LME49860NA/NOPB [NSC]
IC DUAL OP-AMP, 700000 uV OFFSET-MAX, 55 MHz BAND WIDTH, PDIP8, PLASTIC, DIP-8, Operational Amplifier;
| 型号： | LME49860NA/NOPB |
| 厂家： | 
National Semiconductor |
| 描述： | IC DUAL OP-AMP, 700000 uV OFFSET-MAX, 55 MHz BAND WIDTH, PDIP8, PLASTIC, DIP-8, Operational Amplifier 运算放大器 |
| 文件： | 总34页 (文件大小：1023K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
June 2007
LME49860
44V Dual High Performance, High Fidelity Audio
Operational Amplifier
General Description
RL = 2kΩ
0.00003% (typ)
0.00003% (typ)
2.7nV/√Hz (typ)
±20V/μs (typ)
55MHz (typ)
140dB (typ)
RL = 600Ω
The LME49860 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 LME49860 audio opera-
tional amplifiers deliver superior audio signal amplification for
outstanding audio performance. The LME49860 combines
extremely low voltage noise density (2.7nV/√Hz) with van-
ishingly low THD+N (0.00003%) to easily satisfy the most
demanding audio applications. To ensure that the most chal-
lenging loads are driven without compromise, the LME49860
has a high slew rate of ±20V/μs and an output current capa-
bility of ±26mA. 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.
■ꢀInput Noise Density
■ꢀSlew Rate
■ꢀGain Bandwidth Product
■ꢀOpen Loop Gain (RL = 600Ω)
■ꢀInput Bias Current
■ꢀInput Offset Voltage
■ꢀDC Gain Linearity Error
10nA (typ)
0.1mV (typ)
0.000009%
Features
Easily drives 600Ω loads
■
■
■
■
■
The LME49860's outstanding CMRR (120dB), PSRR
(120dB), and VOS (0.1mV) give the amplifier excellent oper-
ational amplifier DC performance.
Optimized for superior audio signal fidelity
Output short circuit protection
PSRR and CMRR exceed 120dB (typ)
SOIC, DIP packages
The LME49860 has a wide supply range of ±2.5V to ±22V.
Over this supply range the LME49860 maintains excellent
common-mode rejection, power supply rejection, and low in-
put bias current. The LME49860 is unity gain stable. This
Audio Operational Amplifier achieves outstanding AC perfor-
mance while driving complex loads with values as high as
100pF.
Applications
Ultra high quality audio amplification
■
■
■
■
■
■
■
■
High fidelity preamplifiers
High fidelity multimedia
The LME49860 is available in 8–lead narrow body SOIC and
8–lead Plastic DIP packages. Demonstration boards are
available for each package.
State of the art phono pre amps
High performance professional audio
High fidelity equalization and crossover networks
Key Specifications
High performance line drivers
■ꢀPower Supply Voltage Range
±2.5V to ±22V
High performance line receivers
High fidelity active filters
■
■ꢀTHD+N
(AV = 1, VOUT = 3VRMS, fIN = 1kHz)
Typical Application
202151k5
Passively Equalized RIAA Phono Preamplifier
© 2007 National Semiconductor Corporation
202151
www.national.com
Connection Diagrams
20215155
Order Number LME49860MA
See NS Package Number — M08A
Order Number LME49860NA
See NS Package Number — N08E
LME49860MA Top Mark
LME49860NA Top Mark
20215101
20215102
N — National Logo
Z — Assembly Plant code
X — 1 Digit Date code
TT — Die Traceability
L49860 — LME49860
MA — Package code
N — National Logo
U — Fabrication code
Z — Assembly Plant code
XY — 2 Digit Date code
TT — Die Traceability
NA — Package code
www.national.com
2
Pins 2, 3, 5 and 6
Junction Temperature
Thermal Resistance
ꢁθJA (SO)
100V
150°C
Absolute Maximum Ratings (Notes 1, 2)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
145°C/W
102°C/W
ꢁθJA (NA)
Power Supply Voltage
(VS = V+ - V-)
Storage Temperature
Input Voltage
46V
−65°C to 150°C
Operating Ratings
(V-)ꢀ-ꢀ0.7V to (V+)ꢀ+ꢀ0.7V
Continuous
Temperature Range
Output Short Circuit (Note 3)
ESD Susceptibility (Note 4)
ESD Susceptibility (Note 5)
Pins 1, 4, 7 and 8
TMIN ≤ TA ≤ TMAX
Supply Voltage Range
−40°C ≤ TA ≤ 85°C
±2.5V ≤ VS ≤ ±22V
2000V
200V
Electrical Characteristics for the LME49860 (Note 1) The following specifications apply for VS =
±18V and ±22V, RL = 2kΩ, RSOURCE = 10Ω, fIN = 1kHz, TA = 25°C, unless otherwise specified.
