MCP6242-E/P - Dual 550kHz Rail-to-Rail Op Amp | Microchip
料号： MCP6242-E/P ✓ 量产中MCP6242-E/P 概述
An operational amplifier, or op amp, is a high-gain differential amplifier used to amplify, buffer, filter, compare, or control analog signals. The MCP6242 belongs to the operational amplifier hierarchy of analog ICs and combines low supply current, wide bandwidth, and rail-to-rail signal handling in a low-power package suitable for portable, industrial, instrumentation, and control applications.
The main electrical strengths include a typical 550 kHz gain-bandwidth product, 68-degree typical phase margin, 50 µA typical quiescent current, and rail-to-rail input and output operation. Its low operating voltage permits direct use in 1.8 V, 2.5 V, 3.3 V, and 5 V systems. Input common-mode rejection of at least 60 dB and typical input offset voltage of 5 mV support accurate amplification around the supply rails.
The MCP6242 family is intended for general-purpose applications where moderate bandwidth and low quiescent current are more important than very high slew rate or very low offset voltage. Each amplifier can operate as an inverting or non-inverting gain stage, voltage follower, comparator, active-filter element, or transducer interface. Rail-to-rail input reduces the need for artificial biasing in single-supply sensing, while rail-to-rail output improves dynamic range when the required output swing approaches a supply rail.
Typical uses include portable sensor interfaces, battery-powered measurement systems, industrial control modules, audio preamplifiers, and low-voltage data-acquisition circuits. The 8-pin PDIP package also facilitates prototyping and hand assembly. Designers should still account for input bias current, offset error, capacitive-load stability, output-current capability, and noise when defining the gain and feedback network.
For a stable single-supply design, bypass the supply pins with local ceramic capacitance and keep feedback components close to the amplifier inputs and outputs. Avoid operating large capacitive loads directly at the output unless the output-stage stability limits are checked. This page combines manufacturer specifications, package details, application guidance, and pin-compatible family options for faster engineering selection.
The MCP6242-E/P designation identifies the extended-temperature, PDIP-version member of the MCP6242 family. It is appropriate when a through-hole package is preferred for manual assembly, prototypes, repair, or applications where leaded mounting simplifies inspection. For production designs that prioritize PCB area, surface-mount variants should be reviewed separately, while the electrical design must remain compatible with the selected package variant.
直接替换替代料： MCP6242-E/P ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： MCP6242-E/P （相同外形与封装尺寸） ——差异在于 Package, Gain-Bandwidth Product, Mounting Type, Amplifier Type, Number of Channels.
MCP6241-E/P
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
MCP6244-E/P
✅ 直接替换 ⚠️ 规格未核验联系询价
查看数据手册 →MCP6232-E/P
✅ 直接替换📋 参考替代料（不在目录中）
MCP6242-E/P 最大额定值与电气特性
| Number of Channels | 2 channels |
| Amplifier Type | General-purpose operational amplifier |
| Gain-Bandwidth Product | 550 kHz typical |
| 静态电流 | 50 µA typical |
| Supply Voltage Range | 1.8 V to 5.5 V |
| Input Type | Rail-to-rail |
| 输出类型 | Rail-to-rail |
| Phase Margin | 68° typical |
| Common-Mode Rejection Ratio | 60 dB minimum |
| Input Offset Voltage | 5 mV typical |
| 工作温度范围 | To +125°C |
| 封装 | 8-pin PDIP, 0.300 inch (7.62 mm) pitch |
| 安装类型 | Through-hole |
| Product Status | Active |
MCP6242-E/P 引脚配置
| 引脚 1 | OUTA — Amplifier A output |
| 引脚 2 | INA- — Inverting input for amplifier A |
| 引脚 3 | INA+ — Non-inverting input for amplifier A |
| 引脚 4 | V- — Negative supply or ground connection |
| 引脚 5 | INB+ — Non-inverting input for amplifier B |
| 引脚 6 | INB- — Inverting input for amplifier B |
| 引脚 7 | OUTB — Amplifier B output |
| 引脚 8 | V+ — Positive supply connection |
典型应用
MCP6242-E/P 适用于 6 应用s: Portable Sensor Signal Conditioning, Industrial Data Acquisition, Audio Preamplifier, Low-Power Voltage Monitoring, Active Filtering and Conditioning, Battery-Powered Control System.
Portable Sensor Signal Conditioning
The MCP6242-E/P is well matched to battery-powered sensor interfaces because it operates from 1.8 V to 5.5 V and consumes 50 µA typical quiescent current. Place one channel in a non-inverting configuration around a sensor bridge or resistive divider, and use the second channel to amplify a reference or temperature signal. Rail-to-rail input operation accommodates signals that move close to either supply rail, while the 550 kHz typical gain-bandwidth product supports moderate-frequency filtering. Check sensor impedance and output-swing limits, and keep the bypass capacitor close to pins 4 and 8.
