TLV2444CD - Quad Rail-to-Rail CMOS Op Amp | Texas Instruments
부품 번호: TLV2444CD ✓ 활성TLV2444CD 개요
An operational amplifier is a voltage-gain amplifier used to amplify, buffer, filter, compare, or reshape analog signals. The TLV2444 belongs to the linear-amplifier hierarchy, combining low-voltage CMOS operation with rail-to-rail output capability. Its wide input-voltage range makes it useful when signals approach the available supply voltage, while the four amplifiers in one package can support several signal paths in compact equipment.
Key features include four amplifier circuits, rail-to-rail output swing, an extended common-mode input range, low-noise operation, and no output phase inversion. A single-supply configuration requires at least 4.25 V. The CMOS design is intended for portable instrumentation, industrial control, data acquisition, and portable equipment where low-voltage analog signals must be conditioned without relying on a dual supply.
The LinCMOS architecture positions the TLV2444 between conventional CMOS and bipolar operational amplifiers. Rail-to-rail output allows the output voltage to approach the positive and negative supply limits under suitable load conditions. The extended common-mode range is particularly valuable in battery-powered designs because sensor outputs can occupy much of the available signal range. Four amplifiers in one 14-pin SOIC also reduce board area compared with separate single or dual amplifier packages.
Typical applications include sensor signal conditioning, portable measurement equipment, battery-powered data acquisition, industrial interface circuits, low-voltage comparators, and active filtering. Each amplifier can be configured for inverting, non-inverting, voltage-follower, or feedback-based filtering operation, provided the designer observes the input, output, and common-mode limits from the manufacturer data sheet.
Design attention should focus on input bias current, output load capability, noise, bandwidth, stability with capacitive loads, and the selected feedback network. Because the exact electrical limits are product-specific, use the pin-description table and characteristic curves in the manufacturer data sheet when assigning input and output pins or sizing external resistors and capacitors.
This product page organizes the TLV2444CD family information, exact package attributes, technical specifications, sourcing workflow, and engineering considerations for faster design review. It also distinguishes the available manufacturer alternatives from cross-brand parts and highlights where PCB-level verification remains essential before substituting any amplifier.
드롭인 대체품: TLV2444CD — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
TLV2444CDR
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
TLV2444CDG4
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
TLV2444AID
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
TLV2444IP
✅ 드롭인 ⚠️ 사양 미검증📋 참조 대체품 (카탈로그에 없음)
TLV2444AIP
✅ 드롭인 ⚠️ 사양 미검증📋 참조 대체품 (카탈로그에 없음)
TLV2444CD 최대 정격 & 전기적 특성
| Amplifier Type | Quad operational amplifier |
| Number of Amplifier Circuits | 4 circuits |
| Technology | Advanced LinCMOS |
| Output Swing | Rail-to-rail |
| Common-Mode Input Range | Extended wide-input-voltage range |
| Minimum Single-Supply Voltage | 4.25 V |
| Supply Configuration | Single or dual supply |
| Output Phase Inversion | No phase inversion |
| Noise Characteristic | Low noise |
| Package Type | 14-pin SOIC (D) |
| Package Pin Count | 14 pins |
| 동작 온도 범위 | 0 °C to 70 °C |
| 실장 유형 | Surface mount |
| 출력 수 | 4 outputs |
| Number of Inputs | 4 differential inputs |
TLV2444CD 14 pins 핀 구성 가이드
TLV2444CD(14 pins 패키지)의 핀 구성입니다. 이 아날로그 부품에는 입력, 출력, 전원 공급 핀이 있습니다. 오프셋 널, 보상, 인에이블 핀 구성은 제조사 데이터시트를 참조하십시오. 신호 컨디셔닝 및 증폭기 회로에 이상적입니다.
다음에 대한 상세 핀아웃 데이터 없음: TLV2444CD.
다음을 참조하십시오: 데이터시트 전체 핀 구성은 다음을 참조하십시오.
일반적인 애플리케이션
TLV2444CD 적합 용도: 6 애플리케이션s: Portable Sensor Signal Conditioning, Battery-Powered Data Acquisition, Industrial Control Interfaces, Low-Voltage Active Filters, Precision Measurement Instrumentation, Threshold and Control Signal Generation.
Portable Sensor Signal Conditioning
The TLV2444CD fits low-voltage sensor interfaces because it combines four amplifiers, rail-to-rail output swing, and an extended common-mode input range in a single 14-pin SOIC. It can provide buffering, inversion, level shifting, and gain stages for sensor outputs that operate close to the limits of a 5 V rail. A 5 V single-supply configuration is supported with a minimum stated supply of 4.25 V. This arrangement reduces the number of packages needed around a sensor interface while preserving usable signal headroom. Verify the individual sensor output range against the amplifier common-mode limits, and check offset, noise, input bias current, and bandwidth in the manufacturer electrical-characteristic tables before finalizing the gain network.
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Battery-Powered Data Acquisition
The TLV2444CD is appropriate for compact battery-powered acquisition systems that require several analog channels but have limited board area. Four rail-to-rail-output amplifiers can condition sensor, current-sense, or diagnostic signals using a 5 V single supply. The extended common-mode input range is valuable when signals occupy much of the available supply span. Packaging the four amplifier circuits into one 14-pin SOIC reduces component count and simplifies routing compared with four separate packages. The primary engineering checks are supply-current demand, input bias error, closed-loop bandwidth for the intended gain, output load capability, and the response of each feedback network. Use the manufacturer data sheet to set output swing expectations under resistive and capacitive loading.
