Precision Low Noise JFET Operational Amplifiers
ISL28110, ISL28210
The ISL28110, ISL28210, are single and dual JFET
amplifiers featuring low noise, high slew rate, low input
bias current and offset voltage, making them the ideal
choice for high impedance applications where precision
and low noise are important. The combination of
precision, low noise, and high speed combined with a
small footprint provides the user with outstanding value
and flexibility relative to similar competitive parts.
Applications for these amplifiers include precision medical
and analytical instrumentation, sensor conditioning,
precision power supply controls, industrial controls and
photodiode amplifiers.
The ISL28110 single amplifier is available in the 8 Ld
SOIC, TDFN, and MSOP packages. The ISL28210 dual
amplifier is available in the 8 Ld SOIC and TDFN
packages. All devices are offered in standard pin
configurations and operate over the extended
temperature range from -40°C to +125°C.
ISL28110, ISL28210
Features
• Wide Supply Range. . . . . . . . . . . . . . . . . 9V to 40V
• Low Voltage Noise . . . . . . . . . . . . . . . . . . 6nV/√Hz
• Input Bias Current . . . . . . . . . . . . . . . . . . . . . 2pA
• High Slew Rate. . . . . . . . . . . . . . . . . . . . . . 23V/µs
• High Bandwidth . . . . . . . . . . . . . . . . . . . .12.5MHz
• Low Input Offset . . . . . . . . . . . . . . . . .300µV,
Max
• Offset Drift . . . . . . . . . . . . . . . . Grade C 10µV/°C
• Low Current Consumption . . . . . . . . . . . . . 2.55mA
• Operating Temperature Range . . . -40°C to +125°C
• Small Package Offerings in Single, and Dual
• Pb-Free (RoHS compliant)
Applications*
(see page 22)
• Precision Instruments
• Photodiode Amplifiers
• High Impedance Buffers
• Medical Instrumentation
• Active Filter Blocks
• Industrial Controls
Typical Application
R
F
C
F
Input Bias Current vs Common
Mode Input Voltage
NORMALIZED INPUT BIAS CURRENT (pA)
10
8
6
4
2
0
-2
-4
-6
-8
-10
-15
-10
-5
0
V
CM
(V)
5
10
15
V
S
= ±15V
V
+
-
PHOTO
DIODE
R
SH
C
T
+
OUTPUT
V
-
BASIC APPLICATION CIRCUIT - PHOTODIODE AMPLIFIER
December 8, 2010
FN6639.1
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Copyright Intersil Americas Inc. 2010. All Rights Reserved
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.
ISL28110, ISL28210
Pin Configurations
ISL28110
(8 LD TDFN)
TOP VIEW
NC 1
-IN A 2
+IN A 3
V
-
4
PAD
- +
8 NC
7 V
+
6 V
OUT
A
5 NC
ISL28110
(8 LD, SOIC, MSOP)
TOP VIEW
NC
-IN A
+IN A
V
-
1
2
3
4
- +
8 NC
7 V
+
6 V
OUT
A
5 NC
ISL28210
(8 LD TDFN)
TOP VIEW
V
OUT
A
-IN A
+IN A
V
-
1
2
3
4
PAD
- +
+ -
8 V
+
7 V
OUT
B
6 -IN B
5 +IN B
V
OUT
A
-IN A
+IN A
V
-
1
2
3
4
ISL28210
(8 LD SOIC)
TOP VIEW
8 V
+
- +
+ -
7 V
OUT
B
6 -IN B
5 +IN B
Pin Descriptions
ISL28110
(8 Ld TDFN)
3
2
6
4
ISL28110
(8 Ld SOIC,
ISL28210
8 Ld MSOP) (8 Ld TDFN)
3
2
6
4
3
2
1
4
5
6
7
7
1, 5, 8
PAD
7
1, 5, 8
PAD
PAD
8
ISL28210
(8 Ld SOIC)
3
2
1
4
5
6
7
8
PIN
NAME
+IN A
-IN A
V
OUT
A
V
-
+IN B
-IN B
V
OUT
B
V
+
EQUIVALENT
CIRCUIT
Circuit 1
Circuit 1
Circuit 2
Circuit 3
Circuit 1
Circuit 1
Circuit 2
Circuit 3
DESCRIPTION
Amplifier A non-inverting input
Amplifier A inverting input
Amplifier A output
Negative power supply
Amplifier B non-inverting input
Amplifier B inverting input
Amplifier B output
Positive power supply
No connect
Thermal Pad is electrically
isolated from active circuitry. Pad
can float, connect to Ground or to
a potential source that is free
from signals or noise sources.