推荐
Industrial Data Acquisition
The MCP6242-E/P can condition low-level inputs in 3.3 V or 5 V industrial acquisition modules while keeping board space modest. A dual package provides separate paths for a measurement channel and an excitation or reference channel, reducing the number of amplifier packages required. Its 60 dB minimum common-mode rejection and 5 mV typical input offset voltage support moderate-accuracy measurements. The 550 kHz typical bandwidth is suitable for signals well below that frequency, but the design should account for sensor-ground offsets, 60 Hz interference, input bias current, and the limits of 16-bit conversion.
推荐
Audio Preamplifier
The MCP6242-E/P can amplify microphone, line-level, or headphone-buffer signals in compact audio modules because both channels support rail-to-rail output operation. One channel may provide fixed-gain preamplification while the other drives a coupling network or implements active filtering. The 550 kHz typical gain-bandwidth product is ample for many audio-frequency paths, though the 68° typical phase margin and output-capacitance limit must be checked for stability. Set the gain through feedback resistors rather than relying on excessive input overdrive, and verify output swing against the chosen load.
推荐
Low-Power Voltage Monitoring
The MCP6242-E/P supports threshold detection and rail monitoring in low-power systems using one channel as a comparator-like amplifier and the other as an output buffer or reference amplifier. Operation down to 1.8 V permits monitoring of low-energy rails, while the 50 µA typical quiescent current limits continuous overhead. Rail-to-rail inputs are useful when the monitored voltage approaches a supply rail. Designers should include hysteresis to prevent oscillation, account for the 5 mV typical offset, and ensure the monitored signal does not exceed the amplifier's absolute maximum ratings.
推荐
Active Filtering and Conditioning
The dual MCP6242-E/P can implement first-order or modest higher-order active filters where the signal bandwidth remains well below the 550 kHz typical gain-bandwidth product. One channel may perform anti-alias filtering while the second provides gain or buffering to a converter. Its low 50 µA typical quiescent current is useful in portable test equipment, while rail-to-rail input and output behavior improves single-supply headroom. Confirm loop gain, phase margin, component tolerances, noise, and the maximum capacitive load before finalizing the filter response.
推荐
Battery-Powered Control System
The MCP6242-E/P is suitable for closed-loop control blocks in portable or energy-conscious equipment because it combines dual channels, a 1.8 V minimum supply, and 50 µA typical quiescent current. One channel can amplify a feedback or sensor signal, and the other can drive a control input or buffer a reference. Rail-to-rail operation simplifies signal ranges around low-voltage rails. The design must maintain sufficient phase margin for the intended feedback network, verify output-current capability for the load, and include supply bypassing close to the device.
推荐
推荐产品汇总
工程参考数据： MCP6242-E/P ——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 | MCP6241-E/P | MCP6244-E/P | MCP6232-E/P | TLV2402ID | LM2904P3 |
|---|---|---|---|---|---|---|
| Package | 8-pin PDIP | 8-pin PDIP | 8-pin PDIP | 8-pin PDIP | 8-pin PDIP | 8-pin PDIP |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Texas Instruments | Texas Instruments |
关键差异点
- Combines dual-channel operation with low quiescent current （对比 MCP6241-E/P)
- Provides a higher-bandwidth family option （对比 MCP6232-E/P)
- Uses rail-to-rail signal handling in a dual PDIP package （对比 LM2904P3)
设计说明
Place the supply bypass capacitor immediately adjacent to pins 4 and 8, with a short return path to the device ground reference. Keep the two channels' feedback resistors and compensation networks close to their corresponding inputs to minimize parasitic capacitance and coupling. Because this is a leaded PDIP package, route the pins to provide adequate spacing between the inputs and output, particularly when the amplifier drives a capacitive load or switches a fast sensor signal.
Do not assume that rail-to-rail input and output operation eliminates the need for operating-margin checks. The input must remain within its rated common-mode range, and the output must remain within the output-swing limits for the selected supply and load. For comparator-like use, add positive feedback or hysteresis to prevent output chatter. Also avoid allowing an unused amplifier channel to amplify noise by connecting it to a stable input reference.
Use a gain that keeps the closed-loop bandwidth below the 550 kHz typical gain-bandwidth product with adequate margin. The 68° typical phase margin provides a useful starting point, but actual stability also depends on feedback topology, source impedance, output loading, and PCB parasitics. If driving a cable, ADC input, or capacitive load, isolate the amplifier with a series resistor and confirm the response with a scope or network analyzer.
合规信息
The manufacturer product page identifies MCP6242 as an active product, but the available material does not explicitly establish RoHS, REACH, lead-free, halogen-free, conflict-minerals, or automotive qualification status.
