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WM8196 データシート(PDF) 1 Page - Cirrus Logic |
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WM8196 データシート(HTML) 1 Page - Cirrus Logic |
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1 / 32 page  w WM8196 (8 + 8) Bit Output 16-bit CIS/CCD AFE/Digitiser WOLFSON MICROELECTRONICS plc To receive regular email updates, sign up at http://www.wolfsonmicro.com/enews/ Production Data, October 2008, Rev 4.6 Copyright ©2008 Wolfson Microelectronics plc DESCRIPTION The WM8196 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 three analogue signal processing channels each of which contains Reset Level Clamping, Correlated Double Sampling and Programmable Gain and Offset adjust functions. Three multiplexers allow single channel processing. The output from each of these channels is time multiplexed into a single high-speed 16-bit Analogue to Digital Converter. The digital output data is available in 8 or 4-bit wide multiplexed format. An internal 4-bit DAC is supplied for internal reference level generation. This may be used during CDS 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 and a digital interface supply of either 5V or 3.3V, the WM8196 typically only consumes 300mW when operating from a single 5V supply. FEATURES • 16-bit ADC • 12MSPS conversion rate • Low power – 320mW typical • 5V single supply or 5V/3.3V dual supply operation • Single or 3 channel operation • Correlated double sampling • Programmable gain (8-bit resolution) • Programmable offset adjust (8-bit resolution) • Programmable clamp voltage • 8 or 4-bit wide multiplexed data output formats • Internally generated voltage references • 28-lead SSOP package • Serial control interface APPLICATIONS • Flatbed and sheetfeed scanners • USB compatible scanners • Multi-function peripherals • High-performance CCD sensor interface BLOCK DIAGRAM RINP DATA I/O PORT SEN VSMP MCLK VRLC/VBIAS SDI SCK DVDD2 TIMING CONTROL CL RLC/ACYC RLC V S R S BINP GINP VRX VRT OEB M U X VRB RLC RLC CDS CDS CDS RLC DAC 4 CONFIGURABLE SERIAL CONTROL INTERFACE 16- BIT ADC AGND1 DGND DVDD1 OP[0] OP[1] OP[2] OP[3] OP[4] OP[5] OP[6] OP[7]/SDO AGND2 M U X VREF/BIAS M U X R G B M U X R G B + PGA I/P SIGNAL POLARITY ADJUST 8 8 PGA 8 8 OFFSET DAC PGA 8 OFFSET DAC 8 + + + + + I/P SIGNAL POLARITY ADJUST I/P SIGNAL POLARITY ADJUST AVDD w WM8196 OFFSET DAC |
同様の部品番号 - WM8196 |
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同様の説明 - WM8196 |
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