INA101CM - 25uV Instrumentation Amplifier | Texas Instruments
MPN: INA101CM ✓ সক্রিয়INA101CM সারাংশ
An instrumentation amplifier is a specialized analog amplifier optimized for measuring small signals embedded in larger common-mode voltages. It typically combines three precision operational amplifiers with laser-trimmed metal-film resistors to provide high differential input impedance, accurate gain, and strong rejection of common-mode interference. Within the analog IC hierarchy, an instrumentation amplifier is a precision amplifier used for sensor conditioning, data acquisition, and industrial measurement systems.
The INA101CM combines three precision operational amplifiers and laser-trimmed metal-film resistors on one monolithic integrated circuit. Its maximum input offset voltage is 25 uV, while maximum input drift is 0.25 uV/°C. Low nonlinearity of 0.002% supports predictable signal transfer, and the 13 nV/√Hz noise specification makes the amplifier suitable for low-level bridge, thermocouple, and resistance-temperature-detector signals.
A common-mode rejection ratio of 106 dB at 60 Hz helps suppress mains-related interference and other signals shared equally by both inputs. The differential input resistance is approximately 10 GΩ, reducing loading on high-impedance sources. The listed operating supply range is ±5 V to ±20 V, and the typical slew rate is 0.4 V/µs. Listed bandwidth figures range from 25 kHz to 300 kHz across source descriptions, so the manufacturer datasheet should be consulted for gain-specific bandwidth limits.
Typical uses include strain-gauge bridge conditioning, thermocouple and RTD signal acquisition, industrial process measurement, medical instrumentation, and remote sensor interfaces. The device is particularly useful when a millivolt-level differential signal must be amplified while rejecting substantial common-mode voltage present in industrial wiring environments.
When designing around the INA101CM, verify the gain-set resistor values against the manufacturer gain equation and check bandwidth at the selected gain. Keep input and reference-pin traces short, use a low-noise reference when gain adjustment is required, and provide stable bypass capacitance close to the supply pins. The 10-pin TO-100 package also requires adequate lead clearance and appropriate thermal consideration at elevated ambient temperatures.
This product page combines the manufacturer electrical characteristics, package information, replacement guidance, application fit, and design considerations to support faster engineering evaluation. The INA101CM datasheet remains the controlling document for pin assignments, gain curves, absolute maximum ratings, and orderable option details.
এর জন্য ড্রপ-ইন বিকল্প INA101CM — একই package, pin-to-pin compatible। ভিন্ন package-এর যেসব পার্টে PCB rework প্রয়োজন সেগুলো বাদ দেওয়া হয়েছে।
INA101CM1
✅ ড্রপ-ইন📋 রেফারেন্স বিকল্প (ক্যাটালগে নেই)
INA101CM-BSS4
✅ ড্রপ-ইন📋 রেফারেন্স বিকল্প (ক্যাটালগে নেই)
INA101CM সর্বোচ্চ রেটিং ও বৈদ্যুতিক বৈশিষ্ট্য
| Product Type | Very-high-accuracy instrumentation amplifier |
| Number of Channels | 1 amplifier circuit |
| Maximum Input Offset Voltage | 25 uV |
| Maximum Input Offset Drift | 0.25 uV/°C |
| Maximum Nonlinearity | 0.002% |
| Input Noise | 13 nV/√Hz |
| Common-Mode Rejection Ratio | 106 dB at 60 Hz |
| Differential Input Resistance | Approximately 10 GOhm |
| Supply Voltage Range | ±5 V to ±20 V |
| Typical Slew Rate | 0.4 V/µs |
| Listed Gain-Bandwidth Product | 25 kHz |
| Listed Bandwidth | 300 kHz |
| Maximum Power Dissipation | 600 mW |
| Integrated Amplifier Count | 3 precision operational amplifiers |
| Internal Resistance Type | Laser-trimmed metal-film resistors |
| প্যাকেজ | 10-pin TO-100 |
| মাউন্টিং টাইপ | Through-hole |
| Supported Package Family | 14-pin plastic DIP, 16-pin ceramic DIP, and TO-100 family options |
INA101CM 14-pin plastic dip, 16-pin ceramic dip, and to-100 family options পিন কনফিগারেশন গাইড
INA101CM (14-pin plastic dip, 16-pin ceramic dip, and to-100 family options প্যাকেজ)-এর পিন কনফিগারেশন। এই অ্যানালগ কম্পোনেন্টে ইনপুট, আউটপুট ও পাওয়ার সাপ্লাই পিন রয়েছে। অফসেট নাল, কম্পেনসেশন ও এনেবল পিন কনফিগারেশনের জন্য প্রস্তুতকারকের ডেটাশিট দেখুন। সিগন্যাল কন্ডিশনিং ও অ্যামপ্লিফায়ার সার্কিটের জন্য আদর্শ।
এর জন্য বিস্তারিত পিনআউট ডেটা পাওয়া যায়নি INA101CM.
