PCM1808PWR Integrated Circuits (ICs)

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PCM1808PWR is a low power 16-bit, 5-bit, 4-channel pad-based Analog-to-Digital Converter (ADC) from Texas Instruments. It is designed to meet the demands of the automotive market, with low power operation, wide temperature range and high accuracy performance.

Application Field

The PCM1808PWR is ideal for data acquisition applications where high precision and low noise performance is desired. The PCM1808PWR can be used in numerous automotive applications, such as starter motor control, engine control and airbag system monitoring.

The PCM1808PWR has a wide dynamic range and high input impedance, making it suitable for a variety of applications. It can be used for automotive audio systems, instrumentation and medical instruments. In addition, the PCM1808PWR can be used in wireless communications and automotive electronics.

Working Principle

The PCM1808PWR is a high-speed ADC which utilizes a reference-based successive approximation register (SAR) architecture to convert analog inputs to digital output. It contains two sub-ADCs referred to as lower and upper ADCs. The lower ADC is a 16-bit, 5-bit resolution ADC while the upper ADC is a 16-bit, 4-bit resolution (1.5 LSB) ADC.

The PCM1808PWR works by first amplifying the input signal to be within the ADC’s linear range and then applying the signal to the SAR core. The SAR core is responsible for comparing the input signal to the reference voltage and outputting a digital equivalent. The PCM1808PWR will then convert the analog input into its digital equivalent.

The PCM1808PWR supports single-ended input mode, which allows it to operate at lower frequencies. It also supports fully differential input mode, allowing the device to operate at higher frequencies. The ADC offers a high-speed 4-MSPS conversion rate, with a signal-to-noise ratio of 90dB and a maximum power consumption of less than 500 mW.

The PCM1808PWR has excellent performance and dynamic range in comparison to other ADCs in the same class. It is capable of delivering 0.75 LSB linearity error, 2 LSB max INL and 1 LSB offset error. Additionally, the device supports a temperature range of 0-125C and is compliant with both LVDS and I2C digital interface standards.

Overall, the PCM1808PWR is an ideal choice for high-precision data acquisition applications that demand high accuracy and performance. Its wide temperature range and low power consumption make it suitable for various automotive applications, such as engine control, starter motor control, medical instrumentation and audio systems.

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