DATASHEET
ISL28134
5V Ultra Low Noise, Zero Drift Rail-to-Rail Precision Op Amp
The ISL28134 is a single, chopper-stabilized zero drift
operational amplifier optimized for single and dual supply
operation from 2.25V to 6.0V and ±1.125V and ±3.0V. The
ISL28134 uses auto-correction circuitry to provide very low
input offset voltage, drift and a reduction of the 1/f noise
corner below 0.1Hz. The ISL28134 achieves ultra low offset
voltage, offset temperature drift, wide gain bandwidth and rail-
to-rail input/output swing while minimizing power
consumption.
The ISL28134 is ideal for amplifying the sensor signals of
analog front-ends that include pressure, temperature, medical,
strain gauge and inertial sensors down to the µV levels.
The ISL28134 can be used over standard amplifiers with high
stability across the industrial temperature range of -40°C to
+85°C and the full industrial temperature range of -40°C to
+125°C. The ISL28134 is available in an industry standard
pinout SOIC and SOT-23 packages.
FN6957
Rev 6.00
October 14, 2014
Features
• Rail-to-rail inputs and outputs
- CMRR at V
CM
= 0.1V beyond V
S
. . . . . . . . . . . . . 135dB, typ
- V
OH
and V
OL
. . . . . . . . . . . . . . . . . . . . . . .10mV from V
S
, typ
• No 1/f noise corner down to 0.1Hz
- Input noise voltage . . . . . . . . . . . . . . . . . 10nV/Hz at 1kHz
- 0.1Hz to 10Hz noise voltage . . . . . . . . . . . . . . . . . 250nV
P-P
• Low offset voltage . . . . . . . . . . . . . . . . . . . . . . . . . . 2.5µV, Max
• Superb offset drift . . . . . . . . . . . . . . . . . . . . . . . 15nV/°C, Max
• Single supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.25V to 6.0V
• Dual supply . . . . . . . . . . . . . . . . . . . . . . . . . ±1.125V to ±3.0V
• Low I
CC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 675µA, typ
• Wide bandwidth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.5MHz
• Operating temperature range
- Industrial . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40°C to +85°C
- Full industrial . . . . . . . . . . . . . . . . . . . . . . .-40°C to +125°C
• Packaging
- Single: SOIC, SOT-23
Applications
• Medical instrumentation
• Sensor gain amps
• Precision low drift, low frequency ADC drivers
• Precision voltage reference buffers
• Thermopile, thermocouple, and other temperature sensors
front-end amplifiers
• Inertial sensors
• Process control systems
• Weight scales and strain gauge sensors
Related Literature
•
AN1641,
“ISL28134SOICEVAL1Z Evaluation Board User’s
Guide”
•
AN1560,
“Making Accurate Voltage Noise and Current Noise
Measurements on Operational Amplifiers Down to 0.1Hz”
1600
+5
ISL28134
0Ω
NUMBER OF AMPLIFIERS
1400
1200
1000
800
600
400
200
ISL26102
50Ω
24-BIT ADC
V
s
= ±2.5V
V
CM
= 0V
T = -40°C to +125°C
N = 2796
ISL22316
+
-
50kΩ
35
0Ω
ISL21010
DCP
-
+
ISL28134
50kΩ
50Ω
5V VREF
35
FN6957 Rev 6.00
October 14, 2014
0
35
Ω
0
-2.5 -2.0 -1.5 -1.0 -0.5
0
0.5
1.0
1.5
2.0
2.5
FIGURE 1. PRECISION WEIGH SCALE / STRAIN GAUGE
FIGURE 2. V
OS
HISTOGRAM V
S
= 5V
Page 1 of 25
ISL28134
Pin Configurations
ISL28134
(5 LD SOT-23)
TOP VIEW
OUT
V-
IN+
1
2
3
5
V+
NC
IN-
4
IN-
IN+
V-
1
2
3
4
- +
ISL28134
(8 LD SOIC)
TOP VIEW
8
7
6
5
NC
V+
OUT
NC
+ -
Pin Descriptions
ISL28134
(8 Ld SOIC)
2
3
ISL28134
(5 Ld SOT-23)
4
3
PIN
NAME
IN-
IN+
FUNCTION
Inverting input
Non-inverting input
(See Circuit 1)
V+
-
+
IN+
-
+
EQUIVALENT CIRCUIT
IN-
V-
CLOCK GEN + DRIVERS
Circuit 1
4
6
2
1
V-
OUT
Negative supply
Output
V+
OUT
V-
Circuit 2
7
1, 5, 8
5
-
V+
NC
Positive supply
No Connect
Pin is floating. No connection made to IC.
