Overview
The ADS8699IPWR is a high-performance, 18-bit successive approximation register (SAR) analog-to-digital converter (ADC) from Texas Instruments. It is part of the ADS869x family, which includes the ADS8691 and ADS8695. This device is designed for high-speed and high-precision data acquisition applications. The ADS8699IPWR operates on a single 5-V analog supply and supports a wide range of programmable bipolar and unipolar input ranges. It features an integrated analog front-end (AFE), overvoltage protection, and an on-chip 4.096-V reference with low drift. The device is suitable for various industrial and commercial applications due to its extended industrial temperature range of –40°C to +125°C.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 18 Bits | |
| Sampling Rate | 100 kSPS | |
| Input Ranges (Bipolar) | ±12.288 V, ±10.24 V, ±6.144 V, ±5.12 V, ±2.56 V | V |
| Input Ranges (Unipolar) | 0 V–12.288 V, 0 V–10.24 V, 0 V–6.144 V, 0 V–5.12 V | V |
| Analog Supply Voltage | 1.65 V to 5 V | V |
| I/O Supply Voltage | 1.65 V to 5 V | V |
| Input Impedance | ≥ 1 MΩ | Ω |
| Overvoltage Protection | Up to ±20 V | V |
| Reference Voltage | 4.096 V (internal) | V |
| DNL (Differential Nonlinearity) | –0.9 to 1.1 LSB | LSB |
| INL (Integral Nonlinearity) | –3.25 to 3.25 LSB | LSB |
| SNR (Signal-to-Noise Ratio) | 87.75 to 92.5 dB | dB |
| THD (Total Harmonic Distortion) | –110 dB | dB |
| Operating Temperature Range | –40°C to +125°C | °C |
Key Features
- High-Speed SAR ADC: The ADS8699IPWR offers a sampling rate of 100 kSPS, making it suitable for high-speed data acquisition.
- Programmable Input Ranges: Supports both bipolar and unipolar input ranges, which can be software-programmed.
- Integrated Analog Front-End (AFE): Includes input driver circuits and overvoltage protection up to ±20 V.
- On-Chip Reference: Features a 4.096-V reference with low temperature drift.
- High Resistive Input Impedance: ≥ 1 MΩ, ensuring minimal loading on the input signal.
- MultiSPI Digital Interface: Backward-compatible with traditional SPI protocol and supports daisy-chain mode.
- Extended Industrial Temperature Range: Operates from –40°C to +125°C, making it suitable for harsh environments.
Applications
- Analog Input Modules: Ideal for integrating into analog input modules for various measurement systems.
- Data Acquisition (DAQ): Suitable for high-precision data acquisition systems.
- Semiconductor Tests: Used in testing and characterization of semiconductor devices.
- LCD Tests: Applicable in testing and calibration of LCD panels.
Q & A
- What is the resolution of the ADS8699IPWR?
The ADS8699IPWR has a resolution of 18 bits.
- What are the sampling rates of the ADS8699IPWR?
The ADS8699IPWR has a sampling rate of 100 kSPS.
- What are the programmable input ranges of the ADS8699IPWR?
The device supports bipolar ranges of ±12.288 V, ±10.24 V, ±6.144 V, ±5.12 V, and ±2.56 V, as well as unipolar ranges of 0 V–12.288 V, 0 V–10.24 V, 0 V–6.144 V, and 0 V–5.12 V.
- What is the analog supply voltage range for the ADS8699IPWR?
The analog supply voltage range is from 1.65 V to 5 V.
- Does the ADS8699IPWR have overvoltage protection?
Yes, it has overvoltage protection up to ±20 V.
- What is the reference voltage of the ADS8699IPWR?
The device features an on-chip 4.096-V reference with low temperature drift.
- What is the input impedance of the ADS8699IPWR?
The input impedance is ≥ 1 MΩ.
- What is the operating temperature range of the ADS8699IPWR?
The operating temperature range is from –40°C to +125°C.
- What digital interface does the ADS8699IPWR use?
The device uses a multiSPI digital interface, which is backward-compatible with the traditional SPI protocol.
- What are some common applications of the ADS8699IPWR?
Common applications include analog input modules, data acquisition systems, semiconductor testing, and LCD testing.
