LT1114IN - 4-Channel Precision Op Amp | Analog Devices
料号： LT1114IN ✓ 量产中LT1114IN 概述
An operational amplifier is an active analog circuit element used to amplify voltage differences between its differential inputs. The LT1114IN belongs to the precision amplifier hierarchy: precision op amp, operational amplifier, analog signal-conditioning IC, and power-management semiconductor. Its four channels allow compact implementations of filtering, buffering, instrumentation, and active gain stages without requiring four separate single-channel packages.
The key performance characteristics include a 750 kHz gain-bandwidth product, 0.3 V/µs slew rate, 60 µV maximum offset voltage for prime grades, 0.5 µV/°C maximum input-bias drift, and low-power operation. These specifications make the LT1114IN suitable for transducers, sensor interfaces, analog measurement systems, and general-purpose signal paths where offset stability and low input current are important.
The LT1114IN uses a bipolar precision operational-amplifier architecture. The 14-DIP (0.300 inch, 7.62 mm) package provides through-hole lead spacing for conventional PCB assembly, prototypes, and repair work. Because each amplifier has its own differential input and output pins, the package supports four independent analog channels while retaining a straightforward DIP footprint.
Typical uses include low-frequency instrumentation, current-loop and voltage-signal conditioning, buffered sensor interfaces, active filters, sample-and-hold stages, and industrial control modules. The 750 kHz bandwidth is suitable for moderate-speed signal conditioning rather than high-frequency video or RF amplification.
Designers should verify supply voltage, output swing, input common-mode range, noise, and stability requirements against the manufacturer datasheet for the exact grade. Decoupling capacitors should be placed close to the supply pins, and unused amplifier channels should be configured according to the manufacturer’s recommended practice rather than left floating.
This product page combines the official Analog Devices product information, package and performance details, sourcing guidance, drop-in alternatives, and practical design notes. It helps engineers compare the LT1114IN with pin-compatible options while planning temperature-grade, package, and lifecycle requirements.
直接替换替代料： LT1114IN ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
LT1114CN
✅ 直接替换📋 参考替代料（不在目录中）
LT1114IN 最大额定值与电气特性
| Number of Circuits | 4 circuits |
| Amplifier Type | General-purpose precision operational amplifier |
| Gain-Bandwidth Product | 750 kHz |
| Slew Rate | 0.3 V/µs |
| Prime-Grade Maximum Offset Voltage | 60 µV |
| Low-Cost-Grade Maximum Offset Voltage | 75 µV |
| Maximum Input Bias Current Drift | 0.5 µV/°C |
| 封装 | 14-DIP (0.300 inch, 7.62 mm) |
| 安装类型 | Through-hole |
| Temperature Grade | Industrial grade |
| AEC-Q100 Qualification | not_applicable |
LT1114IN 14-dip (0.300 inch, 7.62 mm) 引脚配置指南
LT1114IN（14-dip (0.300 inch, 7.62 mm) 封装）的引脚配置。 该模拟元件具有输入、输出和电源引脚。请参阅制造商数据手册以了解失调调零、补偿和使能引脚配置。适用于信号调理和放大器电路。
暂无详细引脚数据： LT1114IN.
请参阅 数据手册 以查看完整引脚配置。
典型应用
LT1114IN 适用于 6 应用s: Precision Sensor Signal Conditioning, Industrial Process Measurement, Active Filtering and Equalization, Low-Power Instrumentation, Data Acquisition Front End, Audio and Communication Buffering.
Precision Sensor Signal Conditioning
The LT1114IN fits precision sensor interfaces where small input currents and low offset voltage are important. Its picoamp-input family characteristic supports high-impedance sources, while the prime-grade maximum offset voltage of 60 µV limits input-referred error. Use one channel for buffering and additional channels for gain or filtering stages. The 750 kHz gain-bandwidth product is suitable for moderate-bandwidth sensors, while the 0.3 V/µs slew rate supports small, well-defined output steps without requiring a high-speed op amp.
推荐
Industrial Process Measurement
The LT1114IN is appropriate for industrial process-measurement circuits that combine low-frequency sensor signals with multiple conditioning channels. Its industrial-grade designation, 60 µV prime-grade maximum offset voltage, and 0.5 µV/°C maximum input-bias-current drift help preserve measurement stability across temperature changes. Four channels can handle related inputs or implement gain, summing, and active-filter stages. Verify supply limits and common-mode range in the manufacturer datasheet, particularly when operating from a split supply.
