LT1014CN - 4-Channel 5V-44V Precision Op Amp | Texas Instruments
部品番号: LT1014CN ✓ 生産中LT1014CN 概要
An operational amplifier is an analog integrated circuit that uses high open-loop gain to amplify the difference between two input voltages. When negative feedback is applied, the closed-loop circuit determines the gain and bandwidth. The LT1014 belongs to the precision operational-amplifier hierarchy, where low offset voltage, low temperature drift, low noise, and low supply current are important for preserving the integrity of small sensor signals. Four amplifiers are integrated into one 14-pin DIP, reducing board area compared with four separate single or dual packages.
The LT1014CN provides an input offset voltage of 300 µV maximum at 25 °C and an input offset voltage temperature coefficient of 2.5 µV/°C maximum for the LT1014 family. Its 1 MHz gain-bandwidth product and 0.4 V/µs slew rate support general-purpose precision signal conditioning. Its low-power architecture and 5 V single-supply compatibility are useful when supply energy is constrained. The common-mode input range extends to ground, allowing the device to process signals close to the lower supply rail.
The LT1014 uses an industry-standard 14-pin quad operational-amplifier configuration, with four complete amplifier sections and a no-connect position on pin 8. This arrangement supports straightforward printed-circuit-board layout in the familiar PDIP footprint. The device can be used without external compensation in ordinary closed-loop configurations, although gain, noise, output swing, load capability, and stability should be evaluated for each application. Its precision characteristics are more useful than a general-purpose amplifier when sensor outputs are small and drift matters over time.
Typical applications include bridge-based strain and pressure measurement, thermocouple signal conditioning, precision current-loop receivers, low-level active filters, multiple-threshold detection, and battery-operated instrumentation. The four independent channels can process several related signals in one package, such as four transducer outputs or a mixed set of amplification, filtering, and comparison functions. The LT1014CN is also useful when both positive and negative supplies are available, because it can operate at dual ±15 V while retaining precision operation.
Designers should verify input and output voltage limits, load current, common-mode range, noise, and stability against the worst-case supply voltage and temperature. Input and output decoupling should be placed close to the relevant supply pins, and unused amplifier sections should be configured according to the manufacturer recommendations rather than left floating. Because the package is a PDIP rather than a surface-mount package, it also requires adequate spacing for through-hole assembly and appropriate lead-bend clearance.
This product record combines verified manufacturer and distributor information, same-footprint alternatives, pricing status, and practical selection guidance. It highlights the LT1014CN's 5 V to 44 V supply range, four precision channels, 1 MHz bandwidth, 300 µV offset limit, and 14-pin PDIP footprint to support faster engineering selection than a distributor listing alone.
ドロップイン代替品: LT1014CN — 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。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: LT1014CN （同一形状・フットプリント） — 相違点: Number of Channels, Amplifier Type, Mounting Type, Input Offset Voltage, Operating Temperature Range.
