Overview
The ADS7841E/2K5G4, produced by Texas Instruments, is a 4-channel, 12-bit sampling Analog-to-Digital Converter (ADC) with a synchronous serial interface. This device is designed for high precision and low power consumption, making it ideal for various applications including data acquisition, test and measurement, industrial process control, and battery-powered systems. The ADS7841 operates on a single supply voltage ranging from 2.7V to 5V and features a programmable resolution of either 8 bits or 12 bits. It includes a built-in multiplexer and a sample-and-hold function, and it is available in DIP-16 and SSOP-16 packages.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 12 bits (programmable to 8 bits) |
| Number of Channels | 4 (single-ended or 2 differential) |
| Conversion Rate | Up to 200 kHz |
| Supply Voltage | 2.7V to 5V |
| Power Dissipation | Typical 2 mW at 200 kHz and +5V supply |
| Integral Linearity Error (INL) | ±1 LSB |
| Differential Linearity Error (DNL) | ±1 LSB |
| SINAD | 72 dB |
| Operating Temperature Range | –40°C to +125°C |
| Package | DIP-16 or SSOP-16 |
Key Features
- Single supply operation: 2.7V to 5V
- 4-channel single-ended or 2-channel differential input
- Up to 200 kHz conversion rate
- No missing codes
- Low power dissipation: typical 2 mW at 200 kHz and +5V supply
- Shutdown mode reducing power to under 15 µW
- Serial interface for low-cost isolation in remote data acquisition
- Programmable resolution: 8 bits or 12 bits
- Built-in multiplexer and sample-and-hold function
Applications
- Data acquisition
- Test and measurement
- Industrial process control
- Personal digital assistants
- Battery-powered systems
- Portable multi-channel data loggers and measurement equipment
Q & A
- What is the resolution of the ADS7841E/2K5G4? The resolution is programmable to either 8 bits or 12 bits.
- How many channels does the ADS7841E/2K5G4 have? It has 4 channels, which can be configured as single-ended or 2 differential channels.
- What is the maximum conversion rate of the ADS7841E/2K5G4? The maximum conversion rate is up to 200 kHz.
- What is the supply voltage range for the ADS7841E/2K5G4? The supply voltage range is from 2.7V to 5V.
- What is the typical power dissipation of the ADS7841E/2K5G4 at 200 kHz and +5V supply? The typical power dissipation is 2 mW.
- Does the ADS7841E/2K5G4 have a shutdown mode? Yes, it has a shutdown mode that reduces power dissipation to under 15 µW.
- What type of interface does the ADS7841E/2K5G4 use? It uses a synchronous serial interface.
- What are the package options for the ADS7841E/2K5G4? It is available in DIP-16 and SSOP-16 packages.
- What is the operating temperature range of the ADS7841E/2K5G4? The operating temperature range is from –40°C to +125°C.
- What are some typical applications of the ADS7841E/2K5G4? Typical applications include data acquisition, test and measurement, industrial process control, personal digital assistants, and battery-powered systems.
