Overview
The Texas Instruments ADS7822U/2K5 is a 12-bit sampling analog-to-digital (A/D) converter designed for low-power and high-speed applications. It operates over a wide supply range of 2.7V to 5.25V, making it versatile for various systems. The device features a pseudo-differential input and a synchronous serial interface, which enhances its usability in different data acquisition scenarios. Its ultra-low power consumption and small size make it ideal for battery-operated systems, remote data acquisition modules, and isolated data acquisition systems.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Resolution | 12 bits |
| Number of Channels | 1 Channel |
| Sampling Rate | 200 kS/s |
| Input Type | Pseudo-Differential/Single-Ended |
| Architecture | SAR (Successive Approximation Register) |
| Analog Supply Voltage | 2.7 V to 5.25 V |
| Digital Supply Voltage | 4.75 V to 5.25 V |
| Operating Temperature | -40°C to +85°C |
| Interface Type | 3-Wire SPI |
| Power Consumption | 1.6 mW at 200kHz, 0.54 mW at 75kHz, 0.06 mW at 7.5kHz |
| Power Down Current | 3µA max |
| Package | SOIC-8, Mini-DIP-8, MSOP-8 |
| DNL (Differential Nonlinearity) | ±2 LSB |
| INL (Integral Nonlinearity) | ±2 LSB |
Key Features
- High-speed sampling rate of 200kHz
- Ultra-low power consumption: 1.6mW at 200kHz, 0.54mW at 75kHz, and 0.06mW at 7.5kHz
- Power-down mode with a current of 3µA max
- Pseudo-differential input and single-ended input capability
- Synchronous serial interface (SPI)
- Reference voltage can be set to any level within 50mV to VCC
- Available in SOIC-8, Mini-DIP-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 ADS7822U/2K5? The resolution is 12 bits.
- What is the sampling rate of the ADS7822U/2K5? The sampling rate is 200 kS/s.
- What is the operating voltage range of the ADS7822U/2K5? The operating voltage range is 2.7V to 5.25V.
- What type of input does the ADS7822U/2K5 support? It supports pseudo-differential and single-ended inputs.
- What is the power consumption of the ADS7822U/2K5 at 200kHz? The power consumption is 1.6mW at 200kHz.
- What is the power-down current of the ADS7822U/2K5? The power-down current is 3µA max.
- In what packages is the ADS7822U/2K5 available? It is available in SOIC-8, Mini-DIP-8, and MSOP-8 packages.
- What is the operating temperature range of the ADS7822U/2K5? The operating temperature range is -40°C to +85°C.
- What type of interface does the ADS7822U/2K5 use? It uses a 3-Wire SPI interface.
- What are some typical applications of the ADS7822U/2K5? Typical applications include battery-operated systems, remote data acquisition modules, isolated data acquisition systems, and simultaneous sampling, multichannel systems.
