LT1079CN - Quad Micropower Precision Op Amp | Analog Devices
料号： LT1079CN ✓ 量产中LT1079CN 概述
An operational amplifier is an analog signal-conditioning IC that amplifies the voltage difference between its inverting and non-inverting inputs. A precision operational amplifier adds low offset, low bias current, and controlled gain behavior, while a micropower implementation limits supply consumption for battery-powered and low-power systems. Within the broader hierarchy, the LT1079 is a four-channel amplifier within the precision operational-amplifier and analog signal-conditioning IC categories.
The LT1079's four independent amplifiers make it suitable for compact analog designs requiring several signal-conditioning stages. Its 200 kHz gain-bandwidth product supports low-frequency precision amplification, and its 0.07 V/µs slew rate provides a defined large-signal response. The low 6 nA input bias current reduces bias-current errors in high-impedance source interfaces, while single-supply operation simplifies circuits powered from a 5 V rail.
The manufacturer describes the LT1079 as a micropower, single-supply precision amplifier suitable for precision filtering, instrumentation, and micropower sample-and-hold circuits. Because the verified product information identifies the operating voltage range as 2.3 V to 12 V, designers can use the device across common low-voltage supply systems. The quad configuration reduces the number of packages required when four gain stages, buffers, or active-filter sections are needed.
Typical uses include low-power sensor interfaces, precision active filters, battery-powered measurement systems, audio and communication signal conditioning, and general-purpose 5 V analog circuits. In a sample-and-hold application, the amplifier can buffer the input and support the active input stage. In filters, its four channels can implement multiple buffered stages while maintaining a common supply architecture.
Design with the 14-pin PDIP footprint and verify the complete pin assignment against the manufacturer datasheet before layout. Input common-mode range, output swing, offset voltage, supply current, noise, and stability recommendations are not included in the supplied verified excerpts, so they must be confirmed before committing a design to production.
This page consolidates verified manufacturer and distributor information, package details, parameter constraints, and application guidance. It also distinguishes confirmed drop-in family options from parameters that still require datasheet verification, providing a practical starting point for sourcing and engineering evaluation.
直接替换替代料： LT1079CN ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
LT1079CN#PBF
✅ 直接替换📋 参考替代料（不在目录中）
LT1079ACN#PBF
✅ 直接替换📋 参考替代料（不在目录中）
LT1079BN#PBF
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
LT1079DN#PBF
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
LT1079CN 最大额定值与电气特性
| Amplifier Type | Quad precision operational amplifier |
| Number of Channels | 4 channels |
| Supply Voltage Range | 2.3 V to 12 V |
| Optimized Supply Voltage | 5 V |
| Gain-Bandwidth Product | 200 kHz |
| Slew Rate | 0.07 V/µs |
| Input Bias Current | 6 nA |
| Power Class | Micropower |
| Supply Type | Single supply |
| 封装 | 14-pin PDIP |
| 安装类型 | Through-hole |
| Product Classification | Standard general-purpose amplifier |
| Application | Micropower sample-and-hold and micropower filters |
| RoHS 状态 | No RoHS version available |
LT1079CN 14-pin pdip 引脚配置指南
LT1079CN（14-pin pdip 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： LT1079CN.
请参阅 数据手册 以查看完整引脚配置。
典型应用
LT1079CN 适用于 6 应用s: Micropower Sample-and-Hold Circuit, Low-Power Active Filters, Battery-Powered Sensor Interface, 5 V Instrumentation Signal Conditioning, Precision Buffer and Level-Shifter, Low-Power Audio and Communication Conditioning.
Micropower Sample-and-Hold Circuit
The LT1079CN is suitable for micropower sample-and-hold designs because it combines four precision amplifiers, 6 nA input bias current, and a 200 kHz gain-bandwidth product in one 14-pin PDIP package. According to the verified Analog Devices product information, the LT1079 family is optimized for micropower sample-and-hold applications. A typical circuit can use one channel to buffer the incoming signal, another as the gain or feedback element, and additional channels to support control and output stages. The 2.3 V to 12 V supply range also permits operation from a 5 V rail, which simplifies power budgeting in portable equipment. Before finalizing the circuit, verify the complete common-mode range, output swing, settling behavior, and sample-hold capacitance limits from the manufacturer datasheet.
推荐
Low-Power Active Filters
The LT1079CN fits precision active-filter designs that require several buffered stages without allocating a separate amplifier package to every section. Its four channels, 200 kHz gain-bandwidth product, and 0.07 V/µs slew rate provide defined operating characteristics for low-frequency filtering, while the low 6 nA input bias current helps limit interaction with high-impedance filter networks. The verified Analog Devices description specifically identifies micropower filters as an application for the LT1079 family. Operation from 2.3 V to 12 V, with optimization at 5 V, supports compact low-voltage systems. Component values and stability should be calculated against the exact gain, noise, and compensation characteristics in the complete manufacturer datasheet.
