* MAX4124 FAMILY MACROMODELS * ------------------------- * FEATURES: * 25MHz Gain Bandwidth Product * 650uA Typical Supply Current * Drive 250 Ohm Loads * Stable at Gains >=10V/V * Rail-to-Rail I/O * Available in 5-Pin SOT23-5 (MAX4124) * 8-Pin SO/uMAX (MAX4128) * * PART NUMBER DESCRIPTION * ___________ ______________________________ * MAX4124 Single 25MHz, Stable Av=10V/V * MAX4128 Dual 25MHz, Stable Av=10V/V * * * ////////////// MAX4124 MACROMODEL ////////////////// * * ====> REFER TO MAX4124 DATA SHEET <==== * * connections: non-inverting input * | inverting input * | | positive power-supply * | | | negative power-supply * | | | | output * | | | | | * OUTPUT CONNECTS: 1 2 99 50 97 * * .SUBCKT MAX4124 1 2 99 50 97 ****************INPUT STAGE********************** I1 99 4 .5e-3 IBIASE 1 2 50NA M1 5 2 4 99 MOSFET R3 5 50 2828 M2 6 7 4 99 MOSFET R4 6 50 2828 CI1 1 0 2P CI2 2 0 2P DP1 1 99 DA DP2 50 1 DA DP3 2 99 DB DP4 50 2 DB ************************ ************ GAIN, 1ST POLE, SLEW STAGE************ EH 99 98 99 50 0.5 G0 98 9 5 6 7.87e-3 VB 9 10 0V R0 98 9 127E3 C3 10 98 1.3e-10E5 *C3 10 98 1.3E-10 *** *********** D107 10 99 Dp D103 10 100 Dp D104 100 99 Dp F100 100 99 POLY(1) VB -1.2MA 1 *** D108 50 10 Dp D105 101 10 Dp D106 50 101 Dp F2 50 101 POLY(1) VB -1.2MA -1 *** *********** D1 9 111 DP D2 112 9 DP V11 99 111 50MV V12 112 50 50MV ************ I2 99 50 300U VOS 7 1 0v *CHANGE OFFSET VOLTAGE TO 0V FOR OPEN-LOOP, OTHERWISE VOS *********COMMON-MODE ZERO STAGE******** ******* POLE STAGE ********** G3 98 15 10 98 1E-3 R12 98 15 1E3 *************************** *********** change for second pole C5 98 15 8P * was 2.4pf * *************OUTPUT STAGE**************** F5 99 38 VA8 1 D9 40 38 DX D10 38 99 DX VA7 99 40 0 G12 98 32 15 98 1E-6 * ^ INSERT NODE FROM LAST STAGE HERE R15 98 32 1E6 *D3 32 36 Dx *D4 37 32 Dx *V5 34 37 .3V *V4 36 34 -.3V *** V5,V4 SET ISC R16 34 97 10 E1 99 33 99 32 1 VA8 33 34 0V *RCON 35 97 15k ****************************************** .MODEL DA D(IS=100E-14 RS=.5K) .MODEL DB D(IS=100E-14 RS=.5K) .MODEL DX D(IS=100E-14) .MODEL Dp D(N=0.05) .MODEL MOSFET PMOS(VTO=0 KP=1.8E-3) *VTO ESTABLISHES INPUT VOLT. RANGE , was -1.7 * .ENDS * * ////////////// MAX4128 MACROMODEL ////////////////// * * ====> REFER TO MAX4128 DATA SHEET <==== * * connections: non-inverting input * | inverting input * | | positive power-supply * | | | negative power-supply * | | | | output * | | | | | * OUTPUT CONNECTS: 1 2 99 50 97 * * .SUBCKT MAX4128 1 2 99 50 97 ****************INPUT STAGE********************** I1 99 4 .5e-3 IBIASE 1 2 50NA M1 5 2 4 99 MOSFET R3 5 50 2828 M2 6 7 4 99 MOSFET R4 6 50 2828 CI1 1 0 2P CI2 2 0 2P DP1 1 99 DA DP2 50 1 DA DP3 2 99 DB DP4 50 2 DB ************************ ************ GAIN, 1ST POLE, SLEW STAGE************ EH 99 98 99 50 0.5 G0 98 9 5 6 7.87e-3 VB 9 10 0V R0 98 9 127E3 C3 10 98 1.3e-10E5 *C3 10 98 1.3E-10 *** *********** D107 10 99 Dp D103 10 100 Dp D104 100 99 Dp F100 100 99 POLY(1) VB -1.2MA 1 *** D108 50 10 Dp D105 101 10 Dp D106 50 101 Dp F2 50 101 POLY(1) VB -1.2MA -1 *** *********** D1 9 111 DP D2 112 9 DP V11 99 111 50MV V12 112 50 50MV ************ I2 99 50 300U VOS 7 1 0v *CHANGE OFFSET VOLTAGE TO 0V FOR OPEN-LOOP, OTHERWISE VOS *********COMMON-MODE ZERO STAGE******** ******* POLE STAGE ********** G3 98 15 10 98 1E-3 R12 98 15 1E3 *************************** *********** change for second pole C5 98 15 8P * was 2.4pf * *************OUTPUT STAGE**************** F5 99 38 VA8 1 D9 40 38 DX D10 38 99 DX VA7 99 40 0 G12 98 32 15 98 1E-6 * ^ INSERT NODE FROM LAST STAGE HERE R15 98 32 1E6 *D3 32 36 Dx *D4 37 32 Dx *V5 34 37 .3V *V4 36 34 -.3V *** V5,V4 SET ISC R16 34 97 10 E1 99 33 99 32 1 VA8 33 34 0V *RCON 35 97 15k ****************************************** .MODEL DA D(IS=100E-14 RS=.5K) .MODEL DB D(IS=100E-14 RS=.5K) .MODEL DX D(IS=100E-14) .MODEL Dp D(N=0.05) .MODEL MOSFET PMOS(VTO=0 KP=1.8E-3) *VTO ESTABLISHES INPUT VOLT. RANGE , was -1.7 * .ENDS