LME49860
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
% (max)
%
0.00003
0.00003
0.00009
AV = 1, VOUT = 3VRMS
IMD
0.00005
Two-tone, 60Hz & 7kHz 4:1
GBWP
SR
Gain Bandwidth Product
Slew Rate
55
45
MHz (min)
±20
±15
V/μs (min)
VOUT = 1VP-P, –3dB
referenced to output magnitude
at f = 1kHz
FPBW
ts
Full Power Bandwidth
10
MHz
AV = –1, 10V step, CL = 100pF
0.1% error range
Settling time
1.2
μs
μVRMS
(max)
fBW = 20Hz to 20kHz
Equivalent Input Noise Voltage
0.34
0.65
4.7
en
f = 1kHz
f = 10Hz
2.7
6.4
ꢀnV/√Hz
(max)
Equivalent Input Noise Density
Current Noise Density
Offset Voltage
in
f = 1kHz
f = 10Hz
1.6
3.1
ꢀpA/√Hz
VS = ±18V
VS = ±22V
±0.12
±0.14
±0.7
±0.7
mV (max)
mV (max)
VOS
Average Input Offset Voltage Drift vs
Temperature
ΔVOS/ΔTemp
0.2
–40°C ≤ TA ≤ 85°C
μV/°C
(Note 8)
Average Input Offset Voltage Shift vs
Power Supply Voltage
VS = ±18V, Δ VS = 24V
VS = ±22V, Δ VS = 30V
PSRR
120
120
dB
dB (min)
110
72
fIN = 1kHz
118
112
ISOCH-CH
Channel-to-Channel Isolation
Input Bias Current
dB
fIN = 20kHz
IB
VCM = 0V
10
0.1
11
nA (max)
nA/°C
Input Bias Current Drift vs
Temperature
ΔIOS/ΔTemp
–40°C ≤ TA ≤ 85°C
VCM = 0V
IOS
Input Offset Current
65
nA (max)
+17.1
–16.9
(V+) – 2.0
(V-) + 2.0
V (min)
V (min)
VS = ±18V
VIN-CM
Common-Mode Input Voltage Range
+21.0
–20.8
(V+) – 2.0
(V-) + 2.0
V (min)
V (min)
VS = ±22V
3
www.national.com
LME49860
Units
(Limits)
Symbol
Parameter
Conditions
Typical
Limit
(Note 6)
(Note 7)
VS = ±18V
120
dB
-12V ≤ VCM ≤ 12V
VS = ±22V
CMRR
Common-Mode Rejection
120
110
dB (min)
-15V ≤ VCM ≤ 15V
Differential Input Impedance
30
kΩ
ZIN
Common Mode Input Impedance
–10V<Vcm<10V
VS = ±18V
1000
MΩ
–12V≤Vout≤12V
RL = 600Ω
RL = 2kΩ
140
140
140
dB
dB
dB
RL = 10kΩ
AVOL
Open Loop Voltage Gain
VS = ±22V
–15V≤Vout≤15V
RL = 600Ω
RL = 2kΩ
125
140
140
140
dB (min)
dB
RL = 10kΩ
dB
RL = 600Ω
VS = ±18V
VS = ±22V
±16.7
±20.4
V
±19.0
V (min)
RL = 2kΩ
VOUTMAX
Maximum Output Voltage Swing
VS = ±18V
±17.0
±21.0
V
V
VS = ±22V
RL = 10kΩ
VS = ±18V
VS = ±22V
±17.1
±21.2
V
V
RL = 600Ω
VS = ±20V
VS = ±22V
IOUT
Output Current
±31
±37
mA
mA (min)
±30
+53
–42
IOUT-CC
Instantaneous Short Circuit Current
mA
fIN = 10kHz
Closed-Loop
Open-Loop
ROUT
CLOAD
IS
Output Impedance
0.01
13
Ω
Capacitive Load Drive Overshoot
Total Quiescent Current
100pF
16
%
IOUT = 0mA
VS = ±18V
VS = ±22V
10.2
10.5
mA
mA (max)
13
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur.
