Overview
The ADS7816U, produced by Texas Instruments, is a 12-bit, high-speed, micro-power sampling analog-to-digital converter (ADC). This device is part of the ADS7816 series and is known for its low power operation and high sampling rate. The ADS7816U utilizes a successive approximation register (SAR) architecture, which includes a sample/hold function, allowing it to acquire and convert analog signals at up to 200,000 conversions per second. It operates on a single +5V power source and requires an external reference voltage and clock signal.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Resolution | 12 | 12 | 12 | Bits |
| No Missing Codes | 11 | 12 | 12 | Bits |
| Integral Linearity Error | ±0.5 | ±2 | ±2 | LSB |
| Differential Linearity Error | ±0.5 | ±2 | ±1 | LSB |
| Offset Error | ±4 | ±4 | ±4 | LSB |
| Gain Error | ±4 | ±4 | ±4 | LSB |
| Noise | 33 | |||
| Sampling Rate | 200kHz | |||
| Input Type | Differential | |||
| Reference Type | External | |||
| Voltage - Supply, Analog | 5V | |||
| Voltage - Supply, Digital | 5V | |||
| Operating Temperature | -40°C | 85°C | ||
| Package / Case | 8-SOIC (0.154", 3.90mm Width) |
Key Features
- Low Power Operation: The ADS7816U features automatic power down, reducing power consumption when not in use.
- High Sampling Rate: Capable of sampling at up to 200,000 conversions per second.
- Differential Input: Allows for differential input signals, enhancing noise immunity and signal quality.
- External Reference: The reference voltage can be varied from 100mV to 5V, allowing for flexible input range settings.
- Synchronous Serial Interface: Data is clocked out serially, most significant bit first, via the DOUT pin.
- Sample/Hold Function: Integrated sample/hold function as part of the SAR architecture.
- Low Noise and High Accuracy: Features low integral and differential linearity errors, ensuring high accuracy in conversions.
Applications
The ADS7816U is suitable for a variety of applications requiring high-speed, low-power analog-to-digital conversion. These include:
- Data Acquisition Systems: Ideal for systems that require fast and accurate conversion of analog signals to digital data.
- Industrial Automation: Used in control systems, monitoring, and automation where precise and rapid data conversion is necessary.
- Medical Devices: Suitable for medical equipment that requires high accuracy and low power consumption.
- Aerospace and Defense: Used in various military and aerospace applications where reliability, accuracy, and low power are critical.
Q & A
- What is the resolution of the ADS7816U? The ADS7816U has a resolution of 12 bits.
- What is the maximum sampling rate of the ADS7816U? The maximum sampling rate is 200,000 conversions per second.
- What type of input does the ADS7816U support? The ADS7816U supports differential input signals.
- What is the range of the external reference voltage for the ADS7816U? The external reference voltage can be varied from 100mV to 5V.
- How does the ADS7816U manage power consumption? The ADS7816U features automatic power down to reduce power consumption when not in use.
- What is the operating temperature range of the ADS7816U? The operating temperature range is from -40°C to 85°C.
- What is the package type of the ADS7816U? The ADS7816U is available in an 8-SOIC package.
- Does the ADS7816U have an integrated sample/hold function? Yes, the ADS7816U includes a sample/hold function as part of its SAR architecture.
- How is data output from the ADS7816U? Data is clocked out serially, most significant bit first, via the DOUT pin.
- Is the ADS7816U RoHS compliant? Yes, the ADS7816U is lead-free and RoHS compliant by exemption.
