Overview
The ADS7822UB is a 12-bit sampling analog-to-digital (A/D) converter produced by Texas Instruments. This device is renowned for its ultra-low power consumption and high-speed conversion capabilities, making it ideal for a variety of applications, particularly those requiring minimal power usage. The ADS7822UB operates over a supply range of 2.7V to 5.25V and can sample analog signals at rates up to 200kHz. Its low power dissipation, even at full sampling rates, and the ability to spend most of its time in power-down mode at lower conversion rates, make it highly efficient. The device features a pseudo-differential input, a synchronous serial interface, and the flexibility to set the reference voltage within a range of 50mV to VCC.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 12 bits |
| Sampling Rate | Up to 200kHz |
| Power Consumption | 1.6mW at 200kHz, 0.54mW at 75kHz, 0.06mW at 7.5kHz |
| Power Down Current | 3µA max |
| Supply Voltage Range | 2.7V to 5.25V |
| Operating Temperature Range | -40°C to 85°C |
| Package Types | Mini-DIP-8, SO-8, MSOP-8 |
| Input Type | Pseudo-Differential |
| Interface | Synchronous Serial Interface |
Key Features
- High-speed sampling rate of up to 200kHz
- Ultra-low power consumption: 1.6mW at 200kHz, 0.54mW at 75kHz, and 0.06mW at 7.5kHz
- Low power-down current of 3µA max
- Pseudo-differential input
- Synchronous serial interface
- Flexible reference voltage setting between 50mV and VCC
- Available in mini-DIP-8, SO-8, and MSOP-8 packages
Applications
- Battery-operated systems
- Remote data acquisition modules
- Isolated data acquisition systems
- Simultaneous sampling, multichannel systems
Q & A
- What is the resolution of the ADS7822UB?
The ADS7822UB has a resolution of 12 bits.
- What is the maximum sampling rate of the ADS7822UB?
The maximum sampling rate is up to 200kHz.
- How much power does the ADS7822UB consume at 200kHz sampling rate?
The power consumption at 200kHz is 1.6mW.
- What is the power-down current of the ADS7822UB?
The power-down current is 3µA max.
- What is the operating temperature range of the ADS7822UB?
The operating temperature range is -40°C to 85°C.
- What types of packages are available for the ADS7822UB?
The device is available in mini-DIP-8, SO-8, and MSOP-8 packages.
- What type of input does the ADS7822UB have?
The ADS7822UB has a pseudo-differential input.
- What kind of interface does the ADS7822UB use?
The device uses a synchronous serial interface.
- What is the range for setting the reference voltage on the ADS7822UB?
The reference voltage can be set to any level within the range of 50mV to VCC.
- What are some typical applications of the ADS7822UB?
Typical applications include battery-operated systems, remote data acquisition modules, isolated data acquisition systems, and simultaneous sampling, multichannel systems.