Note 2: Operating Ratings indicate conditions for which the device is functional, but do not guarantee specific performance limits. For guaranteed specifications
and test conditions, see the Electrical Characteristics. The guaranteed specifications apply only for the test conditions listed. Some performance characteristics
may degrade when the device is not operated under the listed test conditions.
Note 3: Amplifier output connected to GND, any number of amplifiers within a package.
Note 4: Human body model, 100pF discharged through a 1.5kΩ resistor.
Note 5: Machine Model ESD test is covered by specification EIAJ IC-121-1981. A 200pF cap is charged to the specified voltage and then discharged directly into
the IC with no external series resistor (resistance of discharge path must be under 50Ω).
Note 6: Typical specifications are specified at +25ºC and represent the most likely parametric norm.
Note 7: Tested limits are guaranteed to National's AOQL (Average Outgoing Quality Level).
Note 8: PSRR is measured as follows: For VS = ±22V, VOS is measured at two supply voltages, ±7V and ±22V. PSRR = | 20log(ΔVOS/ΔVS) |.
www.national.com
4
Typical Performance Characteristics
THD+N vs Output Voltage
VCC = 15V, VEE = –15V
THD+N vs Output Voltage
VCC = 12V, VEE = –12V
RL = 2kΩ
RL = 2kΩ
202151k6
202151k7
THD+N vs Output Voltage
VCC = 22V, VEE = –22V
THD+N vs Output Voltage
VCC = 2.5V, VEE = –2.5V
RL = 2kΩ
RL = 2kΩ
202151k8
202151i4
THD+N vs Output Voltage
VCC = 15V, VEE = –15V
THD+N vs Output Voltage
VCC = 12V, VEE = –12V
RL = 600Ω
RL = 600Ω
202151k9
202151l0
5
www.national.com
THD+N vs Output Voltage
VCC = 22V, VEE = –22V
THD+N vs Output Voltage
VCC = 2.5V, VEE = –2.5V
RL = 600Ω
RL = 600Ω
202151l1
202151i6
THD+N vs Output Voltage
VCC = 15V, VEE = –15V
THD+N vs Output Voltage
VCC = 12V, VEE = –12V
RL = 10kΩ
RL = 10kΩ
202151l2
202151l3
THD+N vs Output Voltage
VCC = 22V, VEE = –22V
THD+N vs Output Voltage
VCC = 2.5V, VEE = –2.5V
RL = 10kΩ
RL = 10kΩ
202151l4
202151i5
www.national.com
6
THD+N vs Frequency
VCC = 15V, VEE = –15V, VOUT = 3VRMS
THD+N vs Frequency
VCC = 12V, VEE = –12V, VOUT = 3VRMS
RL = 2kΩ
RL = 2kΩ
20215163
20215162
THD+N vs Frequency
VCC = 22V, VEE = –22V, VOUT = 3VRMS
THD+N vs Frequency
VCC = 15V, VEE = –15V, VOUT = 3VRMS
RL = 2kΩ
RL = 600Ω
20215164
20215159
THD+N vs Frequency
VCC = 12V, VEE = –12V, VOUT = 3VRMS
THD+N vs Frequency
VCC = 22V, VEE = –22V, VOUT = 3VRMS
RL = 600Ω
RL = 600Ω
202151k3
20215160
7
www.national.com
THD+N vs Frequency
VCC = 15V, VEE = –15V, VOUT = 3VRMS
THD+N vs Frequency