V
+
CAPACITIVELY
TRIGGERED
ESD CLAMP
V
-
CIRCUIT 3
V
+
IN-
IN+
V
+
OUT
V
-
CIRCUIT 2
V
-
CIRCUIT 1
2
FN6639.1
December 8, 2010
ISL28110, ISL28210
Ordering Information
PART NUMBER
(Notes 1, 2, 3)
ISL28110FBZ
ISL28210FBZ
Coming Soon
ISL28110FRTZ
Coming Soon
ISL28210FRTZ
Coming Soon
ISL28110FRTBZ
Coming Soon
ISL28210FRTBZ
Coming Soon
ISL28110FBBZ
Coming Soon
ISL28210FBBZ
Coming Soon
ISL28110FUBZ
Coming Soon
ISL28110FUZ
NOTES:
1. Add “-T*” suffix for tape and reel. Please refer to
TB347
for details on reel specifications..
2. These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach
materials, and 100% matte tin plate plus anneal (e3 termination finish, which is RoHS compliant and compatible with both
SnPb and Pb-free soldering operations). Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that
meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.
3. For Moisture Sensitivity Level (MSL), please see device information page for
ISL28110, ISL28210.
For more information on
MSL please see techbrief
TB363.
PART
MARKING
28110 FBZ -C
28210 FBZ -C
-C 8110
-C 8210
8110
8210
28110 FBZ -C
28210 FBZ
8110Z
8110Z
TCV
OS
(µV/°C)
10 (C Grade)
10 (C Grade)
10 (C Grade)
10 (C Grade)
4 (B Grade)
4 (B Grade)
4 (B Grade)
4 (B Grade)
4 (B Grade)
10 (C Grade)
PACKAGE
(Pb-free)
8 Ld SOIC
8 Ld SOIC
8 Ld TDFN
8 Ld TDFN
8 Ld TDFN
8 Ld TDFN
8 Ld SOIC
8 Ld SOIC
8 Ld MSOP
8 Ld MSOP
PKG.
DWG. #
M8.15E
M8.15E
L8.3x3A
L8.3x3A
L8.3x3A
L8.3x3A
M8.15E
M8.15E
M8.118
M8.118
3
FN6639.1
December 8, 2010
ISL28110, ISL28210
Absolute Voltage Ratings
Maximum Supply Voltage . . . . . . . . . . . . . . . . . . . . . . 42V
Maximum Supply Turn On Voltage Slew Rate . . . . . . . . 1V/µs
Maximum Differential Input Voltage . . . . . . . . . . . . . . . 33V
Min/Max Input Voltage . . . . . . . . . . . V
-
- 0.5V to V
+
+ 0.5V
Max/Min Input Current for Input Voltage >V+ or <V- . .±20mA
Output Short-Circuit Duration
(1 output at a time) . . . . . . . . . . . . . . . . . . . . Indefinite
ESD Ratings
Human Body Model . . . . . . . . . . . . . . . . . . . . . . . 4000V
Machine Model . . . . . . . . . . . . . . . . . . . . . . . . . . . 400V
Charged Device Model . . . . . . . . . . . . . . . . . . . . . 2000V
Thermal Information
Thermal Resistance (Typical)
θ
JA
(°C/W)
θ
JC
(°C/W)
8 Ld SOIC (Notes 5, 7)
ISL28110 . . . . . . . . . . . . . . . . .
125
70
ISL28210 . . . . . . . . . . . . . . . . .
120
50
8 Ld TDFN (Notes 4, 6)
ISL28110 . . . . . . . . . . . . . . . . .
48
7.8
ISL28210 . . . . . . . . . . . . . . . . .
46
4.5
8 Ld MSOP (Notes 5, 7)
ISL28110 . . . . . . . . . . . . . . . . .
158
60
Ambient Operating Temperature Range . . . -40°C to +125°C
Storage Temperature Range . . . . . . . . . . . -65°C to +150°C
Operating Junction Temperature . . . . . . . . . . . . . . +150°C
Pb-Free Reflow Profile . . . . . . . . . . . . . . . . . .see link below
http://www.intersil.com/pbfree/Pb-FreeReflow.asp
CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact
product reliability and result in failures not covered by warranty.
NOTES:
4.
θ
JA
is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach”
features. See Tech Brief TB379.
5.
θ
JA
is measured with the component mounted on a high effective thermal conductivity test board in free air. See Tech Brief
TB379 for details.
6. For
θ
JC
, the “case temp” location is the center of the exposed metal pad on the package underside.
7. For
θ
JC
, the “case temp” location is taken at the package top center.
Electrical Specifications
V
S
= ±5V, V
CM
= 0, V
OUT
= 0V, T
A
= +25°C, unless otherwise noted.
Boldface limits apply
over the operating temperature range, -40°C to +125°C.
