MCP604-I/ST - 2.8MHz Quad Rail-to-Rail Op Amp | Microchip
料号： MCP604-I/ST ✓ 量产中MCP604-I/ST 概述
An operational amplifier is a high-gain analog building block that compares an input signal with a feedback network and drives its output toward the difference between those signals. The MCP604 belongs to the CMOS operational-amplifier family within the broader voltage-amplifier and analog signal-processing hierarchy. Four amplifiers in one package reduce board area and simplify designs requiring several independent gain, filtering, or buffering channels.
The MCP604's headline characteristics are its 2.8 MHz gain-bandwidth product, 230 uA typical operating current, and single-supply operating range of 2.7 V to 5.5 V. Rail-to-rail output swing allows the amplifier to approach the available supply rails more closely than a conventional fixed-headroom output stage. Its CMOS implementation also supports low input bias current and high open-loop gain, which can simplify impedance-sensitive instrumentation and precision feedback networks.
Each of the four amplifier channels can operate independently, making the part suitable for multi-channel sensor conditioning, transducer buffering, active filtering, and low-frequency signal amplification. The 14-pin TSSOP package offers a compact surface-mount format for mixed-signal boards. Because the device is intended for low-power operation, it is especially useful when each amplifier must contribute low quiescent current while providing substantially more bandwidth than a very-low-frequency precision amplifier.
Typical uses include industrial sensor interfaces, portable measurement systems, audio and communication-signal buffers, current-sensing amplifiers, and general-purpose analog front ends. In each case, the 2.8 MHz bandwidth provides useful signal-path capability, while the 230 uA typical operating current helps preserve system power budget. The quad configuration also allows four channels to be handled without using four separate packages.
When using the MCP604-I/ST, verify input and output common-mode limits, output-current capability, noise, offset voltage, and stability requirements for the selected gain and load. Decoupling capacitors should be placed close to the supply pins. Input and feedback components should be arranged to minimize parasitic capacitance and leakage, particularly when driving higher-impedance sensors.
This product record combines manufacturer and distributor information with application guidance, package details, and procurement-oriented comparisons. It highlights verified specifications such as the 2.8 MHz gain-bandwidth product, 230 uA typical operating current, 2.7 V to 5.5 V supply range, and 14-TSSOP format, while clearly separating verified data from parameters that still require datasheet confirmation.
直接替换替代料： MCP604-I/ST ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
该产品暂无直接替换替代料。
请求替代料MCP604-I/ST 最大额定值与电气特性
| Amplifier Type | Quad CMOS operational amplifier |
| Number of Channels | 4 channels |
| Gain-Bandwidth Product | 2.8 MHz |
| Typical Operating Current | 230 uA |
| Supply Voltage Range | 2.7 V to 5.5 V |
| Output Swing | Rail-to-rail |
| 封装 | 14-pin TSSOP |
| 安装类型 | Surface mount |
MCP604-I/ST 引脚配置
| 引脚 1 | OUTA — Amplifier A output |
| 引脚 2 | IN A- — Amplifier A inverting input |
| 引脚 3 | IN A+ — Amplifier A non-inverting input |
| 引脚 4 | V- — Negative supply |
| 引脚 5 | IN B+ — Amplifier B non-inverting input |
| 引脚 6 | IN B- — Amplifier B inverting input |
| 引脚 7 | OUTB — Amplifier B output |
| 引脚 8 | OUTC — Amplifier C output |
| 引脚 9 | IN C- — Amplifier C inverting input |
| 引脚 10 | IN C+ — Amplifier C non-inverting input |
| 引脚 11 | V+ — Positive supply |
| 引脚 12 | IN D+ — Amplifier D non-inverting input |
| 引脚 13 | IN D- — Amplifier D inverting input |
| 引脚 14 | OUTD — Amplifier D output |
典型应用
MCP604-I/ST 适用于 6 应用s: Industrial Sensor Signal Conditioning, Portable Measurement Systems, Audio and Communication Buffering, Active Filtering and Gain Stages, Current Sensing and Feedback Control, Data Acquisition Front Ends.
Industrial Sensor Signal Conditioning
The MCP604-I/ST fits four-channel industrial sensor conditioning because it combines a 2.8 MHz gain-bandwidth product, rail-to-rail output swing, low input bias current, and operation from 2.7 V to 5.5 V. Its four independent amplifier sections can condition thermocouple, resistive, or low-level voltage signals without requiring four separate packages. The verified 230 uA typical operating current also helps limit the power burden of multi-channel measurement blocks. Designers should still verify the input common-mode range, offset voltage, noise, and output-current limit for the selected sensor and gain.
