Overview
The ADS7828E/250 is a single-supply, low-power, 12-bit data acquisition device produced by Texas Instruments. It features a serial I2C interface and an 8-channel multiplexer, making it ideal for applications requiring the A/D converter to be close to the input source in remote locations and for applications requiring isolation. The device includes a sample-and-hold amplifier and an internal, asynchronous clock. It is available in a TSSOP-16 package and operates within a voltage range of 2.7V to 5V, with an internal 2.5V reference voltage.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Power-Supply Voltage, +VDD | Specified Performance | 2.7 | - | 5.25 | V |
| Sampling Rate | - | - | 50 | - | kHz |
| Resolution | - | - | 12-bit | - | - |
| Quiescent Current (High Speed Mode) | SCL = 3.4MHz | 225 | - | 320 | µA |
| Quiescent Current (Fast Mode) | SCL = 400kHz | 100 | - | 100 | µA |
| Quiescent Current (Standard Mode) | SCL = 100kHz | 60 | - | 60 | µA |
| Power Dissipation (High Speed Mode) | SCL = 3.4MHz | 675 | - | 1000 | µW |
| Power Dissipation (Fast Mode) | SCL = 400kHz | 300 | - | 300 | µW |
| Power Dissipation (Standard Mode) | SCL = 100kHz | 180 | - | 180 | µW |
| Operating Temperature Range | - | -40 | - | 85 | °C |
Key Features
- 8-channel multiplexer
- 50kHz sampling rate
- No missing codes
- 2.7V to 5V operation
- Internal 2.5V reference voltage
- I2C interface supporting Standard, Fast, and High-Speed modes
- TSSOP-16 package
Applications
- Voltage-supply monitoring
- Isolated data acquisition
- Transducer interfaces
- Battery-operated systems
- Remote data acquisition
Q & A
- What is the resolution of the ADS7828E/250? The ADS7828E/250 has a 12-bit resolution.
- What is the sampling rate of the ADS7828E/250? The sampling rate is 50kHz.
- What is the operating voltage range of the ADS7828E/250? The operating voltage range is from 2.7V to 5V.
- Does the ADS7828E/250 have an internal reference voltage? Yes, it has an internal 2.5V reference voltage.
- What types of I2C modes does the ADS7828E/250 support? It supports Standard, Fast, and High-Speed I2C modes.
- What is the package type of the ADS7828E/250? It is available in a TSSOP-16 package.
- What are some common applications of the ADS7828E/250? Common applications include voltage-supply monitoring, isolated data acquisition, transducer interfaces, battery-operated systems, and remote data acquisition.
- What is the operating temperature range of the ADS7828E/250? The operating temperature range is from -40°C to 85°C.
- How many channels does the ADS7828E/250 have? It has an 8-channel multiplexer.
- Does the ADS7828E/250 have any power-down modes? Yes, it has power-down modes with very low current consumption.