推荐
Active Filtering and Equalization
The LT1114IN can implement active low-pass filters, buffers, and equalization stages when the signal bandwidth is well below the 750 kHz gain-bandwidth product. Its four independent channels allow several filter sections to be assembled in one package, reducing board area compared with four single amplifiers. The 0.3 V/µs slew rate helps preserve large-signal behavior, but component tolerances and noise must be considered in precision filters. Confirm stability with the selected noise gain and output-loading conditions.
推荐
Low-Power Instrumentation
The LT1114IN is useful in compact instrumentation designed around low-power precision analog signal paths. Four channels support multiplexed or parallel conditioning functions without requiring separate packages, and the low-power picoamp-input family is appropriate for high-impedance transducers. The 750 kHz bandwidth is more than adequate for many slow measurement channels, while 60 µV prime-grade offset helps preserve accuracy. Confirm total quiescent current from the datasheet and budget thermal rise for the chosen through-hole layout.
推荐
Data Acquisition Front End
The LT1114IN can condition several inputs ahead of an ADC in a compact data-acquisition module. Picoamp input bias behavior is valuable when driving high-impedance sources, and the 60 µV prime-grade offset specification reduces DC measurement error. Four channels can be assigned to transducer inputs, reference buffering, or channel multiplexing. The 750 kHz bandwidth should be compared with the ADC acquisition bandwidth and acquisition time; the amplifier must also satisfy the ADC’s input-range and settling requirements.
推荐
Audio and Communication Buffering
The LT1114IN can serve as a general-purpose buffer in low-frequency audio or communication interfaces where picoamp input bias and low offset are useful. Its 0.3 V/µs slew rate and 750 kHz gain-bandwidth product cover many control, monitoring, and baseband conditioning paths. The device is not positioned as a high-speed RF or video amplifier, so engineers should verify noise density, output swing, capacitive-load stability, and channel-to-channel behavior against the manufacturer datasheet.
推荐
推荐产品汇总
工程参考数据： LT1114IN ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | LT1114CN |
|---|---|---|
| Package | 14-DIP (0.300 inch, 7.62 mm) | 14-DIP (0.300 inch, 7.62 mm) |
| Brand | Analog Devices | Analog Devices |
| Number of Circuits | 4 circuits | 4 circuits |
| Amplifier Type | General-purpose precision operational amplifier | Precision operational amplifier |
| Gain-Bandwidth Product | 750 kHz | 750 kHz |
| Slew Rate | 0.3 V/µs | 0.3 V/µs |
| Temperature Grade | Industrial grade | Commercial, 0°C to 70°C |
| Pin Compatibility | 14-DIP LT1114 family pinout | 14-DIP LT1114 family pinout |
| Mounting Type | Through-hole | Through-hole |
关键差异点
- Industrial-grade temperature positioning （对比 LT1114CN)
- Four precision channels in one through-hole package （对比 LT1114CN)
- Precision offset capability （对比 LT1114CN)
设计说明
Route the LT1114IN power and ground connections directly to the device pins and place the supply-bypass capacitors close to those pins. For the four-channel DIP, keep sensitive input traces away from clock, switching-regulator, and high-current output paths. Use a solid ground plane and minimize resistance in the analog return path to reduce offset and noise pickup.
Do not treat every LT1114 package and temperature suffix as interchangeable without checking the pinout and operating range. LT1114CN uses the same 14-DIP family format but is identified with a 0°C to 70°C commercial range, whereas LT1114IN carries the industrial-grade designation. Review supply limits, common-mode range, output swing, offset grade, and exact order-code documentation before substitution.
Verify closed-loop stability with the intended noise gain, source impedance, output loading, and cable capacitance. The 750 kHz gain-bandwidth product and 0.3 V/µs slew rate are suitable for moderate-bandwidth precision conditioning, but they do not guarantee stability in every configuration. For fast edges or long interconnects, use short traces, appropriate termination, and a confirmed output-load limit from the manufacturer datasheet.
合规信息
The available product information does not explicitly state RoHS, REACH, lead-free, halogen-free, or conflict-minerals status for the exact LT1114IN order code. Verify these declarations with Analog Devices before procurement.