FN6957 Rev 6.00
October 14, 2014
Page 2 of 25
ISL28134
Ordering Information
PART NUMBER
(Note
4)
ISL28134IBZ (Notes
1, 3)
ISL28134FHZ-T7 (Notes
2, 3)
ISL28134FHZ-T7A (Notes
2, 3)
ISL28134ISENSEV1Z
ISL28134SOICEVAL1Z
NOTES:
1. Add “-T*” suffix for tape and reel. Please refer to
TB347
for details on reel specifications.
2. Please refer to
TB347
for details on reel specifications.
3. 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.
4. For Moisture Sensitivity Level (MSL), please see device information page for
ISL28134.
For more information on MSL please see techbrief
TB363.
5. The part marking is located on the bottom of the part.
PART
MARKING
28134 IBZ
BEEA (Note
5)
BEEA (Note
5)
Evaluation Board
Evaluation Board
TEMP RANGE
(°C)
-40°C to +85°C
-40°C to +125°C
-40°C to +125°C
PACKAGE
(Pb-Free)
8 Ld SOIC
5 Ld SOT-23
5 Ld SOT-23
PKG.
DWG. #
M8.15E
P5.064A
P5.064A
FN6957 Rev 6.00
October 14, 2014
Page 3 of 25
ISL28134
Absolute Maximum Ratings
Supply Voltage V+ to V- . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6.5V
Voltage VIN to GND. . . . . . . . . . . . . . . . . . . . . . . . (V- - 0.3V) to (V+ + 0.3V) V
Input Differential Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.5V
Input Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20mA
Voltage VOUT to GND (10s) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .(V+) or (V-)
dv/dt Supply Slew Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100V/µs
ESD Rating
Human Body Model (Tested per JED22-A114F) . . . . . . . . . . . . . . . . . 4kV
Machine Model (Tested per JED22-A115B). . . . . . . . . . . . . . . . . . . . 300V
Charged Device Model (Tested per JED22-C110D) . . . . . . . . . . . . . . 2kV
Latch-up (Passed Per JESD78B) . . . . . . . . . . . . . . . . . . . . . . . . . . . . +125°C
Thermal Information
Thermal Resistance (Typical)
JA
(°C/W)
JC
(°C/W)
5 Ld SOT-23 (Notes
6, 7)
. . . . . . . . . . . . . . .
225
116
8 Ld SOIC (Notes
6, 7)
. . . . . . . . . . . . . . . . .
125
77.2
Maximum Storage Temperature Range . . . . . . . . . . . . . .-65°C to +150°C
Pb-Free Reflow Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . see
TB493
Operating Conditions
Ambient Operating Temperature Range
Industrial Grade Package . . . . . . . . . . . . . . . . . . . . . . . . -40°C to +85°C
Full Industrial Grade Package. . . . . . . . . . . . . . . . . . . . .-40°C to +125°C
Operating Voltage Range. . . . . . . . . . . . . . . . . 2.25V (±1.125V) to 6V (±3V)
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:
6.
JA
is measured with the component mounted on a high effective thermal conductivity test board in free air. See Tech Brief
TB379
for details.
7. For
JC
, the “case temp” location is taken at the package top center.
Electrical Specifications
operating temperature range.
PARAMETER
DC SPECIFICATIONS
V
OS
V
S
= 5V, V
CM
= 2.5V, T
A
= +25°C, unless otherwise specified
.
Boldface limits apply across the specified
MIN
(Note
8)
MAX
(Note
8)
DESCRIPTION
TEST CONDITIONS
TYP
UNITS
Input Offset Voltage
T
A
= -40°C to +85°C
T
A
= -40°C to +125°C
-2.5
-3.4
-4
-15
-300
T
A
= -40°C to +85°C
T
A
= -40°C to +125°C
-300
-550
-
-
-600
T
A
= -40°C to +85°C
T
A
= -40°C to +125°C
-600
-750
-
-
-0.1
120
115
120
120
2.25
-0.2
-
-
-0.5
±120
-
-
±1.4
±2
±240
-
-
±2.8
±4
-
135
-
135
-
-
2.5
3.4
-4
15
300
300
550
-
-
600
600
750
-
-
5.1
-
-
-
-
6.0
µV
µV
µV
nV/°C
pA
pA
pA
pA/°C
pA/°C
pA
pA
pA
pA/°C
pA/°C
V
dB
dB
dB
dB
V
TCV
OS
I
B
Input Offset Voltage Temperature
Coefficient
Input Bias Current
T
A
= -40°C to +125°C
TCI
B
Input Bias Current Temperature
Coefficient
Input Offset Current
T
A
= -40°C to +85°C
T
A
= -40°C to +125°C
I
OS
TCI
OS
Input Offset Current Temperature Coefficient T
A
= -40°C to +85°C
T
A
= -40°C to +125°C
Common Mode Input
Voltage Range
CMRR
Common Mode Rejection Ratio
V+ = 5.0V, V- = 0V
Guaranteed by CMRR
V
CM
= -0.1V to 5.1V
V
CM
= -0.1V to 5.1V
PSRR
Power Supply Rejection Ratio
V
S
= 2.25V to 6.0V
V
S
= 2.25V to 6.0V
V
S
Supply Voltage (V+ to V-)
Guaranteed by PSRR
FN6957 Rev 6.00
October 14, 2014
Page 4 of 25
ISL28134
Electrical Specifications
operating temperature range. (Continued)
PARAMETER
I
S
V
S
= 5V, V
CM
= 2.5V, T
A
= +25°C, unless otherwise specified
.
