, RL = 2kΩ, VRIPPLE = 200mVP-P
30034273
300342a7
+PSRR vs Frequency
VS = 18V, RL = 10kΩ, VRIPPLE = 200mVP-P
+PSRR vs Frequency
VS = 18V, RL = 600Ω, VRIPPLE = 200mVP-P
30034276
30034275
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-PSRR vs Frequency
VS = 4.5V, RL = 2kΩ, VRIPPLE = 200mVP-P
-PSRR vs Frequency
VS = 4.5V, RL = 10kΩ, VRIPPLE = 200mVP-P
30034295
30034296
-PSRR vs Frequency
VS = 4.5V, RL = 600Ω, VRIPPLE = 200mVP-P
-PSRR vs Frequency
VS = 15V, RL = 2kΩ, VRIPPLE = 200mVP-P
30034297
30034298
-PSRR vs Frequency
VS = 15V, RL = 10kΩ, VRIPPLE = 200mVP-P
-PSRR vs Frequency
VS = 15V, RL = 600Ω, VRIPPLE = 200mVP-P
30034299
300342a0
11
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-PSRR vs Frequency
VS = 18V, RL = 2kΩ, VRIPPLE = 200mVP-P
-PSRR vs Frequency
VS = 18V, RL = 10kΩ, VRIPPLE = 200mVP-P
300342a2
300342a1
-PSRR vs Frequency
VS = 18V, RL = 600Ω, VRIPPLE = 200mVP-P
Crosstalk vs Frequency
VS = 4.5V, VOUT = 1.2VRMS, RL = 600Ω
300342a3
30034292
Crosstalk vs Frequency
VS = 15V, VOUT = 3VRMS, RL = 600Ω
Crosstalk vs Frequency
VS = 18V, VOUT = 3VRMS, RL = 600Ω
30034293
30034294
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Crosstalk vs Frequency
VS = 4.5V, VOUT = 1.2VRMS,, RL = 2kΩ
CrosstalkR vs Frequency
VS = 15V, VOUT = 3VRMS,, RL = 2kΩ
30034286
30034287
Crosstalk vs Frequency
VS = 18V, VOUT = 3VRMS,, RL = 2kΩ
Crosstalk vs Frequency
VS = 4.5V, VOUT = 1.2VRMS,, RL = 10kΩ
30034288
30034289
Crosstalk vs Frequency
VS = 4.5V, VOUT = 1.2VRMS,, RL = 600Ω
Crosstalk vs Frequency
VS = 15V, VOUT = 3VRMS,, RL = 10kΩ
30034292
30034290
13
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Crosstalk vs Frequency
VS = 15V, VOUT = 3VRMS,, RL = 600Ω
Crosstalk vs Frequency
VS = 18V, VOUT = 3VRMS, RL = 10kΩ
30034293
30034291
Crosstalk vs Frequency
VS = 18V, VOUT = 3VRMS, RL = 600Ω
IMD vs Output Voltage
VS = 4.5V, RL = 600Ω
30034294
30034216
IMD vs Output Voltage
VS = 15V, RL = 600Ω
IMD vs Output Voltage
VS = 18V, RL = 600Ω
30034267
30034266
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14
IMD vs Output Voltage
VS = 4.5V, RL = 2kΩ
IMD vs Output Voltage
VS = 15V, RL = 2kΩ
30034264
30034210
30034212
30034265
IMD vs Output Voltage
VS = 18V, RL = 2kΩ
IMD vs Output Voltage
VS = 4.5V, RL = 10kΩ
30034213
IMD vs Output Voltage
VS = 15V, RL = 10kΩ
IMD vs Output Voltage
VS = 18V, RL = 10kΩ
30034215
15
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Total Quiescent Current vs Power Supply
Voltage Noise Density vs Frequency
VCC = 15V, VEE = –15V, No Load
30034246
30034247
Current Noise vs Frequency
VCC = 15V, VEE = –15V, No Load
300342a8
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16
ductance between the power supply and the supply pins. In
addition to a 10μF capacitor, a 0.1μF capacitor is also rec-
ommended.
Application Information
OPERATING RATINGS AND BASIC DESIGN GUIDELINES
The amplifier’s inputs lead lengths should also be as short as
possible. If the op amp does not have a bypass capacitor, it
may oscillate.
The LME49725 has a supply voltage range from +9V to +36V
single supply or ±4.5V to ±18V dual supply.
Bypass capacitors for the supplies should be placed as close
to the amplifier as possible. This will help minimize any in-
17
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Demonstration Board Schematic
30034260
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18
Bill Of Materials For Demonstration Board (Inverting Configuration)
Description
Designator
Part Number
Mfg
Ceramic Capacitor 0.1μF, 10% 50V
0805 SMD
C1, C2
C0805C104K3RAC7533
Kemet
Tantalum Capacitor 10μF, 10% 20V,
B-size
C3, C4
T491B106K025AT
Kemet
JMPR1, JMPR4, R1, R4, R6, R9 CRCW0805000020EA
Vishay
Vishay
Resistor 0Ω, 1/8W, 1% 0805 SMD
Resistor 10kΩ, 1/8W, 1% 0805 SMD
Header, 2-Pin
R2, R3, R8, R7
JP1, JP2, JP3, JP4
JP5
CRCW080510K0FKEA
Header, 3-Pin
SMA stand-up connectors
P1-P4 (Optional)
132134
Amphenol COnnex
Note: Do not stuff Jmpr2, Jmpr3, Jmpr5, and Jmpr6.
19
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Demonstration Board Layout
30034262
30034263
30034261
Silkscreen Layer
Top Layer
Bottom Layer
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20
Revision History
Rev
Date
04/03/08
Description
1.0
Initial release.
21
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Physical Dimensions inches (millimeters) unless otherwise noted
Narrow SOIC Package
Order Number LME49725MA
NS Package Number M08A
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22
Notes
23
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Notes
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