Features Pin-selectable bandwidth and quiescent current Pure fidelity. Pure performance Short circuit protection Thermal shutdown TO–263 surface-mount package Description The LME49600 is a high performance, low distortion high fidelity 250mA audio buffer. The LME49600 is designed for a wide range of applications. It can be used inside the feedback loop of op amps. The LME49600 offers a pin-selectable bandwidth: a low current, 110MHz bandwidth mode that consumes 7.3mA and a wide 180MHz bandwidth mode that consumes 13.2mA. In both modes the LME49600 has a nominal 2000V/μs slew rate. Bandwidth is easily adjusted by either leaving the BW pin unconnected or connecting a resistor between the BW pin and the VEE pin. The LME49600 is fully protected through internal current limit and thermal shutdown. Key Specification ■  Low THD+N   (VOUT = 3VRMS, f = 1kHz, Figure 2) 0.00003% (typ) ■  Slew Rate 2000V/μs (typ) ■  High Output Current 250mA (typ) ■  Bandwidth     BW pin floating 110MHz (typ)   BW connected to VEE 180MHz (typ) ■  Supply Voltage Range ±2.25V ≤ VS ≤ ±18V Applications Headphone amplifier output drive stage Line drivers Low power audio amplifiers High-current operational amplifier output stage ATE Pin Driver Buffer Power supply regulator

High Performance, High Fidelity LME49600 Audio Buffer Application

Typical Application *click for larger image High Performance, High Fidelity LME49600 Audio Buffer Application	Block Diagram click for larger image
Typical Performance *click for larger image Gain vs Frequency vs Power Supply Voltage

Parameters Values THD 0.00003 % PSRR 75 dB Supply Min 4.5 Volt Single/Dual/Quad Single Special Features Adj BW THD Conditions Closed loop with LME49710 User Supply 15 Volt Supply Current per Amplifier 14.5 mA Supply Max 36 Volt Shut down No Voltage Noise 2.6 nV/root(Hz) Supply Range +/-2.25V to +/-18V Max Input Bias Current 5000 nA Output Current 250 mA Gain Bandwidth 180 MHz Slew Rate 2000 Volts/usec Mono/Stereo Mono Temperature Min -40 deg C Temperature Max 85 deg C Channels 1 Channels Input OutputType Not Rail to Rail Offset Voltage max, 25C 60 mV Automotive Yes

Datasheets

Title		Size	Date	Other Language
	LME49600 High Performance, High Fidelity, High Current Audio Buffer	433 Kbytes	31-Mar-08

Application Notes

Title		Size	Date	Other Language
	AN-1768: Application Note 1768 LME49600 Headphone Amplifier Evaluation Board User's Guide	533 Kbytes	29-Feb-08

Part Number(s) (NSID)	Top View	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
LME49600TS/NOPB RoHS Status	TO-263	Full production Lead Time: 6 weeks	Distributor Region Qty ARROW Worldwide 210 AVNET-EM Worldwide 10 DIGI-KEY Worldwide 375 FARNELL Europe and Asia 105 MOUSER Worldwide 119 NEWARK Americas 170 RS COMPONENTS Worldwide 38 TAYLOR Americas 210	$4.05 each at 1K+ pcs	rail of 45

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 LME49600.

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 LME49600 is located at RoHS Status.

Part Number(s) (NSID)	Description	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
LME49600TSBD	evaluation board	Full production	Distributor Region Qty DIGI-KEY Worldwide 2 MOUSER Worldwide 1	$250.00 each	1

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
LME49600TS/NOPB	1448.647	TO-263	5	3	245	Detail	Download	N/A	NSUZXYTTE# LME49600 TS

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 LME49600.

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 LME49600 is located at RoHS Status.

CAD Symbols and Models Download LME49600 CAD Symbols

Models N/A

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
LME49600TS	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 LME49600.

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 LME49600 is located at RoHS Status.