LT1014ACN
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
LT1014ADN
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
LT1014DN
✅ ドロップイン価格はお問い合わせください
データシートを見る →LT1014DIN
✅ ドロップイン📋 参考代替品（カタログ未掲載）
MC1458D
✅ ドロップイン価格はお問い合わせください
データシートを見る →LT1014CN 最大定格＆電気的特性
| Amplifier Type | Precision operational amplifier |
| Number of Channels | 4 channels |
| Total Supply Voltage Range | 5 V to 44 V |
| Single-Supply Operation | 5 V |
| Dual-Supply Operation | ±15 V |
| Gain-Bandwidth Product | 1 MHz |
| Slew Rate | 0.4 V/µs |
| Input Offset Voltage | 300 µV maximum at 25 °C |
| Input Offset Voltage Temperature Coefficient | 2.5 µV/°C maximum |
| Common-Mode Input Voltage Range | Includes ground |
| Output Voltage Swing | Includes ground while sinking current |
| 動作温度範囲 | 0 °C to 70 °C |
| パッケージ | 14-pin PDIP (N) |
| ピン数 | 14 pins |
| 実装タイプ | Through-hole |
LT1014CN ピン構成
| ピン 1 | OUT A — Amplifier A output |
| ピン 2 | IN A- — Amplifier A inverting input |
| ピン 3 | IN A+ — Amplifier A non-inverting input |
| ピン 4 | V- — Negative supply connection |
| ピン 5 | IN B+ — Amplifier B non-inverting input |
| ピン 6 | IN B- — Amplifier B inverting input |
| ピン 7 | OUT B — Amplifier B output |
| ピン 8 | NC — Not connected |
| ピン 9 | OUT C — Amplifier C output |
| ピン 10 | IN C- — Amplifier C inverting input |
| ピン 11 | IN C+ — Amplifier C non-inverting input |
| ピン 12 | V+ — Positive supply connection |
| ピン 13 | IN D+ — Amplifier D non-inverting input |
| ピン 14 | IN D- — Amplifier D inverting input |
主な用途
LT1014CN の用途: 6 件s: Battery-Powered Precision Instrumentation, Strain-Gauge Signal Conditioning, Thermouple Amplifier, 4 mA to 20 mA Current-Loop Receiver, Active Precision Filter, Threshold Detection and Limit Monitoring.
Battery-Powered Precision Instrumentation
The LT1014CN fits battery-powered measurement equipment because it combines a 5 V single-supply capability with low supply current, high open-loop gain, low noise, and low offset drift. Its common-mode input range includes ground, allowing signals close to the supply return to be amplified without requiring a bipolar input arrangement. Four precision channels in one 14-pin PDIP also reduce the component count in portable instruments. The primary benefit is measurement stability: the specified 300 µV maximum input offset at 25 °C and 2.5 µV/°C maximum drift are more useful than general-purpose amplifier figures when the battery-powered sensor produces a small differential signal. Designers should still confirm the actual supply current and noise density before calculating battery life.
おすすめ
Strain-Gauge Signal Conditioning
The LT1014CN is suitable for strain-gauge front ends where the useful bridge differential signal is small and offset drift can compromise the measurement. Its 300 µV maximum input offset at 25 °C helps preserve resolution, while the 1 MHz gain-bandwidth product provides more bandwidth than many precision instrumentation amplifiers require. The four channels can support bridge excitation buffering, amplifier stages, and filtering functions within one package. The common-mode input range including ground is particularly useful when the bridge output is referenced close to the lower rail in a single-supply system. Input bias current, input common-mode limits at the actual bridge excitation voltage, and resistor-generated noise should be checked before finalizing the gain and compensation network.
おすすめ
Thermouple Amplifier
The LT1014CN can amplify thermocouple signals when low offset and thermal stability are more important than very high bandwidth. The specified 300 µV maximum offset at 25 °C and 2.5 µV/°C maximum drift help limit errors in the microvolt-to-millivolt range produced by many thermocouples, while the 0.4 V/µs slew rate is adequate for typical temperature-loop and measurement update rates. The common-mode input range includes ground, which supports low-side sensing arrangements. Designers should use a cold-junction compensation approach, account for input bias current, and keep input wiring short to reduce thermoelectric errors. The four channels also allow one package to handle several temperature inputs when those channels share suitable grounding and compensation requirements.
おすすめ
4 mA to 20 mA Current-Loop Receiver
The LT1014CN fits precision current-loop receivers because the input common-mode voltage range includes ground and the device operates from a single 5 V supply. These characteristics simplify the interface to sensors that generate a 4 mA to 20 mA current signal when the shunt resistor is referenced to the lower supply rail. The 300 µV maximum offset at 25 °C and 2.5 µV/°C maximum drift help maintain accuracy as the received current is converted into voltage. Four amplifier sections can implement a receiver, filter, buffer, or auxiliary threshold function. The design must confirm the maximum common-mode voltage at the actual loop supply, verify output swing at the selected shunt value, and assess input bias current because it produces voltage error across the shunt.
