Overview
The ADS8331IPW is a low-power, 16-bit analog-to-digital converter (ADC) produced by Texas Instruments. This device features a 500-k samples-per-second (SPS) sampling rate and is designed with a unipolar, 4-to-1 multiplexer (mux) input. The ADS8331 uses a 16-bit capacitor-based successive approximation register (SAR) ADC with inherent sample and hold capabilities. It is available in a 24-pin TSSOP package and is fully specified for operation over the industrial temperature range of –40°C to 85°C.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Analog Supply Voltage | 2.7 V to 5.5 V | V |
| Sampling Rate | Up to 500 kSPS | SPS |
| Resolution | 16 Bits | Bits |
| Integral Linearity (INL) | ±1.2 LSB (Typical), ±2 LSB (Maximum) at 2.7 V | LSB |
| Differential Linearity (DNL) | ±0.6 LSB (Typical), –1/1.5 LSB (Maximum) at 2.7 V | LSB |
| Signal-to-Noise Ratio (SNR) | 91.5 dB at 5 V, fIN = 1 kHz | dB |
| Spurious Free Dynamic Range (SFDR) | 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 Type | 24-Pin TSSOP | - |
Key Features
- Low-power operation with flexible supply range (2.7 V to 5.5 V)
- 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
- Excellent AC performance: 91.5-dB SNR, 101-dB SFDR, –100-dB THD at 5 V, fIN = 1 kHz
- Flexible analog input arrangement with on-chip 4-/8-channel mux and breakout
- Auto/manual channel select and trigger
- On-chip conversion clock (CCLK), software/hardware reset, and programmable status/polarity EOC/INT
- Daisy-chain mode and global CONVST (independent of CS)
- Deep, nap, and auto-NAP powerdown modes
- SPI™/DSP compatible serial interface with separate I/O supply (1.65 V to VA)
- SCLK up to 40 MHz (VA = VBD = 5 V)
Applications
- Communications
- Transducer Interfaces
- Medical Instruments
- Magnetometers
- Industrial Process Controls
- Data Acquisition Systems
- Automatic Test Equipment
Q & A
- What is the sampling rate of the ADS8331IPW?
The ADS8331IPW has a sampling rate of up to 500 kSPS.
- What is the resolution of the ADS8331IPW?
The resolution of the ADS8331IPW is 16 bits.
- What is the operating temperature range of the ADS8331IPW?
The operating temperature range is –40°C to 85°C.
- What types of packages are available for the ADS8331?
The ADS8331 is available in 24-pin TSSOP and 24-pin VQFN packages.
- Does the ADS8331IPW support daisy-chain operation?
- What is the power consumption of the ADS8331IPW at 500 kSPS?
The power consumption is approximately 14.2 mW at 500 kSPS with VA = 2.7 V and VBD = 1.65 V.
- What is the signal-to-noise ratio (SNR) of the ADS8331IPW?
The SNR is 91.5 dB at 5 V, fIN = 1 kHz.
- Does the ADS8331IPW have built-in powerdown modes?
- What is the maximum SCLK frequency for the ADS8331IPW?
The maximum SCLK frequency is up to 40 MHz when VA = VBD = 5 V.
- Is the ADS8331IPW compatible with SPI and DSP interfaces?