VCC = 12V, VEE = –12V, VOUT = 3VRMS
RL = 10kΩ
RL = 10kΩ
20215167
20215166
THD+N vs Frequency
VCC = 22V, VEE = –22V, VOUT = 3VRMS
IMD vs Output Voltage
VCC = 15V, VEE = –15V
RL = 10kΩ
RL = 2kΩ
20215168
202151e6
IMD vs Output Voltage
VCC = 12V, VEE = –12V
IMD vs Output Voltage
VCC = 22V, VEE = –22V
RL = 2kΩ
RL = 2kΩ
202151e5
202151e7
www.national.com
8
IMD vs Output Voltage
VCC = 2.5V, VEE = –2.5V
IMD vs Output Voltage
VCC = 15V, VEE = –15V
RL = 2kΩ
RL = 600Ω
202151e2
202151e3
202151f1
202151e4
202151e0
202151e1
IMD vs Output Voltage
VCC = 12V, VEE = –12V
IMD vs Output Voltage
VCC = 22V, VEE = –22V
RL = 600Ω
RL = 600Ω
IMD vs Output Voltage
VCC = 2.5V, VEE = –2.5V
IMD vs Output Voltage
VCC = 15V, VEE = –15V
RL = 600Ω
RL = 10kΩ
9
www.national.com
IMD vs Output Voltage
VCC = 12V, VEE = –12V
IMD vs Output Voltage
VCC = 22V, VEE = –22V
RL = 10kΩ
RL = 10kΩ
202151f0
202151f2
IMD vs Output Voltage
VCC = 2.5V, VEE = –2.5V
Voltage Noise Density vs Frequency
RL = 10kΩ
202151h6
202151l6
Current Noise Density vs Frequency
Crosstalk vs Frequency
VCC = 15V, VEE = –15V, VOUT = 3VRMS
AV = 0dB, RL = 2kΩ
202151h7
202151c8
www.national.com
10
Crosstalk vs Frequency
VCC = 15V, VEE = –15V, VOUT = 10VRMS
Crosstalk vs Frequency
VCC = 12V, VEE = –12V, VOUT = 3VRMS
AV = 0dB, RL = 2kΩ
AV = 0dB, RL = 2kΩ
202151c9
202151c6
Crosstalk vs Frequency
VCC = 12V, VEE = –12V, VOUT = 10VRMS
Crosstalk vs Frequency
VCC = 22V, VEE = –22V, VOUT = 3VRMS
AV = 0dB, RL = 2kΩ
AV = 0dB, RL = 2kΩ
202151c7
202151d0
Crosstalk vs Frequency
VCC = 22V, VEE = –22V, VOUT = 10VRMS
Crosstalk vs Frequency
VCC = 2.5V, VEE = –2.5V, VOUT = 1VRMS
AV = 0dB, RL = 2kΩ
AV = 0dB, RL = 2kΩ
202151d1
202151n8
11
www.national.com
Crosstalk vs Frequency
VCC = 15V, VEE = –15V, VOUT = 3VRMS
Crosstalk vs Frequency
VCC = 15V, VEE = –15V, VOUT = 10VRMS
AV = 0dB, RL = 600Ω
AV = 0dB, RL = 600Ω
202151d6
202151d7
Crosstalk vs Frequency
VCC = 12V, VEE = –12V, VOUT = 3VRMS
Crosstalk vs Frequency
VCC = 12V, VEE = –12V, VOUT = 10VRMS
AV = 0dB, RL = 600Ω
AV = 0dB, RL = 600Ω
202151d4
202151d5
Crosstalk vs Frequency
VCC = 22V, VEE = –22V, VOUT = 3VRMS
Crosstalk vs Frequency
VCC = 22V, VEE = –22V, VOUT = 10VRMS
AV = 0dB, RL = 600Ω
AV = 0dB, RL = 600Ω
202151d8
202151d9
www.national.com
12
Crosstalk vs Frequency
VCC = 2.5V, VEE = –2.5V, VOUT = 1VRMS
Crosstalk vs Frequency
VCC = 15V, VEE = –15V, VOUT = 3VRMS
AV = 0dB, RL = 600Ω
AV = 0dB, RL = 10kΩ
202151d2
202151o0
Crosstalk vs Frequency
VCC = 15V, VEE = –15V, VOUT = 10VRMS
Crosstalk vs Frequency
VCC = 12V, VEE = –12V, VOUT = 3VRMS
