Overview
The ADS7822UB/2K5 is a 12-bit, high-speed, microPower sampling analog-to-digital converter (ADC) produced by Texas Instruments. This device is designed for low power consumption and high performance, making it ideal for battery-operated systems, remote data acquisition, and simultaneous multichannel systems. The ADS7822UB/2K5 operates over a supply range of 2.7V to 5.25V and can sample at rates up to 200kHz while consuming very little power, typically 1.6mW at 200kHz. It features a pseudo-differential input, a synchronous serial interface, and a power-down mode to minimize power dissipation.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 12 | Bits |
| Sampling Rate | Up to 200kHz | |
| Supply Voltage Range | 2.7V to 5.25V | V |
| Power Consumption at 200kHz | 1.6mW | mW |
| Power Consumption at 7.5kHz | 0.06mW | mW |
| Power Down Current | 3μA max | μA |
| Integral Linearity Error | -2 to +2 LSB | LSB |
| Differential Linearity Error | ±0.8 LSB | LSB |
| Reference Voltage Range | 50mV to VCC | V |
| Input Capacitance | 25 pF | pF |
| Operating Temperature Range | -40°C to +85°C | °C |
| Package Options | Mini-DIP-8, SO-8, MSOP-8 |
Key Features
- Pseudo-Differential Input: Allows for differential input signals with the –In input not resampled later in the conversion cycle.
- Synchronous Serial Interface: Communicates with microprocessors and other digital systems via a 3-wire serial interface.
- Low Power Consumption: Operates at very low power, especially in power-down mode, making it suitable for battery-operated systems.
- High Speed: Samples at rates up to 200kHz.
- Flexible Reference Voltage: Can be set to any level within the range of 50mV to VCC.
- Small Size: Available in mini-DIP-8, SO-8, and MSOP-8 packages.
Applications
- Battery-Operated Systems: Ideal due to its ultra-low power consumption and small size.
- Remote Data Acquisition: Suitable for remote data-acquisition modules.
- Simultaneous Multichannel Systems: Can be used in systems requiring simultaneous sampling of multiple channels.
- Isolated Data Acquisition: Appropriate for isolated data acquisition applications.
Q & A
- What is the resolution of the ADS7822UB/2K5 ADC?
The resolution of the ADS7822UB/2K5 is 12 bits.
- What is the maximum sampling rate of the ADS7822UB/2K5?
The maximum sampling rate is up to 200kHz.
- What is the supply voltage range for the ADS7822UB/2K5?
The supply voltage range is from 2.7V to 5.25V.
- How much power does the ADS7822UB/2K5 consume at 200kHz?
It consumes approximately 1.6mW at 200kHz.
- What is the power-down current of the ADS7822UB/2K5?
The power-down current is 3μA max.
- What is the range of the reference voltage for the ADS7822UB/2K5?
The reference voltage can be set to any level within the range of 50mV to VCC.
- What types of packages are available for the ADS7822UB/2K5?
It is available in mini-DIP-8, SO-8, and MSOP-8 packages.
- What is the operating temperature range of the ADS7822UB/2K5?
The operating temperature range is from -40°C to +85°C.
- What kind of input does the ADS7822UB/2K5 support?
The ADS7822UB/2K5 supports a pseudo-differential input.
- How does the ADS7822UB/2K5 communicate with other digital systems?
It communicates via a synchronous 3-wire serial interface.
