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双14位80/125MSPS的串行LVDS 1.8V模数转换器ad9645数据表
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The AD9645 is a dual， 14-bit， 80 MSPS/125 MSPS analog-todigital converter （ADC） with an on-chip sample-and-hold circuit designed for low cost， low power， small size， and ease of use. The product operates at a conversion rate of up to 125 MSPS and is optimized for outstanding dynamic performance and low power in applications where a small package size is critical. The ADC requires a single 1.8 V power supply and LVPECL-/ CMOS-/LVDS-compatible sample rate clock for full performance operation. No external reference or driver components are required for many applications.
The ADC automatically multiplies the sample rate clock for the appropriate LVDS serial data rate. A data clock output （DCO） for capturing data on the output and a frame clock output （FCO） for signaling a new output byte are provided. Individual channel power-down is supported; the AD9645 typically consumes less than 2 mW in the full power-down state. The ADC provides several features designed to maximize flexibility and minimize system cost， such as programmable output clock and data alignment and digital test pattern generation. The available digital test patterns include built-in deterministic and pseudorandom patterns， along with custom user-defined test patterns entered via the serial port interface （SPI）。 The AD9645 is available in a RoHS-compliant， 32-lead LFCSP. It is specified over the industrial temperature range of −40°C to +85°C.
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