ISL28110_1012 Datasheet, PDF (18/25 Pages) Intersil Corporation – Precision Low Noise JFET Operational Amplifiers

ISL28110, ISL28210
* source ISL28110_210_presubckt_0
* Revision A, LaFontaine Nov 4th 2010
* Model for Noise 200nV/rtHz@0.1Hx
*11nV/rtHz base band, supply current 2.5mA,
*CMRR 120dB fcm=281kHz ,AVOL 125dB
*fd=7Hz
* SR = 20V/us, GBWP 12.6MHz, Output
*voltage clamp
*Copyright 2010 by Intersil Corporation
*Refer to data sheet “LICENSE STATEMENT”
*Use of this model indicates your acceptance
*with the terms and provisions in the License
*Statement.
* Connections:
*
+input
*
| -input
*
| | +Vsupply
*
| | | -Vsupply
*
| | | | output
*
| ||||
.subckt ISL28110subckt Vin+ Vin- V+ V- VOUT
* source ISL28110_210_PRESUBCKT_0
*
*Voltage Noise
*
E_En VIN+ 4 2 0 1
V_V1 1 0 0.4
D_D1 1 2 DN
R_R1 2 0 110
*
*Input Stage
*
R_R2 VIN- 3 5e11
R_R3 3 4 5e11
C_CinDif 4 VIN- 5.87E-40
C_Cin1 V-- VIN- 7.27e-40
C_Cin2 V-- 4 7.27e-40
I_IOS 4 VIN- DC 0.3E-12
R_R4 5 VIN- 250
J_J1 7 5 6 pj110_input
J_J2 15 16 14 pj110_input
J_J3 V-- 14 15 PJ110_CASCODE
J_J4 V-- 6 7 PJ110_CASCODE
Q_Q1 19 13 14 NPN_CASCODE
Q_Q2 12 13 6 NPN_CASCODE
Q_Q4 8 13 6 NPN_CASCODE
Q_Q5 12 13 14 NPN_CASCODE
Q_Q6 19 11 20 PNP_MIRROR
Q_Q7 8 11 9 PNP_MIRROR
V_V2 V++ 10 0.7Vdc
V_V3 V++ 21 0.7Vdc
R_R5 9 10 5.5k
R_R6 20 21 5.5k
E_buffer1 11 V++ 8 V++ 1
E_buffer2 13 V-- 12 V-- 1
D_D2 8 19 DBREAK
D_D3 19 8 DBREAK
I_I1 V++ 12 DC 240E-6
C_C1 19 V++ 4e-12
C_C2 V-- 19 4e-12
R_R7 16 17 250
E_EOS 17 4 VC VMID 1
*
*1st Gain Stage
*
R_R8 18 V++ 100
D_D4 V-- 18 DBREAK
D_D5 22 V++ DX
D_D6 V-- 24 DX
V_V4 22 23 1.18
V_V5 23 24 1.18
G_G1 V++ 23 19 8 33
G_G2 V-- 23 19 8 33
R_R9 23 V++ 1
R_R10 V-- 23 1
R_R11 25 23 1k
D_D7 25 VMID DX
D_D8 VMID 25 DX
R_R12 25 VMID 1e10
G_G3 V++ VG 25 VMID 181.819E-6
G_G4 V-- VG 25 VMID 181.819E-6
D_D9 26 V++ DX
D_D10 V-- 27 DX
V_V6 26 VG 1.18
V_V7 VG 27 1.18
R_R13 VG V++ 200k
R_R14 V-- VG 200k
C_C3 8 VG 6e-12
C_C4 VG V++ 2.5e-12
C_C5 V-- VG 2.5e-12
*
* Mid Supply Reference
*
E_E2 VMID V-- V++ V-- 0.5
E_E3 V++ 0 V+ 0 1
E_E4 V-- 0 V- 0 1
I_ISY V+ V- DC 2.5E-3
*
*Common Mode Gain Stage 40dB/dec
*
G_G5 V++ 29 3 VMID 1
G_G6 V-- 29 3 VMID 1
G_G7 V++ VC 29 VMID 1
G_G8 V-- VC 29 VMID 1
L_L1 28 V++ 5.30532e-11
L_L2 30 V-- 5.30532e-11
L_L3 31 V++ 5.30532e-11
L_L4 32 V-- 5.30532e-11
R_R15 29 28 0.001
R_R16 30 29 0.001
R_R17 VC 31 0.001
R_R18 32 VC 0.001
*
*Second Pole Stage 40dB/dec
*
G_G9 V++ 33 VG VMID 0.0031415
G_G10 V-- 33 VG VMID 0.0031415
G_G11 V++ 34 33 VMID 0.0031415
G_G12 V-- 34 33 VMID 0.0031415
R_R19 33 V++ 318.319274232055
R_R20 V-- 33 318.319274232055
R_R21 34 V++ 318.319274232055
R_R22 V-- 34 318.319274232055
C_C6 33 V++ 10e-12
C_C7 V-- 33 10e-12
C_C8 34 V++ 10e-12
C_C9 V-- 34 10e-12
*
* Output Stage
*
D_D11 34 35 DX
D_D12 36 34 DX
D_D13 V-- 37 DY
D_D14 V++ 37 DX
D_D15 V++ 38 DX
D_D16 V-- 38 DY
G_G13 37 V-- VOUT 34 1.11e-2
G_G14 38 V-- 34 VOUT 1.11e-2
G_G15 VOUT V++ V++ 34 20e-3
G_G16 V-- VOUT 34 V-- 20e-3
V_V8 35 VOUT -.384
FIGURE 45. SPICE NET LIST
V_V9 VOUT 36 -.384
R_R23 VOUT V++ 50
R_R24 V-- VOUT 50
*
*
.model pj110_input pjf
+ vto=-1.4
+ beta=0.0025
+ lambda=0.03
+ is=2.68e-015
+ pb=0.73
+ cgd=8.6e-012
+ cgs=9.05e-012
+ fc=0.5 kf=0
+ af=1
+ tnom=35
*
.model NPN_CASCODE npn
+ is=5.02e-016
+ bf=150
+ va=300
+ ik=0.017
+ rb=0.01
+ re=0.011
+ rc=900
+ cje=2e-013
+ cjc=1.6e-028
+ kf=0
+ af=1
*
.model PJ110_CASCODE pjf
+ vto=-1.4
+ beta=0.000617
+ lambda=0.03
+ is=3.96e-016
+ pb=0.73
+ cgd=2.2e-012
+ cgs=3e-012
+ fc=0.5
+ kf=0
+ af=1
+ tnom=35
*
.model DBREAK d
+ bv=43
+ rs=1
*
.model PNP_MIRROR pnp
+ is=4e-015
+ bf=150
+ va=50
+ ik=0.138
+ rb=0.01
+ re=0.101
+ rc=180
+ cje=1.34e-012
+ cjc=4.4e-013
+ kf=0
+ af=1
*
.model DN D(KF=6.69e-12 AF=1)
.MODEL DX D(IS=1E-12 Rs=0.1)
.MODEL DY D(IS=1E-15 BV=50 Rs=1)
.ends ISL28110subckt
18
FN6639.1
December 8, 2010