Overview
The ADS8320E/2K5 from Texas Instruments is a 16-bit, high-speed, sampling analog-to-digital converter (A/D) designed for low-power and high-performance applications. This device operates over a supply range of 2.7V to 5.25V and is capable of converting analog signals at a rate of up to 100,000 samples per second. The ADS8320E/2K5 is built on a 0.6µm CMOS process and utilizes a successive approximation register (SAR) architecture with a capacitive redistribution technique, which includes an inherent sample and hold function. This converter is highly efficient, consuming less than 4.5 mW from the power supply at full data rate, and it can spend most of its time in power-down mode at lower data rates, reducing average power dissipation to less than 100 µW at a 10 kHz data rate.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Number of Bits | 16 | |
| Sampling Rate | 100 kHz | |
| Supply Voltage Range | 2.7 V to 5.25 V | |
| Input Type | Pseudo-Differential, Single Ended | |
| Data Interface | SPI/SSI compatible | |
| Architecture | SAR (Successive Approximation Register) | |
| Reference Type | External (500 mV to VCC) | |
| Operating Temperature | -40°C to 85°C | |
| Package | 8-VSSOP, 8-MSOP (0.118", 3.00mm Width) | |
| Average Power Dissipation at 10 kHz | < 100 µW | |
| Maximum Current Drain | 3 µA (Maximum) |
Key Features
- Ultra-low power consumption, with average power dissipation less than 100 µW at 10 kHz data rate.
- High-speed operation, capable of 100,000 conversions per second.
- Synchronous serial (SPI/SSI compatible) interface for data transfer.
- Differential input and external reference voltage adjustable between 500 mV and VCC.
- Compact 8-pin VSSOP or MSOP package, ideal for space-constrained applications.
- Pin-compatible with ADS7816 and ADS7822.
- High accuracy with low total harmonic distortion (THD) and high signal-to-noise ratio (SNR).
Applications
- Battery-operated systems due to its ultra-low power consumption.
- Remote data acquisition modules.
- Simultaneous multi-channel systems.
- Isolated data acquisition.
- Industrial controls.
- Robotics.
- Vibration analysis.
Q & A
- What is the resolution of the ADS8320E/2K5?
The ADS8320E/2K5 has a 16-bit resolution.
- What is the maximum sampling rate of the ADS8320E/2K5?
The maximum sampling rate is 100 kHz.
- What is the supply voltage range for the ADS8320E/2K5?
The supply voltage range is from 2.7 V to 5.25 V.
- What type of interface does the ADS8320E/2K5 use for data transfer?
The device uses a synchronous serial (SPI/SSI compatible) interface.
- What is the input type of the ADS8320E/2K5?
The input type is pseudo-differential or single-ended.
- How does the ADS8320E/2K5 manage power consumption?
The device spends most of its time in power-down mode at lower data rates, reducing average power dissipation.
- What is the operating temperature range of the ADS8320E/2K5?
The operating temperature range is from -40°C to 85°C.
- What package options are available for the ADS8320E/2K5?
The device is available in 8-VSSOP and 8-MSOP packages.
- Is the ADS8320E/2K5 suitable for battery-operated systems?
Yes, it is highly suitable due to its ultra-low power consumption.
- What are some common applications of the ADS8320E/2K5?
Common applications include remote data acquisition, simultaneous multi-channel systems, isolated data acquisition, industrial controls, robotics, and vibration analysis.
