TLE2237CDW vs INA185A1IDRLT
| Part Number |
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| Category | Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps | Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps |
| Manufacturer | Texas Instruments | Texas Instruments |
| Description | OPERATIONAL AMPLIFIER | IC CURR SENSE 1 CIRCUIT SOT563 |
| Package | Bulk | -Reel® |
| Series | Excalibur™ | - |
| Operating Temperature | 0°C ~ 70°C (TA) | -40°C ~ 125°C (TA) |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 16-SOIC (0.295\", 7.50mm Width) | SOT-563, SOT-666 |
| Supplier Device Package | 16-SOIC | SOT-563 |
| Current - Supply | 7.3mA (x2 Channels) | 200µA |
| Output Type | - | Rail-to-Rail |
| Number of Circuits | 2 | 1 |
| Voltage - Supply, Single/Dual (±) | ±4V ~ 19V | 2.7V ~ 5.5V |
| Current - Output / Channel | 50 mA | - |
| -3db Bandwidth | - | - |
| Amplifier Type | General Purpose | Current Sense |
| Current - Input Bias | 15 nA | 75 µA |
| Voltage - Input Offset | 100 µV | 100 µV |
| Slew Rate | 5V/µs | 2V/µs |
| Gain Bandwidth Product | 50 MHz | 350 kHz |
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1. What is an instrumentation amplifier and what is it mainly used for?
An instrumentation amplifier is a high-precision amplifier designed to amplify low-level differential signals with high input impedance and high common mode rejection ratio (CMRR), and is commonly used in scenarios such as medical equipment, sensor signal processing, and industrial measurements.
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2. 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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3. How to achieve high accuracy and low drift in instrumentation amplifiers?
Select an amplifier with low bias current, low offset voltage, and low noise, and reduce the effect of temperature drift on accuracy through a stable power supply and proper temperature compensation circuit design.
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4. What is the effect of the op amp's out-of-range voltage on accuracy?
An out-of-phase voltage is the difference in voltage at which the output is not zero when the signal at the input is zero. A large out-of-phase voltage reduces the accuracy of a system, especially in high-gain applications, and selecting an op amp with a low out-of-phase voltage can improve accuracy.
