TLV2444ID - Quad Rail-to-Rail CMOS Op Amp | Texas Instruments
部品番号: TLV2444ID ✓ 生産中TLV2444ID 概要
An operational amplifier is an analog signal-processing IC that amplifies the voltage difference between its differential inputs. The operational-amplifier category includes voltage-feedback and current-feedback devices, while the TLV2444ID is a voltage-feedback, CMOS quad amplifier. Four amplifiers in one package reduce board area and simplify designs requiring multiple low-voltage signal stages, buffers, or gain channels.
Key features of the TLV2444ID include rail-to-rail output operation, a wide common-mode input voltage range, CMOS construction, and four amplifiers per package. Rail-to-rail output swing allows the output voltage to approach the supply rails, maximizing usable signal range in low-voltage systems. The wide input range is particularly useful when sensor outputs, divided signals, or bias voltages occupy much of the available supply voltage.
The Advanced LinCMOS architecture supports low-voltage operation while maintaining low bias current and low-noise behavior. Because the amplifiers do not phase invert, they can be used in conventional inverting and non-inverting signal paths. A single package can implement filters, instrumentation amplifiers, sensor amplifiers, level-shifting stages, or analog signal-conditioning blocks while preserving consistent device characteristics across all four channels.
Typical applications include portable instrumentation, battery-powered sensor interfaces, industrial control systems, audio and communication signal conditioning, data-acquisition front ends, and low-voltage analog processing. The 14-pin SOIC package supports conventional surface-mount assembly and provides a practical upgrade from discrete single or dual amplifier implementations when four independent channels are required.
When designing around the TLV2444ID, verify the input common-mode range, output swing, supply current, stability requirements, and input-capacitance limits against the intended operating conditions. Decoupling capacitors should be placed close to the supply pins, and sensitive analog traces should be kept away from switching nodes and high-current return paths.
This product page combines the manufacturer product information with practical guidance for package selection, pinout use, application fitting, design trade-offs, and verified drop-in alternatives. It is intended to help engineers determine whether the TLV2444ID's four-channel CMOS architecture and 14-pin SOIC footprint align with a new analog-front-end design or an existing board revision.
ドロップイン代替品: TLV2444ID — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
TLV2444AID
✅ ドロップイン📋 参考代替品（カタログ未掲載）
TLV2444CDG4
✅ ドロップイン📋 参考代替品（カタログ未掲載）
TLV2444CDR
✅ ドロップイン📋 参考代替品（カタログ未掲載）
TLV2444AIP
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
TLV2444AIPWR
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
TLV2444ID 最大定格＆電気的特性
| Amplifier Type | Quad voltage-feedback operational amplifier |
| Number of Channels | 4 circuits |
| Process Technology | Advanced LinCMOS |
| Output Swing | Rail-to-rail |
| Common-Mode Input | Wide input voltage range |
| Minimum Input Voltage at 5 V Single Supply | 4.25 V |
| Input Phase Inversion | No phase inversion |
| Low-Voltage Operation | Low-voltage operational amplifier |
| Noise Characteristics | Low noise |
| Supply Configuration | Single or dual supply |
| 動作温度範囲 | -40°C to 125°C |
| パッケージ | 14-pin SOIC (D) |
| ピン数 | 14 pins |
| 実装タイプ | Surface mount |
| Product Type | CMOS instrumentation operational amplifier |
TLV2444ID ピン構成
| ピン 1 | 1OUT — Output of amplifier 1 |
| ピン 2 | 1IN- — Inverting input of amplifier 1 |
| ピン 3 | 1IN+ — Non-inverting input of amplifier 1 |
| ピン 4 | V+ — Positive supply connection |
| ピン 5 | 2IN+ — Non-inverting input of amplifier 2 |
| ピン 6 | 2IN- — Inverting input of amplifier 2 |
| ピン 7 | 2OUT — Output of amplifier 2 |
| ピン 8 | 3OUT — Output of amplifier 3 |
| ピン 9 | 3IN- — Inverting input of amplifier 3 |
| ピン 10 | 3IN+ — Non-inverting input of amplifier 3 |
| ピン 11 | V- — Negative supply connection |
| ピン 12 | 4IN+ — Non-inverting input of amplifier 4 |
| ピン 13 | 4IN- — Inverting input of amplifier 4 |
| ピン 14 | 4OUT — Output of amplifier 4 |
主な用途
TLV2444ID の用途: 6 件s: Low-Voltage Sensor Signal Conditioning, Portable Instrumentation, Industrial Control and Monitoring, Communications Interface Conditioning, Audio and Low-Level Analog Amplification, Data-Acquisition Front End.
Low-Voltage Sensor Signal Conditioning
The TLV2444ID fits four-channel sensor conditioning because each amplifier provides a wide-input common-mode range, rail-to-rail output, and low-noise CMOS operation in a 14-pin SOIC. Engineers can use the channels to buffer resistive sensors, amplify small differential outputs, and establish gain close to the sensing element. Its rail-to-rail output helps use more of a low-voltage supply range, while the wide input capability supports sensors whose operating span moves across the rail. Four integrated channels also reduce the number of separate amplifier packages and keep local analog routing compact. Before committing, verify the exact common-mode limits, input offset, noise density, output swing, and settling behavior for the selected operating point.
