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LME49720
SNAS393D – MARCH 2007 – REVISED NOVEMBER 2016
LME49720 Dual High Performance, High Fidelity Audio Operational Amplifier
1 Features
3 Description
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•
•
•
•
•
The LME49720 device 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 LME49720 audio
operational amplifiers deliver superior audio signal
amplification for outstanding audio performance. The
LME49720 combines extremely low voltage noise
density (2.7nV/√Hz) with vanishingly low THD+N
(0.00003%) to easily satisfy the most demanding
audio applications.
1
Easily Drives 600Ω Loads
Optimized for Superior Audio Signal Fidelity
Output Short Circuit Protection
PSRR and CMRR Exceed 120dB (typ)
SOIC, PDIP, TO-99 Metal Can Packages
Key Specifications
– Power Supply Voltage Range: ±2.5 to ±17V
– 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%
Device Information(1)
PART NUMBER
LME49720
PACKAGE
BODY SIZE (NOM)
TO-99 (8)
9.08mm × 9.08mm
SOIC (8)
4.90mm × 3.91mm
PDIP (8)
9.81mm × 6.35mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
2 Applications
•
•
•
•
•
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Ultra High Quality Audio Amplification
High Fidelity Preamplifiers
High Fidelity Multimedia
State of the Art Phono Pre Amps
High Performance Professional Audio
High Fidelity Equalization and Crossover
Networks
High Performance Line Drivers
High Performance Line Receivers
High Fidelity Active Filters
Passively Equalized RIAA Phono Preamplifier
3320:
26.1 k:
+
909:
-
LME49720
LME49720
+
22 n F//4.7 nF//500 pF
+
-
INPUT
150:
3320:
150:
10 pF
47 k:
3.83 k:
+
100 :
OUTPUT
47 nF//33 nF
Note: 1% metal film resistors, 5% polypropylene capacitors
Copyright © 2016, Texas Instruments Incorporated
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.
LME49720
SNAS393D – MARCH 2007 – REVISED NOVEMBER 2016
www.ti.com
Table of Contents
1
2
3
4
5
6
7
Features ..................................................................
Applications ...........................................................
Description .............................................................
Revision History.....................................................
Device Comparison Table.....................................
Pin Configuration and Functions .........................
Specifications.........................................................
1
1
1
2
3
3
4
7.1
7.2
7.3
7.4
7.5
7.6
4
4
4
4
5
6
Absolute Maximum Ratings ......................................
ESD Ratings..............................................................
Recommended Operating Conditions.......................
Thermal Information ..................................................
Electrical Characteristics ..........................................
Typical Characteristics ..............................................
8
Parameter Measurement Information ................ 24
9
Detailed Description ............................................ 26
8.1 Distortion Measurements ........................................ 24
9.1 Overview ................................................................. 26
9.2 Functional Block Diagram ....................................... 26
9.3 Feature Description................................................. 26
9.4 Device Functional Modes........................................ 27
10 Application and Implementation........................ 27
10.1 Application Information.......................................... 27
10.2 Typical Applications .............................................. 27
11 Power Supply Recommendations ..................... 35
11.1 Power Supply Decoupling Capacitors .................. 35
12 Layout................................................................... 36
12.1 Layout Guidelines ................................................. 36
12.2 Layout Example .................................................... 36
13 Device and Documentation Support ................. 39
13.1
13.2
13.3
13.4
13.5
Receiving Notification of Documentation Updates
Community Resources..........................................
Trademarks ...........................................................
Electrostatic Discharge Caution ............................
Glossary ................................................................
39
39
39
39
39
14 Mechanical, Packaging, and Orderable
Information ........................................................... 39
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision C (April 2013) to Revision D
Page
•
Added Device Information table, ESD Ratings table, Feature Description section, Device Functional Modes, Power
Supply Recommendations section, Layout section, Device and Documentation Support section, and Mechanical,
Packaging, and Orderable Information section. ..................................................................................................................... 1
•
Changed RθJA values for D and P packages from 145 °C/W to 107.9 °C/W (D) and from 102 °C/W to 72.9 °C/W (P)
in the Thermal Information table............................................................................................................................................. 4
2
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Copyright © 2007–2016, Texas Instruments Incorporated
Product Folder Links: LME49720
LME49720
www.ti.com
SNAS393D – MARCH 2007 – REVISED NOVEMBER 2016
5 Device Comparison Table
Device Number
Amplifier Type
Number of Channel
Output Current
(mA)
Input Noise Density
(nV/rtHz)
THD+N (%)
LME49710
Audio Operational
1
37
2.5
0.00003
LME49720
Audio Operational
2
26
2.7
0.00003
LME49721
Audio Operational
2
100
4
0.0002
LME49723
Audio Operational
2
25
3.2
0.0002
6 Pin Configuration and Functions
D Package
8 Pin SOIC
Top View
P Packages
8 Pin PDIP
Top View
Output A
1
8
V+
InputA -
2
7
Output B
InputA +
3
6
InputB -
V-
4
5
InputB +
Output A
1
8
V+
InputA -
2
7
Output B
InputA +
3
6
Input B-
V-
4
5
Input B+
LMC Package
8 Lead TO-99
+
V
8
OUTPUT A
INVERTING
INPUT A
1
2
NON-INVERTING
INPUT A
OUTPUT B
7
6
3
5
INVERTING
INPUT B
NON-INVERTING
INPUT B
4
V
-
Pin Functions
PIN
NAME
I/O
DESCRIPTION
SOIC
PDIP
TO-99
V+
8
8
8
-
Positive supply voltage
V-
4
4
4
-
Negative supply voltage
InputA-
2
2
2
I
Negative audio input
InputA+
3
3
3
I
Positive audio input
Output A
1
1
1
O
Audio output A
InputB–
6
6
6
I
Negative audio input
InputB+
5
5
5
I
Positive audio input
Output B
7
7
7
O
Audio output B
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Copyright © 2007–2016, Texas Instruments Incorporated
Product Folder Links: LME49720
3
LME49720
SNAS393D – MARCH 2007 – REVISED NOVEMBER 2016
www.ti.com
7 Specifications
7.1 Absolute Maximum Ratings
see
(1) (2) (3)
MIN
Input Voltage
(V–) – 0.7V
Output Short Circuit
(4)
TMIN ≤ TA ≤ TMAX
Temperature Range
–40
Supply Voltage Range
±2.5V ≤ VS ≤
± 17V
Storage Temperature
−65
(4)
V
(V+) + 0.7
V
Internally Limited
Junction Temperature
(3)
UNIT
36
Continuous
Power Dissipation
(1)
(2)
MAX
(VS = V+ – V–)
Power Supply Voltage
150
°C
85
°C
V
150
°C
Absolute Maximum Ratings indicate limits beyond which damage to the device may occur.