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Industrial Control Interfaces
The quad TLV2444CD can support industrial interface tasks that require low-voltage signal conditioning close to a 5 V control rail. Rail-to-rail output helps represent control signals across much of the available output range, while the extended common-mode input range can accommodate sensor and feedback voltages near the supply limits. The four amplifier circuits can implement buffering, error amplification, active filtering, or thresholding functions in a compact package. Industrial designs should still verify noise, offset, stability, and output-drive requirements at the intended temperature and supply conditions. Keep high-current outputs and switching nodes physically separated from sensitive amplifier inputs, and use the pin-description table in the manufacturer documentation when assigning amplifier channels.
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Low-Voltage Active Filters
The TLV2444CD can implement low-voltage active-filter stages where four amplifier sections are needed within one board footprint. Its rail-to-rail output and extended common-mode input range are useful when filter signals approach the operating supply limits. A 5 V single-supply system may use the amplifiers to process signals centered around a mid-supply reference, with passive networks defining gain and frequency response. Filter performance depends on the exact gain-bandwidth, output-swing, noise, and stability characteristics, so each stage must be checked against the manufacturer data sheet. Confirm component tolerances, loading, and expected signal amplitude at the lowest supply voltage, and ensure that the selected feedback configuration remains stable with the parasitic capacitance introduced by the PCB.
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Precision Measurement Instrumentation
The TLV2444CD is suitable for measurement instrumentation that conditions several low-level signals while operating from a compact supply. The four channels provide flexibility for differential amplifiers, inverters, followers, and gain stages, while rail-to-rail output helps preserve signal swing. The device is also identified as a low-noise CMOS operational amplifier, making its noise performance relevant to small-signal measurements. Before selecting it, engineers should compare the documented input offset voltage, input bias current, noise density, open-loop gain, and bandwidth against the measurement error budget. A 5 V single-supply implementation also requires attention to common-mode headroom and output swing. Grounding and return-current layout should be planned so that amplifier error is not amplified by shared supply or ground impedance.
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Threshold and Control Signal Generation
The TLV2444CD can be configured as a comparator-like threshold element or as the active element in control-signal generation, provided its input and output limits are suitable for the circuit. Its extended common-mode input range and output swing that includes both supply rails help support logic-level interfaces around a 5 V rail. Four amplifier sections allow independent comparisons, conditioned control outputs, or small feedback-control loops. Because the TLV2444CD is a linear operational amplifier rather than a dedicated comparator, propagation delay, overload recovery, and output behavior outside the linear region must be evaluated in the manufacturer data sheet. Use it for linear thresholding and control functions only after confirming those timing and saturation characteristics satisfy the system requirements.
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추천 제품 요약
엔지니어링 참조 데이터: TLV2444CD — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | TLV2444CDR | TLV2444CDG4 | TLV2444AID | TLV2444IP | TLV2444AIP |
|---|---|---|---|---|---|---|
| Package | 14-pin SOIC (D) | 14-pin SOIC (D) | 14-pin SOIC (D) | 14-pin SOIC (D) | 14-pin SOIC (D) | 14-pin SOIC (D) |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Amplifier Count | 4 circuits | 4 circuits | 4 circuits | 4 circuits | 4 circuits | 4 circuits |
주요 차별점
- Combines four amplifier channels with near-rail output capability in one 14-pin SOIC (vs TLV2402ID)
- Supports a 5 V single-supply configuration with rail-to-rail output (vs TLV2444AID)
- Uses an extended common-mode input range for low-voltage signal chains (vs TLV2444AIP)
설계 노트
Place the amplifier input, feedback, and decoupling connections so that high-current outputs and switching-node copper do not share return paths with sensitive inputs. The 14-pin SOIC footprint permits short feedback loops, but each of the four amplifier sections should be assigned before routing. Use the manufacturer pin-description table and package drawing to confirm amplifier A, B, C, and D pin locations, supply pins, and no-connect positions rather than relying on the pin arrangement of a dual amplifier.
Design the supply rail so it remains above the stated 4.25 V minimum for 5 V single-supply operation and account for rail-to-rail output headroom at the actual load. Place a local bypass capacitor close to the device supply pins and keep its return path compact. Because the TLV2444CD is a linear CMOS amplifier, its supply current and heat dissipation should be checked against the regulator's operating limit rather than its nominal output capability.
Do not assume that the TLV2444CD can saturate and recover like a dedicated comparator. Verify output phase, overload behavior, propagation delay, and stable operation in the intended feedback configuration using the manufacturer characteristics. Also confirm that sensor signals remain within the extended common-mode range and that the selected gain does not exceed the amplifier's documented bandwidth. These checks are especially important in threshold circuits and low-frequency active filters.
규정 준수 정보
The verified product information identifies a commercial 0 °C to 70 °C TLV2444CD configuration but does not provide RoHS, REACH, lead-free, halogen-free, or conflict-minerals declarations. AEC-Q100 status is not applicable to the listed non-automotive commercial ordering code.