LT1058CJ - Quad 14V/us JFET Op Amp | Analog Devices
部品番号: LT1058CJ ✓ 生産中LT1058CJ 概要
A JFET-input operational amplifier is a voltage-amplifier IC whose input stage uses junction field-effect transistors. This input architecture provides very low bias current, high input impedance, and effective operation with high-impedance sensors. Within the amplifier hierarchy, the LT1058CJ belongs to the precision operational-amplifier family and ultimately to the broader analog signal-processing and semiconductor categories.
Key characteristics include 14 V/us minimum slew rate, 10 V/us minimum slew rate in one operating specification, a 5 MHz minimum gain-bandwidth product, and a fast settling specification of 0.02%. The LT1058 version has a maximum offset voltage of 600 uV. Input bias current is specified at 7 pA, supporting high-impedance sources whose leakage currents could otherwise create significant input-voltage errors.
The four-amplifier configuration reduces the number of packages required for multi-channel analog systems. Four amplifiers in one 14-pin ceramic dual-inline package simplify board layout while supporting per-channel configuration as filters, buffers, gain stages, or instrumentation amplifiers. The precision JFET input stage makes the device especially useful where source impedance, bias-current error, and signal fidelity are more important than minimum cost or smallest area.
Typical applications include low-level sensor signal conditioning, laboratory instrumentation, audio preamplification, active filtering, data-acquisition front ends, and precision current-voltage conversion. In a sensor interface, the amplifier can provide high input impedance without drawing significant current from the sensor. In an instrumentation chain, its low bias current helps preserve the integrity of small signals while its 14 V/us slew rate supports faster waveform transitions.
Design with the input common-mode range, output swing, supply voltage, and stability requirements in mind. Ceramic decoupling should be placed close to the supply pins, and unused amplifier channels should be configured according to the manufacturer’s recommended stable topology. The ceramic package provides a temperature grade suitable for demanding industrial and military applications, subject to the complete ordering information.
This page combines the LT1058CJ’s principal electrical and packaging characteristics with application guidance, engineering notes, and cross-reference analysis. It focuses on design-relevant distinctions such as input bias current, slew rate, gain-bandwidth product, channel count, and the practical limitations of replacement packages.
ドロップイン代替品: LT1058CJ — 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。
この製品に利用可能なドロップイン代替品はありません。
代替品をリクエストLT1058CJ 最大定格＆電気的特性
| Amplifier Type | Precision JFET-input operational amplifier |
| Number of Circuits | 4 circuits |
| パッケージ | 14-pin CERDIP, 0.300 in (7.62 mm) pitch |
| 実装スタイル | Through-hole |
| Slew Rate | 14 V/us |
| Minimum Slew Rate | 10 V/us |
| Gain-Bandwidth Product | 5 MHz minimum |
| Fast Settling Time | 0.02% settling specification |
| Offset Voltage | 600 uV maximum |
| Input Bias Current | 7 pA |
| 電源電圧 | +/-20 V |
| Input Stage | JFET |
| ピン数 | 14 pins |
| Lead Spacing | 0.300 in (7.62 mm) |
LT1058CJ 14-pin cerdip, 0.300 in (7.62 mm) pitch ピン配置ガイド
LT1058CJ (14-pin cerdip, 0.300 in (7.62 mm) pitch パッケージ) のピン配置。 このアナログコンポーネントは、入力、出力、および電源ピンを備えています。オフセットナル、補償、イネーブルピンの設定については、メーカーのデータシートを参照してください。信号調整やアンプ回路に最適です。
詳細なピン配置データはありません: LT1058CJ.
詳細は データシート をご参照ください。
主な用途
LT1058CJ の用途: 6 件s: High-Impedance Sensor Signal Conditioning, Precision Data-Acquisition Front End, Audio Preamplification, Laboratory Instrumentation, Precision Current-to-Voltage Conversion, Industrial Control and Analog Filtering.
High-Impedance Sensor Signal Conditioning
The LT1058CJ fits sensor interfaces whose source resistance makes amplifier input current a significant error source. Its JFET input stage is specified at 7 pA input bias current, helping preserve the voltage represented by a weak sensor signal. Four amplifiers can handle several stages of the same measurement chain, including buffering, gain, filtering, and output conditioning. The 14 V/us slew rate supports faster signal transitions, while the 5 MHz minimum gain-bandwidth product is useful for moderate-bandwidth precision systems. Confirm the sensor leakage, source impedance, common-mode voltage, and settling requirements before choosing the amplifier gain.
