Overview
The ADS8331IBPWR is a low-power, 16-bit analog-to-digital converter (ADC) produced by Texas Instruments. This device features a unipolar, 4-to-1 multiplexer (mux) input and operates at a sampling rate of up to 500 kilosamples per second (kSPS). It is designed with a 16-bit capacitor-based successive approximation register (SAR) ADC, which includes inherent sample and hold functionality. The ADS8331IBPWR is available in 24-pin TSSOP and 24-pin VQFN packages and is fully specified for operation over the industrial temperature range of –40°C to 85°C.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 16 | Bits |
| Sample Rate (max) | 500 | kSPS |
| Number of Input Channels | 4 | |
| Interface Type | SPI | |
| Architecture | SAR | |
| Input Type | Pseudo-Differential, Single-ended | |
| Reference Mode | External | |
| Input Voltage Range (min) | 0 | V |
| Input Voltage Range (max) | 4.2 | V |
| Operating Temperature Range | –40 to 85 | °C |
| Analog Supply (min) | 2.7 | V |
| Analog Supply (max) | 5.5 | V |
| Digital Supply (min) | 1.65 | V |
| Digital Supply (max) | 5.5 | V |
| Power Consumption (typ) | 14.2 | mW |
| SNR (dB) | 91.5 | dB |
Key Features
- Low-Power Operation: The ADS8331IBPWR operates with low power consumption, typically 14.2 mW at 500 kSPS and 8.7 mW at 250 kSPS in Auto-NAP mode.
- Flexible Supply Range: Supports an analog supply range of 2.7 V to 5.5 V and a digital supply range of 1.65 V to 5.5 V.
- High-Speed Sampling: Capable of sampling rates up to 500 kSPS.
- Excellent DC and AC Performance: Features high integral linearity (INL) and differential linearity (DNL), along with excellent signal-to-noise ratio (SNR) and spurious-free dynamic range (SFDR).
- Flexible Analog Input Arrangement: Includes a 4-to-1 multiplexer with auto/manual channel select and trigger options.
- Daisy-Chain Mode: Supports daisy-chain operation for multiple converters.
- Powerdown Modes: Offers deep, nap, and auto-NAP powerdown modes for power efficiency.
- SPI/DSP Compatible Serial Interface: Supports high-speed SPI clock up to 40 MHz.
Applications
- Communications: Suitable for various communication systems due to its high-speed and low-power characteristics.
- Transducer Interfaces: Ideal for interfacing with transducers in industrial and medical applications.
- Medical Instruments: Used in medical devices requiring precise and low-power ADCs.
- Magnetometers: Applicable in magnetometer systems that require high-resolution ADCs.
- Industrial Process Controls: Employed in industrial process control systems for data acquisition and monitoring.
- Data Acquisition Systems: Suitable for data acquisition systems that need high-speed and accurate ADCs.
- Automatic Test Equipment: Used in automatic test equipment for precise measurement and testing.
Q & A
- What is the resolution of the ADS8331IBPWR?
The ADS8331IBPWR has a resolution of 16 bits.
- What is the maximum sampling rate of the ADS8331IBPWR?
The maximum sampling rate is up to 500 kSPS.
- What are the supported supply voltage ranges for the ADS8331IBPWR?
The analog supply range is 2.7 V to 5.5 V, and the digital supply range is 1.65 V to 5.5 V.
- What types of input configurations are supported by the ADS8331IBPWR?
The device supports pseudo-differential and single-ended input configurations.
- Does the ADS8331IBPWR support daisy-chain operation?
Yes, it supports daisy-chain operation for multiple converters.
- What are the power consumption characteristics of the ADS8331IBPWR?
Typically, it consumes 14.2 mW at 500 kSPS and 8.7 mW at 250 kSPS in Auto-NAP mode.
- What is the operating temperature range of the ADS8331IBPWR?
The operating temperature range is –40°C to 85°C.
- What interface type does the ADS8331IBPWR use?
The device uses an SPI-compatible serial interface.
- Does the ADS8331IBPWR have any powerdown modes?
Yes, it offers deep, nap, and auto-NAP powerdown modes for power efficiency.
- What are some common applications of the ADS8331IBPWR?
Common applications include communications, transducer interfaces, medical instruments, magnetometers, industrial process controls, data acquisition systems, and automatic test equipment.
