MAX4175BKEUK vs MAX4074AOEUK
| Part Number |
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| Category | Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps | Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps |
| Manufacturer | Maxim Integrated | Maxim Integrated |
| Description | GAINAMP/OPEN-LOOP OP AMP | MICROPOWER, RAIL-TO RAIL, FIXED- |
| Package | Bulk | Bulk |
| Series | - | GainAmp™ |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 70°C |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | SC-74A, SOT-753 | SC-74A, SOT-753 |
| Supplier Device Package | SOT-23-5 | SOT-23-5 |
| Current - Supply | 355µA | 37µA |
| Output Type | Rail-to-Rail | Rail-to-Rail |
| Number of Circuits | 1 | 1 |
| Voltage - Supply, Single/Dual (±) | 2.5V ~ 5.5V, ±1.25V ~ 2.75V | 2.5V ~ 5.5V |
| Current - Output / Channel | 65 mA | 22 mA |
| -3db Bandwidth | 330 kHz | 90 kHz |
| Amplifier Type | General Purpose | General Purpose |
| Current - Input Bias | 50 pA | 0.8 pA |
| Voltage - Input Offset | 500 µV | 200 µV |
| Slew Rate | 0.7V/µs | 0.1V/µs |
| Gain Bandwidth Product | 2 MHz | 4 MHz |
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1. What is Common Mode Rejection Ratio (CMRR) and why is it important for instrumentation amplifiers?
CMRR indicates an instrumentation amplifier's ability to suppress common mode signals, with higher values being better. A high CMRR is especially important in noisy environments to ensure that the amplifier primarily amplifies differential signals and is not affected by common mode interference.
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2. How are operational amplifiers used in filter circuits?
Operational amplifiers can be used to build a variety of active filter circuits, including low-pass, high-pass, band-pass, and band-reject filters, which are commonly used for noise removal and signal conditioning in signal processing.
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3. What are the application scenarios of buffer amplifiers?
Buffer amplifiers are commonly used in signal isolation, impedance matching, voltage follower and power amplification scenarios, and are suitable for protecting weak signal sources from load effects in signal processing chains.
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4. Why do buffer amplifiers have high input impedance and low output impedance?
A high input impedance ensures that no load is applied to the preamplifier circuitry, preventing signal degradation, while a low output impedance provides a large driving capacity, ensuring that the signal can be passed on to subsequent circuits without loss.
