* OPA234E operational amplifier enhanced "macromodel" subcircuit * created using Parts release 6.1 on 06/04/96 at 17:04 * Parts is a MicroSim product. * REV A. BB 7/20/96 * connections: non-inverting input * | inverting input * | | positive power supply * | | | negative power supply * | | | | output * | | | | | .SUBCKT OPA234E 1 2 3 4 5 * C1 11 12 6.995E-12 C2 6 7 30E-12 DC 5 53 DX DE 54 5 DX DLP 90 91 DX DLN 92 90 DX DP 4 3 DX EGND 99 0 POLY(2) (3,0) (4,0) 0 .5 .5 FB 7 99 POLY(5) VB VC VE VLP VLN 0 479.3E6 -480E6 480E6 480E6 -480E6 GA 6 0 11 12 65.97E-6 GCM 0 6 10 99 1.046E-9 IEE 3 10 DC 6.100E-6 HLIM 90 0 VLIM 1E3 Q1 11 2 13 QX Q2 12 64 14 QX R2 6 9 100.0E3 RC1 4 11 15.16E3 RC2 4 12 15.16E3 RE1 13 10 6.429E3 RE2 14 10 6.429E3 REE 10 99 50.00E6 RO1 8 5 10 RO2 7 99 10 VB 9 0 DC 0 VC 3 53 DC 1.3 VE 54 4 DC 0.65 VLIM 7 8 DC 0 VLP 91 0 DC 10 VLN 0 92 DC 10 ********************************** * OPA234 "E" - Enhancements ********************************** * Output Supply Mirror DQ1 20 21 DX DQ2 22 20 DX VQ1 21 0 0 VQ2 22 0 0 *adds quiescent plus positive output current FQ1 3 0 POLY(1) VQ1 235E-6 1 *adds quiescent plus negative output current FQ2 0 4 POLY(1) VQ2 235E-6 -1 *mirrors output current-used by FQ1 and FQ2 FQ3 0 20 POLY(1) VLIM 0 1 * delta Quiescent Current / delta Supplies *determines change in IQ with change in power supply voltages RQ 3 4 1E6 * Diff Input Capacitance CDIF 1 2 5E-12 * Common Mode Input Capacitance C1CM 1 99 6E-12 C2CM 2 99 6E-12 * Input Voltage Noise VN1 61 0 0.6 VN2 0 62 0.6 DN1 61 63 DY DN2 63 62 DY *adds 1/f noise to model. Adjusted to agree w/actual en EN 64 1 63 0 0.8 RN1 0 65 60.3865 RN2 65 66 60.3865 RN3 66 0 120.773 RN4 0 67 60.3865 RN5 67 68 60.3865 RN6 68 0 120.773 ************************** .MODEL DX D(IS=800.0E-18) *adds voltage noise .MODEL DY D(IS=1.9E-16 RS=2000 AF=1 KF=2.258E-17) .MODEL QX PNP(IS=800.0E-18 BF=60) .ENDS