INA217AIP - Low-Noise Instrumentation Amplifier | Texas Instruments
Артикул: INA217AIP ✓ АктивенINA217AIP Обзор
An instrumentation amplifier is a specialized amplifier optimized for measuring low-level differential signals. Its internal signal path rejects common-mode noise while amplifying the voltage difference between two inputs. The INA217 belongs to the instrumentation amplifier, differential amplifier, analog amplifier, and signal-conditioning IC hierarchy, making it suitable for precision sensor conditioning, balanced audio, industrial measurement, and medical instrumentation.
The device uses current-feedback circuitry to provide wide bandwidth and strong dynamic response over a broad gain range. Its distortion-cancellation architecture is intended to maintain low distortion even at higher gain. The manufacturer identifies near-theoretical noise performance for a 200 Ω source impedance, making balanced low-impedance microphone signals a primary use case. The monolithic implementation also provides differential inputs, low noise, and low distortion in one package.
INA217AIP is identified as a replacement for the SSM2017 and is available with the same DIP-8 and wide-body SOL-16 pin arrangements. The DIP-8 format is useful when an existing instrument-amplifier layout must be retained. Its 15 V/µs slew rate supports high-level audio stages, while differential input handling improves rejection of common-mode interference in measurement systems.
Typical applications include professional microphone preamplification, low-level bridge or transducer signal conditioning, industrial process measurement, and medical monitoring. In a microphone circuit, the part processes the differential output of a balanced capsule while rejecting much of the shared noise appearing on both signal conductors. Its low-noise, low-distortion characteristics help preserve the signal-to-noise ratio of the source.
When designing around INA217AIP, preserve the pin arrangement of the original SSM2017 layout and follow the manufacturer datasheet for gain-setting resistors, supply bypass capacitors, and output drive requirements. Check input common-mode range, output swing, and source impedance at the selected gain because instrumentation amplifiers can become input-voltage-range constrained even when their bandwidth remains adequate.
This product page combines the manufacturer electrical description, package information, compatible-device context, and application-level engineering guidance. It also distinguishes direct replacements from alternatives that require different packages, helping designers evaluate PCB reuse, signal bandwidth, and noise performance before committing to a component.
Аналоги без доработки для INA217AIP — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
LT1167ACN8#TRPBF
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
LT1167AIN8#TR
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
SSM2017
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
INA217AIP Максимальные параметры и электрические характеристики
| Device Type | Monolithic instrumentation amplifier |
| Number of Circuits | 1 circuit |
| Корпус | 8-pin PDIP |
| Тип монтажа | Through-hole |
| Supply Voltage Range | 4.5 V to 18 V |
| Typical Gain | 3 V/V |
| Input Offset Voltage | 250 µV |
| Slew Rate | 15 V/µs |
| Bandwidth | 3.4 MHz |
| Input Type | Differential |
| Signal Chain | Current-feedback |
| Reference Source Impedance | 200 Ω |
| Output Drive | High output current drive |
| Output Swing | Wide output voltage swing |
| Primary Audio Use Case | Balanced low-impedance microphone amplification |
| Compatible Legacy Footprint | SSM2017 DIP-8 pin arrangement |
Руководство по цоколевке INA217AIP в корпусе balanced low-impedance microphone amplification
Цоколевка для INA217AIP (корпус balanced low-impedance microphone amplification). Этот аналоговый компонент имеет выводы входа, выхода и питания. Обратитесь к техническому описанию производителя для конфигураций выводов балансировки нуля, коррекции и разрешения. Идеально подходит для схем обработки сигналов и усилителей.
Нет подробных данных о распиновке для INA217AIP.
Обратитесь к даташиту для полной конфигурации выводов.
Типичное применение
INA217AIP подходит для 6 применениеs: Professional Microphone Preamplification, Low-Level Bridge Sensor Conditioning, Medical Signal Acquisition, Balanced Audio Line Amplification, Precision Process Measurement, Audio and Instrumentation Evaluation.
Professional Microphone Preamplification
INA217AIP fits balanced, low-impedance microphone preamplification because Texas Instruments identifies low-level audio as a primary application and describes near-theoretical noise performance for a 200 Ω source impedance. The differential inputs process the difference between the two balanced conductors while rejecting shared common-mode noise. Its listed 3.4 MHz bandwidth and 15 V/µs slew rate preserve signal dynamics, and the distortion-cancellation circuitry supports low distortion at higher gain. The 8-pin PDIP format also supports board revisions based on the SSM2017 arrangement.
