LM2902KVQPWR - Quad 30V 1.2MHz Op Amp | Texas Instruments
부품 번호: LM2902KVQPWR ✓ 활성LM2902KVQPWR 개요
An operational amplifier, commonly called an op amp, is an analog semiconductor that uses high-gain differential amplification to compare two input voltages and drive an output according to their difference. The LM2902KV belongs to the operational amplifier hierarchy, which includes general-purpose amplifiers, voltage-feedback amplifiers, analog signal-conditioning ICs, and broader semiconductor components. Its four independent amplifiers can support multiple channels within one package.
The principal features include a 30 V maximum supply rating, 1.2 MHz gain-bandwidth product, and 2 kV ESD protection. The four-amplifier configuration reduces board area in designs requiring several independent analog channels. According to the Texas Instruments LM2902KV product page, the KV version provides improved ESD capability while retaining the familiar LM2902-family architecture and extended operation from -40°C to 125°C.
The LM2902 family is designed for general-purpose applications where economy, input-voltage range, and multiple channels are more important than precision or high-speed performance. Its relatively wide supply capability makes it suitable for circuits operating from industrial control voltages as well as lower-voltage systems. The 1.2 MHz gain-bandwidth product supports low-frequency signal conditioning, buffering, amplification, summation, filtering, and comparator-style threshold functions when operated with suitable feedback networks.
Typical uses include industrial sensor interfaces, transducer signal conditioning, low-frequency active filters, analog summing amplifiers, instrumentation buffers, and general control-system analog channels. Because four amplifiers are integrated in one package, it can also reduce component count in multi-channel sensor, monitoring, and data-acquisition designs where channel-to-channel consistency and compact implementation are beneficial.
Designers should account for input common-mode range, output swing, supply headroom, stability with the selected feedback network, input bias current, and the effects of capacitive loading. Decoupling capacitors should be placed close to the supply pins, and sensitive inputs should be routed away from high-current switching nodes. The TSSOP package requires careful assembly practices because its fine lead pitch can increase solder-bridging risk.
This product page combines the manufacturer specifications, package details, application guidance, and qualified drop-in comparisons to simplify component selection. It also highlights the distinctions between the original LM2902 variants and the improved LM2902KV device, helping engineers confirm compatibility before changing an existing 14-pin TSSOP design.
드롭인 대체품: LM2902KVQPWR — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: LM2902KVQPWR (동일 폼 팩터 및 풋프린트) — 차이점: Package, Amplifier Type, Maximum Supply Voltage, Number of Amplifiers.
LM2902PWRG4
✅ 드롭인가격 문의
데이터시트 보기 →LM2902PWRG3
✅ 드롭인가격 문의
데이터시트 보기 →LM2902PWRG3
✅ 드롭인가격 문의
데이터시트 보기 →LM2902QPWRQ1
✅ 드롭인가격 문의
데이터시트 보기 →LM2902KAVQPWRQ1
✅ 드롭인가격 문의
데이터시트 보기 →LM2902KVQPWR 최대 정격 & 전기적 특성
| Amplifier Type | Quad general-purpose operational amplifier |
| Number of Circuits | 4 circuits |
| Maximum Supply Voltage | 30 V |
| Gain-Bandwidth Product | 1.2 MHz |
| ESD Protection | 2 kV |
| 동작 온도 범위 | -40°C to 125°C |
| 패키지 | 14-pin TSSOP (PW) |
| 핀 수 | 14 pins |
| 실장 유형 | Surface mount |
LM2902KVQPWR 핀 구성
| 핀 1 | OUT1 — Amplifier 1 output |
| 핀 2 | IN1- — Amplifier 1 inverting input |
| 핀 3 | IN1+ — Amplifier 1 non-inverting input |
| 핀 4 | V+ — Positive supply connection |
| 핀 5 | IN2+ — Amplifier 2 non-inverting input |
| 핀 6 | IN2- — Amplifier 2 inverting input |
| 핀 7 | OUT2 — Amplifier 2 output |
| 핀 8 | OUT3 — Amplifier 3 output |
| 핀 9 | IN3- — Amplifier 3 inverting input |
| 핀 10 | IN3+ — Amplifier 3 non-inverting input |
| 핀 11 | V- — Ground or negative supply connection |
| 핀 12 | IN4+ — Amplifier 4 non-inverting input |
| 핀 13 | IN4- — Amplifier 4 inverting input |
| 핀 14 | OUT4 — Amplifier 4 output |
일반적인 애플리케이션
LM2902KVQPWR 적합 용도: 6 애플리케이션s: Industrial Sensor Signal Conditioning, Low-Frequency Active Filtering, Analog Summing and Mixing, Data Acquisition Front Ends, Power-Supply Monitoring and Control, Audio and Communication Interface Conditioning.
Industrial Sensor Signal Conditioning
The LM2902KVQPWR fits industrial sensor-conditioning channels that require four independent amplifiers in one 14-pin TSSOP package. Its 30 V supply rating supports a broader operating environment than conventional low-voltage amplifiers, while the -40°C to 125°C specification covers many factory-floor temperature ranges. The four channels can implement non-inverting and inverting gain stages, buffers, or active-filter sections. The 1.2 MHz gain-bandwidth product is appropriate for many sensor signals below the amplifier’s higher-frequency operating region. Designers should verify the input common-mode range, output swing, and bias-current effects against the sensor output before finalizing the gain network.
