National Semiconductor LME49870 Technical data

LME49870
44V Single High Performance, High Fidelity Audio
Operational Amplifier

LME49870 44V Single High Performance, High Fidelity Audio Operational Amplifier

January 14, 2008

General Description

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
ishingly 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.

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.

) with van-

Key Specifications

■ Power Supply Voltage Range ±2.5V to ±22V

■ THD+N

(AV = 1, V

OUT

= 3V

, fIN = 1kHz)

RMS

RL = 2kΩ

RL = 600Ω

0.00003% (typ)

0.00003% (typ)

■ Input Noise Density 2.7nV/√Hz (typ)

■ Slew Rate

■ Gain Bandwidth Product

■ Open Loop Gain (R

= 600Ω)

L

■ Input Bias Current

■ Input Offset Voltage

■ DC Gain Linearity Error

Features

Easily drives 600Ω loads

■

Optimized for superior audio signal fidelity

■

Output short circuit protection

■

PSRR and CMRR exceed 120dB (typ)

■

Applications

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

±20V/μs (typ)

55MHz (typ)

140dB (typ)

10nA (typ)

0.1mV (typ)

0.000009%

Typical Application

Passively Equalized RIAA Phono Preamplifier

© 2008 National Semiconductor Corporation 300194 www.national.com

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Connection Diagrams

LME49870

Order Number LME49870MA

30019401

See NS Package Number — M08A

LME49870 Top Mark

N — National Logo

Z — Assembly Plant code

X — 1 Digit Date code

TT — Die Traceability

L49870 — LME49870
MA — Package code

30019402

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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.

Power Supply Voltage
(VS = V+ - V-)

Storage Temperature −65°C to 150°C

Input Voltage

(V-) - 0.7V to (V+) + 0.7V

Output Short Circuit (Note 3) Continuous

Power Dissipation Internally Limited

ESD Rating (Note 4) 2000V

ESD Rating (Note 5)

46V

Pins 1, 4, 7 and 8 200V

Pins 2, 3, 5 and 6 100V

Junction Temperature 150°C

Thermal Resistance

 θJA (SO)

145°C/W

Operating Ratings

Temperature Range

T

≤ TA ≤ T

MIN

MAX

Supply Voltage Range

−40°C ≤ TA ≤ 85°C
±2.5V ≤ VS ≤ ±22V

Electrical Characteristics for the LME49870 (Note 1) The following specifications apply for V

±18V and ±22V, RL = 2kΩ, R

Symbol Parameter Conditions

THD+N Total Harmonic Distortion + Noise

IMD Intermodulation Distortion

= 10Ω, fIN = 1kHz, TA = 25°C, unless otherwise specified.

SOURCE

AV = 1, V

OUT

= 3V

rms

RL = 2kΩ

RL = 600Ω

AV = 1, V

OUT

= 3V

RMS

Two-tone, 60Hz & 7kHz 4:1

LME49870

Typical Limit

(Note 6) (Note 7)

0.00003

0.00003 0.00009

0.00005 %

=

S

Units

(Limits)

% (max)

GBWP Gain Bandwidth Product 55 45 MHz (min)

SR Slew Rate ±20 ±15

V

FPBW Full Power Bandwidth

= 1V

OUT

referenced to output magnitude

P-P

, –3dB

10

V/μs (min)

MHz

at f = 1kHz

t

s

e

n

i

n

V

OS

ΔVOS/ΔTemp

PSRR

I

B

ΔIOS/ΔTemp

I

OS

V

IN-CM

Settling time

Equivalent Input Noise Voltage

Equivalent Input Noise Density

Current Noise Density

Offset Voltage

Average Input Offset Voltage Drift vs

Temperature

Average Input Offset Voltage Shift vs

Power Supply Voltage

AV = –1, 10V step, CL = 100pF

0.1% error range

fBW = 20Hz to 20kHz

f = 1kHz

f = 10Hz

f = 1kHz

f = 10Hz

1.2

0.34 0.65

2.5

6.4

1.6

3.1

VS = ±18V ±0.12 mV (max)

VS = ±22V ±0.14 ±0.7 mV (max)

–40°C ≤ TA ≤ 85°C

VS = ±18V, ΔVS = 24V (Note 8)

VS = ±22V, ΔVS = 30V

0.1

120

120 110

Input Bias Current VCM = 0V 10 72 nA (max)

Input Bias Current Drift vs

Temperature

–40°C ≤ TA ≤ 85°C

0.2

Input Offset Current VCM = 0V 11 65 nA (max)

VS = ±18V

Common-Mode Input Voltage Range

VS = ±22V

+17.1

–16.9

+21.0

–20.8

μs

μV

(max)

4.7

 nV/√Hz

(max)

 pA/√Hz

μV/°C

dB (min)

nA/°C

V (min)

V (min)

RMS

Symbol Parameter Conditions

CMRR Common-Mode Rejection

Z

IN

A

VOL

R

L

V

OUTMAX

Differential Input Impedance

Common Mode Input Impedance –10V<Vcm<10V 1000

Open Loop Voltage Gain

Maximum Output Voltage Swing

VS = ±18V
–12V≤Vcm≤12V

VS = ±22V
–15V≤Vcm≤15V

VS = ±18V
–12V≤Vout≤12V

RL = 600Ω

RL = 2kΩ

RL = 10Ω

VS = ±22V
–15V≤Vout≤15V

RL = 600Ω

RL = 2kΩ

RL = 10Ω

RL = 600Ω

VS = ±18V

VS = ±22V

LME49870

Typical Limit

(Note 6) (Note 7)

