Overview
The ADS8331IRGET is a low-power, 16-bit analog-to-digital converter (ADC) produced by Texas Instruments. This device features a 500-k samples-per-second (kSPS) sampling rate and is designed with a unipolar, 4-to-1 multiplexer (mux) input. The ADS8331IRGET includes a 16-bit capacitor-based successive approximation register (SAR) ADC with inherent sample and hold, making it suitable for various data acquisition applications. It is available in 24-pin, 4 × 4 VQFN and 24-pin TSSOP packages and is fully specified for operation over the industrial –40°C to 85°C temperature range.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Analog Supply Range | 2.7 V to 5.5 V | V |
| Sampling Rate | Up to 500 kSPS | kSPS |
| Resolution | 16 Bits | Bits |
| Integral Linearity (INL) | ±1.2 LSB (Typical), ±2 LSB (Maximum) | LSB |
| Differential Linearity (DNL) | ±0.6 LSB (Typical), –1/1.5 LSB (Maximum) | LSB |
| Power Consumption (250 kSPS in Auto-NAP Mode) | 8.7 mW (VA = 2.7 V, VBD = 1.65 V) | mW |
| Power Consumption (500 kSPS) | 14.2 mW (VA = 2.7 V, VBD = 1.65 V) | mW |
| Operating Temperature Range | –40°C to 85°C | °C |
| Package Type | 24-Pin VQFN (RGE) and 24-Pin TSSOP | |
| Serial Interface | SPI™/DSP Compatible, SCLK up to 40 MHz |
Key Features
- Low-Power, Flexible Supply Range: 2.7-V to 5.5-V Analog Supply
- Up to 500-kSPS Sampling Rate
- Excellent DC Performance: ±1.2 LSB Typical, ±2 LSB Maximum INL at 2.7 V; ±0.6 LSB Typical, –1/1.5 LSB Maximum DNL at 2.7 V
- Flexible Analog Input Arrangement: On-Chip 4-/8-Channel Mux With Breakout, Auto/Manual Channel Select and Trigger
- Other Hardware Features: On-Chip Conversion Clock (CCLK), Software/Hardware Reset, Programmable Status/Polarity EOC/INT, Daisy-Chain Mode, Global CONVST (Independent of CS), Deep, Nap, and Auto-NAP Powerdown Modes
- SPI™/DSP Compatible Serial Interface: Separate I/O Supply: 1.65 V to VA, SCLK up to 40 MHz (VA = VBD = 5 V)
Applications
The ADS8331IRGET is suitable for a variety of data acquisition applications, including industrial automation, medical devices, and automotive systems. Its low power consumption and high sampling rate make it ideal for battery-powered devices and systems requiring high-speed data conversion. Additionally, it can be used in applications involving the measurement of physical phenomena such as temperature, pressure, and conductivity.
Q & A
- What is the sampling rate of the ADS8331IRGET? The ADS8331IRGET has a sampling rate of up to 500 kSPS.
- What is the resolution of the ADS8331IRGET? The resolution of the ADS8331IRGET is 16 bits.
- What is the operating temperature range of the ADS8331IRGET? The operating temperature range is –40°C to 85°C.
- What types of packages are available for the ADS8331IRGET? The ADS8331IRGET is available in 24-pin VQFN (RGE) and 24-pin TSSOP packages.
- What is the power consumption of the ADS8331IRGET at 250 kSPS in Auto-NAP mode? The power consumption is 8.7 mW (VA = 2.7 V, VBD = 1.65 V).
- Does the ADS8331IRGET support daisy-chain operation? Yes, the ADS8331IRGET supports daisy-chain operation when multiple converters are used.
- What is the maximum SCLK frequency for the SPI interface? The maximum SCLK frequency is up to 40 MHz (VA = VBD = 5 V).
- What are the key DC performance specifications of the ADS8331IRGET? The key DC performance specifications include ±1.2 LSB Typical, ±2 LSB Maximum INL at 2.7 V and ±0.6 LSB Typical, –1/1.5 LSB Maximum DNL at 2.7 V.
- Does the ADS8331IRGET have powerdown modes? Yes, the ADS8331IRGET has Deep, Nap, and Auto-NAP powerdown modes.
- What is the typical offset error of the ADS8331IRGET? The typical offset error is ±0.15 mV.
