OP285 Analog Devices, OP285 Datasheet - Page 12

• Manufacturer Part Number: OP285
• Description: Dual, 9 MHz Precision Operational Amplifier
• Manufacturer: Analog Devices

Specifications of OP285

• -3db Bandwidth: 9MHz
• Slew Rate: 22V/µs
• Vos: 35µV
• Ib: 100nA
• # Opamps Per Pkg: 2
• Input Noise (nv/rthz): 6nV/rtHz
• Vcc-vee: 9V to 44V
• Isy Per Amplifier: 2.5mA
• Packages: SOIC

OP285
OP285 SPICE Model
.SUBCKT OP285
R3
R4
CIN 1 2
C2
I1
IOS 1 2
EOS 9 3
Q1
Q2
R5
R6
D1
D2
EN
GN1 0 2
GN20 1
EREF 98 0
EP
EM
DN1 35 10
DN2 10 11
VN1 35 0
VN2 0 11
DN3 12 13
DN4 13 14
VN3 12 0
VN4 0 14
CN1 13 0
DN5 15 16
DN6 16 17
VN5 15 0
VN6 0 17
CN2 16 0
R7 18 98
C3 18 98
G1 98 18
V2 97 19
V3 20 51
D3 18 19
D4 20 18
Node assignments
INPUT STAGE & POLE AT 100 MHZ
VOLTAGE NOISE SOURCE
CURRENT NOISE SOURCE
CURRENT NOISE SOURCE
GAIN STAGE & DOMINANT POLE AT 32 HZ
5 51
6 51
1.5E-12
5 6
97 4
1E-9
POLY(1) 26 28 35E-6 1
5 2 7 QX
6 9 8 QX
7 4
8 4
2 36
1 36
3 1
13 0 1
16 0 1
28 0 1
97 0
510
DEN
DEN
DC 2
DC 2
DIN
DIN
DC 2
DC 2
7.53E-3
DIN
DIN
DC 2
DC2
7.53E-3
1.09E6
4.55E-9
5 6 4.57E-1
1.4
1.4
DX
DX
noninverting input
1 2
inverting input
positive supply
99 50
2.188
2.188
364E-12
100E-3
1.672
1.672
DZ
DZ
100 1
99 0 l
50 0 1
negative supply
output
34
R8 21 98
R9 21 22
C4 22 98
G2 98 21
R10 23 98
C5 23 98
G3 98 23
R11 24 98
C6 24 98
G4 98 24
R12 25 26
C7 25 26
R13 26 98
E2 25 98
R14 27 98
C8 27 98
G5 98 27
Rl5 28 99
R16 28 50
C9 28 50
ISY 99 50
R17 29 99
R18 29 50
L2 29 34
G6 32 50
G7 33 50
G8 29 99
G9 50 29
V4 30 29
V5 29 31
F1 29 0
F2 0 29
D5 27 30
D6 31 27
D7 99 32
D8 99 33
D9 50 32
D10 50 33
.MODEL QX PNP(BF = 5E5)
.MODEL DX
.MODEL DY
.MODEL DZ
.MODEL DEN D(IS = lE-12 RS = 4.35K KF = 1.95E-15
AF = l) .MODEL DIN D(IS = lE-12 RS = 77.3E-6
KF = 3.38E-15 AF = 1) .ENDS OP-285
POLE AT 100 MHZ
POLE AT 100 MHZ
COMMON-MODE GAIN NETWORK WITH ZERO AT
POLE AT 100 MHZ
OUTPUT STAGE
MODELS USED
POLE/ZERO PAIR AT 1.5MHz/2.7MHz
1 kHZ
1E3
1.25E3
47.2E-12
18 28 1E-3
1
1.59E-9
21 28 1
l
1.59E-9
23 28 1
1E6
1.59E-12
1
POLY(2) 1 98 2 98 0 2.506 2.506
1
1.59E-9
24 28 1
100E3
100E3
1 E-6
1.85E-3
100
100
1E-9
27 29 10E-3
29 27 10E-3
99 27 10E-3
27 50 10E-3
1.3
3.8
V4 1
V5 1
DX
DX
DX
DX
DY
DY
D(IS = lE-12)
D(IS = lE-15 BV = 50)
D(IS = lE-15 BV = 7.0)