AV = 0dB, RL = 10kΩ
AV = 0dB, RL = 10kΩ
202151n7
202151n9
Crosstalk vs Frequency
VCC = 12V, VEE = –12V, VOUT = 10VRMS
Crosstalk vs Frequency
VCC = 22V, VEE = –22V, VOUT = 3VRMS
AV = 0dB, RL = 10kΩ
AV = 0dB, RL = 10kΩ
202151n6
202151n5
13
www.national.com
Crosstalk vs Frequency
VCC = 22V, VEE = –22V, VOUT = 10VRMS
Crosstalk vs Frequency
VCC = 2.5V, VEE = –2.5V, VOUT = 1VRMS
AV = 0dB, RL = 10kΩ
AV = 0dB, RL = 10kΩ
202151n3
202151n4
PSRR+ vs Frequency
VCC = 15V, VEE = –15V
PSRR- vs Frequency
VCC = 15V, VEE = –15V
RL = 2kΩ, VRIPPLE = 200mVpp
RL = 2kΩ, VRIPPLE = 200mVpp
202151o1
202151n2
PSRR+ vs Frequency
VCC = 12V, VEE = –12V
PSRR- vs Frequency
VCC = 12V, VEE = –12V
RL = 2kΩ, VRIPPLE = 200mVpp
RL = 2kΩ, VRIPPLE = 200mVpp
202151n1
202151n0
www.national.com
14
PSRR+ vs Frequency
VCC = 22V, VEE = –22V
PSRR- vs Frequency
VCC = 22V, VEE = –22V
RL = 2kΩ, VRIPPLE = 200mVpp
RL = 2kΩ, VRIPPLE = 200mVpp
202151m9
202151o3
PSRR+ vs Frequency
VCC = 2.5V, VEE = –2.5V
PSRR- vs Frequency
VCC = 2.5V, VEE = –2.5V
RL = 2kΩ, VRIPPLE = 200mVpp
RL = 2kΩ, VRIPPLE = 200mVpp
202151o6
202151m8
PSRR+ vs Frequency
VCC = 15V, VEE = –15V
PSRR- vs Frequency
VCC = 15V, VEE = –15V
RL = 600Ω, VRIPPLE = 200mVpp
RL = 600Ω, VRIPPLE = 200mVpp
202151o7
202151o2
15
www.national.com
PSRR+ vs Frequency
VCC = 12V, VEE = –12V
PSRR- vs Frequency
VCC = 12V, VEE = –12V
RL = 600Ω, VRIPPLE = 200mVpp
RL = 600Ω, VRIPPLE = 200mVpp
202151m7
202151o4
PSRR+ vs Frequency
VCC = 22V, VEE = –22V
PSRR- vs Frequency
VCC = 22V, VEE = –22V
RL = 600Ω, VRIPPLE = 200mVpp
RL = 600Ω, VRIPPLE = 200mVpp
202151o5
202151m6
PSRR+ vs Frequency
VCC = 2.5V, VEE = –2.5V
PSRR- vs Frequency
VCC = 2.5V, VEE = –2.5V
RL = 600Ω, VRIPPLE = 200mVpp
RL = 600Ω, VRIPPLE = 200mVpp
202151m5
202151m4
www.national.com
16
PSRR+ vs Frequency
VCC = 15V, VEE = –15V
PSRR- vs Frequency
VCC = 15V, VEE = –15V
RL = 10kΩ, VRIPPLE = 200mVpp
RL = 10kΩ, VRIPPLE = 200mVpp
202151m2
202151m3
PSRR+ vs Frequency
VCC = 12V, VEE = –12V
PSRR- vs Frequency
VCC = 12V, VEE = –12V
RL = 10kΩ, VRIPPLE = 200mVpp
RL = 10kΩ, VRIPPLE = 200mVpp
202151m1
202151m0
PSRR+ vs Frequency
VCC = 22V, VEE = –22V
PSRR- vs Frequency
VCC = 22V, VEE = –22V
RL = 10kΩ, VRIPPLE = 200mVpp
RL = 10kΩ, VRIPPLE = 200mVpp
202151l9
202151l8
17
www.national.com
PSRR+ vs Frequency
VCC = 2.5V, VEE = –2.5V
PSRR- vs Frequency
VCC = 2.5V, VEE = –2.5V
RL = 10kΩ, VRIPPLE = 200mVpp
RL = 10kΩ, VRIPPLE = 200mVpp
202151l7
202151l5
CMRR vs Frequency
VCC = 15V, VEE = –15V
CMRR vs Frequency
VCC = 12V, VEE = –12V
RL = 2kΩ
RL = 2kΩ
202151f7