দেখুন ডেটাশিট সম্পূর্ণ পিন কনফিগারেশনের জন্য।
সাধারণ ব্যবহার
INA101CM এর জন্য উপযুক্ত 6 অ্যাপ্লিকেশনs: Strain-Gauge Bridge Conditioning, Thermocouple Measurement, RTD Sensor Interface, Remote Sensor Data Acquisition, Medical Instrumentation, Precision Laboratory Instrumentation.
Strain-Gauge Bridge Conditioning
The INA101CM fits strain-gauge bridge front ends that produce millivolt-level differential signals while the bridge common-mode voltage remains much larger. Its 25 uV maximum offset, 0.25 uV/°C maximum drift, and 106 dB common-mode rejection at 60 Hz help reduce gain error and interference from the excitation environment. Place the amplifier close to the bridge and use short, shielded differential traces to minimize pickup. The 10-pin TO-100 package requires adequate board spacing, while the ±5 V to ±20 V supply range supports common laboratory and industrial bridge excitations with appropriate headroom.
সুপারিশকৃত
Thermocouple Measurement
The INA101CM is appropriate for low-level thermocouple acquisition because the 13 nV/√Hz input noise and 25 uV maximum offset reduce errors relative to small temperature-dependent voltages. Its 106 dB CMRR at 60 Hz is valuable when long thermocouple wires pick up power-frequency interference. Use a cold-junction compensation reference, input filtering with the correct differential resistance, and protection suitable for the measured voltage range. The ±5 V to ±20 V supply operation gives adequate output swing for many industrial thermocouple transmitters while preserving a conventional through-hole footprint.
সুপারিশকৃত
RTD Sensor Interface
The INA101CM can amplify resistance-temperature-detector signals where excitation current creates a small differential voltage across the sensor. Low offset drift of 0.25 uV/°C helps maintain accuracy as ambient temperature changes, while approximately 10 GOhm differential input resistance limits source loading. Choose a precision excitation source and ratio-reference the measurement when greater stability is required. Keep the amplifier inputs away from switching nodes and use guarded traces to reduce leakage and thermoelectric errors in precision installations.
সুপারিশকৃত
Remote Sensor Data Acquisition
The INA101CM is useful in remote-sensor front ends where long cable runs expose the measurement to substantial common-mode noise. Its 106 dB common-mode rejection at 60 Hz attenuates shared interference, while the 10 GOhm input resistance reduces loading from high-impedance sensors. The device can amplify low-level signals before an ADC or transmitter stage, reducing the need to recover those signals digitally after substantial cable corruption. Add input protection, filtering, and a solid analog ground reference based on the installation's surge and grounding requirements.
