LME49870
www.ti.com
SNAS413C – SEPTEMBER 2007 – REVISED APRIL 2013
LME49870 44V Single High Performance, High Fidelity Audio Operational Amplifier
Check for Samples: LME49870
FEATURES
DESCRIPTION
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The LME49870 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 LME49870 audio operational
amplifier delivers superior audio signal amplification
for outstanding audio performance. The LME49870
combines extremely low voltage noise density
(2.7nV/√Hz) with vanishingly low THD+N (0.00003%)
to easily satisfy the most demanding audio
applications. To ensure that the most challenging
loads are driven without compromise, the LME49870
has a high slew rate of ±20V/μs and an output current
capability 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.
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Easily Drives 600Ω Loads
Optimized for Superior Audio Signal Fidelity
Output Short Circuit Protection
PSRR and CMRR Exceed 120dB (Typ)
APPLICATIONS
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High Quality Audio Amplification
High Fidelity Preamplifiers, Phono Preamps,
and Multimedia
High Performance Professional Audio
High Fidelity Equalization and Crossover
Networks with Active Filters
High Performance Line Drivers and Receivers
Low Noise Industrial Applications Including
Test, Measurement, and Ultrasound
KEY SPECIFICATIONS
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Power Supply Voltage Range: ±2.5V to ±22V
THD+N (AV = 1, VOUT = 3VRMS, fIN = 1kHz)
– RL = 2kΩ: 0.00003% (Typ)
– RL = 600Ω: 0.00003% (Typ)
Input Noise Density: 2.7nV/√Hz (Typ)
Slew Rate: ±20V/μs (Typ)
Gain Bandwidth Product: 55MHz (Typ)
Open Loop Gain (RL = 600Ω): 140dB (Typ)
Input Bias Current: 10nA (Typ)
Input Offset Voltage: 0.1mV (Typ)
DC Gain Linearity Error: 0.000009%
The LME49870's outstanding CMRR (120dB), PSRR
(120dB), and VOS (0.1mV) give the amplifier excellent
operational amplifier DC performance.
The LME49870 has a wide supply range of ±2.5V to
±22V. Over this supply range the LME49870
maintains excellent common-mode rejection, power
supply rejection, and low input bias current. The
LME49870 is unity gain stable. This Audio
Operational Amplifier achieves outstanding AC
performance while driving complex loads with values
as high as 100pF.
The LME49870 is available in 8–lead narrow body
SOIC. Demonstration boards are available for each
package.
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Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2007–2013, Texas Instruments Incorporated
LME49870
SNAS413C – SEPTEMBER 2007 – REVISED APRIL 2013
www.ti.com
TYPICAL APPLICATION
150:
3320:
150:
3320:
26.1 k:
+
909:
-
-
LME49870
+
INPUT
LME49870
22 nF//4.7 nF//500 pF
10 pF
47 k:
+
3.83 k:
+
100:
OUTPUT
47 nF//33 nF
Note: 1% metal film resistors, 5% polypropylene capacitors
Figure 1. Passively Equalized RIAA Phono Preamplifier
CONNECTION DIAGRAM
NC
-IN
+IN
V-
NC
-
V+
+
VOUT
NC
Figure 2. Package Number — D0008A
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
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Copyright © 2007–2013, Texas Instruments Incorporated
Product Folder Links: LME49870
LME49870
www.ti.com
SNAS413C – SEPTEMBER 2007 – REVISED APRIL 2013
ABSOLUTE MAXIMUM RATINGS (1) (2) (3)
Power Supply Voltage (VS = V+ - V-)
46V
−65°C to 150°C
Storage Temperature
Input Voltage
(V-) - 0.7V to (V+) + 0.7V
Output Short Circuit (4)
Continuous
Power Dissipation
Internally Limited
ESD Rating (5)
ESD Rating (6)
2000V
Pins 1, 4, 7 and 8
200V
Pins 2, 3, 5 and 6
100V
Junction Temperature
Thermal Resistance
(1)
(2)
(3)
(4)
(5)
(6)
150°C
θJA (SO)
145°C/W
“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.
The Electrical Characteristics tables list ensured 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 ensured
If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/ Distributors for availability and
specifications.
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.
Human body model, applicable std. JESD22-A114C.
Machine model, applicable std. JESD22-A115-A.
OPERATING RATINGS
Temperature Range (TMIN ≤ TA ≤ TMAX)
−40°C ≤ TA ≤ 85°C
±2.5V ≤ VS ≤ ±22V
Supply Voltage Range
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Product Folder Links: LME49870
3
LME49870
SNAS413C – SEPTEMBER 2007 – REVISED APRIL 2013
www.ti.com
ELECTRICAL CHARACTERISTICS FOR THE LME49870 (1)
The following specifications apply for VS = ±18V and ±22V, RL = 2kΩ, RSOURCE = 10Ω, fIN = 1kHz, TA = 25°C, unless otherwise
specified.
Symbol
THD+N
Parameter
Total Harmonic Distortion + Noise
Conditions
LME49870
Typical (2)
Limit (3)
AV = 1, VOUT = 3Vrms
RL = 2kΩ
RL = 600Ω
0.00003
0.00003
0.00009
AV = 1, VOUT = 3VRMS
Two-tone, 60Hz & 7kHz 4:1
0.00005
Units
(Limits)
% (max)
IMD
Intermodulation Distortion
GBWP
Gain Bandwidth Product
55
45
MHz (min)
SR
Slew Rate
±20
±15
V/μs (min)
FPBW
Full Power Bandwidth
VOUT = 1VP-P, –3dB
referenced to output magnitude
at f = 1kHz
10
MHz
ts
Settling time
AV = –1, 10V step, CL = 100pF
0.1% error range
1.2
μs
Equivalent Input Noise Voltage
fBW = 20Hz to 20kHz
0.34
0.65
Equivalent Input Noise Density
f = 1kHz
f = 10Hz
2.5
6.4
4.7
in
Current Noise Density
f = 1kHz
f = 10Hz
1.6
3.1
VOS
Offset Voltage
ΔVOS/ΔTemp
Average Input Offset Voltage Drift vs
Temperature
–40°C ≤ TA ≤ 85°C
PSRR
Average Input Offset Voltage Shift vs
Power Supply Voltage
VS = ±18V, ΔVS = 24V
VS = ±22V, ΔVS = 30V
IB
Input Bias Current
ΔIOS/ΔTemp
IOS
en
VIN-CM
CMRR
ZIN
(1)
(2)
(3)
(4)
4
VS = ±18V
±0.12
VS = ±22V
±0.14
%
mV (max)
±0.7
110
VCM = 0V
10
72
Input Bias Current Drift vs
Temperature
–40°C ≤ TA ≤ 85°C
0.2
Input Offset Current
VCM = 0V
11
VS = ±18V
+17.1
–16.9
VS = ±22V
+21.0
–20.8
Common-Mode Rejection
VS = ±18V, –12V≤Vcm≤12V
120
VS = ±22V, –15V≤Vcm≤15V
120
Differential Input Impedance
Common Mode Input Impedance
–10V