OPA192ID - 36V Precision Rail-to-Rail Op Amp | Texas Instruments
MPN: OPA192ID ✓ AktifOPA192ID Genel Bakış
An operational amplifier is an active analog building block used to amplify, buffer, filter, and compare signals. The OPA192 family belongs to the precision operational-amplifier category, combining low offset, low noise, high common-mode rejection, and broad input and output swing. This combination makes the amplifier useful when a system must preserve small signals while operating across industrial, instrumentation, test, measurement, and control applications.
The rail-to-rail input stage accepts signals close to the supply rails, while the rail-to-rail output stage allows the output to approach the available output limits. The low-offset architecture and e-trim calibration support stable DC measurements, while the 10 MHz bandwidth enables signal processing beyond traditional precision-amplifier bandwidth. The 140 dB CMRR helps reject common-mode interference in systems with long signal paths or nearby switching circuitry.
OPA192 is suitable for precision measurement, current sensing, sensor conditioning, buffer amplifiers, programmable-gain stages, and low-level analog signal chains. The high-voltage operating capability is useful when the signal or supply range exceeds that of many conventional precision op amps. Designers should still verify input and output limits, load conditions, stability, and thermal limits against the manufacturer datasheet for the selected supply and operating conditions.
The OPA192ID package is an 8-pin SOIC. Place input and output components close to the device, provide suitable bypass capacitance near the supply pins, and keep sensitive input traces short and away from switching nodes. For new designs where higher channel density or different packaging is required, the OPA2192 and OPA4192 family members provide dual- and quad-channel options rather than a direct pin-for-pin replacement.
This product page combines the manufacturer specifications, package information, application guidance, pricing evidence, and carefully qualified drop-in alternatives for engineers evaluating the OPA192ID.
Drop-in alternatifler için OPA192ID — aynı paket, pin-başına uyumlu. PCB yeniden montajı gerektiren farklı paket bileşenleri dışlanmıştır.
Bu Serideki Variantlar
Yedek parça uyumlu olan aynı serideki modeller OPA192ID (aynı form faktörü ve ayağa oturma) — farklı olan Input Offset Voltage, Input Offset Voltage Drift, Output Swing, Package.
OPA192IPD
✅ Yerleştirme ⚠️ Onaylanmamış Özellikler📋 Katalogda Olmayan Referans Alternatifi
OPA192UID
✅ Yerleştirme ⚠️ Onaylanmamış Özellikler📋 Katalogda Olmayan Referans Alternatifi
OPA192IPDR
✅ Yerleştirme ⚠️ Onaylanmamış Özellikler📋 Katalogda Olmayan Referans Alternatifi
OPA192ID Maksimum Değerlendirmeler & Elektriksel Özellikler
| Product Type | Single-channel precision operational amplifier |
| Supply Voltage Maximum | 36 V |
| Input Offset Voltage | ±5 µV typical |
| Input Offset Voltage Drift | ±0.2 µV/°C typical |
| Input Noise Voltage | 5.5 nV/√Hz at 1 kHz |
| Common-Mode Rejection | 140 dB |
| Input Bias Current | ±5 pA |
| Gain-Bandwidth Product | 10 MHz |
| Input Common-Mode Range | Rail-to-rail |
| Output Swing | Rail-to-rail |
| Paket | 8-pin SOIC |
| Montaj Türü | Surface mount |
| Trim Technology | e-trim |
OPA192ID Pin Yapısı
| Pin 1 | NC — Not connected (per datasheet) |
| Pin 2 | IN- — Inverting input |
| Pin 3 | IN+ — Non-inverting input |
| Pin 4 | V- — Negative supply connection |
| Pin 5 | NC — Not connected (per datasheet) |
| Pin 6 | OUT — Output |
| Pin 7 | V+ — Positive supply connection |
| Pin 8 | NC — Not connected (per datasheet) |
Tipik Uygulamalar
OPA192ID için uygundur 6 uygulamas: Precision Current Sensing, Precision Bridge Sensor Conditioning, High-Impedance Sensor Buffering, Active Filtering and Signal Conditioning, Test and Measurement Instrumentation, Industrial Process Monitoring.
Precision Current Sensing
The OPA192ID is well suited to amplifier-based current sensing because its ±5 µV typical offset and ±0.2 µV/°C typical drift help preserve small differential signals. The 140 dB CMRR rejects common-mode voltage present across a high-current shunt, while the ±5 pA bias current minimizes loading. Rail-to-rail input and output operation provides useful signal range flexibility in instrumentation supplied from elevated rails. In a typical shunt amplifier, the OPA192ID can amplify the millivolt-level shunt voltage with high DC stability, although resistor accuracy, input bias effects, and common-mode limits must be evaluated against the final shunt range.
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Precision Bridge Sensor Conditioning
For bridge or strain-gauge front ends, the OPA192ID provides low offset, low drift, and 5.5 nV/√Hz input noise at 1 kHz, helping preserve small differential outputs from resistive sensors. Its 140 dB common-mode rejection reduces errors when the bridge is excited by a larger common-mode voltage. The rail-to-rail output stage allows substantial output swing, and the 10 MHz bandwidth supports practical filter bandwidth. Designers should still use low-noise gain resistors, verify excitation and input common-mode limits, and account for resistor tolerance and sensor self-heating.
