Overview
The ADS7825UB/1K, produced by Texas Instruments, is a high-performance, low-power 16-bit analog-to-digital converter (ADC) designed for a variety of industrial and commercial applications. This device features a four-channel input multiplexer, a sample-and-hold (S/H) circuit, an internal clock, and a reference, along with both parallel and serial microprocessor interfaces. It is notable for its single +5V supply operation, low power consumption, and high accuracy, making it suitable for applications requiring precise analog-to-digital conversion.
Key Specifications
| Specification | Value |
|---|---|
| Converter Type | Successive Approximation ADC |
| Number of Bits | 16 |
| Number of Analog Input Channels | 4 |
| Analog Input Voltage Range | ±10V |
| Conversion Time (Max) | 25µs |
| Supply Voltage (Nominal) | +5V |
| Supply Voltage Range | +4.75V to +5.25V |
| Power Dissipation (Max) | 50mW |
| Power Down Mode | 50µW |
| Operating Temperature Range | –40°C to +85°C |
| Package Type | 28-pin SOIC and 0.3" Plastic DIP |
| Output Format | Serial, Parallel, 2's Complement Binary |
| Linearity Error (Max) | ±2.0 LSB |
| Sample Rate | 40kHz |
Key Features
- Low power consumption: 50mW max and 50µW in power down mode.
- High accuracy: ±2.0 LSB max integral nonlinearity (INL).
- Single +5V supply operation.
- Pin-compatible with the 12-bit ADS7824.
- Parallel and serial data output options.
- Continuous conversion mode to sequentially digitize all four channels.
- Laser-trimmed scaling resistors for standard industrial ±10V input range and channel-to-channel matching of ±0.1%.
- Available in 28-pin SOIC and 0.3" Plastic DIP packages.
Applications
The ADS7825UB/1K is suitable for a wide range of applications, including industrial control systems, medical devices, data acquisition systems, and any environment where high-precision analog-to-digital conversion is required. Its low power consumption and high accuracy make it particularly useful in battery-powered devices and systems where energy efficiency is crucial.
Q & A
- What is the maximum conversion time of the ADS7825UB/1K?
The maximum conversion time is 25µs. - How many analog input channels does the ADS7825UB/1K have?
The device has four analog input channels. - What is the input voltage range of the ADS7825UB/1K?
The input voltage range is ±10V. - What are the available output formats for the ADS7825UB/1K?
The output formats are serial, parallel, and 2's complement binary. - What is the operating temperature range of the ADS7825UB/1K?
The operating temperature range is –40°C to +85°C. - What are the package options for the ADS7825UB/1K?
The device is available in 28-pin SOIC and 0.3" Plastic DIP packages. - What is the power consumption of the ADS7825UB/1K in normal operation?
The power consumption is 50mW max. - What is the power consumption in power down mode?
The power consumption in power down mode is 50µW. - Is the ADS7825UB/1K pin-compatible with other models?
Yes, it is pin-compatible with the 12-bit ADS7824. - Can the ADS7825UB/1K be configured for continuous conversion?
Yes, it can be configured in a continuous conversion mode to sequentially digitize all four channels.