推荐
Portable Measurement Systems
The MCP604-I/ST is suitable for portable measurement equipment where four analog channels must be provided from a 2.7 V to 5.5 V supply without consuming excessive power. Its 230 uA typical operating current and 2.8 MHz gain-bandwidth product support low-level buffering, gain stages, and active filtering in compact instruments. The quad TSSOP integration reduces component count and board area compared with four separate amplifier packages. Battery-focused designs must account for output loading and should check the manufacturer's maximum supply-current specifications before finalizing the power budget.
推荐
Audio and Communication Buffering
The MCP604-I/ST can provide low-level audio or communication-signal buffering where rail-to-rail output swing and four channels are useful. Its 2.8 MHz gain-bandwidth product provides useful bandwidth for audio-frequency and low-speed communications signals, while the 230 uA typical operating current supports compact equipment. Four amplifiers may handle input buffering, gain stages, or active filtering in one 14-pin TSSOP. Audio and communications engineers should verify noise density, output-current capability, capacitive-load stability, and the actual signal bandwidth against the manufacturer datasheet.
推荐
Active Filtering and Gain Stages
The MCP604-I/ST is appropriate for active filter and gain-stage implementation because each of its four CMOS channels combines a 2.8 MHz gain-bandwidth product with rail-to-rail output capability. A single package can implement two second-order filter sections or several cascaded and parallel amplifier functions, reducing board space. With a 2.7 V to 5.5 V operating range, the device fits common low-voltage analog systems. Component tolerances, op-amp noise, gain-bandwidth behavior, and stability with the selected reactive network must be evaluated before production use.
推荐
Current Sensing and Feedback Control
The MCP604-I/ST can support current-sensing and feedback-control circuits where low bias current, high open-loop gain, and multiple amplifier channels are advantageous. The verified CMOS characteristics help reduce loading of high-impedance sensing nodes, while the 2.8 MHz gain-bandwidth product supports loops that do not require high speed. Its four channels can be allocated to signal conditioning, gain, filtering, and output driving. Designers must confirm input common-mode behavior around the measured current range and verify offset, drift, and output-drive requirements directly from the MCP604 documentation.
推荐
Data Acquisition Front Ends
The MCP604-I/ST is a practical fit for multi-channel data-acquisition front ends because four amplifiers can buffer, amplify, and filter inputs while operating from a 2.7 V to 5.5 V supply. The 2.8 MHz gain-bandwidth product accommodates many low- and moderate-bandwidth acquisition signals, and the 230 uA typical operating current supports compact multi-channel modules. The rail-to-rail output can improve utilization of the available supply range. Exact suitability depends on source impedance, ADC input range, sampling rate, settling behavior, noise, and input capacitance, which require datasheet verification.
推荐
推荐产品汇总
工程参考数据： MCP604-I/ST ——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 |
|---|---|
| Brand | Microchip Technology |
| Package | 14-pin TSSOP |
| Amplifier Configuration | Quad |
| Gain-Bandwidth Product | 2.8 MHz |
| Typical Operating Current | 230 uA |
| Supply Voltage Range | 2.7 V to 5.5 V |
| Output Swing | Rail-to-rail |
| Verified Unit Price | $1.1537 as of 2026-10-30 |
关键差异点
- Four integrated amplifier channels （对比 Single- or dual-channel operational amplifiers)
- Low-power 2.8 MHz operation （对比 Higher-bandwidth operational amplifiers)
- Single-supply rail-to-rail output operation （对比 Fixed-headroom amplifier outputs)
设计说明
Place the required input and output bypass capacitors close to the corresponding supply and ground pins. The MCP604 contains four amplifiers in one 14-pin TSSOP, so supply routing must serve all four channels without creating long shared current paths. Keep sensitive input and feedback traces short, route them away from switching nodes, and use a solid ground plane to reduce noise coupling between amplifier channels.
Do not assume that rail-to-rail output swing permits an output exactly at either supply rail. Confirm the datasheet's output-voltage headroom under the intended load current. Likewise, the 2.7 V to 5.5 V supply range does not guarantee that every input and output combination remains valid. Verify the input common-mode range, output limits, and external feedback network at the lowest and highest intended supply voltages.
Use short feedback paths and avoid adding excessive capacitance directly to an amplifier output. Capacitive loading can reduce stability or alter settling behavior, particularly when driving long PCB traces, cables, or ADC sample-and-hold inputs. If the source impedance is high, account for amplifier bias current and input capacitance when selecting source resistors and compensation components. Verify noise and offset against the required measurement resolution.
合规信息
The supplied manufacturer and distributor snippets do not explicitly provide RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status for MCP604-I/ST.
