Features Easily drives 600Ω loads Optimized for superior audio signal fidelity Output short circuit protection PSRR and CMRR exceed 100dB (typ) SOIC package Description The LME49723 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 LME49723 audio operational amplifiers deliver superior audio signal amplification for outstanding audio performance. The LME49723 combines extremely low voltage noise density (3.6nV/ √ ^Hz) with vanishingly low THD+N (0.0002%) to easily satisfy the most demanding audio applications. To ensure that the most challenging loads are driven without compromise, the LME49723 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 LME49723's outstanding CMRR (100dB), PSRR (100dB), and VOS (0.3mV) give the amplifier excellent operational amplifier DC performance. The LME49723 has a wide supply range of ±2.5V to ±17V. Over this supply range the LME49723’s input circuitry maintains excellent common-mode and power supply rejection, as well as maintaining its low input bias current. The LME49723 is unity gain stable. The LME49723 is available in an 8–lead narrow body SOIC. Demonstration boards are available for each package. Key Specification ■  Power Supply Voltage Range ±2.5V to ±17V ■   THD+N (AV = 1, VOUT = 3VRMS, fIN = 1kHz)    RL = 2kΩ 0.0002% (typ)  RL = 600Ω 0.0002% (typ) ■  Input Noise Density 3.6nV/ √ ^Hz (typ) ■  Slew Rate ±8V/μs (typ) ■  Gain Bandwidth Product 17MHz (typ) ■  Open Loop Gain (RL = 600Ω) 105dB (typ) ■  Input Bias Current 200nA (typ) ■  Input Offset Voltage 0.3mV (typ) Applications High quality audio amplification High fidelity preamplifiers High fidelity multimedia 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

Typical Application click for larger image	Connection Diagram click for larger image
Typical Performance click for larger image

Parameters Values THD 0.0002 % PSRR 100 dB Supply Min 2.5 Volt Single/Dual/Quad Dual THD Conditions Av=1, Vout=3Vrms, Rl=600ohms PSRR Conditions delta(Vs)= 20V User Supply 17 Volt Supply Current per Amplifier 6.7 mA Supply Max 36 Volt Shut down No Voltage Noise 3.2 nV/root(Hz) Supply Range +/-2.5V to +/-18V Output Current 25 mA Offset Voltage, typ 0.3 mV Gain Bandwidth 17 MHz Slew Rate 8 Volts/usec CMRR 100 dB CMRR Conditions -10V Mono/Stereo Stereo Temperature Min -40 deg C Temperature Max 85 deg C Channels 2 Channels Input OutputType Not Rail to Rail Offset Voltage max, 25C 1 mV Automotive Yes

Datasheets

Title		Size	Date	Other Language
	LME49723 Dual High Fidelity Audio Operational Amplifier	641 Kbytes	11-Feb-08

Part Number(s) (NSID)	Top View	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
LME49723MA/NOPB RoHS Status	SOIC NARROW	Full production Lead Time: 6 weeks	Distributor Region Qty ARROW Worldwide 1455 AVNET-EM Worldwide 6270 DIGI-KEY Worldwide 0 TAYLOR Americas 1455	$0.70 each at 1K+ pcs	rail of 95
LME49723MAX/NOPB RoHS Status	SOIC NARROW	Full production Lead Time: 6 weeks	Distributor Region Qty ARROW Worldwide 7500 DIGI-KEY Worldwide 0 RSL MICRO Asia Pacific 5000 TAYLOR Americas 7500	$0.70 each at 1K+ pcs	reel of 2500

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

Moisture Sensitivity Level Data for LME49723.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

National's certificate of product compliance for LME49723 is located at RoHS Status.

Part Number(s) (NSID)	Description	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
LME49723MABD	36V High Performance, High Fidelity Dual Audio Operational Amplifier	Full production	Distributor Region Qty DIGI-KEY Worldwide 0	CALL	N/A
Description: The LME49723 is a Dual High Fidelity Audio Operational Amplifier. This Audio Amplifier offers low THD+N and sets a new standard for high end audio users. National's newest Amplifier uses state of the art circuitry and process to achieve a new class of audio performance and technology. The AC and DC parameters in this amplifier series offers users a solution well suited for the most demanding signal path applications. The LME49723 is designed for high slew rate, low noise and high output for systems needing +/-2.5 to +/-18V functionality. The pin out is the National standard to quickly upgrade existing boards. This series is for applications such as high quality audio amplification, multi-media, imaging, line drivers/receivers and active filters. The output current is for 600Ohm or 2000Ohm loads with low THD+N of 0.0002% over a wide voltage range. The LME49723MABD is the evaluation board designed to establish performance and evaluation to design the best end user system. The evaluation boards include all components for a ready-to-use, stand-alone bench work. Features: Dual Audio Operational Amplifier Low THD+N of 0.0002% 36V operation Low noise of 3.6nV/rtHz Gain Bandwidth Product >17MHz 8uV/S Slew rate PSRR >100dB CMRR >100dB Vos is 0.3mV Available in SOIC package Applications: High Fidelity Audio Equipment High Fidelity drivers/receivers Contents: Fully Assembled LME49723 Evaluation Board Instructions for where to locate and download the datasheet

National Semiconductor follows the provisions of the Product Stewardship Guide for Customers (CSP-9-111C1) and Banned Substances and Materials of Interest Specification (CSP-9-111S2) for regulatory environmental compliance. Details may be found at: www.national.com/en/packaging/greennopb.html. Lead free products are RoHS compliant.

Lead Free product status is available through the search tool located here

Part Number(s) (NSID)	Weight (milligrams)	Type	Pins	MSL Rating	Peak Reflow	RoHS Status	CAD Symbols	Models	Package Marking Format
LME49723MA/NOPB	69.761	SOIC NARROW	8	1	260	Detail	Download	N/A	NSZXTT L49723 MA
LME49723MAX/NOPB	69.761	SOIC NARROW	8	1	260	Detail	Download	N/A	NSZXTT L49723 MA

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

Moisture Sensitivity Level Data for LME49723.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

National's certificate of product compliance for LME49723 is located at RoHS Status.

CAD Symbols and Models Download LME49723 CAD Symbols

Models N/A

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
LME49723MA	SLM	0	44046	0	0	3532500	1	1002356520
LME49723MAX	SLM	0	44046	0	0	3532500	1	1002356520

Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.

For more information on Reliability Metrics, please click here.

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

Moisture Sensitivity Level Data for LME49723.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

National's certificate of product compliance for LME49723 is located at RoHS Status.