おすすめ
Portable Instrumentation
The TLV2444ID is useful in portable measurement equipment where four buffered analog inputs must operate from a restricted supply. Its low-voltage Advanced LinCMOS design supports compact, battery-oriented signal paths, while rail-to-rail output increases the available measurement span compared with a fixed non-rail-to-rail amplifier. The quad arrangement can support sensor inputs, excitation buffers, level conditioning, and output driving without requiring four separate packages. For a portable design, confirm whether the required bandwidth and settling time suit the measurement rate, and review supply-current behavior across the intended battery range. Proper grounding and short analog traces remain important because low-power systems can also experience ground-noise and reference-offset limitations.
おすすめ
Industrial Control and Monitoring
The TLV2444ID supports industrial control and monitoring designs that require several low-level analog channels in a compact package. The four amplifiers can condition current, voltage, temperature, and position-sensor interfaces, with the wide common-mode input range improving compatibility with signals that occupy a substantial portion of the supply. The -40°C to 125°C operating range makes the device relevant to equipment exposed to temperature variation. Its 14-pin SOIC format simplifies PCB assembly and provides a straightforward alternative to multiple discrete amplifier packages. In control systems, pair the amplifier with suitable protection, filtering, and isolation components, then validate offset, noise, stability, and output drive against the worst-case sensor and fault conditions.
おすすめ
Communications Interface Conditioning
The TLV2444ID can provide local amplification and buffering for low-level communication interfaces when the signal remains within its low-voltage operating limits. Its four channels can condition receive signals, level-shift logic thresholds, or implement gain and filtering stages around a communications controller. Wide input capability is valuable when the interface voltage is close to the amplifier supply, while rail-to-rail output provides flexible logic-level alignment. The CMOS architecture also supports low-voltage portable equipment designs. Verify bandwidth, slew rate, settling time, output loading, and channel-to-channel behavior against the interface standard, because generic amplifier-family descriptions do not guarantee compliance with a particular protocol or data rate.
おすすめ
Audio and Low-Level Analog Amplification
The TLV2444ID is applicable to low-voltage audio and general analog amplification blocks that need several channels without a large package count. Rail-to-rail output can improve signal swing in compact audio circuits, and the low-noise designation makes the device a candidate for microphone, headphone-buffer, and line-level conditioning stages. The four amplifiers can also implement filters, cross-coupled circuits, or small-signal gain blocks. Because audio performance depends on the complete signal path, evaluate noise over the intended frequency range, output distortion at the required level, input impedance, and stability with the selected feedback network. Add output coupling or gain control as required by the audio topology rather than assuming the amplifier can drive a load directly.
おすすめ
Data-Acquisition Front End
The TLV2444ID can form the analog front end of a multiplexed data-acquisition system by providing differential gain, buffering, and active filtering ahead of an ADC. The wide common-mode input range allows direct connection to many sensor outputs, while rail-to-rail output helps use the available converter input span. Its four channels can serve simultaneous inputs, gain stages, or reference-buffer functions in a compact 14-pin SOIC footprint. The main design consideration is ensuring that offset, noise, bandwidth, and settling time are adequate for the selected ADC resolution and sample rate. Place the amplifier close to the converter, use a quiet ground strategy, and keep high-speed digital and switching-node currents away from the input and feedback traces.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: TLV2444ID — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | TLV2444AID | TLV2444CDG4 | TLV2444CDR |
|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 14-pin SOIC (D) | 14-pin SOIC | 14-pin SOIC | 14-pin SOIC |
| Amplifier Count | 4 circuits | 4 circuits | 4 circuits | 4 circuits |
主な差別化要因
- Four amplifiers share one compact 14-pin SOIC package （vs TLV2444AID)
- Rail-to-rail output supports low-voltage signal-span optimization （vs TLV2444CDG4)
- Wide common-mode input range suits low-level sensor interfaces （vs TLV2444CDR)
設計ノート
Place the supply-decoupling capacitor immediately across the positive and negative supply pins, with the shortest possible ground return. A small ceramic capacitor handles high-frequency transients, while a larger local capacitor supports lower-frequency supply movement. For single-supply operation, connect the negative supply pin to ground as specified by the manufacturer. Confirm the absolute supply limits, common-mode range, and output-swing limits in the datasheet before selecting capacitor voltage ratings.
Route each amplifier's input and feedback paths close to the device and avoid sharing sensitive input traces with output or supply-return paths. Keep the four channels physically separated where one channel carries high-level signals and another handles low-level sensing. Ground return currents from digital converters and switching regulators should not share the sensitive analog return segment. This arrangement reduces coupling from switching edges and improves the practical noise performance of the quad device.
Do not assume rail-to-rail output means the output can reach either supply rail under every load. The usable swing depends on output current, supply voltage, temperature, and the selected gain configuration. Likewise, a wide common-mode input range is not unlimited. Check input and output absolute limits, verify the signal remains inside the valid common-mode region, and include output-current margin for the connected load and feedback network.
Choose feedback resistors and compensation for the required closed-loop bandwidth rather than selecting gain independently of stability. Excessive capacitive loading on an output or excessive capacitance at an input can reduce stability. When driving an ADC, include an isolation resistor or suitable anti-alias filtering if sampling transients could feed back into the amplifier. Validate settling time with the actual source impedance, cable capacitance, and acquisition timing.
コンプライアンス情報
The manufacturer product information identifies the Advanced LinCMOS TLV2444 family and its package and temperature characteristics, but the available material does not explicitly state RoHS, REACH, lead-free, halogen-free, or conflict-minerals status. AEC-Q100 is not applicable to this unspecified-grade industrial amplifier ordering option.