*////////////////////////////////////////////////////////////////////// * (C) National Semiconductor, Inc. * Models developed and under copyright by: * National Semiconductor, Inc. *///////////////////////////////////////////////////////////////////// * Legal Notice: This material is intended for free software support. * The file may be copied, and distributed; however, reselling the * material is illegal *//////////////////////////////////////////////////////////////////// * For ordering or technical information on these models, contact: * National Semiconductor's Customer Response Center * 7:00 A.M.--7:00 P.M. U.S. Central Time * (800) 272-9959 * For Applications support, contact the Internet address: * amps-apps@galaxy.nsc.com * \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ * LM13700 Dual Operational Transconductance Amplifier * \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ * * Amplifier Bias Input * | Diode Bias * | | Positive Input * | | | Negative Input * | | | | Output * | | | | | Negative power supply * | | | | | | Buffer Input * | | | | | | | Buffer Output * | | | | | | | | Positive power supply * | | | | | | | | | .SUBCKT LM13700/NS 1 2 3 4 5 6 7 8 11 * * Features: * gm adjustable over 6 decades. * Excellent gm linearity. * Linearizing diodes. * Wide supply range of +/-2V to +/-22V. * * Note: This model is single-pole in nature and over-estimates * AC bandwidth and phase margin (stability) by over 2X. * Although refinement may be possible in the future, please * use benchtesting to finalize AC circuit design. * * Note: Model is for single device only and simulated * supply current is 1/2 of total device current. * ****************************************************** * C1 6 4 4.8P C2 3 6 4.8P * Output capacitor C3 5 6 6.26P D1 2 4 DX D2 2 3 DX D3 11 21 DX D4 21 22 DX D5 1 26 DX D6 26 27 DX D7 5 29 DX D8 28 5 DX D10 31 25 DX * Clamp for -CMR D11 28 25 DX * Ios source F1 4 3 POLY(1) V6 1E-10 5.129E-2 -1.189E4 1.123E9 F2 11 5 V2 1.022 F3 25 6 V3 1.0 F4 5 6 V1 1.022 * Output impedance F5 5 0 POLY(2) V3 V7 0 0 0 0 1 G1 0 33 5 0 .55E-3 I1 11 6 300U Q1 24 32 31 QX1 Q2 23 3 31 QX2 Q3 11 7 30 QZ Q4 11 30 8 QY V1 22 24 0V V2 22 23 0V V3 27 6 0V V4 11 29 1.4 V5 28 6 1.2 V6 4 32 0V V7 33 0 0V .MODEL QX1 NPN (IS=5E-16 BF=200 NE=1.15 ISE=.63E-16 IKF=1E-2) .MODEL QX2 NPN (IS=5.125E-16 BF=200 NE=1.15 ISE=.63E-16 IKF=1E-2) .MODEL QY NPN (IS=6E-15 BF=50) .MODEL QZ NPN (IS=5E-16 BF=266) .MODEL DX D (IS=5E-16) .ENDS *$