Features Optimized for superior audio signal fidelity Output short circuit protection PSRR and CMRR exceed 120dB (typ) Description The LME49725 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 LME49725 audio operational amplifiers deliver superior audio signal amplification for outstanding audio performance. The LME49725 combines extremely low voltage noise density (3.3nV/ √ ^Hz) with vanishingly low THD+N (0.00004%) to easily satisfy the most demanding audio applications. To ensure that the most challenging loads are driven without compromise, the LME49725 has a high slew rate of ±15V/μs and an output current capability of ±22mA. 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. Part of the PowerWise® family of energy efficient solutions, the LME49725 consumes only 3.0mA of supply current per amplifier while providing superior performance to high performance, high fidelity applications. The LME49725's outstanding CMRR (120dB), PSRR (120dB), and VOS (0.5mV) give the amplifier excellent operational amplifier DC performance. The LME49725 has a wide supply range of ±4.5V to ±18V. Over this supply range the LME49725’s input circuitry maintains excellent common-mode and power supply rejection, as well as maintaining its low input bias current. The LME49725 is unity gain stable. This audio operational amplifier achieves outstanding AC performance while driving complex loads with values as high as 100pF. The LME49725 is available in 8–lead narrow body SOIC. Key Specification ■  Power Supply Voltage Range ±4.5V to ±18V ■  THD+N   (AV = 1, VOUT = 3VRMS, fIN = 1kHz)    RL = 2kΩ 0.00004% (typ)  RL = 600Ω 0.00004% (typ) ■  Quiescent current per Amplifier 3.0mA (typ) ■  Input Noise Density 3.3nV/ √ ^Hz (typ) ■  Slew Rate ±15V/μs (typ) ■  Gain Bandwidth Product 40MHz (typ) ■  Open Loop Gain (RL = 600Ω) 135dB (typ) ■  Input Bias Current 15nA (typ) ■  Input Offset Voltage 0.5mV (typ) ■  DC Gain Linearity Error 0.000009% (typ) Applications Audio amplification Preamplifiers Multimedia Phono preamplifiers Professional audio Equalization and crossover networks Line drivers Line receivers Active filters

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

Datasheets

Title		Size	Date	Other Language
	LME49725 PowerWise(R) Dual High Performance, High Fidelity Audio Operational Amplifier	1268 Kbytes	3-Apr-08

Part Number(s) (NSID)	Top View	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
LME49725MA/NOPB RoHS Status	SOIC NARROW	Full production Lead Time: 6 weeks	Distributor Region Qty ARROW Worldwide 140 AVNET-EM Worldwide 2829 DIGI-KEY Worldwide 530 FARNELL Europe and Asia 279 MOUSER Worldwide 65 NEWARK Americas 279 RS COMPONENTS Worldwide 65 TAYLOR Americas 140	$1.10 each at 1K+ pcs	rail of 95
LME49725MAX/NOPB RoHS Status	SOIC NARROW	Full production Lead Time: 6 weeks	Distributor Region Qty DIGI-KEY Worldwide 0	$1.10 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 LME49725.

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 LME49725 is located at RoHS Status.

Part Number(s) (NSID)	Weight (milligrams)	Type	Pins	MSL Rating	Peak Reflow	RoHS Status	CAD Symbols	Models	Package Marking Format
LME49725MA/NOPB	69.761	SOIC NARROW	8	1	260	Detail	Download	N/A	NSZXTT L49725 MA
LME49725MAX/NOPB	69.761	SOIC NARROW	8	1	260	Detail	Download	N/A	NSZXTT L49725 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 LME49725.

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 LME49725 is located at RoHS Status.

CAD Symbols and Models Download LME49725 CAD Symbols

Models N/A

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
LME49725MA	VIP III	0	16160	0	0	1302500	3	369587931
LME49725MAX	VIP III	0	16160	0	0	1302500	3	369587931

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 LME49725.

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 LME49725 is located at RoHS Status.