推荐
Battery-Powered Sensor Interface
The LT1079CN is appropriate for low-power sensor interfaces where amplifier bias current and supply consumption are important. The verified 6 nA input bias current reduces the error introduced when the amplifier is connected to a high-impedance sensor source, while the micropower architecture and single-supply operation support compact battery-powered equipment. Four amplifiers allow a signal conditioner to combine gain, filtering, buffering, and output drive without using four separate packages. Its 200 kHz gain-bandwidth product is sufficient for many slow sensor signals rather than high-speed waveform work. The designer should confirm input offset, input voltage range, quiescent current, and output-swing limits against the manufacturer datasheet before defining the sensor accuracy budget.
推荐
5 V Instrumentation Signal Conditioning
The LT1079CN supports compact 5 V instrumentation signal conditioning because Analog Devices explicitly optimizes the LT1079 for single-supply operation at 5 V. Four channels can implement differential amplification, filtering, level conditioning, and output buffering while maintaining one supply architecture. The 200 kHz gain-bandwidth product and 0.07 V/µs slew rate provide useful performance for low-frequency measurement channels, and the 6 nA input bias current is favorable for high-impedance sources. In practice, the amplifier must remain within its verified common-mode range and output-swing limits at every operating point. Offset voltage, noise, stability, and supply-current data were absent from the supplied excerpts and should be obtained from the official datasheet before release.
推荐
Precision Buffer and Level-Shifter
The LT1079CN can implement buffered level shifting or impedance isolation between low-voltage sensor nodes and downstream circuitry because it supports 2.3 V to 12 V single-supply operation and provides four amplifier channels. The low 6 nA bias current is particularly useful when the source impedance is high, while the 200 kHz gain-bandwidth product allows the same device to provide moderate closed-loop bandwidth. A practical implementation should reserve channels for input buffering, gain, and output isolation, while accounting for the input common-mode range and output swing around the selected supply. Verify those voltage limits, along with offset and stability behavior, in the full LT1079 datasheet because they were not included in the verified search excerpts.
推荐
Low-Power Audio and Communication Conditioning
The LT1079CN can condition low-bandwidth audio or communication signals in compact, low-voltage equipment that operates from a single 5 V rail. Its four channels allow multiple gain or buffering paths, while the 0.07 V/µs slew rate and 200 kHz gain-bandwidth product cover many control, microphone, and low-frequency signal-conditioning tasks. The low 6 nA input bias current can also reduce loading in high-impedance source arrangements. Designers should avoid treating these figures as guarantees for high-fidelity audio or RF signal paths without checking noise, distortion, common-mode range, and output swing in the complete manufacturer documentation. The verified evidence supports low-frequency micropower conditioning more directly than wideband or precision-audio performance.
推荐
推荐产品汇总
工程参考数据： LT1079CN ——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 | LT1079CN#PBF | LT1079ACN#PBF | LT1079BN#PBF | LT1079DN#PBF |
|---|---|---|---|---|---|
| Package | 14-pin PDIP | 14-pin PDIP - same | 14-pin PDIP - same | 14-pin PDIP - same | 14-pin PDIP - same |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Power Class | Micropower | Micropower | Micropower | Micropower | Micropower |
关键差异点
- Four precision amplifiers in one through-hole package （对比 MC1458D)
- Lower verified input bias current （对比 LM324D)
- Micropower single-supply operation （对比 LM324D)
- Direct lead-free family option （对比 LT1079CN)
设计说明
Do not substitute the LT1079 ordering suffixes without checking grade-specific limits. The verified data confirms LT1079CN#PBF and LT1079ACN#PBF share the 14-PDIP format, but the A grade may have different accuracy or temperature characteristics. Confirm the complete pinout, offset voltage, common-mode range, output swing, supply current, and operating temperature from the manufacturer datasheet for the exact suffix before using it as a drop-in replacement.
The verified excerpts do not provide per-amplifier supply current, so the LT1079CN power budget must not be estimated from the word micropower alone. Obtain the quiescent-current maximum from the full datasheet and multiply it by four channels plus the external bias load. The device supports a 2.3 V to 12 V range and is optimized for 5 V, but the usable input and output range can be narrower than the supply range.
Place each unused amplifier in a configuration that prevents oscillation and avoids unused-output saturation, following the manufacturer's recommended unused-amplifier configuration. Keep input and feedback paths short because the verified 200 kHz gain-bandwidth product is intended primarily for low-frequency precision applications. The verified material does not include a complete pinout, so PCB routing must be based on the official 14-pin PDIP diagram rather than assumptions about channel assignments.
Use the 0.07 V/µs slew rate and 200 kHz gain-bandwidth product to assess whether the required signal bandwidth and settling behavior fit the amplifier. High-impedance sources benefit from the verified 6 nA input bias current, but the source impedance must still be included in the total offset and noise error calculation. Confirm input offset, noise, common-mode range, and output swing from the full datasheet before setting a precision error budget.
合规信息
The verified LT1079CN versus LT1079ACN#PBF comparison states that no RoHS version is available. Reach, halogen-free, conflict-minerals, and exact lead-free status for the unqualified LT1079CN were not provided. The separately listed LT1079CN#PBF ordering option uses a lead-free designation, but its material-compliance declarations were not supplied.