202151g0
CMRR vs Frequency
VCC = 22V, VEE = –22V
CMRR vs Frequency
VCC = 2.5V, VEE = –2.5V
RL = 2kΩ
RL = 2kΩ
202151g3
202151f4
www.national.com
18
CMRR vs Frequency
VCC = 15V, VEE = –15V
CMRR vs Frequency
VCC = 12V, VEE = –12V
RL = 600Ω
RL = 600Ω
202151o9
202151f9
202151f6
202151f8
CMRR vs Frequency
VCC = 22V, VEE = –22V
CMRR vs Frequency
VCC = 2.5V, VEE = –2.5V
RL = 600Ω
RL = 600Ω
202151g5
CMRR vs Frequency
VCC = 15V, VEE = –15V
CMRR vs Frequency
VCC = 12V, VEE = –12V
RL = 10kΩ
RL = 10kΩ
202151o8
19
www.national.com
CMRR vs Frequency
VCC = 22V, VEE = –22V
CMRR vs Frequency
VCC = 2.5V, VEE = –2.5V
RL = 10kΩ
RL = 10kΩ
202151g4
202151f5
Output Voltage vs Load Resistance
VCC = 15V, VEE = –15V
THD+N = 1%
Output Voltage vs Load Resistance
VCC = 12V, VEE = –12V
THD+N = 1%
202151h0
202151h1
Output Voltage vs Load Resistance
VCC = 22V, VEE = –22V
THD+N = 1%
Output Voltage vs Load Resistance
VCC = 2.5V, VEE = –2.5V
THD+N = 1%
202151h2
202151g9
www.national.com
20
Output Voltage vs Total Power Supply Voltage
Output Voltage vs Total Power Supply Voltage
RL = 2kΩ, THD+N = 1%
RL = 600Ω, THD+N = 1%
20215107
20215109
Output Voltage vs Total Power Supply Voltage
Power Supply Current vs Total Power Supply Voltage
RL = 10kΩ, THD+N = 1%
RL = 2kΩ
20215108
20215104
Power Supply Current vs Total Power Supply Voltage
Power Supply Current vs Total Power Supply Voltage
RL = 600Ω
RL = 10kΩ
20215106
20215105
21
www.national.com
Full Power Bandwidth vs Frequency
Gain Phase vs Frequency
202151j0
202151j1
Small-Signal Transient Response
AV = 1, CL = 10pF
Small-Signal Transient Response
AV = 1, CL = 100pF
202151i7
202151i8
www.national.com
22
inputs changes the amplifier’s noise gain. The result is that
the error signal (distortion) is amplified by a factor of 101. Al-
though the amplifier’s closed-loop gain is unaltered, the feed-
back available to correct distortion errors is reduced by 101,
which means that measurement resolution increases by 101.
To ensure minimum effects on distortion measurements,
keep the value of R1 low as shown in Figure 1.
Application Information
DISTORTION MEASUREMENTS
The vanishingly low residual distortion produced by
LME49860 is below the capabilities of all commercially avail-
able equipment. This makes distortion measurements just
slightly more difficult than simply connecting a distortion me-
ter to the amplifier’s inputs and outputs. The solution, how-
ever, is quite simple: an additional resistor. Adding this
resistor extends the resolution of the distortion measurement
equipment.
