MCP624-E/ST - 20MHz Quad mCal Op Amp | Microchip Technology
MPN: MCP624-E/ST ✓ فعالMCP624-E/ST نمای کلی
An operational amplifier, or op amp, is a high-gain analog building block used to amplify, buffer, filter, compare, and drive signals. The MCP624 belongs to the CMOS operational-amplifier hierarchy, where rail-to-rail input and output operation supports signals approaching the supply rails. Four independent channels in one package can simplify sensor conditioning, signal conditioning, and general analog signal-chain designs while reducing board area.
The MCP624-E/ST provides a typical 20 MHz gain-bandwidth product, 10 V/us slew rate, 13 nV/Hz typical noise at 1 MHz, and a typical short-circuit current of 70 mA. Its calibrated input offset voltage is specified at a maximum of 200 uV. The -E suffix identifies the electrical grade, while the /ST package designation corresponds to the 14-pin TSSOP package described for this device.
Microchip mCal is an important architectural feature of the MCP62x family. At power-up, the amplifiers are self-calibrated to improve offset performance. This calibration makes the family useful where DC offset can influence measurement accuracy, transducer conditioning, or closed-loop control behavior. Designers should still account for output settling and startup time when sequencing sensitive analog systems.
Typical uses include 2.5 V and 5.5 V precision signal conditioning, low-voltage sensor interfaces, active filters, instrumentation buffers, audio preamplifier stages, and four-channel acquisition front ends. The 20 MHz bandwidth provides useful speed for low-amplitude signals, while the 14 TSSOP outline supports conventional surface-mount assembly.
PCB design should provide a solid return path, short feedback loops, and careful placement of input, output, and compensation-network components. Decoupling capacitors should be connected directly to the supply pins, and unused amplifier inputs must be biased so they do not float. The 5.5 V maximum operating supply also leaves no tolerance margin above that voltage.
This product page combines the manufacturer specifications with practical considerations for decoupling, layout, calibration behavior, signal conditioning, and drop-in sourcing. It also highlights the electrical and package constraints that must be checked before replacing the MCP624-E/ST in an existing 14-pin TSSOP design.
جایگزین‌های drop-in برای MCP624-E/ST — همان پکیج، سازگار پین‌به‌پین. قطعات با پکیج متفاوت که نیاز به تغییر PCB دارند مستثنی هستند.
MCP624-I/ST
✅ جایگزین مستقیم ⚠️ مشخصات تأییدنشده📋 جایگزین مرجع (خارج از کاتالوگ)
MCP624-E/ST حداکثر مقادیر مجاز و مشخصات الکتریکی
| Amplifier Type | General Purpose |
| Number of Circuits | 4 circuits |
| Gain-Bandwidth Product | 20 MHz typical |
| Slew Rate | 10 V/us typical |
| Input Offset Voltage | ±200 uV maximum after calibration |
| Voltage Noise Density | 13 nV/Hz typical at 1 MHz |
| Short-Circuit Current | 70 mA typical |
| Input Type | Rail-to-Rail |
| نوع خروجی | Rail-to-Rail |
| Maximum Supply Voltage | 5.5 V |
| بسته‌بندی | 14-pin TSSOP, 0.173 inch / 4.40 mm width |
| نوع نصب | Surface Mount |
| Packaging | Tube |
| Calibration | mCal power-up self-calibration |
پیکربندی پین MCP624-E/ST
| پین 1 | OUTA — Amplifier A output |
| پین 2 | -INA — Amplifier A inverting input |
| پین 3 | +INA — Amplifier A non-inverting input |
| پین 4 | V- — Negative supply |
| پین 5 | +INB — Amplifier B non-inverting input |
| پین 6 | -INB — Amplifier B inverting input |
| پین 7 | OUTB — Amplifier B output |
| پین 8 | OUTC — Amplifier C output |
| پین 9 | -INC — Amplifier C inverting input |
| پین 10 | +INC — Amplifier C non-inverting input |
| پین 11 | V+ — Positive supply |
| پین 12 | +IND — Amplifier D non-inverting input |
| پین 13 | -IND — Amplifier D inverting input |
| پین 14 | OUTD — Amplifier D output |
کاربردهای معمول
MCP624-E/ST مناسب است برای 6 کاربردs: Low-Voltage Sensor Signal Conditioning, Active Filtering and Frequency Shaping, Precision Instrumentation Buffering, Audio Preamplifier and Output Buffering, Four-Channel Data Acquisition Front End, Battery-Powered Portable Measurement.
Low-Voltage Sensor Signal Conditioning
The MCP624-E/ST fits sensor-conditioning stages that require four rail-to-rail amplifier channels within a compact 14-pin TSSOP outline. Its 20 MHz typical gain-bandwidth product allows the closed-loop bandwidth to be set according to the sensor and filter requirements, while the 10 V/us typical slew rate preserves useful response for small, rapidly changing signals. The calibrated input offset voltage of 200 uV maximum helps limit DC error in transducer interfaces. Use each channel for gain, impedance conversion, or active filtering, and keep the selected feedback network close to the relevant amplifier pins.
پیشنهادی
Active Filtering and Frequency Shaping
The MCP624-E/ST is appropriate for active filters requiring a 20 MHz typical gain-bandwidth product and 10 V/us typical slew rate in a low-voltage circuit. Its four-channel configuration allows cascaded stages, multi-pole response, or parallel signal conditioning without requiring four separate packages. The 13 nV/Hz typical noise density at 1 MHz can be considered when designing low-amplitude filters, although resistor values and noise gain determine the total output-noise contribution. Keep sensitive summing nodes and feedback components compact, and verify stability and dynamic range against the selected closed-loop topology.
