Transcript INA188 - Avnet

INA188 – Industry’s first zero-drift 36V INA
36V | 25µV VOS; 80nV/˚C Drift | RRO Instrumentation Amplifier
Benefits
Features
• High DC Precision
− Offset Voltage: 65µV(max) | 25µV (typ)
− Offset Voltage Drift: 0.08µV/°C (typ)
− Low noise: 0.25µV (0.1-10Hz)
− Gain error: 0.02%
• Output / Supply
− 4V-36V Supply
− Output swing: 250mV from the rail
− Capacitive load drive: 1nF
• Fast Response
− Bandwidth: 600kHz (G=1)
− Settling to 0.01% at 4V Step: 60µs
− Low Quiescent Current: 1.2mA (max)
• Superior Precision: Industry-leading offset drift
provides pinpoint precision, improving accuracy for
applications such as Test & Measurement, medical
and industrial process control.
• Best noise suppression: No 1/f corner with low DCnoise enables precise measurements at low
frequencies
• High voltage ensures signal integrity: Up to 36-V
power supply helps maintain signal integrity over the
full extended temperature range by allowing larger
gains than lower-voltage instrumentation amplifiers
Applications
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Industrial Automation
Test and Measurement
Medical Instrumentation
Data acquisition systems
Precision Weigh Scales
(Released / Sampling / Preview)
INA188 (SO-8, DFN-8)
TIPD195
Instrumentation Amps
Supply Voltage ≥ 5.5 V
INA116
1
1,000
1
500
INA111
1
Input Offset (μV)
INA121
250
INA110
INA125
1
1 2
1 2
INA128
INA126
50
INA826
INA114
1
INA118
INA827
1
1
INA131
INA166
1
INA103
1
INA163
1
1
1
INA217
1
1 2
1
INA129
1
INA141
25
INA101
INA188
10
1
1
50
100
200
500
750
1,000
Bandwidth (kHz | G = 100)
1
Existing
2
Channel Options
Preview
New
INA188 Competitive Analysis
INA188
AD8221A
AD620B
AD8421
AD622
LT1167*
4.0 to 36
4.6 to 36
4.6 to 36
5 to 36V
5.2 to 36V
4.6 to 30
Quiescent Current
1.3mA
1mA
1.3mA
2.3mA
1.3mA
1.3mA
Input Offset Voltage
25µV
60µV
50µV
60µV
125µV
40µV
0.15µV/C
0.9µV/C
0.6µV/C
0.4µV/C
1µV/C
0.3µV/C
Input Bias Current
1.4nA
1.5nA
1nA
2nA
2nA
350pA
CMRR, G=1V/V
90dB
90dB
80dB
86dB
80dB
90dB
0.25µVpp
0.25µVpp
0.28µVpp
0.07µVpp
0.28µVpp
2µVpp
12nV/√Hz
8nV/√Hz
9nV/√Hz
3.2nV/√Hz
100nV/√Hz
12nV/√Hz
Supply Voltage Range
Offset Voltage Drift (max)
Noise 0.1 to 10Hz
Noise 1kHz
25µs
13µs
15µs
0.8µs
15µs
14µs
(0.01%)
AUP(1k)
$1.85
$2.00
$3-5.00
$2.35
$2.60
$3.76
Package
5x6 SOIC
5x6 SOIC
5x6 SOIC
3x5 MSOP
3x5 MSOP
5x6 SOIC
4x4 DFN
3x5 MSOP
10x8 DIP-8
5x6 SOIC
5x6 SOIC
10x8 DIP-8
Settling T. to 0.001%
2nd Best
Best
“TI Proprietary Information - Strictly Private” or similar placed here if applicable
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INA188 – Industry’s first zero-drift 36V INA
36V | 25µV VOS; 80nV/˚C Drift | RRO Instrumentation Amplifier
Features
• Zero Drift, Super Precision
─ Typically 25uV of input offset voltage and 0.15uV/C with a high input impedance
to provide superb precision and enhance system accuracy
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Discovery
Questions
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Pricing &
Availability
Low Noise
The INA188 has a flat band noise of 12nV/rtH with virtually no 1/f. This makes
attractive for slow moving signals such weigh scales and medical instrumentation
Integrated EMI filters help reject RF injected signals. This is crucial in today’s world
as many devices are often connected at the same time and relayed back to a
central unit
Output Robustness
Capable of driving 1nF of capacitive loads without any compensation, the INA188
is suitable for remote sensing applications where often long cables (capacitance)
are used
INA188 – Industry’s first zero-drift 36V INA
36V | 25µV VOS; 80nV/˚C Drift | RRO Instrumentation Amplifier
Do you need a differential input?
Features
What sort of DC precision (Vos, drift, bias) requirements
do you have?
What type of loads are you driving?
Discovery
Questions
Pricing &
Availability
What is the frequency range of interest?
Do you need an adjustable gain INA (instrumentation
amplifier)?
INA188 – Industry’s first zero-drift 36V INA
36V | 25µV VOS; 80nV/˚C Drift | RRO Instrumentation Amplifier
• Pricing 1Ku
Features
– $1.85
• Availability
Discovery
Questions
– Product Folder: Now
– Samples: Now
– Datasheet: Now
Pricing &
Availability
– Reference Designs: TIPD195
Success Stories: INA188
Industrial Automation
Where We Won
Who: Industrial Automation Customer
What: INA188
Where: Analog Input Module
Volume: 100ku/yr
Why We Won
The chopper stabilized INA188 provides
excellent DC offset and drift
specifications.
This increases accuracy of DC
measurements from I/O modules
especially on most sensitive ranges.
INA188 Input Offset Histogram
(offset in µV)
Call to Action
Potential Markets and Applications
Temperature measurement
High voltage (36V)
Medical Instrumentation
Example Applications
Example Applications
Example Applications
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Test and measurement
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Medical instrumentation
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Industrial weigh scales
Key Differentiations
 Higher voltage with high input
impedance
 Maintains a high SNR
Temperature control and
measurement
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Pressure sensing
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Automatic valve control
Key Differentiations
 Integrated EMI filters
 Help reject noise
 Low gain error helps maintain system
accuracy
ECG Electrocardiogram, Patient
Monitoring
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Optimized for low 1/f noise and low
current noise
Key Differentiations
 Low current noise maintains low
noise floor in the presence of high
impedance sensors