সুপারিশকৃত
Medical Instrumentation
The INA101CM supports precision bioinstrumentation and laboratory measurement circuits that operate with small differential signals superimposed on larger common-mode voltages. Its 13 nV/√Hz noise, 25 uV maximum offset, and 0.002% maximum nonlinearity improve signal fidelity before digitization. Medical equipment designs must add the required patient protection, isolation, leakage-current control, and safety verification at the system level. The TO-100 package is useful where a through-hole, inspectable layout is preferred and the board area permits a 10-pin metal-package footprint.
সুপারিশকৃত
Precision Laboratory Instrumentation
The INA101CM fits laboratory instruments that amplify small differential signals while rejecting common-mode noise from oscillators, transducers, or long test leads. Its 25 uV offset limit and 0.25 uV/°C drift support stable measurements over changing bench temperatures, and the 106 dB CMRR at 60 Hz improves rejection of mains-related pickup. The conventional 10-pin TO-100 package simplifies construction of modular analog front-end boards. Select the external gain resistor and bypass capacitors according to the Texas Instruments INA101 datasheet, and validate noise and settling performance for the intended measurement bandwidth.
সুপারিশকৃত
সুপারিশকৃত পণ্যের সারসংক্ষেপ
এর জন্য ইঞ্জিনিয়ারিং রেফারেন্স ডেটা INA101CM — তুলনা, ডিজাইন গাইডেন্স এবং কমপ্লায়েন্স তথ্য।
নির্বাচন গাইড
বিকল্পের সাথে তুলনা
| পারামিটার | এই পণ্য | INA101CM1 | INA101CM-BSS4 |
|---|---|---|---|
| Package | TO-100-10 | TO-100-10 | TO-100-10 |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments |
| Product Type | Instrumentation amplifier | Instrumentation amplifier | Instrumentation amplifier |
মূল পার্থক্যসমূহ
- Low offset and drift suit precision sensor measurements (বনামINA101CM-BSS4)
- High rejection of 60 Hz common-mode interference (বনামINA101CM1)
- Legacy-compatible through-hole footprint (বনামINA101CM1)
ডিজাইন নোট
Keep the INA101 input, reference, and gain-resistor connections short and away from clocks, relays, and high-current switching paths. Place input filtering capacitors at the connector or sensor side when they are required for EMI control, and use symmetric input routing to minimize conversion of common-mode interference into differential error. The approximately 10 GOhm input resistance reduces sensor loading but does not eliminate leakage caused by contaminated boards or conformal coating.
Design the supply rails so every pin remains within the manufacturer's absolute maximum limits under startup, shutdown, and fault conditions. Although the listed operating range is ±5 V to ±20 V, the usable input and output range is narrower. Place stable bypass capacitors close to the supply pins, provide adequate energy storage for transient loads, and account for the ±20 V maximum condition when selecting protection and isolation components.
Calculate INA101CM dissipation from the actual output voltage, load current, and supply configuration rather than using the 600 mW published maximum as an operating target. For a resistive load, estimated dissipation is the quiescent power plus the voltage dropped across the amplifier multiplied by load current. Use that estimate with the manufacturer thermal information and the PCB copper area to confirm that junction temperature remains below its allowed limit.
Gain accuracy depends on the external gain-setting resistor and the accuracy of the reference arrangement. Use the manufacturer gain equation to select the resistor network, avoid unnecessarily high gain when bandwidth is insufficient, and verify settling behavior for the selected gain. When using the reference input, keep it low impedance and bypass it close to the device to prevent injected noise from increasing output error.
Do not treat all INA101 package options as interchangeable: the family includes plastic and ceramic DIP variants as well as TO-100 packages. Confirm the exact INA101CM orderable suffix, lead numbering, temperature grade, and pin functions before changing an existing design. Also check whether the source material's bandwidth description applies to a different gain condition rather than comparing a broad family figure directly with a required small-signal bandwidth.
কমপ্লায়েন্স তথ্য
Use the manufacturer product page and datasheet for current environmental, material, and automotive qualification statements.
