Overview
The ADS8665IPW is a high-performance 12-bit analog-to-digital converter (ADC) produced by Texas Instruments. It is part of the ADS866x family, which features integrated data acquisition systems based on successive approximation (SAR) ADC architecture. This device is designed for high-speed and high-precision data conversion, making it suitable for a variety of applications requiring accurate and reliable analog-to-digital conversion.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution (Bits) | 12 |
| Sample Rate (max) (kSPS) | 500 |
| Number of Input Channels | 1 |
| Interface Type | Enhanced SPI, SPI |
| Architecture | SAR |
| Input Type | Single-ended |
| Input Voltage Range | ±12.288 V, ±10.24 V, ±6.144 V, ±5.12 V, ±2.56 V (bipolar); 0 V–12.288 V, 0 V–10.24 V, 0 V–6.144 V, 0 V–5.12 V (unipolar) |
| Analog Supply Voltage | 4.75 V ~ 5.25 V |
| Digital Supply Voltage | 1.65 V ~ 5.25 V |
| Operating Temperature Range (°C) | -40 to 125 |
| Power Consumption (typ) (mW) | 25 |
| SNR (dB) | 74 |
| THD (dB) | -102 |
| Package | TSSOP-16 |
Key Features
- High-speed, high-precision 12-bit SAR ADC with integrated analog front-end (AFE) input driver circuit.
- Software programmable input ranges: bipolar (±12.288 V, ±10.24 V, ±6.144 V, ±5.12 V, ±2.56 V) and unipolar (0 V–12.288 V, 0 V–10.24 V, 0 V–6.144 V, 0 V–5.12 V).
- Constant resistive input impedance ≥ 1 MΩ.
- Input overvoltage protection up to ±20 V.
- On-chip, 4.096-V reference with low drift.
- Excellent performance: DNL ±0.1 LSB, INL ±0.15 LSB.
- MultiSPI digital interface with daisy-chain capability.
- Extended industrial temperature range: -40°C to +125°C.
Applications
The ADS8665IPW is suitable for various applications that require high-precision and high-speed analog-to-digital conversion. These include:
- Industrial automation and control systems.
- Medical devices and diagnostic equipment.
- Aerospace and defense systems.
- Automotive systems, especially those requiring high reliability and precision.
- Test and measurement equipment.
Q & A
- What is the resolution of the ADS8665IPW ADC?
The ADS8665IPW has a resolution of 12 bits. - What is the maximum sampling rate of the ADS8665IPW?
The maximum sampling rate is 500 kSPS. - What types of input ranges are supported by the ADS8665IPW?
The device supports both bipolar (±12.288 V, ±10.24 V, ±6.144 V, ±5.12 V, ±2.56 V) and unipolar (0 V–12.288 V, 0 V–10.24 V, 0 V–6.144 V, 0 V–5.12 V) input ranges. - What is the operating temperature range of the ADS8665IPW?
The operating temperature range is -40°C to +125°C. - Does the ADS8665IPW have overvoltage protection?
Yes, it has input overvoltage protection up to ±20 V. - What is the power consumption of the ADS8665IPW?
The typical power consumption is 25 mW. - What digital interface does the ADS8665IPW use?
The device uses an Enhanced SPI and traditional SPI-compatible interface. - Is the ADS8665IPW RoHS compliant?
Yes, the ADS8665IPW is RoHS3 compliant. - What is the package type of the ADS8665IPW?
The package type is TSSOP-16. - What are the key performance metrics of the ADS8665IPW?
The key performance metrics include SNR of 74 dB, THD of -102 dB, DNL of ±0.1 LSB, and INL of ±0.15 LSB.
