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WM8152SCDS/R 数据表(PDF) 1 Page - Wolfson Microelectronics plc |
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WM8152SCDS/R 数据表(HTML) 1 Page - Wolfson Microelectronics plc |
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1 / 28 page  w WM8152 Single Channel 16-bit CIS/CCD AFE with 4-bit Wide Output WOLFSON MICROELECTRONICS plc To receive regular email updates, sign up at http://www.wolfsonmicro.com/enews/ Production Data, April 2007, Rev 4.2 Copyright ©2007 Wolfson Microelectronics plc DESCRIPTION The WM8152 is a 16-bit analogue front end/digitiser IC which processes and digitises the analogue output signals from CCD sensors or Contact Image Sensors (CIS) at pixel sample rates of up to 12MSPS. The device includes a complete analogue signal processing channel containing Reset Level Clamping, Correlated Double Sampling, Programmable Gain and Offset adjust functions. Internal multiplexers allow fast switching of offset and gain for line-by-line colour processing. The output from this channel is time multiplexed into a high-speed 16-bit Analogue to Digital Converter. The digital output data is available in 4-bit wide multiplexed format. An internal 4-bit DAC is supplied for internal reference level generation. This may be used to reference CIS signals or during Reset Level Clamping to clamp CCD signals. An external reference level may also be supplied. ADC references are generated internally, ensuring optimum performance from the device. Using an analogue supply voltage of 5V, a digital core voltage of 5V, and a digital interface supply of either 5V or 3.3V, the WM8152 typically only consumes 225mW when operating from a single 5V supply. FEATURES • 16-bit ADC • 12MSPS conversion rate • Low power - 225mW typical • 5V single supply or 5V/3.3V dual supply operation • Single channel operation • Correlated double sampling • Programmable gain (8-bit resolution) • Programmable offset adjust (8-bit resolution) • Programmable clamp voltage • 4-bit wide multiplexed data output format • Internally generated voltage references • 20-lead SSOP package • Serial control interface APPLICATIONS • Flatbed and sheetfeed scanners • USB compatible scanners • Multi-function peripherals • High-performance CCD sensor interface BLOCK DIAGRAM VRLC/VBIAS VINP SEN VSMP MCLK SDI SCK TIMING CONTROL CL RLC V S R S VRX VRT VRB CDS 4 CONFIGURABLE SERIAL CONTROL INTERFACE 16- BIT ADC AGND1 DGND AVDD DVDD1 OP[0] OP[1] OP[2] OP[3]/SDO AGND2 VREF/BIAS R G B M U X R G B PGA I/P SIGNAL POLARITY ADJUST 8 8 + + M U X DATA I/O PORT DVDD2 W WM8152 OFFSET DAC RLC DAC |
类似零件编号 - WM8152SCDS/R |
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类似说明 - WM8152SCDS/R |
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