MCP664-E/ST - 60MHz Quad RRO Op Amp | Microchip Technology
MPN： MCP664-E/ST ✓ 啟用中MCP664-E/ST 概覽
An operational amplifier is an analog integrated circuit that amplifies the voltage difference between its differential inputs. Operational amplifiers belong to the broader amplifier IC and analog signal-processing hierarchy, where they are used for voltage buffering, gain control, filtering, instrumentation, and active feedback. The MCP664 combines four amplifiers in one package, allowing multiple signal chains to share a common supply while reducing board area compared with four individual single-channel devices.
The MCP664-E/ST provides a typical 60 MHz gain-bandwidth product, a 32 V/µs slew rate, and 90 mA typical short-circuit current. Its supply voltage range is 2.5 V to 5.5 V, supporting both 3.3 V and 5 V systems. The output stage is rail-to-rail, while the listed common-mode rejection ratio reaches 79 dB. These characteristics make the amplifier appropriate for medium-frequency instrumentation, active filters, sensor interfaces, and general analog signal conditioning.
The family combines relatively high bandwidth with low input bias current of 0.005 µA. Voltage noise density is listed at 6.8 nV/√Hz at 1 MHz. For high-impedance sources, the low bias current helps limit input loading, while the 60 MHz bandwidth supports faster closed-loop operation when stability and noise requirements permit. The 14-pin TSSOP package is suitable for compact, surface-mount assemblies requiring a higher pin count than a basic SOT-23 device.
Typical applications include four-channel sensor conditioning, active analog filtering, low-current transducers, audio and communication interfaces, and general-purpose signal amplification. In these systems, the MCP664-E/ST can operate from a 3.3 V or 5 V rail, and its four channels reduce the number of packages required. The rail-to-rail output stage also provides useful output swing when operating from low-voltage supplies.
When designing around this amplifier, verify the required output swing, input common-mode range, capacitive-load stability, and noise performance under the intended gain. Decoupling capacitors should be placed close to the supply pins, and unused amplifier channels should be configured according to the manufacturer’s recommended stable topology rather than left floating.
This page combines the manufacturer product information with a focused engineering comparison, practical application guidance, pin-package considerations, and clearly identified drop-in alternatives. It is intended to help engineers select the amplifier, plan the PCB layout, and evaluate whether the MCP664-E/ST fits a specific low-voltage signal-chain design.
直接替換替代品，適用於 MCP664-E/ST — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
MCP664T-E/ST
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
MCP663-E/ST
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
MCP664-E/ST 最大額定值與電氣特性
| Operational Amplifier Type | Quad general-purpose amplifier |
| Number of Amplifier Channels | 4 circuits |
| Gain-Bandwidth Product | 60 MHz typical |
| Slew Rate | 32 V/µs typical |
| Supply Voltage Range | 2.5 V to 5.5 V |
| Input Bias Current | 0.005 µA |
| Common-Mode Rejection Ratio | 79 dB |
| Short-Circuit Current | 90 mA typical |
| Voltage Noise Density | 6.8 nV/√Hz typical at 1 MHz |
| Output Architecture | Rail-to-rail output |
| 工作溫度範圍 | -40 °C to +125 °C |
| 封裝 | 14-pin TSSOP |
| Package Width | 4.40 mm |
| 安裝類型 | Surface mount |
| RoHS 狀態 | Compliant |
| Lead-Free Status | Lead-free |
| 生命週期狀態 | Active |
MCP664-E/ST 4.40 mm 腳位配置指南
MCP664-E/ST（4.40 mm 封裝）的腳位配置。 此類比元件具有輸入、輸出與電源腳位。偏移歸零、補償與致能腳位配置請參閱製造商資料表。適用於訊號調理與放大器電路。
無詳細腳位定義資料： MCP664-E/ST.
請參閱 資料表 以查看完整腳位配置。
典型應用
MCP664-E/ST 適用於 6 應用s: Multi-Channel Sensor Conditioning, Active Audio Signal Conditioning, Precision Analog Front End, Communication Interface Conditioning, Industrial Control Signal Conditioning, Portable and Battery-Powered Electronics.
Multi-Channel Sensor Conditioning
The MCP664-E/ST fits multi-channel sensor conditioning because it combines four amplifiers in one 14-pin TSSOP package. Its 60 MHz typical gain-bandwidth product provides bandwidth for moderate-frequency sensors, while 0.005 µA input bias current helps minimize loading on high-impedance sources. The 2.5 V to 5.5 V supply range supports 3.3 V and 5 V instrumentation systems. Each channel can provide buffering, gain, or active-feedback filtering, although engineers should confirm the input common-mode range and offset performance for the selected sensor before finalizing the gain network.
