AD10242双12位40 MSPS的MCM的A/D转换器的模拟输入信号调理

　　The AD10242 is a complete dual signal chain solution including on-board amplifiers， references， ADCs， and output buffering providing unsurpassed total system performance. Each channel is laser trimmed for gain and offset matching and provides channelto-channel crosstalk performance better than 80 dB. The AD10242 utilizes two each of the AD9632， OP279， and AD9042 in a custom MCM to gain space， performance， and cost advantages over solutions previously available.

　　The AD10242 operates with ±5.0 V for the analog signal conditioning with a separate 5.0 V supply for the analog-to-digital conversion. Each channel is completely independent， allowing operation with independent encode or analog inputs. The AD10242 also offers the user a choice of analog input signal ranges to minimize additional signal conditioning required for multiple functions within a single system. The heart of the AD10242 is the AD9042， which is designed specifically for applications requiring wide dynamic range. The AD10242 is manufactured on Analog Devices’ MIL-PRF-38534 MCM line and is completely qualified. Units are packaged in a custom， cofired， ceramic 68-lead gull wing package and specified for operation from –55°C to +125°C. Contact the factory for additional custom options including those that allow the user to ac couple the ADC directly， bypassing the front end amplifier section. Also see the AD9042 data sheet for additional details on ADC performance