CONDITIONS
MIN
(Note 8)
-300
-40°C < T
A
< +125°C
-1300
1
-2
-40°C < T
A
< +60°C
-40°C < T
A
< +85°C
-40°C < T
A
< +125°C
-5.3
-36
-235
-2
-40°C < T
A
< +60°C
-40°C < T
A
< +85°C
-40°C < T
A
< +125°C
-4.5
-50
-245
-1
-40°C < T
A
< +60°C
-40°C < T
A
< +85°C
-40°C < T
A
< +125°C
-2.25
-30
-105
-1
-40°C < T
A
< +60°C
-40°C < T
A
< +85°C
-40°C < T
A
< +125°C
-3.5
-32
-245
8.3
±0.15
±0.15
±0.3
±0.3
-40°C < T
A
< +125°C
TYP
MAX
(Note 8)
300
1300
10
2
5.3
36
235
2
4.5
50
245
1
2.25
30
105
1
3.5
32
245
UNITS
µV
µV
µV/C
pA
pA
pA
pA
pA
pA
pA
pA
pA
pA
pA
pA
pA
pA
pA
pA
pF
PARAMETER
V
OS
TCV
OS
I
B
DESCRIPTION
Input Offset Voltage
Input Offset Voltage
Temperature Coefficient
Input Bias Current
ISL28110
INPUT CHARACTERISTICS
Input Bias Current
ISL28210
I
OS
Input Offset Current
ISL28110
Input Offset Current
ISL28210
C
IN-DIFF
Differential Input Capacitance
4
FN6639.1
December 8, 2010
ISL28110, ISL28210
Electrical Specifications
V
S
= ±5V, V
CM
= 0, V
OUT
= 0V, T
A
= +25°C, unless otherwise noted.
Boldface limits apply
over the operating temperature range, -40°C to +125°C. (Continued)
CONDITIONS
MIN
(Note 8)
TYP
11.8
530
560
Guaranteed by CMRR test
V
CM
= -3.5V to +3.5V
V
CM
= -2.5V to +2.5V
A
VOL
Open-loop Gain
R
L
= 10kΩ to ground
V
O
= -3V to +3V
88
104
103
11
12.5
20
0.0002
0.0003
0.4
1
V
-
+ 1.5
V
-
+ 2.5
90
100
108
V
+
- 1.5
V
+
- 2.5
MAX
(Note 8)
UNITS
pF
GΩ
GΩ
V
V
dB
dB
dB
dB
MHz
V/µs
%
%
µs
µs
PARAMETER
C
IN-CM
R
IN-DIFF
R
IN-CM
V
CMIR
CMRR
DESCRIPTION
Common Mode Input
Capacitance
Differential Input Resistance
Common Mode Input Resistance
Common Mode Input Voltage
Range
Common Mode Rejection Ratio
DYNAMIC PERFORMANCE
GBWP
SR
THD+N
t
s
Gain-bandwidth Product
Slew Rate, V
OUT
20% to 80%
Total Harmonic Distortion +
Noise
Settling Time to 0.1%
4V Step; 10% to V
OUT
Settling Time to 0.01%
4V Step; 10% to V
OUT
NOISE PERFORMANCE
e
nP-P
e
n
Peak-to-Peak Input Voltage
Noise
Input Voltage Noise Spectral
Density
0.1Hz to 10Hz
f = 10Hz
f = 100Hz
f = 1kHz
f = 10kHz
i
n
Input Current Noise Spectral
Density
Output Voltage Low, V
OUT
to V
-
f = 1kHz
580
14
7
6
6
9
nV
P-P
nV/√Hz
nV/√Hz
nV/√Hz
nV/√Hz
fA/√Hz
G = 100, R
L
= 100kΩ, C
L
= 4pF
G = -1, R
L
= 2kΩ, 4V Step
G = 1, f = 1kHz, 4V
P-P
, R
L
= 2kΩ
G = 1, f = 1kHz, 4V
P-P
, R
L
= 600Ω
A
V
= 1, V
OUT
= 4V
P-P
, R
L
= 2kΩ to V
CM
A
V
= 1, V
OUT
= 4V
P-P
, R
L
= 2kΩ to V
CM
OUTPUT CHARACTERISTICS
V
OL
R
L
= 10kΩ
R
L
= 2kΩ
V
OH
Output Voltage High, V
+
to V
OUT
R
L
to GND = 10kΩ
R
L
to GND = 2kΩ
I
SC
V
SUPPLY
PSRR
I
S
Output Short Circuit Current
Supply Voltage Range
Power Supply Rejection Ratio
Supply Current/Amplifier
R
L
= 10Ω to V+. V-
Guaranteed by PSRR
V
S
= ± 4.5V to ±5V
±4.5
102
100
2.5
2.9
3.8
115
0.8
0.9
0.8
0.9
±50
±20V
1.0
1.1
1.1
1.2
1.0
1.1
1.1
1.2
POWER SUPPLY
V
dB
dB
mA
mA
V
V
V
V
V
V
V
V
mA
5
FN6639.1
December 8, 2010
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