This technique is verified by duplicating the measurements
with high closed loop gain and/or making the measurements
at high frequencies. Doing so produces distortion compo-
nents that are within the measurement equipment’s capabili-
ties. This datasheet’s THD+N and IMD values were generat-
ed using the above described circuit connected to an Audio
Precision System Two Cascade.
The LME49860’s low residual distortion is an input referred
internal error. As shown in Figure 1, adding the 10Ω resistor
connected between the amplifier’s inverting and non-inverting
202151k4
FIGURE 1. THD+N and IMD Distortion Test Circuit
23
www.national.com
The LME49860 is a high speed op amp with excellent phase
margin and stability. Capacitive loads up to 100pF will cause
little change in the phase characteristics of the amplifiers and
are therefore allowable.
a resistor in series with the output. This resistor will also pre-
vent excess power dissipation if the output is accidentally
shorted.
Capacitive loads greater than 100pF must be isolated from
the output. The most straightforward way to do this is to put
20215127
Complete shielding is required to prevent induced pick up from external sources. Always check with oscilloscope for power line noise.
Noise Measurement Circuit
Total Gain: 115 dB @f = 1 kHz
Input Referred Noise Voltage: en = V0/560,000 (V)
RIAA Preamp Voltage Gain, RIAA
Deviation vs Frequency
Flat Amp Voltage Gain vs
Frequency
20215128
20215129
www.national.com
24
TYPICAL APPLICATIONS
NAB Preamp
NAB Preamp Voltage Gain
vs Frequency
20215131
20215130
AV = 34.5
F = 1 kHz
En = 0.38 μV
A Weighted
Balanced to Single Ended Converter
Adder/Subtracter
20215133
VO = V1 + V2 − V3 − V4
20215132
VO = V1–V2
Sine Wave Oscillator
20215134
25
www.national.com
Second Order High Pass Filter
(Butterworth)
Second Order Low Pass Filter
(Butterworth)
20215135
20215136
Illustration is f0 = 1 kHz
Illustration is f0 = 1 kHz
State Variable Filter
20215137
Illustration is f0 = 1 kHz, Q = 10, ABP = 1
www.national.com
26
AC/DC Converter
20215138
2 Channel Panning Circuit (Pan Pot)
Line Driver
20215139
20215140
27
www.national.com
Tone Control
20215141
Illustration is:
fL = 32 Hz, fLB = 320 Hz
fH =11 kHz, fHB = 1.1 kHz
20215142
RIAA Preamp
20215103
Av = 35 dB
En = 0.33 μV
S/N = 90 dB
f = 1 kHz
A Weighted
A Weighted, VIN = 10 mV
www.national.com
28
@f = 1 kHz
Balanced Input Mic Amp
20215143
Illustration is:
V0 = 101(V2 − V1)
29
www.national.com
10 Band Graphic Equalizer
20215144
fo (Hz)
32
C1
C2
R1
R2
0.12μF
0.056μF
0.033μF
0.015μF
8200pF
3900pF
2000pF
1100pF
510pF
4.7μF
3.3μF
75kΩ
68kΩ
62kΩ
68kΩ
62kΩ
68kΩ
68kΩ
62kΩ
68kΩ
51kΩ
500Ω
510Ω
510Ω
470Ω
470Ω
470Ω
470Ω
470Ω
510Ω
510Ω
64
125
250
500
1k
1.5μF
0.82μF
0.39μF
0.22μF
0.1μF
2k
4k
0.056μF
0.022μF
0.012μF
8k
16k
330pF
Note 9: At volume of change = ±12 dB
ꢀꢀQ = 1.7
ꢀꢀReference: “AUDIO/RADIO HANDBOOK”, National Semiconductor, 1980, Page 2–61
www.national.com
30
Revision History
Rev
1.0
Date
Description
06/01/07
06/11/07
Initial release.
1.1
Added the LME49860MA and LME49860NA Top Mark Information.
