LM2902AQS14-13 - Quad 36V Automotive Op Amp | Diodes
MPN: LM2902AQS14-13 ✓ نشطLM2902AQS14-13 نظرة عامة
An operational amplifier is a voltage-gain circuit that compares an inverting input with a non-inverting input and drives its output toward the difference between them. Operational amplifiers belong to the broader analog IC and signal-conditioning hierarchy. They are commonly used for sensor amplification, error amplification, voltage buffering, filtering, and analog-to-digital converter input conditioning. The LM2902 family is intended for general-purpose designs where four amplifiers and relatively wide supply-voltage tolerance provide more utility than a single precision amplifier.
The principal electrical features include a 3V to 36V single-supply operating range, operation from ±1.5V to ±18V on dual supplies, and supply-current drain that is largely independent of supply voltage. Each amplifier supports rail-to-rail input operation, has a typical input bias current of 20 nA, and offers a typical open-loop DC gain of 100 dB. The temperature-compensated unity-gain bandwidth is 700 kHz, while the listed slew rate is 0.3 V/µs.
The A-grade offset specification is 1 mV typical, making the device suitable for general signal-conditioning applications that do not require the tighter matching of a precision instrumentation amplifier. Internally compensated amplifiers simplify closed-loop gain selection, and the four independent channels can implement separate gain, filtering, comparison, buffering, or feedback functions. Their broad supply range also permits operation from industrial 24V supplies when designers observe the absolute maximum and common-mode limits.
Typical uses include automotive sensor interfaces, industrial control loops, battery-powered instrumentation, transducer signal conditioning, low-current motor control, analog monitoring, and multichannel test equipment. The 14-pin SOIC footprint supports conventional surface-mount assembly and is useful when four channels must fit into one package. Common-mode and output-swing headroom should be checked against the actual signal and load because a wide supply rating does not mean the inputs and outputs can reach every supply rail under all conditions.
A practical design starts by confirming the automotive-compliant variant requirement, power-supply range, input common-mode range, output swing, load capability, and noise-sensitive signal path. Decoupling capacitors should be placed close to the supply pins, and unused amplifier inputs must be biased so they remain in a defined state. The SOIC package should be inspected for assembly-layout requirements and the complete operating limits in the manufacturer datasheet.
This product overview combines the LM2902AQS14-13 electrical characteristics with package guidance, design considerations, and verified drop-in comparison options. It is intended to help engineers evaluate channel count, supply tolerance, offset performance, bandwidth, and automotive suitability before committing to a PCB design.
بدائل مباشرة لـ LM2902AQS14-13 — نفس الحزمة، متوافق دبوس بدبوس. تُستثنى القطع ذات الحزم المختلفة التي تتطلب تعديل PCB.
الطرازات في هذه السلسلة
طرازات من نفس السلسلة متوافقة تمامًا مع LM2902AQS14-13 (نفس عامل الشكل والبصمة) — يختلف في Package, Amplifier Type, Input Offset Voltage, Output Type.
LM2902DR
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←LM324DR
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←LM2902AQS14-13 الحدود القصوى والخصائص الكهربائية
| Amplifier Type | General-purpose operational amplifier |
| Number of Circuits | 4 circuits |
| Single-Supply Voltage Range | 3 V to 36 V |
| Dual-Supply Voltage Range | ±1.5 V to ±18 V |
| Supply Current Drain | 700 µA |
| Input Bias Current | 20 nA |
| Input Offset Voltage | 1 mV typical for A version |
| DC Voltage Gain | 100 dB |
| Unity-Gain Bandwidth | 700 kHz |
| Slew Rate | 0.3 V/µs |
| Input Common-Mode Capability | Rail-to-rail input |
| Compensation | Internally compensated |
| العلبة | 14-pin SOIC |
| نوع التركيب | Surface mount |
| Automotive Compliance | Automotive compliant |
تكوين أطراف LM2902AQS14-13
| دبوس 1 | OUT1 — Amplifier 1 output |
| دبوس 2 | IN1- — Amplifier 1 inverting input |
| دبوس 3 | IN1+ — Amplifier 1 non-inverting input |
| دبوس 4 | V+ — Positive supply voltage |
| دبوس 5 | IN2+ — Amplifier 2 non-inverting input |
| دبوس 6 | IN2- — Amplifier 2 inverting input |
| دبوس 7 | OUT2 — Amplifier 2 output |
| دبوس 8 | OUT3 — Amplifier 3 output |
| دبوس 9 | IN3+ — Amplifier 3 non-inverting input |
| دبوس 10 | IN3- — Amplifier 3 inverting input |
| دبوس 11 | V- — Negative supply voltage |
| دبوس 12 | IN4+ — Amplifier 4 non-inverting input |
| دبوس 13 | IN4- — Amplifier 4 inverting input |
| دبوس 14 | OUT4 — Amplifier 4 output |
التطبيقات النموذجية
LM2902AQS14-13 مناسب لـ 6 التطبيقs: Automotive Sensor Signal Conditioning, Industrial 24V Control Loops, Battery-Powered Instrumentation, Transducer Signal Conditioning, Analog-to-Digital Converter Input Conditioning, Multichannel Test and Measurement.
Automotive Sensor Signal Conditioning
The LM2902AQS14-13 fits automotive sensing interfaces requiring four channels, a 3V-to-36V supply range, and low input bias current. Its 20 nA typical bias current reduces loading on high-impedance sensors, while rail-to-rail input operation supports a broad range of signal excursions. The A-grade 1 mV typical offset is useful when scaling sensor outputs toward an ADC. Four channels can amplify, filter, buffer, or offset multiple sensing paths without requiring separate packages. Automotive qualification details and temperature limits must be confirmed for the exact ordering option before production release.
