Overview
The INA217AIPG4, produced by Texas Instruments, is a low-noise, low-distortion monolithic instrumentation amplifier. This device is designed to provide superior performance in various applications requiring high fidelity signal amplification. It features current-feedback circuitry, which enables wide bandwidth and excellent dynamic response over a wide range of gain settings. The INA217 is particularly suited for low-level audio signals, such as those from balanced low-impedance microphones, and is also ideal for industrial, instrumentation, and medical applications due to its low noise and wide bandwidth characteristics.
Key Specifications
| Parameter | Test Conditions | Unit | Min | Max | |
|---|---|---|---|---|---|
| Gain Range | V/V | 1 | 10000 | ||
| Gain Error (G = 1) | % | ±0.1 | ±0.25 | ||
| Gain Error (G = 100) | % | ±0.2 | |||
| Gain Temperature Drift Coefficient (G = 1) | TA = –40°C to 85°C | ppm/°C | ±3 | ±10 | |
| Nonlinearity (G = 1) | % of FS | ±0.0003 | |||
| Common-Mode Rejection Ratio (G = 100) | VCM = ±11 V, RSRC = 0 Ω | dB | 100 | 116 | |
| Input Bias Current | µA | 2 | 12 | ||
| Bandwidth, Small Signal, –3 dB (G = 100) | kHz | 800 | |||
| Slew Rate | V/µs | 15 | |||
| THD+Noise (G = 100, f = 1 kHz) | % | 0.004 | 0.1 | ||
| Supply Voltage Range | V | ±4.5 | ±18 | ||
| Operating Temperature Range | °C | –40 | 85 |
Key Features
- Low Noise: 1.3 nV/√Hz at 1 kHz, providing near-theoretical noise performance for 200-Ω source impedance.
- Low Distortion: Total Harmonic Distortion plus Noise (THD+N) of 0.004% at 1 kHz with a gain of 100.
- Wide Bandwidth: Up to 800 kHz at a gain of 100, ensuring excellent dynamic response.
- High Common-Mode Rejection Ratio (CMRR): Greater than 100 dB, enhancing the ability to reject common-mode signals.
- Wide Supply Voltage Range: Operates from ±4.5 V to ±18 V, making it versatile for various power supply configurations.
- Gain Set With External Resistor: Gain is adjustable using an external resistor (RG), with a gain equation of G = 1 + 10k/RG.
- Differential Input and High Output Current Drive: Suitable for professional microphone preamps, moving-coil transducer amplifiers, and other high-level audio applications.
- Available Packages: DIP-8 and SOL-16 widebody packages, offering flexibility in design and layout.
Applications
- Professional Microphone Preamps: Ideal for amplifying low-level audio signals from balanced microphones.
- Moving-coil Transducer Amplifiers: Suitable for amplifying signals from moving-coil transducers.
- Differential Receivers and Bridge Transducer Amplifiers: Used in various industrial and instrumentation applications requiring differential signal amplification.
- Industrial and Medical Applications: Beneficial for applications requiring low noise and wide bandwidth, such as in medical devices and industrial instrumentation.
Q & A
- What is the typical noise level of the INA217 at 1 kHz?
The INA217 has a typical noise level of 1.3 nV/√Hz at 1 kHz.
- What is the maximum bandwidth of the INA217 at a gain of 100?
The maximum bandwidth of the INA217 at a gain of 100 is 800 kHz.
- How is the gain of the INA217 set?
The gain of the INA217 is set using an external resistor (RG) with the gain equation G = 1 + 10k/RG.
- What is the common-mode rejection ratio (CMRR) of the INA217 at a gain of 100?
The CMRR of the INA217 at a gain of 100 is greater than 100 dB.
- What is the operating temperature range of the INA217?
The INA217 operates over a temperature range of –40°C to 85°C.
- What are the typical applications of the INA217?
The INA217 is typically used in professional microphone preamps, moving-coil transducer amplifiers, differential receivers, and bridge transducer amplifiers.
- What is the slew rate of the INA217?
The slew rate of the INA217 is 15 V/µs.
- What is the total harmonic distortion plus noise (THD+N) of the INA217 at 1 kHz with a gain of 100?
The THD+N of the INA217 at 1 kHz with a gain of 100 is 0.004%.
- What are the available packages for the INA217?
The INA217 is available in DIP-8 and SOL-16 widebody packages.
- What is the supply voltage range of the INA217?
The INA217 operates from a supply voltage range of ±4.5 V to ±18 V.
