MCP634-E/ST Microchip Integrated Circuit (Small Outline Packages) In Stock
The MCP634-E/ST is a quad voltage-feedback operational amplifier from Microchip with 24 MHz gain-bandwidth product, 81 dB typical CMRR, and 5 nA max bias current in a 14-pin TSSOP package. Rated for the extended industrial temperature range, it suits precision signal conditioning and active filter designs.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 14
- Lifecycle
- ACTIVE
- Datasheet
- MCP634-E/ST Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.3000(MOQ 1)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of MCP634-E/ST?
- Quad op-amp with 24 MHz gain-bandwidth product (GBP) enabling high-speed active filter and signal amplification stages
- Ultra-low 5 nA maximum input bias current and 81 dB typical CMRR for precision differential signal conditioning
- Extended temperature range (-40 °C to +125 °C) in a compact 14-pin TSSOP package for industrial and automotive analog front-ends
What is MCP634-E/ST used for?
The MCP634-E/ST is well suited for active bandpass and anti-aliasing filter stages in data acquisition systems, where four amplifiers in a single 14-pin TSSOP reduce component count and board space. Its 24 MHz GBP supports audio signal processing, sensor bridge amplification, and high-speed comparator applications in industrial equipment. The extended temperature rating (-40 °C to +125 °C) makes it a reliable choice for automotive ECU analog front-ends and outdoor instrumentation exposed to wide thermal swings.
What are the specifications of MCP634-E/ST?
| Manufacturer Package Code | TSSOP-14 |
| Factory Lead Time | 7Weeks |
| YTEOL | 14 |
| Amplifier Type | OPERATIONAL AMPLIFIER |
| Architecture | VOLTAGE-FEEDBACK |
| Average Bias Current-Max (IIB) | 0.005 µA |
| Common-mode Reject Ratio-Min | 66dB |
| Common-mode Reject Ratio-Nom | 81dB |
| Frequency Compensation | YES |
| Input Offset Voltage-Max | 8000 µV |
| JESD-30 Code | R-PDSO-G14 |
| JESD-609 Code | e3 |
| Low-Bias | YES |
| Low-Offset | NO |
| Micropower | NO |
| Number of Functions | 4 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP14,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Packing Method | TUBE |
| Peak Reflow Temperature (Cel) | 260 |
| Power | NO |
| Programmable Power | NO |
| Screening Level | TS 16949 |
| Slew Rate-Nom | 10V/us |
| Supply Current-Max | 14.4mA |
| Supply Voltage Limit-Max | 6.5V |
| Supply Voltage-Nom (Vsup) | 2.5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| Unity Gain BW-Nom | 24000 |
| Voltage Gain-Min | 25100 |
| Wideband | NO |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Thailand |
Where can I find the MCP634-E/ST datasheet?
MCP634-E/ST Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for MCP634-E/ST?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the gain-bandwidth product of the MCP634-E/ST, and how does it affect usable bandwidth at different closed-loop gains?
The MCP634-E/ST has a 24 MHz gain-bandwidth product. At a closed-loop gain of 10 V/V, the usable -3 dB bandwidth is approximately 2.4 MHz; at unity gain it extends to the full 24 MHz. This makes the amplifier suitable for audio and instrumentation stages requiring flat response up to several megahertz without external frequency compensation.
How does the MCP634-E/ST's 5 nA bias current benefit high-impedance sensor interfaces?
With a maximum input bias current of 5 nA (0.005 µA), the MCP634-E/ST introduces less than 5 µV of offset error across a 1 kΩ source impedance, which is negligible in most precision designs. High-impedance sources such as pH electrodes, photodiodes, and resistive bridge sensors can be directly coupled without a JFET buffer stage, reducing circuit complexity.
Which supply voltage range supports the MCP634-E/ST, and can it be used in single-supply 3.3 V systems?
The MCP634-E/ST operates from a single 2.7 V to 6 V supply or a dual ±1.35 V to ±3 V supply. On a single 3.3 V rail it functions within specification, and the rail-to-rail output swing allows the output to swing within millivolts of both supply rails, maximizing dynamic range in low-voltage sensor conditioning circuits.
When would a designer choose the MCP634 quad package over four separate single op-amp ICs in an active filter bank?
Placing four amplifiers in a single 14-pin TSSOP reduces board area by roughly 60% compared to four discrete SOT-23-5 single op-amps and cuts soldering points from 20 to 14. For a 4-pole Sallen-Key or multiple-feedback filter requiring matched amplifiers, a quad package also improves channel-to-channel thermal tracking and simplifies PCB routing, lowering BOM cost and assembly time.
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More from Microchip
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $1.9900 | $1.99 |
| 10+ | $1.7700 | $17.70 |
| 25+ | $1.6000 | $40.00 |
| 96+ | $1.4600 | $140.16 |
| 2592+ | $1.3100 | $3395.52 |
| 5088+ | $1.3000 | $6614.40 |
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