Operating Ratings indicate conditions for which the device is functional, but do not ensure specific performance limits. For enusred
specifications and test conditions, see Electrical Characteristics. The ensured specifications apply only for the test conditions listed.
Some performance characteristics may degrade when the device is not operated under the listed test conditions.
If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/ Distributors for availability and
specifications.
Amplifier output connected to GND, any number of amplifiers within a package.
7.2 ESD Ratings
VALUE
Human-body model (HBM)
V(ESD)
(1)
Electrostatic discharge
(1)
Machine Model (MM), per EIAJ IC-1211981Application and Implementation
All pins
2000
Pins 1, 4, 7 and 8
200
Pins 2, 3, 5 and 6
100
UNIT
V
Human body model, 100pF discharged through a 1.5kΩ resistor.
7.3 Recommended Operating Conditions
over operating free-air temperature range (unless otherwise noted)
MIN
NOM
MAX
UNIT
V+,V–
Supply voltage
±2.5
±17
V
TA
Operating free-air temperature
–40
85
°C
TJ
Operating junction temperature
–40
150
°C
7.4 Thermal Information
LME49720
THERMAL METRIC
(1)
D
(SOIC)
P
(PDIP)
LMC
(TO-99) (2)
8 PINS
8 PINS
8 PINS
107.9
72.9
150
°C/W
52
77.2
35
°C/W
48.3
44.9
–
°C/W
UNIT
RθJA
Junction-to-ambient thermal resistance
RθJC(top)
Junction-to-case (top) thermal resistance
RθJB
Junction-to-board thermal resistance
ψJT
Junction-to-top characterization parameter
8.2
35.7
–
°C/W
ψJB
Junction-to-board characterization parameter
47.8
49.9
–
°C/W
RθJC(bot)
Junction-to-case (bottom) thermal resistance
N/A
N/A
–
°C/W
(1)
(2)
4
For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application
report.
Thermal performance of a TO-99 package will depend strongly on mounting condition and there is no standard mounting configuration
on a JEDEC PCB for that package type.
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Copyright © 2007–2016, Texas Instruments Incorporated
Product Folder Links: LME49720
LME49720
www.ti.com
SNAS393D – MARCH 2007 – REVISED NOVEMBER 2016
7.5 Electrical Characteristics
The following specifications apply for VS = ±15V, RL = 2kΩ, fIN = 1kHz, and TA = 25°C, unless otherwise specified.
PARAMETER
TEST CONDITIONS
MIN (1)
TYP
(2)
MAX (1)
THD+N
Total harmonic distortion +
noise
AV = 1, VOUT = 3Vrms
RL = 2kΩ
RL = 600Ω
0.00003
0.00003
IMD
Intermodulation distortion
AV = 1, VOUT = 3VRMS
Two-tone, 60Hz & 7kHz 4:1
0.00005
GBWP
Gain bandwidth product
SR
Slew rate
0.00009
45
55
MHz
±15
±20
V/μs
FPBW
Full power bandwidth
ts
Settling time
AV = –1, 10V step, CL = 100pF
0.1% error range
Equivalent input noise voltage
fBW = 20Hz to 20kHz
0.34
0.65
Equivalent input noise density
f = 1kHz
f = 10Hz
2.7
6.4
4.7
in
Current noise density
f = 1kHz
f = 10Hz
1.6
3.1
VOS
Offset voltage
ΔVOS/ΔTe
mp
Average input offset voltage
drift vs temperature
–40°C ≤ TA ≤ 85°C
PSRR
Average input offset voltage
shift vs power supply voltage
ΔVS = 20V
ISOCH-CH
Channel-to-Channel isolation
fIN = 1kHz
fIN = 20kHz
IB
Input bias current
VCM = 0V
ΔIOS/ΔTe
mp
Input bias current drift vs
temperature
–40°C ≤ TA ≤ 85°C
IOS
Input offset current
VCM = 0V
VIN-CM
Common-Mode input voltage
range
CMRR
Common-Mode rejection
Common mode input
impedance
AVOL
Open loop voltage gain
1.2
±0.1
(3)
110
IOUT-CC
ROUT
Output impedance
fIN = 10kHz
Closed-Loop
Open-Loop
CLOAD
Capacitive load drive overshoot
IS
Total quiescent current
μV/°C
dB
118
112
dB
11
72
nA
nA/°C
65
nA
110
120
dB
30
kΩ
RL = 600Ω
Instantaneous short circuit
current
mV
+14.1
–13.9
125
MΩ
140
140
dB
140
±12.5
RL = 2kΩ
±13.6
±14.0
RL = 10kΩ
RL = 600Ω, VS = ±17V
V
1000
–10V
