Overview
The ADS8331IBPW is a low-power, 16-bit analog-to-digital converter (ADC) produced by Texas Instruments. This device features a high-speed, wide-voltage serial interface and is designed for various applications requiring precise and efficient analog-to-digital conversion. The ADS8331IBPW includes a 4-to-1 unipolar input multiplexer (mux) and is based on a 16-bit capacitor-based successive approximation register (SAR) ADC with inherent sample and hold capabilities. It operates over a wide voltage range and is fully specified for the industrial temperature range of –40°C to 85°C.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 16 Bits | |
| Sampling Rate | Up to 500 kSPS | |
| Analog Supply Voltage (VA) | 2.7 V to 5.5 V | V |
| Digital Interface Supply Voltage (VBD) | 1.65 V to VA | V |
| Integral Linearity (INL) | –2 to +2 LSB (typical: ±1.2 LSB) | LSB |
| Differential Linearity (DNL) | –1 to +1 LSB (typical: ±0.6 LSB) | LSB |
| Offset Error | –0.5 to +0.5 mV (typical: ±0.15 mV) | mV |
| Gain Error | –0.25 to +0.25 %FSR (typical: –0.06 %FSR) | %FSR |
| Signal-to-Noise Ratio (SNR) | Up to 91.5 dB at 5 V, fIN = 1 kHz | dB |
| Spurious-Free Dynamic Range (SFDR) | Up to 101 dB at 5 V, fIN = 1 kHz | dB |
| Total Harmonic Distortion (THD) | –100 dB at 5 V, fIN = 1 kHz | dB |
| Operating Temperature Range | –40°C to 85°C | °C |
| Package Types | 24-Pin 4-mm × 4-mm VQFN, 24-Pin TSSOP |
Key Features
- Low power consumption: 14.2 mW at 500 kSPS with VA = 2.7 V and VBD = 1.65 V.
- High-speed serial interface: SPI compatible with SCLK up to 40 MHz.
- Flexible analog input arrangement: On-chip 4-to-1 or 8-to-1 multiplexer with auto, manual channel select and trigger.
- Programmable status, polarity EOC/INT, and daisy-chain mode.
- Deep, nap, and auto-NAP powerdown modes for power management.
- On-chip conversion clock (CCLK) and software/hardware reset capabilities.
- Separate I/O supply: 1.65 V to VA.
Applications
- Communications
- Transducer Interfaces
- Medical Instruments
- Magnetometers
- Industrial Process Controls
- Data Acquisition Systems
- Automatic Test Equipment
Q & A
- What is the resolution of the ADS8331IBPW ADC?
The ADS8331IBPW has a resolution of 16 bits.
- What is the maximum sampling rate of the ADS8331IBPW?
The maximum sampling rate is up to 500 kSPS.
- What is the operating voltage range for the analog supply (VA)?
The analog supply voltage (VA) ranges from 2.7 V to 5.5 V.
- What types of packages are available for the ADS8331IBPW?
The device is available in 24-Pin 4-mm × 4-mm VQFN and 24-Pin TSSOP packages.
- What are the key power management features of the ADS8331IBPW?
The device features deep, nap, and auto-NAP powerdown modes for efficient power management.
- What is the signal-to-noise ratio (SNR) of the ADS8331IBPW at 5 V and 1 kHz input frequency?
The SNR is up to 91.5 dB at 5 V and 1 kHz input frequency.
- Can the ADS8331IBPW operate in daisy-chain mode?
- What is the typical power consumption of the ADS8331IBPW at 500 kSPS with VA = 2.7 V and VBD = 1.65 V?
The typical power consumption is 14.2 mW.
- What are some of the key applications for the ADS8331IBPW?
The device is suitable for communications, transducer interfaces, medical instruments, magnetometers, industrial process controls, data acquisition systems, and automatic test equipment.
- What is the operating temperature range for the ADS8331IBPW?
The device operates over the industrial temperature range of –40°C to 85°C.
