LTC1609CG#PBF

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When discussing data acquisition, analog to digital converters (ADCs) are essential for transforming analog signals into digital form for processing. The LTC1609CG#PBF is an advanced, 14-bit high speed successive approximation (SAR) ADC with buffered parallel output from Linear Technology, and is a popular choice for applications that require fast sampling rates, precision resolution, small size and low power dissipation.

The LTC1609CG#PBF combines small size, low power (75mW at 3V) and fast 2.4Msps throughput with several features that optimize mission-critical applications. It includes a 14-bit precision SAR ADC based on a charge-redistribution architecture with a fully differential input stage, along with an on-chip voltage reference with wide dynamic range and an integrated switched-capacitor voltage buffer. In addition, the LTC1609CG#PBF offers static power consumption of just 190mW.

Apart from its 14-bit accuracy and fast 2.4Msps throughput, the LTC1609CG#PBF also provides excellent performance at 0.5Msps, making it suitable for many “slow-speed” applications. Moreover, its low power consumption makes it ideal for portable applications, such as medical and consumer products targeting consumer battery-operated systems. In addition, its low power consumption also decreases thermal galvanic energy dissipation for applications with limited space.

In terms of operation, the LTC1609CG#PBF is engineered for very low power operation, boasting 78dB signal-to-noise ratio (SNR) and -101dB total harmonic distortion (THD) over the input frequency range from 0.5 to 2.4Msps. Furthermore, its wide power supply range makes it suitable for a variety of applications. Specifically, the device operates on supplies from 2.7V to 5.5V; at 3.3V, the device utilizes just 75mW while offering a maximum of 17mW dissipation at 1Msps.

As far as interfacing is concerned, the LTC1609CG#PBF is capable of driving large loads due to its buffered parallel outputs and settling times of less than 150ns. This makes the device ideal for applications that require fast response to data acquisition. As part of the package, the device also includes CPU-compatible serial interface, allowing for easy interfacing with a host processor or ASIC. For system protection, the LTC1609CG#PBF features an on-chip watchdog timer and voltage protection circuitries.

To summarize, the LTC1609CG#PBF is a high performance, low power SAR ADC from Linear Technology, providing 14-bit accuracy and fast 2.4Msps throughput. Its low power consumption, wide power supply range, integrated buffered parallel outputs, on-chip voltage reference, and CPU-compatible serial interface make the LTC1609CG#PBF a popular choice for many mission-critical applications, such as medical and consumer products.

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