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Low-Frequency Active Filtering
The LM2902KVQPWR is suitable for low-frequency active-filter and equalization stages built around four general-purpose operational amplifiers. Its 1.2 MHz gain-bandwidth product provides useful bandwidth for audio-band and control-signal networks, while four circuits allow cascaded sections or multiple filters to be consolidated into one 14-pin TSSOP package. Stable filter design still depends on the selected noise gain, component tolerances, and output loading. Check the manufacturer stability recommendations when driving capacitive loads and evaluate temperature drift for precision filters.
추천
Analog Summing and Mixing
A multi-channel analog summing or mixing system can use the LM2902KVQPWR to combine several low-frequency signals through resistor networks and amplifier feedback. Because the device contains four amplifiers, a compact implementation can include multiple summing stages or reserve channels for buffering and output conditioning. Its general-purpose architecture and 30 V rating are useful in control and instrumentation environments. The design must keep each input within the common-mode range and account for input bias current, resistor-generated noise, output-current limits, and the amplifier’s output-voltage swing.
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Data Acquisition Front Ends
The LM2902KVQPWR can provide buffering and gain conditioning ahead of slower data-acquisition converters when signal bandwidth is compatible with a 1.2 MHz class amplifier. Four channels help reduce board area in multi-sensor systems by handling differential inputs, level conditioning, and auxiliary buffering. Use the common-mode and output-swing limits to establish whether the source signal requires attenuation or translation. For higher-precision measurement systems, verify input offset, bias current, noise, and drift directly from the manufacturer electrical-characteristics tables.
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Power-Supply Monitoring and Control
The LM2902KVQPWR is appropriate for auxiliary monitoring and control functions in higher-voltage industrial systems because its device rating reaches 30 V. Its four amplifiers can compare filtered supply signals, generate control references, or support threshold logic around comparator stages. This use assumes the monitored node remains inside the amplifier’s common-mode and absolute-maximum limits. Keep high-current switching paths separated from feedback traces, and ensure any divider or filtering network keeps node voltages within the operating region at startup and during transients.
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Audio and Communication Interface Conditioning
The LM2902KVQPWR can condition low-frequency audio or communications interface signals when a general-purpose four-channel amplifier is sufficient. Each channel may support impedance buffering, gain adjustment, level shifting, or an active-filter section, while the 30 V rating provides design headroom for industrial interface circuits. The 1.2 MHz gain-bandwidth product is suitable for many voice-band and control-band tasks but is not intended as a high-performance wideband audio solution. Validate distortion, output swing, noise, and capacitive-load stability for the selected feedback topology.
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추천 제품 요약
엔지니어링 참조 데이터: LM2902KVQPWR — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | LM2902PWRG4 | LM2902PWR | LM2902PW | LM2902QPWRQ1 | LM2902KAVQPWRQ1 |
|---|---|---|---|---|---|---|
| Package | 14-pin TSSOP (PW) | 14-pin TSSOP (PW) | 14-pin TSSOP (PW) | 14-pin TSSOP (PW) | 14-pin TSSOP (PW) | 14-pin TSSOP (PW) |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Number of Amplifiers | 4 circuits | 4 channels | 4 channels | 4 channels | 4 channels | 4 channels |
| Product Type | Quad general-purpose operational amplifier | Quad operational amplifier | Quad operational amplifier | Quad operational amplifier | Quad operational amplifier | Quad operational amplifier |
| Mounting Type | Surface mount | Surface mount | Surface mount | Surface mount | Surface mount | Surface mount |
주요 차별점
- Improved ESD protection in the KV ordering option (vs LM2902PWRG4)
- Extended industrial temperature operation (vs LM2902PWR)
- Four channels in a compact 14-pin TSSOP package (vs LM2902QPWRQ1)
설계 노트
Route the LM2902KVQPWR supply and ground connections with short, low-impedance paths, and place the recommended decoupling capacitor close to the relevant package pins. The 14-pin TSSOP footprint has a 0.65 mm lead pitch, so conservative solder-paste volume, adequate pad spacing, and careful inspection help prevent bridging. Assign every amplifier input and output from the manufacturer pin-description table before routing sensitive signals.
Do not treat the 30 V device rating as a recommended operating rail. Verify the absolute maximum and recommended supply ranges, input common-mode range, differential input voltage, and output swing in the Texas Instruments LM2902KV datasheet. The four channels share supply pins but are otherwise independent, and incorrect grounding or an input outside the common-mode range can cause saturation even when the output load is light.
Keep the four amplifier channels physically separated where possible and avoid routing inputs beside or beneath switching-power nodes. Short feedback traces reduce parasitic feedback and make the 1.2 MHz bandwidth easier to control. For sensitive sensor or audio signals, use a quiet ground reference, remove unnecessary copper beneath high-impedance inputs, and test each channel independently to identify channel-specific instability or grounding problems.
Check output stability with the intended load, especially if long PCB traces, cables, or capacitive loads are connected. Use the manufacturer's recommended feedback values and load conditions rather than assuming every LM2902-family variant has identical drive characteristics. Confirm settling time and distortion at the signal bandwidth of interest; the 1.2 MHz gain-bandwidth figure is a small-signal characteristic and does not by itself specify large-signal accuracy.
규정 준수 정보
The retrieved manufacturer and distributor records do not state RoHS, REACH, lead-free, halogen-free, or conflict-minerals status. The standard LM2902KVQPWR ordering code is not identified as a Q1 automotive-qualified variant; use LM2902QPWRQ1 or LM2902KAVQPWRQ1 for automotive-qualified alternatives.
