OPA2202IDGKT vs MCP6V87-E/MS
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| Category | Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps | Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps |
| Manufacturer | Texas Instruments | Microchip Technology |
| Description | IC OPAMP GP 2 CIRCUIT 8VSSOP | DUAL, ZERO-DRIFT OP AMP, E TEMP |
| Package | Tape & Reel (TR) | Tube |
| Series | - | Zero-Drift |
| Operating Temperature | -40°C ~ 105°C (TA) | -40°C ~ 125°C |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 8-TSSOP, 8-MSOP (0.118\", 3.00mm Width) | 8-TSSOP, 8-MSOP (0.118\", 3.00mm Width) |
| Supplier Device Package | 8-VSSOP | 8-MSOP |
| Current - Supply | 580µA (x2 Channels) | 500µA |
| Output Type | - | Rail-to-Rail |
| Number of Circuits | 2 | 2 |
| Voltage - Supply, Single/Dual (±) | 4.5V ~ 36V, ±2.25V ~ 18V | 2.5V ~ 5.5V |
| Current - Output / Channel | 35 mA | 40 mA |
| -3db Bandwidth | - | - |
| Amplifier Type | General Purpose | Chopper (Zero-Drift) |
| Current - Input Bias | 250 pA | 2 pA |
| Voltage - Input Offset | 20 µV | 25 µV |
| Slew Rate | 0.35V/µs | 4V/µs |
| Gain Bandwidth Product | 1 MHz | 5 MHz |
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1. How is the noise performance of instrumentation amplifiers optimized?
Select low-noise amplifiers in your design and use shielding, filters, and precise power management to minimize external noise. High-quality resistors should be used wherever possible and PCB layout should be optimized to reduce noise coupling.
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2. What is Slew Rate and how does it affect op amp performance?
Slew rate is the maximum rate of change of an operational amplifier's output voltage over time. Higher slew rates are good for fast-changing signals and can handle higher frequency inputs, while lower slew rates can cause signal distortion.
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3. 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.
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4. How do buffer amplifiers improve the signal integrity of a system?
Buffer amplifiers ensure distortion-free transmission of signals from source to load by providing impedance matching and current driving capability, preventing signal attenuation and noise interference, especially effective when transmitting over long distances or driving large loads.
