Overview
The ADS8320E/250G4, produced by Texas Instruments, is a 16-bit, high-speed, microPower sampling analog-to-digital (A/D) converter. This device operates over a supply range of 2.7 V to 5.25 V and is designed for low power consumption, making it ideal for battery-operated and portable systems. The ADS8320E features a successive approximation register (SAR) architecture based on capacitive redistribution, which includes a sample and hold function. It is fabricated on a 0.6µm CMOS process, enabling it to acquire and convert analog signals at up to 100,000 conversions per second while consuming less than 4.5 mW from the power source.
Key Specifications
| Parameter | Min | Max | Unit | |
|---|---|---|---|---|
| Resolution | 16 | - | - | Bits |
| Supply Voltage (VCC) | 2.7 | - | 5.25 | V |
| Sampling Rate | - | - | 100 | kHz |
| Power Consumption at 100 kHz and 2.7 V | - | 1.8 | - | mW |
| Power Consumption at 10 kHz and 2.7 V | - | 0.3 | - | mW |
| Power Down Current | - | - | 3 | µA |
| Package | - | - | - | 8-Pin VSSOP |
| Reference Voltage Range | 0.5 VCC | - | VCC | V |
| Integral Linearity Error (VCC = 5 V) | ±0.008% | - | ±0.018% | FSR |
| Offset Error (VCC = 5 V) | ±1 | - | ±2 | mV |
| Gain Error (VCC = 5 V) | ±0.05% | - | - | FSR |
| Noise (VCC = 5 V) | - | 20 | - | µVrms |
Key Features
- High-speed sampling at up to 100 kHz
- Low power consumption: 1.8 mW at 100 kHz and 2.7 V, 0.3 mW at 10 kHz and 2.7 V
- Ultra-low power-down current of 3 µA
- 8-Pin VSSOP package
- Pin-compatible with ADS7816 and ADS7822
- Synchronous serial (SPI/SSI compatible) interface
- Differential input with reference voltage range from 0.5 VCC to VCC
- No missing codes, high accuracy with integral linearity error of ±0.008% FSR
Applications
- Battery-operated systems
- Remote data acquisition
- Isolated data acquisition
- Simultaneous sampling, multichannel systems
- Industrial controls
- Robotics
- Vibration analysis
Q & A
- What is the resolution of the ADS8320E?
The ADS8320E has a resolution of 16 bits. - What is the operating supply voltage range of the ADS8320E?
The operating supply voltage range is from 2.7 V to 5.25 V. - What is the maximum sampling rate of the ADS8320E?
The maximum sampling rate is up to 100 kHz. - How much power does the ADS8320E consume at 100 kHz and 2.7 V?
The power consumption is approximately 1.8 mW at 100 kHz and 2.7 V. - What is the power-down current of the ADS8320E?
The power-down current is 3 µA. - What type of package is the ADS8320E available in?
The ADS8320E is available in an 8-Pin VSSOP package. - Is the ADS8320E pin-compatible with other models?
Yes, it is pin-compatible with ADS7816 and ADS7822. - What type of interface does the ADS8320E use?
The ADS8320E uses a synchronous serial (SPI/SSI compatible) interface. - What is the range for the reference voltage of the ADS8320E?
The reference voltage range is from 0.5 VCC to VCC. - What are some typical applications of the ADS8320E?
Typical applications include battery-operated systems, remote data acquisition, isolated data acquisition, simultaneous sampling in multichannel systems, industrial controls, robotics, and vibration analysis.
