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- *
- * Linear Technology LT1228 op amp model
- * Written: 11-05-1992. Type: Current Feedback Amplifier
- *
- * Connections: as per datasheet pinout
- *1=gm block output/current feedback amplifier non-inverting input
- *2=gm block inverting input
- *3=gm block non-inverting input
- *4=negative supply
- *5=set current
- *6=current feedback amplifier output
- *7=positive supply
- *8=current feedback amplifier inverting input
- *
- .SUBCKT LT1228 1 2 3 4 5 6 7 8
- *
- * THE OTA
- Q11 5 5 21 QN 10
- Q12 21 21 22 QN 10
- VC 22 4 DC 0
- F1 26 4 VC 0.375
- F2 27 4 VC 0.25
- F3 28 4 VC 0.375
- F4 7 23 VC 1.6
- F5 7 24 VC 1.6
- VB 7 25 DC 1.4
- CE1 23 7 11PF
- CE2 24 7 11PF
- RE13 23 32 120
- RE14 24 33 120
- Q13 29 25 32 QPI
- Q14 1 25 33 QPI
- Q15 23 3 28 QNI 9
- Q16 23 3 27 QNI
- Q17 23 3 26 QNI
- Q18 24 2 26 QNI 9
- Q19 24 2 27 QNI
- Q20 24 2 28 QNI
- VM 29 4 DC 1.4
- FM 1 4 VM 1
- DM 29 1 DC
- C1 1 7 5PF
- *
- * THE CFA
- Q2A 4 1 10 QP 0.5
- Q3A 11 10 200 QN
- Q4A 11 11 7 QP
- Q5A 9 11 7 QP
- Q6A 12 11 7 QP
- Q7A 4 9 12 QP
- Q8A 7 12 13 QN 10
- RSCA 13 6 10
- IBA 7 10 DC 300U
- *
- Q2B 7 1 110 QN 0.5
- Q3B 111 110 200 QP
- Q4B 111 111 4 QN
- *
- Q5B 9 111 4 QN
- Q6B 112 111 4 QN
- Q7B 7 9 112 QN
- Q8B 4 112 113 QP 10
- RSCB 6 113 10
- IBB 110 4 DC 300U
- *
- RC 8 200 20
- R9 9 0 201600
- D1 9 6 DC
- D2 6 9 DC
- *
- .MODEL DC D
- *
- .MODEL QNI NPN
- *
- .MODEL QN NPN (IS=168E-18 BF=150 ISC=40E-18 NC=1 RB=250 RE=8 RC=100
- +CJE=0.37P VJE=0.65 MJE=0.33 FC=0.7 CJC=0.8P VJC=0.62 MJC=0.44
- +TF=300P
- *
- .MODEL QPI PNP
- *
- .MODEL QP PNP (IS=230E-18 BF=150 ISC=113E-18 NC=1 RB=250 RE=8 RC=100
- +CJE=0.34P VJE=0.75 MJE=0.40 FC=0.7 CJC=0.8P VJC=0.5 MJC=0.36
- +TF=300P
- *
- .ENDS LT1228
- ***
- * (C) COPYRIGHT LINEAR TECHNOLOGY CORPORATION 1993
- * All rights reserved.
- *
- * Linear Technology Corporation hereby grants the users of this
- * macromodel a non-exclusive, nontransferrable license to use this
- * macromodel under the following conditions:
- *
- * The user agrees that this macromodel is licensed from Linear
- * Technology and agrees that the macromodel may be used, loaned,
- * given away or included in other model libraries as long as this
- * notice and the model in its entirety and unchanged is included.
- * No right to make derivative works or modifications to the
- * macromodel is granted hereby. All such rights are reserved.
- *
- * This model is provided as is. Linear Technology makes no
- * warranty, either expressed or implied about the suitability or
- * fitness of this model for any particular purpose. In no event
- * will Linear Technology be liable for special, collateral,
- * incidental or consequential damages in connection with or arising
- * out of the use of this macromodel. It should be remembered that
- * models are a simplification of the actual circuit.
- *
- * Linear Technology reserves the right to change these macromodels
- * without prior notice. Contact Linear Technology at 1630 McCarthy
- * Blvd., Milpitas, CA, 95035-7487 or telephone 408/432-1900 for
- * datasheets on the actual amplifiers or the latest macromodels.
- *
- * ----------------------------------------------------------------------- *