Overview
The ADS7844EBG4 is a high-performance, 12-bit analog-to-digital converter (ADC) produced by Texas Instruments. This component is designed to provide accurate and efficient analog-to-digital conversion with a variety of input configurations. It features an 8-channel single-ended or 4-channel differential input setup, making it versatile for various applications. The ADS7844EBG4 operates with a synchronous serial interface and is available in a 20-lead SSOP package, ensuring compact and reliable integration into different systems.
Key Specifications
| Specification | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Part Number | ADS7844EBG4 |
| Number of Bits | 12 |
| Sampling Rate | 200 kS/s |
| Number of Inputs | 4 (differential) / 8 (single-ended) |
| Input Type | Differential, Single-Ended |
| Data Interface | SPI |
| Architecture | SAR (Successive Approximation Register) |
| Reference Type | External |
| Analog Supply Voltage | 2.7V ~ 3.6V, 5V |
| Digital Supply Voltage | 1.9V ~ 5.5V |
| Operating Temperature | -40°C ~ 85°C |
| Package / Case | 20-SSOP (0.154" | 3.90mm Width) |
| Mounting Type | Surface Mount |
| Power Dissipation | Typically 3mW at 200kHz |
| RoHS Status | ROHS3 Compliant |
Key Features
- High Resolution: 12-bit resolution ensures accurate measurements.
- Multi-Channel Input: Supports 8 single-ended or 4 differential inputs.
- High-Speed Conversion: Up to 200kHz conversion rate.
- Low Power Consumption: Typical power dissipation of 3mW at 200kHz.
- Serial Interface: SPI interface for efficient data transfer.
- Compact Packaging: Available in 20-lead SSOP package.
- Wide Operating Range: Operates from -40°C to 85°C.
- High Accuracy: ±1 LSB max INL and DNL, no missing codes.
- Shutdown Mode: Reduces power dissipation to under 1µW.
Applications
- Data Acquisition: Ideal for data logging and measurement systems.
- Test and Measurement: Suitable for various test and measurement equipment.
- Industrial Process Control: Used in industrial automation and control systems.
- Personal Digital Assistants: Suitable for battery-operated devices like PDAs.
- Battery-Powered Systems: Low power consumption makes it ideal for portable devices.
Q & A
- What is the resolution of the ADS7844EBG4 ADC?
The ADS7844EBG4 has a 12-bit resolution.
- How many input channels does the ADS7844EBG4 support?
The ADS7844EBG4 supports 8 single-ended or 4 differential input channels.
- What is the sampling rate of the ADS7844EBG4?
The sampling rate is up to 200 kS/s.
- What type of data interface does the ADS7844EBG4 use?
The ADS7844EBG4 uses a SPI (Serial Peripheral Interface) data interface.
- What is the operating temperature range of the ADS7844EBG4?
The operating temperature range is -40°C to 85°C.
- What is the typical power dissipation of the ADS7844EBG4?
The typical power dissipation is 3mW at a 200kHz throughput rate.
- Is the ADS7844EBG4 RoHS compliant?
Yes, the ADS7844EBG4 is ROHS3 compliant.
- What is the package type of the ADS7844EBG4?
The package type is 20-lead SSOP (0.154" | 3.90mm Width).
- Does the ADS7844EBG4 have a shutdown mode?
Yes, the ADS7844EBG4 has a shutdown mode that reduces power dissipation to under 1µW.
- What are some common applications of the ADS7844EBG4?
Common applications include data acquisition, test and measurement, industrial process control, personal digital assistants, and battery-powered systems.
