Overview
The ADS8331IBRGET is a low-power, 16-bit, 500-k samples-per-second (SPS) analog-to-digital converter (ADC) produced by Texas Instruments. This device features a unipolar, 4-to-1 multiplexer (mux) input and includes a 16-bit capacitor-based successive approximation register (SAR) ADC with inherent sample and hold. 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 |
|---|---|
| Resolution | 16 Bits |
| Sample Rate (max) | 500 kSPS |
| Analog Voltage Supply (AVDD) | 2.7 V to 5.5 V |
| Digital Supply (VBD) | 1.65 V to VA |
| Input Type | Pseudo-Differential, Single-Ended |
| Input Channels | 4 (with 4-to-1 mux) |
| Operating Temperature Range | –40°C to 85°C |
| Package Type | VQFN (RGE) 24 pins |
| Power Consumption (Typical) | 14.2 mW (500 kSPS, VA = 2.7 V, VBD = 1.65 V) |
| Integral Non-Linearity (INL) | ±1.2 LSB Typical, ±2 LSB Maximum at 2.7 V |
| Differential Non-Linearity (DNL) | ±0.6 LSB Typical, –1/1.5 LSB Maximum at 2.7 V |
| Signal-to-Noise Ratio (SNR) | 91.5 dB |
| Spurious Free Dynamic Range (SFDR) | 101 dB |
| Total Harmonic Distortion (THD) | –100 dB |
Key Features
- Low-Power, Flexible Supply Range: 2.7 V to 5.5 V Analog Supply and 1.65 V to VA Digital Supply.
- High Sampling Rate: Up to 500 kSPS.
- Excellent DC Performance: ±1.2 LSB Typical, ±2 LSB Maximum INL and ±0.6 LSB Typical, –1/1.5 LSB Maximum DNL at 2.7 V.
- Excellent AC Performance: 91.5-dB SNR, 101-dB SFDR, and –100-dB THD at 5 V, fIN = 1 kHz.
- Flexible Analog Input Arrangement: On-Chip 4-/8-Channel Mux With Breakout, Auto/Manual Channel Select and Trigger.
- On-Chip Conversion Clock (CCLK), Software/Hardware Reset, Programmable Status/Polarity EOC/INT, Daisy-Chain Mode, and Global CONVST (Independent of CS).
- Deep, Nap, and Auto-NAP Powerdown Modes for power efficiency.
- SPI™/DSP Compatible Serial Interface with SCLK up to 40 MHz (VA = VBD = 5 V).
Applications
The ADS8331IBRGET is suitable for a variety of applications requiring high-speed, low-power analog-to-digital conversion. These include industrial automation, medical devices, data acquisition systems, and automotive systems. Its ability to operate over a wide temperature range and its low power consumption make it particularly useful in battery-powered devices and in environments where power efficiency is crucial.
Q & A
- What is the resolution of the ADS8331IBRGET? The resolution of the ADS8331IBRGET is 16 bits.
- What is the maximum sampling rate of the ADS8331IBRGET? The maximum sampling rate is 500 kSPS.
- What is the operating temperature range of the ADS8331IBRGET? The operating temperature range is –40°C to 85°C.
- What types of input channels does the ADS8331IBRGET support? The device supports pseudo-differential and single-ended inputs with a 4-to-1 multiplexer.
- What is the power consumption of the ADS8331IBRGET at 500 kSPS? The power consumption is typically 14.2 mW at 500 kSPS with VA = 2.7 V and VBD = 1.65 V.
- Does the ADS8331IBRGET support daisy-chain operation? Yes, it supports daisy-chain operation when multiple converters are used.
- What is the interface type of the ADS8331IBRGET? The device features an SPI™/DSP compatible serial interface.
- What are the powerdown modes available in the ADS8331IBRGET? The device has Deep, Nap, and Auto-NAP powerdown modes for power efficiency.
- What is the maximum clock speed for the serial interface? The SCLK can go up to 40 MHz when VA = VBD = 5 V.
- Is the ADS8331IBRGET available in different package types? Yes, it is available in 24-pin VQFN and 24-pin TSSOP packages.
