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WM8190

Features: ` 14-bit ADC` No missing codes guaranteed` 6MSPS conversion rate` Low power 250mW 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)` P...

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SeekIC No. : 004546137 Detail

WM8190: Features: ` 14-bit ADC` No missing codes guaranteed` 6MSPS conversion rate` Low power 250mW typical` 5V single supply or 5V/3.3V dual supply operation` Single or 3 channel operation` Correlated dou...

WM8190 Data Sheet

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Part Number:
WM8190
Supply Ability:
5000

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  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

` 14-bit ADC
` No missing codes guaranteed
` 6MSPS conversion rate
` Low power 250mW 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
` 8,7 or 4-bit wide multiplexed data output formats
` Internally generated voltage references
` 28-pin SOIC package
` Serial control interface


Application

· Flatbed and sheetfeed scanners
· USB compatible scanners
· Multi-function peripherals
· High-performance CCD sensor interface


Pinout

Connection Diagram


Specifications

CONDITION MIN MAX
Digital supply voltage: DVDD GND - 0.3V GND + 7V
Analogue supply voltage: AVDD GND - 0.3V GND + 7V
Digital ground: DGND. Analogue ground: AGND1, AGND2 GND - 0.3V GND + 0.3V
Digital inputs: MCLK, VSMP, CLAMP GND - 0.3V GND + 0.3V
Digital outputs: DOUT GND - 0.3V DVDD2 + 0.3V
Analogue inputs: VINM, VINP, VREFIN GND - 0.3V AVDD + 0.3V
Reference pins: VRT, VRB GND - 0.3V AVDD + 0.3V
Operating temperature range: TA 0°C +70°C
Storage temperature -65°C +150°C
Package body temperature (soldering, 10 seconds)   +240°C
Package body temperature (soldering, 2 minutes)   +183°C



Description

The WM8190 is a 14-bit analogue front end/digitiser ICwhich processes and digitises the analogue output signalsfrom CCD sensors or Contact Image Sensors (CIS) at pixelsample rates of up to 6MSPS.

The WM8190 includes three analogue signal processingchannels each of which contains Reset Level Clamping,Correlated Double Sampling and Programmable Gain andOffset adjust functions. Three multiplexers allow singlechannel processing. The output from each of thesechannels is time multiplexed into a single high-speed 14-bitAnalogue to Digital Converter. The digital output data isavailable in 8, 7 or 4-bit wide multiplexed format, with nomissing codes.

An internal 4-bit DAC of the WM8190 is supplied for internal reference levelgeneration. This may be used during CDS to reference CISsignals or during Reset Level Clamping to clamp CCDsignals. An external reference level may also be supplied.ADC references are generated internally, ensuring optimumperformance from the device.

Using an analogue supply voltage of 5V and a digitalinterface supply of either 5V or 3.3V, the WM8190 typicallyonly consumes 250mW when operating from a single5V supply.




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