پیشنهادی
Precision Instrumentation Buffering
The MCP624-E/ST can provide high-impedance input buffering and gain stages for instrumentation signals because each channel supports rail-to-rail input and output operation. The 20 MHz typical gain-bandwidth product gives designers more bandwidth margin than a slow offset-focused amplifier, while the calibrated input offset voltage of 200 uV maximum supports low-level DC measurements. Buffering reduces source-loading effects and isolates the sensor from subsequent filter or converter stages. Select suitable precision resistors, keep input leakage and bias-current effects in mind, and confirm that the common-mode and output ranges cover the instrument's signal excursion.
پیشنهادی
Audio Preamplifier and Output Buffering
The MCP624-E/ST is suitable for low-voltage audio preamplifier, mixer, and buffering stages where a 10 V/us typical slew rate is more useful than a micropower operating current. Rail-to-rail inputs and outputs support signal swings approaching the supply limits, and the 13 nV/Hz typical noise density at 1 MHz provides a useful basis for gain planning. Four channels allow stereo preamplification plus additional monitoring or filtering functions. Because audio performance also depends on output loading and loop gain, confirm stability with the selected feedback network and assess the output drive against the connected speaker or line-stage load.
پیشنهادی
Four-Channel Data Acquisition Front End
The MCP624-E/ST's four independent channels can consolidate the analog front end of a compact data-acquisition system. Each amplifier can condition a sensor channel before multiplexing or conversion, while the 20 MHz typical gain-bandwidth product handles higher-bandwidth waveforms and the 10 V/us typical slew rate limits large-signal distortion. The mCal power-up self-calibration can reduce offset errors in DC-sensitive measurements. For best channel consistency, use matched resistors, symmetrical routing, and identical input impedance networks, and verify acquisition settling time after the device's startup calibration.
پیشنهادی
Battery-Powered Portable Measurement
The MCP624-E/ST can serve low-voltage portable measurement circuits when its supply and bandwidth requirements align with the design. Rail-to-rail input and output behavior allows operation near the available supply range, while four channels support several sensor or control functions in one package. The 20 MHz typical gain-bandwidth product is useful for body-signal, environmental, or portable instrumentation nodes, although actual battery life depends on the complete circuit and operating duty cycle. Check the quiescent-current requirement in the manufacturer datasheet, disable unused channels according to the device guidance, and verify startup behavior after power restoration.
پیشنهادی
خلاصه محصولات پیشنهادی
داده‌های مرجع مهندسی برای MCP624-E/ST — مقایسه، راهنمای طراحی و اطلاعات انطباق.
راهنمای انتخاب
مقایسه با جایگزین‌ها
| پارامتر | این محصول | MCP624-I/ST |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Package | 14-TSSOP | 14-TSSOP - same package |
| Number of Amplifiers | 4 circuits | 4 circuits |
| Gain-Bandwidth Product | 20 MHz typical | 20 MHz family rating |
| Slew Rate | 10 V/us typical | 10 V/us family rating |
| Input Offset Voltage | ±200 uV maximum after calibration | ±200 uV maximum family rating |
| Voltage Noise Density | 13 nV/Hz typical at 1 MHz | 13 nV/Hz typical family rating |
| Input and Output | Rail-to-Rail | Rail-to-Rail |
| Calibration | mCal power-up self-calibration | mCal power-up self-calibration |
| Maximum Supply Voltage | 5.5 V | 5.5 V family rating |
| Electrical Grade | -E grade | -I grade |
| Short-Circuit Current | 70 mA typical | 70 mA typical family rating |
تفاوت‌های کلیدی
- Four calibrated channels in one package (در مقابلMCP624-I/ST)
- 20 MHz bandwidth with 10 V/us slew rate (در مقابلMCP624-I/ST)
- Rail-to-rail operation with mCal (در مقابلMCP624-I/ST)
یادداشت‌های طراحی
Place the positive and negative supply capacitors directly beside pins 11 and 4, respectively, and keep the ground return path short. The 14-TSSOP lead spacing limits routing space, so reserve short, direct paths for each feedback loop and avoid routing fast output traces beneath sensitive input pins. A solid ground plane reduces return-path discontinuity, while isolation from switching nodes helps preserve the benefit of the rail-to-rail input stage.
Keep each amplifier's inverting input and feedback components close together to minimize parasitic capacitance and feedback-loop area. The 20 MHz typical gain-bandwidth product is high enough that long PCB traces and excessive load capacitance can alter phase margin, especially at high noise gain. Use the manufacturer's recommended stability guidance, keep output loads within their limits, and test the complete board rather than relying only on ideal simulation results.
Do not permit the supply voltage to exceed the 5.5 V maximum rating, and do not assume rail-to-rail operation guarantees an exact 0 V or 5.5 V output under every load. Unused amplifier inputs should be tied to a valid common-mode voltage instead of being left floating. Also account for the mCal power-up interval when sequencing measurements, because the system should not assume the final offset performance is present immediately at power application.
اطلاعات انطباق
No explicit environmental, automotive, or material-compliance declarations were identified for the exact MCP624-E/ST order code. Confirm the current declarations and product status with the manufacturer before production release.
