Features • gm adjustable over 6 decades • Excellent gm linearity • Excellent matching between amplifiers • Linearizing diodes • High impedance buffers • High output signal-to-noise ratio Description The LM13700 series consists of two current controlled transconductance amplifiers, each with differential inputs and a push-pull output. The two amplifiers share common supplies but otherwise operate independently. Linearizing diodes are provided at the inputs to reduce distortion and allow higher input levels. The result is a 10 dB signal-to-noise improvement referenced to 0.5 percent THD. High impedance buffers are provided which are especially designed to complement the dynamic range of the amplifiers. The output buffers of the LM13700 differ from those of the LM13600 in that their input bias currents (and hence their output DC levels) are independent of IABC. This may result in performance superior to that of the LM13600 in audio applications. Applications • Current-controlled amplifiers • Current-controlled impedances • Current-controlled filters • Current-controlled oscillators • Multiplexers • Timers • Sample-and-hold circuits

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

Datasheets

Title		Size	Date	Other Language
	LM13700 Dual Operational Transconductance Amplifiers with Linearizing Diodes and Buffers	743 Kbytes	20-Sep-04

Part Number(s) (NSID)	Top View	Availability	Current Reported Stock	Budgetary Pricing	Standard Pack Size
LM13700M/NOPB LM13700M RoHS Status	SOIC NARROW	Full production Lead Time: 10 weeks	Distributor Region Qty ARROW Worldwide 708 DIGIKEY Worldwide 0 NEWARK Americas 780 RS COMPONENTS Worldwide 630	$0.44 each at 1K+ pcs	rail of 48
LM13700MX/NOPB LM13700MX RoHS Status	SOIC NARROW	Full production Lead Time: 8 weeks	Distributor Region Qty ARROW Worldwide 14022 DIGIKEY Worldwide 0 FUTURE Worldwide 1100	$0.44 each at 1K+ pcs	reel of 2500
LM13700N/NOPB LM13700N RoHS Status	MDIP	Full production Lead Time: 12 weeks	Distributor Region Qty AVNET-EM Worldwide 1000 DIGIKEY Worldwide 516 FUTURE Worldwide 1100 NEWARK Americas 433 RS COMPONENTS Worldwide 495 TAYLOR Americas 1700	$0.87 each at 1K+ pcs	rail of 25

Obsolete Versions

Obsolete Part	Alternate Part or Supplier	Source	Last Time Buy Date
LM13700AN	NONE	NONE	10 Mar 1998

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

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/quality/green.

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

Part Number(s) (NSID)	Top View	Type	Pins	MSL Rating	Peak Reflow	RoHS Status	CAD Symbols	Models	Package Marking Format
LM13700M/NOPB LM13700M		SOIC NARROW	16	1 1	260 235	Detail	Download	LM13700.MOD	NSUZXYTTE# LM13700M
LM13700MX/NOPB LM13700MX		SOIC NARROW	16	1 1	260 235	Detail	Download	LM13700.MOD	NSUZXYTTE# LM13700M
LM13700N/NOPB LM13700N		MDIP	16	1 1	NA NA	Detail	Download	LM13700.MOD	NSUZXYYTTE# LM13700N

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

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/quality/green.

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

Design Tools

Title	Size	Date
Amplifiers Selection Guide software for Windows

CAD Symbols and Models Download LM13700 CAD Symbols

Models LM13700.MOD

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
LM13700M	SLM	0	44046	0	0	3532500	1	1002356520
LM13700MX	SLM	0	44046	0	0	3532500	1	1002356520
LM13700N	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/packaging/leadfree.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/quality/green.

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

Obsolete Versions

Obsolete Part	Alternate Part or Supplier	Source	Last Time Buy Date
LM13700AN	NONE	NONE	10 Mar 1998