おすすめ
Active Precision Filter
The LT1014CN can implement active filters and multiple gain blocks where low offset reduces output error near the signal floor. Its 1 MHz gain-bandwidth product gives useful closed-loop bandwidth for low-frequency measurement, instrumentation, and audio-adjacent precision applications, while the 0.4 V/µs slew rate supports the output transitions normally required by moderate-bandwidth filters. Four amplifier sections allow cascading stages without requiring separate dual packages. Component tolerances and the op amp's finite gain-bandwidth product determine the actual filter response, so simulation should include both rather than treating the ideal transfer function as exact. The device's low-power operation and 5 V single-supply support also make it suitable for compact, battery-operated filter modules.
おすすめ
Threshold Detection and Limit Monitoring
The LT1014CN is appropriate for threshold detection and multiple-limit monitoring because four amplifier channels are integrated into a single 14-pin package. The low input offset helps reduce ambiguity when comparing a slowly changing sensor signal with a reference, while the common-mode range including ground supports thresholds near the lower supply rail. Each channel can implement a comparator-like function with feedback or an open-loop detector, subject to the output-swing and stability requirements of the selected topology. The 5 V single-supply option simplifies portable monitoring equipment. Engineers should check output saturation levels, input over-range behavior, noise around the threshold, and whether the measured signal requires true comparator rail-to-rail performance; the LT1014 is an amplifier rather than a dedicated comparator.
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: LT1014CN — 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 | LT1014ACN | LT1014ADN | LT1014DN | LT1014DIN | MC1458D |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 14-PDIP (N) | 14-PDIP (N) | 14-PDIP (N) | 14-PDIP (N) | 14-PDIP (N) | 14-PDIP (N) |
| Number of Amplifiers | 4 | 4 | 4 | 4 | 4 | 4 |
主な差別化要因
- Four precision amplifiers in one 14-pin PDIP （vs MC1458D)
- Single 5 V and dual ±15 V operation （vs LT1014DIN)
- Precision offset specification （vs MC1458D)
- Broad supply headroom （vs LT1014DN)
設計ノート
Place input and output decoupling capacitors close to the supply pins and keep sensitive inverting-input traces short. Because the LT1014CN is a precision amplifier, input bias current and resistor noise can create meaningful error at high source impedances. Use a low-value feedback resistor only when required by bias-current or bandwidth calculations, and keep the non-inverting input path away from switching nodes and high-current return paths.
Evaluate the complete signal path at both single 5 V and dual ±15 V operation because the common-mode range includes ground but the usable output range is not rail-to-rail. Confirm that sensor inputs remain inside the common-mode limits at the lowest supply voltage and that the required output does not saturate under the worst-case load. Add supply-bypass capacitance near the device and avoid long high-impedance supply connections.
Do not use the LT1014CN as an unrestricted comparator without checking output saturation, overdrive recovery, and stability around the threshold. The device is a low-power operational amplifier, not a rail-to-rail comparator, and its intended linear operation assumes suitable negative feedback. For unused amplifier channels, follow the manufacturer's recommended termination configuration instead of allowing floating inputs.
Before replacing LT1014CN with LT1014ACN, LT1014ADN, LT1014DN, LT1014DIN, or MC1458D, compare exact offset voltage, drift, input bias current, noise, common-mode range, output swing, supply current, and temperature grade. Although all candidates are associated with the 14-pin industry-standard configuration, a footprint match alone does not guarantee equivalent measurement accuracy or regulatory suitability.
コンプライアンス情報
The supplied manufacturer and distributor excerpts do not state RoHS, REACH, lead-free, halogen-free, or conflict-minerals status. AEC-Q100 is not applicable because the LT1014CN is a general-purpose commercial-temperature operational amplifier rather than an automotive-qualified device.