Units

(Limits)

120 dB (min)

120 110 dB (min)

30

140

140

140

140

125

140

140

kΩ

MΩ

dB

dB

dB

dB

dB

dB

Typical Performance Characteristics

LME49870

THD+N vs Output Voltage

VCC = 15V, VEE = –15V

RL = 2kΩ

THD+N vs Output Voltage

VCC = 22V, VEE = –22V

RL = 2kΩ

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THD+N vs Output Voltage

VCC = 12V, VEE = –12V

RL = 2kΩ

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THD+N vs Output Voltage

VCC = 2.5V, VEE = –2.5V

RL = 2kΩ

THD+N vs Output Voltage

VCC = 15V, VEE = –15V

RL = 600Ω

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THD+N vs Output Voltage

VCC = 12V, VEE = –12V

RL = 600Ω

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LME49870

THD+N vs Output Voltage

VCC = 22V, VEE = –22V

RL = 600Ω

THD+N vs Output Voltage

VCC = 2.5V, VEE = –2.5V

RL = 600Ω

THD+N vs Output Voltage

VCC = 15V, VEE = –15V

RL = 10kΩ

THD+N vs Output Voltage

VCC = 22V, VEE = –22V

RL = 10kΩ

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THD+N vs Output Voltage

VCC = 12V, VEE = –12V

RL = 10kΩ

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THD+N vs Output Voltage

VCC = 2.5V, VEE = –2.5V

RL = 10kΩ

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LME49870

THD+N vs Frequency

VCC = 15V, VEE = –15V, V

RL = 2kΩ

THD+N vs Frequency

VCC = 22V, VEE = –22V, V

RL = 2kΩ

OUT

OUT

= 3V

= 3V

RMS

RMS

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THD+N vs Frequency

VCC = 12V, VEE = –12V, V

RL = 2kΩ

THD+N vs Frequency

VCC = 15V, VEE = –15V, V

RL = 600Ω

OUT

OUT

= 3V

= 3V

RMS

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RMS

THD+N vs Frequency

VCC = 12V, VEE = –12V, V

RL = 600Ω

OUT

= 3V

RMS

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THD+N vs Frequency

VCC = 22V, VEE = –22V, V

OUT

= 3V

RMS

RL = 600Ω

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LME49870

THD+N vs Frequency

VCC = 15V, VEE = –15V, V

RL = 10kΩ

OUT

= 3V

RMS

THD+N vs Frequency

VCC = 12V, VEE = –12V, V

RL = 10kΩ

OUT

= 3V

RMS

THD+N vs Frequency

VCC = 22V, VEE = –22V, V

RL = 10kΩ

IMD vs Output Voltage

VCC = 12V, VEE = –12V

RL = 2kΩ

OUT

= 3V

RMS

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IMD vs Output Voltage

VCC = 15V, VEE = –15V

RL = 2kΩ

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IMD vs Output Voltage

VCC = 22V, VEE = –22V

RL = 2kΩ

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LME49870

IMD vs Output Voltage

VCC = 2.5V, VEE = –2.5V

RL = 2kΩ

IMD vs Output Voltage

VCC = 12V, VEE = –12V

RL = 600Ω

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IMD vs Output Voltage

VCC = 15V, VEE = –15V

RL = 600Ω

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IMD vs Output Voltage

VCC = 22V, VEE = –22V

RL = 600Ω

IMD vs Output Voltage

VCC = 2.5V, VEE = –2.5V

RL = 600Ω

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IMD vs Output Voltage

VCC = 15V, VEE = –15V

RL = 10kΩ

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LME49870

IMD vs Output Voltage

VCC = 12V, VEE = –12V

RL = 10kΩ

IMD vs Output Voltage

VCC = 22V, VEE = –22V

RL = 10kΩ

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IMD vs Output Voltage

VCC = 2.5V, VEE = –2.5V

RL = 10kΩ

Current Noise Density vs Frequency

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Voltage Noise Density vs Frequency

PSRR+ vs Frequency

VCC = 15V, VEE = –15V

RL = 2kΩ, V

RIPPLE

= 200mVpp

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LME49870

PSRR- vs Frequency

VCC = 15V, VEE = –15V

RL = 2kΩ, V

RIPPLE

PSRR- vs Frequency

VCC = 17V, VEE = –17V

RL = 2kΩ, V

RIPPLE

= 200mVpp

= 200mVpp

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PSRR+ vs Frequency

VCC = 17V, VEE = –17V

RL = 2kΩ, V

RIPPLE

PSRR+ vs Frequency

VCC = 12V, VEE = –12V

RL = 2kΩ, V

RIPPLE

= 200mVpp

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= 200mVpp

PSRR- vs Frequency

VCC = 12V, VEE = –12V

RL = 2kΩ, V

RIPPLE

= 200mVpp

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PSRR+ vs Frequency

VCC = 22V, VEE = –22V

RL = 2kΩ, V

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RIPPLE

= 200mVpp

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