Boldface limits apply across the specified
MIN
(Note
8)
-
-
-
-
-
15
15
-
-
-
MAX
(Note
8)
900
1075
1150
-
-
-
-
15
15
-
DESCRIPTION
Supply Current Per Amplifier
R
L
= OPEN
TEST CONDITIONS
TYP
675
-
-
65
-65
10
-
10
-
174
UNITS
µA
µA
µA
mA
mA
mV
mV
mV
mV
dB
R
L
= OPEN
T
A
= -40°C to +85°C
R
L
= OPEN
T
A
= -40°C to +125°C
I
SC
Short Circuit Output Source Current
Short Circuit Output Sink Current
V
OH
Output Voltage Swing, HIGH
From V
OUT
to V
+
Output Voltage Swing, LOW
From V
-
to V
OUT
Open Loop Gain
R
L
= Short to V-
R
L
= Short to V+
R
L
= 10kΩto V
CM
R
L
= 10kΩto V
CM
R
L
= 10kΩto V
CM
R
L
= 10kΩto V
CM
R
L
= 1MΩ
V
OL
A
OL
AC SPECIFICATIONS
C
IN
Input Capacitance
Differential
Common Mode
-
-
-
-
-
-
-
5.2
5.6
250
8
10
200
3.5
75
-
-
400
-
-
-
-
-
pF
pF
nV
P-P
nV/Hz
nV/Hz
fA/Hz
MHz
dB
e
N
Input Noise Voltage
f = 0.1Hz to 10Hz
f = 10Hz
f = 1kHz
I
N
GBWP
EMIRR
TRANSIENT RESPONSE
SR
Input Noise Current
Gain Bandwidth Product
EMI Rejection Ratio
f = 1kHz
A
V
= +1, V
IN
= 200mV
p-p
, V
CM
= 0V,
V+ = 2.5V, V- = -2.5V
-
Positive Slew Rate
Negative Slew Rate
V+ = 5V, V- = 0V, V
OUT
= 1V to 3V, R
L
= 100kΩ,
C
L
= 3.7pF
V+ = 5V, V- = 0V, V
OUT
= 0.1V
P-P
, R
F
= 0Ω,
R
L
= 100kΩ, C
L
= 3.7pF
V+ = 5V, V- = 0V, V
OUT
= 2V
P-P
, R
F
= 0Ω,
R
L
= 100kΩ, C
L
= 3.7pF
A
V
= -1, R
F
= 1kΩ, C
L
= 3.7pF
-
-
-
-
-
-
-
-
-2.5
1.5
1.0
0.07
0.17
1.3
2.0
100
3.1
-0.2
-
-
-0.5
-
-
-
-
-
-
-
-
2.5
3.4
-4
15
V/µs
V/µs
µs
µs
µs
µs
µs
µs
µV
µV
µV
nV/°C
t
r
, t
f
, Small Signal
Rise Time, t
r
10% to 90%
Fall Time, t
f
10% to 90%
t
r
, t
f
Large Signal
Rise Time, t
r
10% to 90%
Fall Time, t
f
10% to 90%
t
s
t
recover
V
OS
Settling Time to 0.1%, 2V
P-P
Step
Output Overload Recovery Time, Recovery A
V
= +2, R
F
= 10kΩ, R
L
= 100k, C
L
= 3.7pF
to 90% of Output Saturation
Input Offset Voltage
T
A
= -40°C to +85°C
T
A
= -40°C to +125°C
-3.4
-4
-15
TCV
OS
Input Offset Voltage Temperature
Coefficient
T
A
= -40°C to +125°C
FN6957 Rev 6.00
October 14, 2014
Page 5 of 25
