Overview
The ADS7844EB, produced by Texas Instruments, is a 12-bit, 8-channel serial output sampling analog-to-digital converter (ADC). This device is designed for high-speed and low-power applications, making it ideal for battery-operated systems, personal digital assistants, and various measurement equipment. The ADS7844EB operates on a single supply voltage ranging from 2.7V to 5V and features a synchronous serial interface for data communication. It is available in 20-lead QSOP and SSOP packages, ensuring versatility in design and implementation.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Number of Channels | 8 | - |
| Converter Resolution | 12-bit | - |
| Sampling Speed | Up to 200 kHz | ksps |
| Operating Voltage | 2.7V to 5V | V |
| Input Type | Single-ended or differential | - |
| Integral Nonlinearity (INL) | ±1 LSB | - |
| Differential Nonlinearity (DNL) | ±1 LSB | - |
| Signal-to-Noise and Distortion Ratio (SINAD) | 72 dB | dB |
| Interface | SPI (Synchronous Serial Interface) | - |
| Package | 20-lead QSOP, 20-lead SSOP | - |
| Operating Temperature | -40°C to +85°C | °C |
Key Features
- Low power consumption: Typical power dissipation of 3mW at 200kHz throughput rate and +5V supply.
- High-speed conversion: Up to 200kHz sampling rate.
- Flexible input configuration: Supports 8-channel single-ended or 4-channel differential inputs.
- No missing codes and high accuracy: ±1 LSB INL and DNL, ensuring high precision in measurements.
- Shutdown mode: Reduces power dissipation to under 1µW.
- Synchronous serial interface: Facilitates low-cost isolation for remote data acquisition.
Applications
- Data acquisition systems
- Test and measurement equipment
- Industrial process control
- Personal digital assistants
- Battery-powered systems and portable multichannel data loggers
Q & A
- What is the resolution of the ADS7844EB ADC? The ADS7844EB has a 12-bit resolution.
- How many channels does the ADS7844EB support? The ADS7844EB supports 8 channels, which can be configured as single-ended or differential inputs.
- What is the maximum sampling speed of the ADS7844EB? The maximum sampling speed is up to 200 kHz.
- What is the operating voltage range of the ADS7844EB? The operating voltage range is from 2.7V to 5V.
- What type of interface does the ADS7844EB use? The ADS7844EB uses a synchronous serial interface (SPI).
- What are the package options for the ADS7844EB? The ADS7844EB is available in 20-lead QSOP and 20-lead SSOP packages.
- What is the operating temperature range of the ADS7844EB? The operating temperature range is from -40°C to +85°C.
- How does the shutdown mode affect power consumption? The shutdown mode reduces power dissipation to under 1µW.
- What is the typical power dissipation of the ADS7844EB at 200kHz throughput rate? The typical power dissipation is 3mW at a +5V supply.
- What are some common applications of the ADS7844EB? Common applications include data acquisition, test and measurement, industrial process control, personal digital assistants, and battery-powered systems).