Рекомендуется
Low-Level Bridge Sensor Conditioning
INA217AIP is suitable for bridge or transducer outputs that require differential amplification and low noise. Its monolithic instrumentation-amplifier architecture is designed to reject common-mode voltage while amplifying the small differential error signal produced by the sensor. The 250 µV listed input offset voltage, 15 V/µs slew rate, and 3.4 MHz bandwidth provide useful performance for many precision measurement chains. Designers must verify that the bridge excitation voltage and operating point remain inside the amplifier's input common-mode range.
Рекомендуется
Medical Signal Acquisition
INA217AIP can serve as the analog input stage in a medical monitoring system when its noise, distortion, and common-mode behavior match the sensor front end. Differential input handling helps reject interference common to both electrodes or transducer outputs, while the low-noise, low-distortion architecture is advantageous for signals acquired at small amplitudes. The 4.5 V to 18 V supply range supports embedded analog systems. Medical designs should additionally validate patient-protection isolation, leakage, electrode limits, and applicable safety requirements outside the amplifier's core specifications.
Рекомендуется
Balanced Audio Line Amplification
INA217AIP can amplify balanced audio signals while rejecting common-mode hum and interference. Its low-noise design, low distortion, wide bandwidth, and 15 V/µs slew rate make it appropriate for professional line-level stages, monitor electronics, and high-level audio amplification described by the manufacturer. The differential architecture supports clean capture of a balanced source without requiring a separate input subtractor. At the selected gain, verify output headroom and ensure the source impedance remains compatible with the intended low-noise operating point.
Рекомендуется
Precision Process Measurement
INA217AIP is applicable to industrial process-measurement front ends that carry small differential signals over appreciable cable lengths or through noisy environments. Differential amplification reduces susceptibility to common-mode interference, while low noise preserves the integrity of the sensor signal. The listed 250 µV input offset voltage, 3.4 MHz bandwidth, and 15 V/µs slew rate support measurement and control loops requiring accurate, responsive signal conversion. The input common-mode range, output swing, sensor grounding, and shielding strategy must be evaluated for each process installation.
Рекомендуется
Audio and Instrumentation Evaluation
INA217AIP is useful in laboratory and audio-engineering test equipment where low-level differential signals must be measured with controlled gain and low added distortion. Its broad bandwidth supports signal characterization beyond audio frequencies, while the current-feedback architecture maintains dynamic response over a wide gain range. The DIP-8 package allows straightforward prototyping and can also serve legacy SSM2017 layouts. A production instrument should account for the amplifier's input-referred noise, offset, gain-setting resistors, output range, and supply-bypass requirements during calibration.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для INA217AIP — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | LT1167ACN8#TRPBF | LT1167AIN8#TR | SSM2017 |
|---|---|---|---|---|
| Package | 8-pin PDIP | 8-pin PDIP - same package | 8-pin PDIP - same package | 8-pin PDIP - same package |
| Brand | Texas Instruments | Analog Devices | Analog Devices | Analog Devices |
Ключевые отличия
- Explicit SSM2017 footprint compatibility (против SSM2017)
- Documented high dynamic performance (против LT1167ACN8#TRPBF)
- Near-theoretical noise behavior for 200 Ω sources (против SSM2017)
Заметки по проектированию
Do not assume that an 8-pin DIP footprint alone guarantees interchangeability. Before replacing SSM2017, compare the INA217 gain-setting topology, supply limits, input common-mode range, output swing, and quiescent-current requirements with the original circuit. Texas Instruments identifies matching INA217 and SSM2017 package pin arrangements, but the external resistor network and operating voltages must still be reviewed against the datasheet.
Place supply-bypass capacitors close to the supply pins and route the differential input pair as a compact, symmetric pair. Keep sensitive input traces away from clocks, switching-node copper, and other high-current paths. Because the instrumentation amplifier rejects common-mode noise, the benefit depends on keeping both input conductors in a similar electromagnetic environment rather than treating the two inputs as unrelated signals.
Check input common-mode range and output swing at the intended gain before finalizing the circuit. The 4.5 V to 18 V supply specification does not guarantee that every input and output voltage is valid at every gain. Use the gain and bandwidth curves in the manufacturer datasheet to confirm that source impedance, cable capacitance, and sensor output impedance will not reduce stability or distort the measured signal.
Follow the manufacturer guidance for bypass capacitance and supply sequencing when powering the instrumentation amplifier. The INA217's low-noise performance depends on clean supply rails and correctly connected input and output references. Use independent analog ground routing where appropriate, avoid routing return current from high-current loads through the input reference path, and verify the output can drive the selected load without clipping.
Информация о соответствии
The manufacturer product page and published technical descriptions do not explicitly state the requested compliance fields for INA217AIP. AEC-Q100 qualification is not stated and is therefore treated as not applicable.