THC7984-17-B

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THC7984-17-B is a high-speed, high-precision, ultra-low power 12-bit CMOS analog-to-digital converter (ADC). It is specifically designed for industrial, instrumentation and remote sensing applications where high performance and low power dissipation is required. The THC7984-17-B is an ideal solution for measurement and control applications needing wide dynamic range and low noise.

The THC7984-17-B features a 12-bit resolution and 1.0/1.3 V reference voltage range. It also offers two different gain settings to adjust the input range and two differential analog input channels to allow easy combination of inputs from low and high-level signals. The full-scale range can be adjusted using the two different gains and the reference voltage range.

The THC7984-17-B features an internal self-calibrating architecture which eliminates the need for external components. A temperature coefficient calibration is provided to ensure accuracy at varying temperatures. It also includes an onboard analog-to-digital reference and a 10-bit bias trim. The full-scale range, reference voltage, and bias can be adjusted by setting trim pots.

The THC7984-17-B utilizes low power CMOS technology to minimize power requirements while still providing high resolution and wide dynamic range. The device employs an on-chip sample-and-hold circuit which allows input signals to be sampled on the rising edge of the clock, providing minimum conversion and settling times. The device also includes a low power shut-down mode for reduced power dissipation.

The analog-to-digital conversion process is achieved by successive approximation architecture. The process is initiated by setting the digital comparator to the mid-scale of the 12-bit converter, comparing it to the input signal, and then searching for the next bit in the opposite direction. This sequence is repeated until all 12 bits are defined and the analog-to-digital conversion is complete.

The THC7984-17-B also includes an output data latch which latches the converter, allowing for multiple external devices to read the conversion result without re-triggering the analog-to-digital conversion process. The analog-to-digital conversion can also be initiated by a hardware or software trigger.

To provide a reliable reference voltage to the THC7984-17-B, an external reference is recommended. However, the device is equipped with an internal reference as a backup. The device also features an offset and gain calibration. The offset can be adjusted manually using adjustments to the reference voltage input. The gain adjustment can be accomplished using either a hardware or a software trim option.

In summary, the THC7984-17-B is a high-speed, high-precision, ultra-low power 12-bit CMOS analog-to-digital converter (ADC). It features 12-bit resolution, adjustable reference voltage range, two-different gain settings, low power shut-down mode, on-chip sample-and-hold circuit, and an internal self-calibrating architecture. The analog-to-digital conversion process is achieved by successive approximation architecture and the device includes an output data latch and multiple external read/write options. The device is ideal for industrial, instrumentation, and remote sensing applications where power-efficiency, wide dynamic range, and low noise are required.

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