Overview
The ADS8331IPWR is a low-power, 16-bit analog-to-digital converter (ADC) produced by Texas Instruments. This device features a 500-kilosamples-per-second (kSPS) sampling rate and is designed with a unipolar 4-to-1 multiplexer (mux) input. The ADS8331 is based on a 16-bit capacitor-based successive approximation register (SAR) ADC with inherent sample and hold capabilities. It is available in 24-pin TSSOP packages and is fully specified for operation over the industrial temperature range of –40°C to 85°C.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Resolution | 16 | - | 16 | Bits |
| Sampling Rate | - | - | 500 | kSPS |
| Integral Linearity (INL) | -3 | ±2 | 3 | LSB |
| Differential Linearity (DNL) | -1 | ±0.6 | 1.5 | LSB |
| Offset Error | -0.5 | ±0.15 | 0.5 | mV |
| Gain Error | -0.25 | -0.06 | 0.25 | %FSR |
| Signal-to-Noise Ratio (SNR) | - | - | 91.5 | dB |
| Total Harmonic Distortion (THD) | - | - | -100 | dB |
| Analog Supply Voltage (VA) | 2.7 | - | 5.5 | V |
| Digital I/O Supply Voltage (VBD) | 1.65 | - | VA + 0.2 | V |
| Operating Temperature Range | -40 | - | 85 | °C |
Key Features
- Low power consumption: 14.2 mW at 500 kSPS with VA = 2.7 V and VBD = 1.65 V.
- Excellent DC performance: ±1.2 LSB typical, ±2 LSB maximum INL at 2.7 V.
- High AC performance: 91.5-dB SNR, 101-dB SFDR, and –100-dB THD at 5 V.
- Flexible analog input arrangement: On-chip 4-channel mux with breakout, auto and manual channel select, and trigger.
- On-chip conversion clock (CCLK) and software/hardware reset.
- Programmable status, polarity EOC/INT, and daisy-chain mode.
- Deep, nap, and auto-NAP powerdown modes.
- SPI™ and DSP compatible serial interface.
- Separate I/O supply: 1.65 V to VA.
- 24-pin TSSOP and VQFN packages.
Applications
- Communications
- Transducer Interfaces
- Medical Instruments
- Magnetometers
- Industrial Process Controls
- Data Acquisition Systems
- Automatic Test Equipment
Q & A
- What is the resolution of the ADS8331IPWR?
The ADS8331IPWR has a 16-bit resolution.
- What is the maximum sampling rate of the ADS8331IPWR?
The maximum sampling rate is 500 kSPS.
- What is the typical power consumption at 500 kSPS?
The typical power consumption is 14.2 mW at VA = 2.7 V and VBD = 1.65 V.
- What are the operating temperature ranges for the ADS8331IPWR?
The operating temperature range is –40°C to 85°C.
- What types of packages are available for the ADS8331IPWR?
The device is available in 24-pin TSSOP and VQFN packages.
- What is the signal-to-noise ratio (SNR) of the ADS8331IPWR?
The SNR is up to 91.5 dB.
- Does the ADS8331IPWR support daisy-chain operation?
Yes, it supports daisy-chain operation when multiple converters are used.
- What are the powerdown modes available for the ADS8331IPWR?
The device features deep, nap, and auto-NAP powerdown modes.
- What is the range for the analog supply voltage (VA)?
The analog supply voltage range is from 2.7 V to 5.5 V.
- What is the range for the digital I/O supply voltage (VBD)?
The digital I/O supply voltage range is from 1.65 V to VA + 0.2 V.
