AD648CH vs HA2-5135-7
| Part Number |
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| Category | Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps | Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps |
| Manufacturer | Analog Devices Inc. | Harris Corporation |
| Description | DUAL OP AMP | PRECISION OPERATIONAL AMPLIFIER |
| Package | Bulk | Bulk |
| Series | - | - |
| Operating Temperature | 0°C ~ 70°C | - |
| Mounting Type | Surface Mount | Through Hole |
| Package / Case | 8-SOIC (0.154\", 3.90mm Width) | TO-99-8 Metal Can |
| Supplier Device Package | 8-SOIC | TO-99-8 |
| Current - Supply | 340µA (x2 Channels) | - |
| Output Type | - | - |
| Number of Circuits | 2 | 1 |
| Voltage - Supply, Single/Dual (±) | ±4.5V ~ 18V | - |
| Current - Output / Channel | 15 mA | - |
| -3db Bandwidth | 1 MHz | - |
| Amplifier Type | J-FET | General Purpose |
| Current - Input Bias | 3 pA | - |
| Voltage - Input Offset | 300 µV | - |
| Slew Rate | 1.8V/µs | - |
| Gain Bandwidth Product | 1 MHz | - |
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1. What is a rail-to-rail operational amplifier and what are its advantages?
Rail-to-rail op amps are capable of extending the output voltage range to the limit of the supply voltage (i.e., the “rail”), allowing them to handle large dynamic range signals even at low supply voltages, making them particularly suitable for low-voltage power supply systems and portable devices.
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2. What is a Buffer Amp and what is its function?
A Buffer Amp is an amplifier with a unit gain that is mainly used in voltage follower circuits to provide a high input impedance and a low output impedance to isolate the signal source from the load and prevent signal distortion or attenuation.
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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.
