Overview
The ADS8331IBRGER 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 incorporates a 16-bit capacitor-based successive approximation register (SAR) ADC with inherent sample and hold capabilities. It is available in 24-pin VQFN and TSSOP packages and is fully specified for operation over the industrial temperature range of –40°C to 85°C.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Number of Bits | 16 | |
| Sampling Rate | Up to 500 kSPS | |
| Analog Supply Voltage | 2.7 V to 5.5 V | V |
| Digital Interface Supply Voltage | 1.65 V to VA | V |
| Operating Temperature Range | –40°C to 85°C | °C |
| Package Type | 24-Pin VQFN (RGE) and 24-Pin TSSOP | |
| Input Type | Pseudo-Differential, Single Ended | |
| 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 |
Key Features
- Low-power consumption: 8.7 mW at 250 kSPS and 14.2 mW at 500 kSPS (VA = 2.7 V, VBD = 1.65 V).
- Flexible supply range: 2.7 V to 5.5 V analog supply and 1.65 V to VA digital interface supply.
- 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.
- High-speed serial interface: SPI™/DSP compatible with SCLK up to 40 MHz (VA = VBD = 5 V).
- On-chip 4-/8-channel multiplexer with breakout, auto/manual channel select, and trigger.
- Powerdown modes: Deep, Nap, and Auto-NAP modes for power management.
- Daisy-chain mode for multiple converter operation).
- Programmable status/polarity EOC/INT and global CONVST (independent of CS)).
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 ADS8331IBRGER?
The ADS8331IBRGER has a sampling rate of up to 500 kSPS.
- What is the operating temperature range of the ADS8331IBRGER?
The operating temperature range is –40°C to 85°C.
- What types of packages are available for the ADS8331IBRGER?
The device is available in 24-pin VQFN (RGE) and 24-pin TSSOP packages.
- What is the analog supply voltage range for the ADS8331IBRGER?
The analog supply voltage range is 2.7 V to 5.5 V.
- Does the ADS8331IBRGER support daisy-chain operation?
- What is the power consumption of the ADS8331IBRGER at 500 kSPS?
The power consumption is approximately 14.2 mW at 500 kSPS (VA = 2.7 V, VBD = 1.65 V).
- What are the key DC performance metrics of the ADS8331IBRGER?
The device has an INL of ±1.2 LSB typical, ±2 LSB maximum, and a DNL of ±0.6 LSB typical, –1/1.5 LSB maximum at 2.7 V.
- What is the signal-to-noise ratio (SNR) of the ADS8331IBRGER at 5 V and 1 kHz input frequency?
The SNR is 91.5 dB at 5 V and 1 kHz input frequency.
- Does the ADS8331IBRGER have powerdown modes?
- What is the maximum SCLK frequency for the serial interface of the ADS8331IBRGER?
The maximum SCLK frequency is up to 40 MHz (VA = VBD = 5 V).
