Overview
The ADS8661IPWR is a 12-bit, high-speed, single-supply SAR ADC (Successive Approximation Register Analog-to-Digital Converter) manufactured by Texas Instruments. This model is part of the ADS866x series and is designed for data acquisition systems requiring high precision and performance. It is packaged in a TSSOP-16 form factor, making it suitable for surface-mount applications. The ADS8661IPWR is targeted at industrial, automotive, and consumer electronics markets, offering a competitive edge with its programmable bipolar input ranges and robust performance.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Resolution | 12 | bits | |
| Sampling Rate | 1.25 | MSPS | |
| Input Range | Programmable | V | Bipolar: ±12.288V, ±10.24V, ±6.144V, ±5.12V, ±2.56V; Unipolar: 0V–12.288V, 0V–10.24V, 0V–6.144V, 0V–5.12V |
| Supply Voltage | 1.65 to 5 | V | |
| Operating Temperature | -40 to +125 | °C | |
| Package | TSSOP-16 | ||
| Input Impedance | ≥1 | MΩ | |
| Overvoltage Protection | ±20 | V | |
| DNL | ±0.1 | LSB | |
| INL | ±0.15 | LSB | |
| SNR | 74 | dB | |
| THD | -102 | dB |
Key Features
- Programmable bipolar input ranges for versatile application.
- High-speed sampling rate of 1.25 MSPS for real-time data acquisition.
- Integrated analog front-end simplifies system design.
- Low power consumption with a supply voltage range of 1.65V to 5V.
- Robust overvoltage protection up to ±20V.
- Enhanced SPI interface with daisy-chain capability for easy system integration.
Applications
The ADS8661IPWR is widely used in industrial automation, automotive systems, and consumer electronics. Its high precision and programmable input ranges make it ideal for applications such as motor control, power monitoring, and data acquisition systems. In automotive electronics, it is used for battery management and sensor signal processing. In consumer electronics, it supports audio processing and signal conditioning.
Q & A
1. What is the resolution of the ADS8661IPWR?
The ADS8661IPWR has a resolution of 12 bits.
2. What is the sampling rate of this ADC?
The sampling rate is 1.25 MSPS.
3. What are the programmable input ranges?
The input ranges include bipolar (±12.288V, ±10.24V, ±6.144V, ±5.12V, ±2.56V) and unipolar (0V–12.288V, 0V–10.24V, 0V–6.144V, 0V–5.12V).
4. What is the operating temperature range?
The operating temperature range is -40°C to +125°C.
5. What is the supply voltage range?
The supply voltage range is 1.65V to 5V.
6. Does it support overvoltage protection?
Yes, it supports overvoltage protection up to ±20V.
7. What is the input impedance?
The input impedance is ≥1 MΩ.
8. What is the package type?
The package type is TSSOP-16.
9. What are the typical applications?
Typical applications include industrial automation, automotive electronics, and consumer electronics.
10. Does it support daisy-chain capability?
Yes, it supports daisy-chain capability through its enhanced SPI interface.