おすすめ
Precision Data-Acquisition Front End
The LT1058CJ can condition multiple low-level channels ahead of an ADC, where low input current and precision offset behavior are valuable. Its four-amplifier count reduces the number of packages required for a multi-channel front end, while the 14 V/us slew rate helps preserve large-signal transitions. Engineers can implement differential excitation, gain, active filtering, and driver functions around the quad device. The design should verify the ADC input range, acquisition time, noise requirements, and the LT1058CJ output-swing limits before assigning the gain and bandwidth.
おすすめ
Audio Preamplification
The LT1058CJ is suitable for precision preamplifier and active-filter stages that benefit from JFET input behavior. The specified 7 pA input bias current is especially helpful with high-impedance source networks, while the 14 V/us slew rate provides greater headroom for fast signal edges than many precision JFET amplifiers. Each of the four amplifiers can support a separate gain or filtering path in professional audio equipment. Validate noise density, harmonic distortion, output drive, and channel-to-channel behavior against the system specification because the primary published characteristics emphasize speed and precision rather than audio-specific noise ratings.
おすすめ
Laboratory Instrumentation
The LT1058CJ fits laboratory buffer, amplifier, and filter circuits requiring four precision channels in one package. Its JFET input stage minimizes loading from high-impedance probes and dividers, and its 14 V/us slew rate supports measurement signals that change quickly. Quad integration simplifies instrumentation front panels where multiple analog functions would otherwise require separate devices. The ceramic DIP package also matches legacy laboratory and industrial equipment layouts. Before insertion, confirm the operating-temperature grade, power requirements, offset calibration needs, and whether the instrument requires a specific amplifier family for compatibility.
おすすめ
Precision Current-to-Voltage Conversion
The LT1058CJ can form a transimpedance or current-to-voltage conversion stage when the measured source produces very small currents. A 7 pA input bias current limits the DC error introduced by the amplifier input stage, which is especially important when the sensor current is close to that magnitude. The four channels permit parallel conversion, differential support, or auxiliary filtering and output amplification. Keep input-node capacitance low, use guarded routing where appropriate, and verify the complete current range, resistor tolerance, output compliance, and bandwidth against the target measurement accuracy.
おすすめ
Industrial Control and Analog Filtering
The LT1058CJ can implement active filters, buffers, error amplifiers, and signal-conditioning blocks in industrial control electronics. Four independent JFET-input amplifiers provide a compact way to handle several low-frequency control or measurement channels. The 5 MHz gain-bandwidth product and 14 V/us slew rate offer useful bandwidth and transient-response margin, but they do not replace the stability analysis required for a particular filter topology. Check the control-loop phase margin, filter tolerances, supply transients, and temperature range before using the device in a closed-loop system.
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: LT1058CJ — 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 |
|---|---|
| Amplifier Type | Quad precision JFET-input operational amplifier |
| Number of Circuits | 4 circuits |
| Package | 14-pin CERDIP, 0.300 in (7.62 mm) pitch |
| Brand | Analog Devices |
| Slew Rate | 14 V/us |
| Gain-Bandwidth Product | 5 MHz minimum |
| Input Bias Current | 7 pA |
| Maximum Offset Voltage | 600 uV |
| Supply Voltage | +/-20 V |
主な差別化要因
- Four amplifiers in one ceramic DIP package （vs LT1058CN)
- Low-input-current JFET signal conditioning （vs LT1058CN)
- Precision and transient-response combination （vs LT1058CN)
設計ノート
Place supply-bypass capacitors directly between the positive and negative supply pins and the nearest ground return. Because the package contains four amplifiers, local decoupling limits shared-supply disturbance between channels. Route the input pins as short and guarded as practical, particularly when they connect to high-impedance sources; leakage from board contamination can create errors comparable to the 7 pA input bias current. Keep analog signal paths away from switching power nodes and high-current return paths.
Do not assume that a functional quad amplifier with the same pin functions is a mechanical drop-in replacement. The LT1058CN has the same general amplifier arrangement and characteristics, but its PDIP construction differs from the LT1058CJ CERDIP package. Confirm the package drawing, lead spacing, temperature grade, and soldering process before substitution. For unused amplifier sections, use the manufacturer’s stable configuration rather than allowing an open input to float.
Treat the JFET input stage as a high-impedance node. Keep PCB contamination, flux residue, moisture, and nearby leakage-producing paths away from the input pins. When driving long cables or using capacitive sensors, add protection that does not introduce excessive junction capacitance, and evaluate possible input-transistor protection diodes. The 5 MHz gain-bandwidth product must also be compared with the required closed-loop bandwidth and stability margin.
コンプライアンス情報
The LT1058CJ is a commercial-grade JFET-input operational amplifier in a ceramic DIP package. RoHS, REACH, lead-free, halogen-free, and conflict-minerals status were not established from the available product information.