31
www.national.com
Physical Dimensions inches (millimeters) unless otherwise noted
Narrow SOIC Package
Order Number LME49860MA
NS Package Number M08A
Dual-In-Line Package
Order Number LME49860NA
NS Package Number N08E
www.national.com
32
Notes
33
www.national.com
Notes
THE CONTENTS OF THIS DOCUMENT ARE PROVIDED IN CONNECTION WITH NATIONAL SEMICONDUCTOR CORPORATION
(“NATIONAL”) PRODUCTS. NATIONAL MAKES NO REPRESENTATIONS OR WARRANTIES WITH RESPECT TO THE ACCURACY
OR COMPLETENESS OF THE CONTENTS OF THIS PUBLICATION AND RESERVES THE RIGHT TO MAKE CHANGES TO
SPECIFICATIONS AND PRODUCT DESCRIPTIONS AT ANY TIME WITHOUT NOTICE. NO LICENSE, WHETHER EXPRESS,
IMPLIED, ARISING BY ESTOPPEL OR OTHERWISE, TO ANY INTELLECTUAL PROPERTY RIGHTS IS GRANTED BY THIS
DOCUMENT.
TESTING AND OTHER QUALITY CONTROLS ARE USED TO THE EXTENT NATIONAL DEEMS NECESSARY TO SUPPORT
NATIONAL’S PRODUCT WARRANTY. EXCEPT WHERE MANDATED BY GOVERNMENT REQUIREMENTS, TESTING OF ALL
PARAMETERS OF EACH PRODUCT IS NOT NECESSARILY PERFORMED. NATIONAL ASSUMES NO LIABILITY FOR
APPLICATIONS ASSISTANCE OR BUYER PRODUCT DESIGN. BUYERS ARE RESPONSIBLE FOR THEIR PRODUCTS AND
APPLICATIONS USING NATIONAL COMPONENTS. PRIOR TO USING OR DISTRIBUTING ANY PRODUCTS THAT INCLUDE
NATIONAL COMPONENTS, BUYERS SHOULD PROVIDE ADEQUATE DESIGN, TESTING AND OPERATING SAFEGUARDS.
EXCEPT AS PROVIDED IN NATIONAL’S TERMS AND CONDITIONS OF SALE FOR SUCH PRODUCTS, NATIONAL ASSUMES NO
LIABILITY WHATSOEVER, AND NATIONAL DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY RELATING TO THE SALE
AND/OR USE OF NATIONAL PRODUCTS INCLUDING LIABILITY OR WARRANTIES RELATING TO FITNESS FOR A PARTICULAR
PURPOSE, MERCHANTABILITY, OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY
RIGHT.
LIFE SUPPORT POLICY
NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR
SYSTEMS WITHOUT THE EXPRESS PRIOR WRITTEN APPROVAL OF THE CHIEF EXECUTIVE OFFICER AND GENERAL
COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein:
Life support devices or systems are devices which (a) are intended for surgical implant into the body, or (b) support or sustain life and
whose failure to perform when properly used in accordance with instructions for use provided in the labeling can be reasonably expected
to result in a significant injury to the user. A critical component is any component in a life support device or system whose failure to perform
can be reasonably expected to cause the failure of the life support device or system or to affect its safety or effectiveness.
National Semiconductor and the National Semiconductor logo are registered trademarks of National Semiconductor Corporation. All other
brand or product names may be trademarks or registered trademarks of their respective holders.
Copyright© 2007 National Semiconductor Corporation
For the most current product information visit us at www.national.com
National Semiconductor
Americas Customer
Support Center
National Semiconductor Europe
Customer Support Center
Fax: +49 (0) 180-530-85-86
National Semiconductor Asia
Pacific Customer Support Center
Email: ap.support@nsc.com
National Semiconductor Japan
Customer Support Center
Fax: 81-3-5639-7507
Email:
new.feedback@nsc.com
Tel: 1-800-272-9959
Email: europe.support@nsc.com
Deutsch Tel: +49 (0) 69 9508 6208
English Tel: +49 (0) 870 24 0 2171
Français Tel: +33 (0) 1 41 91 8790
Email: jpn.feedback@nsc.com
Tel: 81-3-5639-7560
www.national.com
相关型号：
LME49870MA/NOPB
44V Single High Performance, High Fidelity Audio Operational Amplifier 8-SOIC -40 to 85
TI
©2020 ICPDF网 联系我们和版权申明