推薦
Active Audio Signal Conditioning
The MCP664-E/ST can support active audio signal-conditioning paths where four channels and moderate bandwidth are useful in a compact circuit. Its 60 MHz typical gain-bandwidth product and 32 V/µs slew rate provide useful dynamic range for small-signal stages, while the rail-to-rail output supports low-voltage operation. The four channels could handle stereo left and right paths or other line-level conditioning stages. Design checks should include output swing into the intended load, channel stability with audio-typical capacitances, and the amplifier’s noise contribution relative to the signal source.
推薦
Precision Analog Front End
The MCP664-E/ST is suitable as an active front-end element in precision analog systems requiring multiple buffered channels. The 79 dB listed common-mode rejection ratio helps reject common-mode noise, and the 6.8 nV/√Hz voltage noise density at 1 MHz provides a useful starting point for sensitivity analysis. Rail-to-rail output operation can improve usable signal swing on a 3.3 V or 5 V rail. For instrumentation-amplifier or differential-driver configurations, verify the actual input range, gain accuracy, output-current capability, and stability rather than relying on bandwidth alone.
推薦
Communication Interface Conditioning
The MCP664-E/ST can condition communication-related analog signals when the design operates from 3.3 V or 5 V and needs compact quad-channel amplification. Its 60 MHz typical gain-bandwidth product and 32 V/µs slew rate support moderate-bandwidth signal shaping, while the four channels can reduce package count. The rail-to-rail output is valuable when preserving signal swing is important. Engineers should check the input common-mode range against the transmitted signal, evaluate capacitive loading at the receiver input, and ensure that the selected gain does not compromise amplifier stability near the device’s usable bandwidth.
推薦
Industrial Control Signal Conditioning
The MCP664-E/ST is appropriate for industrial control boards that need several low-voltage analog channels in a restricted footprint. The 14-pin TSSOP package provides a practical surface-mount option, and the -40 °C to +125 °C operating range supports extended industrial environments. Four channels can amplify sensor outputs, scale control feedback, or buffer inputs to converters and processors. The 2.5 V to 5.5 V supply range simplifies compatibility with 3.3 V control electronics, while the 60 MHz bandwidth allows modest closed-loop bandwidth when stability requirements are addressed.
推薦
Portable and Battery-Powered Electronics
The MCP664-E/ST can fit compact battery-powered electronics that use a regulated 3.3 V or 5 V rail. Its four channels consolidate multiple analog functions in one package, while the 2.5 V minimum supply supports systems operating below a conventional 5 V rail. Rail-to-rail output operation preserves signal swing in low-voltage designs, and the 60 MHz typical gain-bandwidth product is suitable for moderate-bandwidth sensing paths. Portable applications should still include an effective power strategy, confirm output loading, and evaluate whether the required signal bandwidth justifies a faster or lower-power amplifier.
推薦
推薦產品摘要
工程參考資料，適用於 MCP664-E/ST — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | MCP664T-E/ST | MCP663-E/ST |
|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TSSOP-14 | TSSOP-14 - same | TSSOP-14 - same |
主要差異化特點
- Four integrated amplifiers in a 14-pin TSSOP (對比MCP663-E/ST)
- Direct same-footprint family substitution path (對比MCP664T-E/ST)
- Low-voltage rail-to-rail output operation (對比MCP663-E/ST)
設計說明
Place the recommended input and output bypass capacitors close to the MCP664-E/ST supply and amplifier pins. Use the manufacturer datasheet's capacitance values and the intended output-load conditions when selecting ceramic components, because placing high-capacitance ceramics directly at an amplifier output can create stability problems. Keep the ground return short and use an uninterrupted ground plane under the TSSOP footprint where practical.
Do not assume that a 60 MHz gain-bandwidth product permits stable operation at every closed-loop gain. Check the minimum stable gain, capacitive-load limits, output-current capability, and the gain-bandwidth interaction for the selected feedback network. Also verify that the input common-mode voltage and output swing remain inside their functional limits throughout the 2.5 V to 5.5 V supply range.
For high-impedance sensor inputs, keep the sensitive input traces short, shield them from switching nodes and the output stages, and avoid unnecessary solder-residue contamination around the input pins. The listed 0.005 µA bias current is useful for source loading, but leakage through PCB contamination can still dominate at very high source impedances. Use a suitable board finish and clean the assembled PCB before conformal coating or conformal coating if appropriate.
The MCP664-E/ST has a 32 V/µs slew rate, so fast output transitions can couple into adjacent circuitry even though the device is not a switching regulator. Maintain separation from sensitive inputs, minimize output-loop area, and provide a low-impedance return path for load currents. Evaluate EMI with the actual output filter, load, cable, and connector because package placement alone cannot determine radiated or conducted noise.
合規資訊
RoHS-compliant and lead-free status are listed for the MCP664-E/ST. No AEC-Q100 qualification, REACH, halogen-free, or conflict-minerals declaration was identified.
