Overview
The ADS7816E/250 is a 12-bit, high-speed, micropower sampling analog-to-digital converter (ADC) produced by Texas Instruments. This device is designed for low power operation and features automatic power down, making it ideal for battery-operated systems and applications requiring remote or isolated data acquisition. The ADS7816E/250 operates with a synchronous serial interface and supports differential input signals. It is fabricated on a 0.6µ CMOS process, enabling high-speed conversions of up to 200,000 samples per second while consuming minimal power.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 12 bits |
| Sample Rate (max) | 200 kHz |
| Input Type | Pseudo-Differential, Single-Ended |
| Interface | Serial (3-Wire, SPI) |
| Analog Voltage AVDD (Max) | 5.25 V |
| Analog Voltage AVDD (Min) | 4.5 V |
| Digital Supply (Max) | 5.25 V |
| Digital Supply (Min) | 4.5 V |
| Power Consumption (Typ) | 1.9 mW at 200 kHz |
| Operating Temperature Range | -40 to 85°C |
| Package Type | VSSOP (DGK), 8-pin |
| Reference Mode | External |
| INL (Max) | 2 +/- LSB |
| SINAD | 72 dB |
| THD (Typ) | -84 dB |
Key Features
- High-speed sampling rate of up to 200 kHz
- Low power consumption: 1.9 mW at 200 kHz and 150 µW at 12.5 kHz
- Automatic power down: 3 µA max
- Differential input with pseudo-differential and single-ended capabilities
- Synchronous serial interface (3-Wire, SPI)
- External reference voltage adjustable from 100 mV to VCC
- Available in 8-pin mini-DIP, SOIC, and MSOP packages
Applications
- Battery-operated systems
- Remote data acquisition
- Isolated data acquisition
- Systems requiring simultaneous acquisition of multiple signals
Q & A
- Q: What is the resolution of the ADS7816E/250?
A: The resolution of the ADS7816E/250 is 12 bits.
- Q: What is the maximum sampling rate of the ADS7816E/250?
A: The maximum sampling rate is 200 kHz.
- Q: What types of input signals does the ADS7816E/250 support?
A: The ADS7816E/250 supports pseudo-differential and single-ended input signals.
- Q: What is the power consumption of the ADS7816E/250 at 200 kHz?
A: The power consumption is typically 1.9 mW at 200 kHz.
- Q: What is the operating temperature range of the ADS7816E/250?
A: The operating temperature range is -40 to 85°C.
- Q: What package types are available for the ADS7816E/250?
A: The ADS7816E/250 is available in 8-pin mini-DIP, SOIC, and MSOP packages.
- Q: Can the reference voltage be adjusted on the ADS7816E/250?
A: Yes, the reference voltage can be adjusted from 100 mV to VCC.
- Q: What is the typical THD (Total Harmonic Distortion) of the ADS7816E/250?
A: The typical THD is -84 dB.
- Q: Is the ADS7816E/250 suitable for battery-operated systems?
A: Yes, it is ideal for battery-operated systems due to its low power consumption and automatic power down feature.
- Q: What is the SINAD (Signal-to-Noise and Distortion Ratio) of the ADS7816E/250?
A: The SINAD is 72 dB.