موصى به
Industrial 24V Control Loops
The LM2902AQS14-13 is suitable for industrial control boards powered from a nominal 24V rail because the manufacturer specifies operation from 3V to 36V. Four internally compensated amplifiers can form error amplifiers, current-loop elements, or signal-conditioning stages. The approximately 700 µA supply-current drain helps control board-level consumption, and the 0.3 V/µs slew rate supports signals beyond pure DC. Designers should confirm output-swing headroom, load capability, common-mode limits, and thermal performance for each chosen supply and operating-temperature condition.
موصى به
Battery-Powered Instrumentation
The LM2902AQS14-13 can front-end low-power instrumentation because its supply-current drain is approximately 700 µA and is largely independent of supply voltage. The four channels provide economical parallel conditioning for current, voltage, and resistance measurements. A 20 nA typical input bias current is valuable with high-impedance sensors, while 1 mV typical input offset supports modest measurement resolution. Battery designs should account for the amplifier's quiescent consumption, output-current limits, common-mode range, and the duty cycle of each channel rather than treating the 700 µA figure as the complete system demand.
موصى به
Transducer Signal Conditioning
The LM2902AQS14-13 can amplify and buffer outputs from pressure, position, level, and other transducers. Its 100 dB typical DC gain and 1 mV typical offset provide useful precision for general-purpose analog channels, while 20 nA input bias current limits disturbance of high-impedance sources. The four independent amplifiers can implement gain, active filtering, and output buffering around multiple sensing elements. The 700 kHz unity-gain bandwidth is appropriate for many low-frequency industrial signals, but designers should verify source impedance, capacitive loading, settling requirements, and output drive before selecting the closed-loop configuration.
موصى به
Analog-to-Digital Converter Input Conditioning
The LM2902AQS14-13 can condition sensor outputs before an ADC by providing gain, offset correction, filtering, and impedance buffering in one quad package. Rail-to-rail input operation increases the usable input range in many single-supply systems, and the A-grade 1 mV typical offset helps preserve small-signal accuracy. With 700 kHz unity-gain bandwidth, it suits many moderate-bandwidth acquisition channels rather than demanding high-speed sampling systems. Check the ADC's input range, acquisition time, kickback behavior, and required settling margin, and ensure the amplifier output remains within its specified swing under the expected load.
موصى به
Multichannel Test and Measurement
The LM2902AQS14-13 can provide four general-purpose analog channels in compact test equipment such as process monitors, educational instruments, and low-level measurement interfaces. Its 3V-to-36V supply range permits flexible rail selection, while the 100 dB typical open-loop gain and 1 mV typical offset support accurate closed-loop amplification. Internally compensated operation reduces the number of external stability components. Performance at higher frequencies should be evaluated against the 700 kHz unity-gain bandwidth, and low-level designs should account for input-referred noise, offset error, and resistor-network tolerances that the typical gain and offset figures do not eliminate.
موصى به
ملخص المنتجات الموصى بها
بيانات مرجعية هندسية لـ LM2902AQS14-13 — المقارنة وإرشادات التصميم ومعلومات الامتثال.
دليل الاختيار
المقارنة مع البدائل
| المعامل | هذا المنتج | LM2902DR | LM324DR |
|---|---|---|---|
| Package | SOIC-14 | SOIC-14 | SOIC-14 |
| Brand | Diodes Incorporated | Texas Instruments | Texas Instruments |
| Number of Amplifiers | 4 circuits | 4 circuits | 4 circuits |
| Maximum Supply Voltage | 36 V | 36 V | 36 V |
| Automotive Compliance | Automotive compliant | Standard ordering option | Standard ordering option |
أبرز الفروقات
- Automotive-compliant ordering option (مقابلLM2902DR)
- A-grade input offset specification (مقابلLM2902DR)
- Four general-purpose channels in one SOIC-14 (مقابلLM324DR)
ملاحظات التصميم
Place the power-supply bypass capacitor adjacent to the SOIC supply and ground pins, and keep the high-current return path short. The LM2902AQS14-13 supports a 3V-to-36V supply range, but long supply traces can add impedance and allow switching-node noise to appear directly at the amplifier inputs. Route sensitive input and feedback nets away from inductors, power switches, motor traces, and other high-current paths.
Do not assume rail-to-rail input operation means the output can swing exactly to either supply rail. Verify output swing at the intended load, output-current limit, input common-mode range, and supply configuration in the manufacturer datasheet. Also avoid leaving an unused amplifier input floating; bias each unused non-inverting input to a defined reference within the common-mode range to prevent unintended output movement.
The listed 700 kHz unity-gain bandwidth and 0.3 V/µs slew rate make the device appropriate for many low-frequency industrial and automotive conditioning stages, but they do not imply high-speed ADC settling performance. For capacitive loads, add an isolation resistor close to the output when required, and check closed-loop stability against the actual load capacitance and feedback network. For precision DC measurements, include input offset, bias current, resistor tolerance, and drift in the error budget.
Estimated power dissipation can be calculated as (VIN − VOUT) multiplied by the load current plus supply-related quiescent dissipation. For example, using a 12 V input, 5 V output, and 10 mA load gives an estimated load-related dissipation of 70 mW before quiescent losses. Actual junction temperature depends on the SOIC thermal resistance, board copper, ambient temperature, and automotive temperature grade, all of which should be evaluated with the manufacturer's thermal information.
معلومات الامتثال
The manufacturer description identifies the LM2902AQS14-13 as automotive compliant. RoHS, REACH, lead-free, halogen-free, and conflict-minerals declarations were not present in the available product data.