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High-Impedance Sensor Buffering
The OPA192ID's ±5 pA typical input bias current makes it useful for buffering high-impedance sensors where amplifier input current could otherwise create a measurement error. Rail-to-rail input operation permits sensing near the supply rails, and the low-offset architecture helps preserve DC accuracy. The device can serve as a unity-gain buffer ahead of a converter when the source impedance is high, but source capacitance, noise, and stability should be checked. The 10 MHz bandwidth provides enough bandwidth for many sensor signals while retaining low-noise precision characteristics.
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Active Filtering and Signal Conditioning
OPA192ID is appropriate for active filters and general signal-conditioning blocks where low offset, low noise, high CMRR, and 10 MHz bandwidth are useful together. The low drift helps preserve filter and amplifier accuracy over temperature, while rail-to-rail input and output operation increases usable signal headroom. It can implement non-inverting, inverting, or differential stages using standard external resistors. Component tolerances, noise-gain stability, capacitive loading, and the amplifier's output-current limits should be evaluated during design; a 10 MHz gain-bandwidth product does not guarantee stability at every gain or noise-gain setting.
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Test and Measurement Instrumentation
The OPA192ID fits precision instrumentation where signals must be buffered without significant DC error, including laboratory sources, measurement front ends, and programmable test systems. Its 36 V maximum supply rating provides headroom for higher-voltage input networks, while rail-to-rail I/O improves usable range. Low offset drift of ±0.2 µV/°C and 140 dB CMRR support stable measurements near the input limits. The amplifier still requires careful layout around sensitive nodes, low-leakage PCB materials where appropriate, and consideration of input protection, settling time, and calibration requirements.
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Industrial Process Monitoring
OPA192ID can condition low-level industrial sensor outputs when the system operates from a relatively high supply voltage and requires better DC precision than a general-purpose amplifier. Rail-to-rail inputs and outputs are valuable in process-control interfaces where signal levels span much of the available range. The 140 dB CMRR helps reject common-mode noise from long sensor wiring, while 5.5 nV/√Hz noise supports low-level measurements. Industrial implementations should include suitable transient protection, isolation or filtering as required, and thermal verification around hot equipment.
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Önerilen Ürünler Özeti
Mühendislik referans verileri: OPA192ID — karşılaştırma, tasarım rehberi ve uyumluluk bilgileri.
Seçim Kılavuzu
Alternatiflerle Karşılaştırma
| Parametre | Bu Ürün | OPA192IPD | OPA192UID | OPA192IPDR |
|---|---|---|---|---|
| Package | 8-pin SOIC | 8-pin SOIC | 8-pin SOIC | 8-pin SOIC |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Supply Voltage Maximum | 36 V | 36 V | 36 V | 36 V |
| Input Offset Voltage | ±5 µV typical | ±5 µV typical | ±5 µV typical | ±5 µV typical |
| Input Offset Voltage Drift | ±0.2 µV/°C typical | ±0.2 µV/°C typical | ±0.2 µV/°C typical | ±0.2 µV/°C typical |
| Input Noise Voltage | 5.5 nV/√Hz at 1 kHz | 5.5 nV/√Hz at 1 kHz | 5.5 nV/√Hz at 1 kHz | 5.5 nV/√Hz at 1 kHz |
| Common-Mode Rejection | 140 dB | 140 dB | 140 dB | 140 dB |
| Gain-Bandwidth Product | 10 MHz | 10 MHz | 10 MHz | 10 MHz |
| Input Common-Mode Range | Rail-to-rail | Rail-to-rail | Rail-to-rail | Rail-to-rail |
| Output Swing | Rail-to-rail | Rail-to-rail | Rail-to-rail | Rail-to-rail |
| Trim Technology | e-trim | e-trim | e-trim | e-trim |
Ana Farklılayıcılar
- High-voltage precision signal conditioning (karşılaştırma:OPA192IPD)
- Very low input offset (karşılaştırma:OPA192UID)
- Precision and bandwidth combination (karşılaştırma:OPA192IPDR)
Tasarım Notları
Route the inverting and non-inverting inputs as short, guarded traces directly to the OPA192ID pins. Keep the input nodes away from supply bypass connections, clock lines, inductors, and switching-node copper. A solid ground plane helps return injected noise, but avoid placing high-current return paths beneath sensitive input traces. For high-impedance sources, account for PCB surface leakage and contamination in addition to the amplifier's ±5 pA typical bias current.
Use the manufacturer-recommended supply-bypass network and place it adjacent to pins 4 and 7. Select capacitors with adequate effective capacitance at the actual supply voltage because ceramic capacitance can fall substantially with DC bias. Keep the bypass return short and use a dedicated, low-impedance ground reference where possible. Verify output-current capability against the load because rail-to-rail output does not guarantee unlimited drive into heavy capacitive or low-resistance loads.
Do not assume that rail-to-rail input and output operation permits input voltages outside the absolute maximum ratings. Check common-mode voltage, output swing, supply sequencing, and output-current conditions in the OPA192 datasheet before energizing a new board. Also verify stability at the intended noise gain: a 10 MHz gain-bandwidth product does not guarantee that every gain, load, and output-capacitance combination is stable.
For small-signal measurements, use low-noise gain resistors and avoid excessive resistor values that increase Johnson noise and bias-current error. Keep compensation and feedback components close to the amplifier, and use the shortest practical feedback path. If driving an ADC, check the amplifier settling behavior against the converter acquisition time instead of relying only on bandwidth. OPA192ID's low offset and noise are valuable only when the complete signal path preserves them.
Uyumluluk Bilgisi
The provided product information does not explicitly state RoHS, REACH, lead-free, halogen-free, or conflict-minerals status. The OPA192ID is a general-purpose precision operational amplifier rather than an automotive-qualified variant.