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WM8214

Features: • 16-bit ADC• 40MSPS conversion rate• Low power 390mW typical• 3.3V single supply operation• Single, 2 or 3 channel operation• Correlated double sampling• Programmable gain (9-bit resolution)• Programmable offset adjust (8-bit resolution)&...

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SeekIC No. : 004546147 Detail

WM8214: Features: • 16-bit ADC• 40MSPS conversion rate• Low power 390mW typical• 3.3V single supply operation• Single, 2 or 3 channel operation• Correlated double sampli...

WM8214 Data Sheet

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Part Number:
WM8214
Supply Ability:
5000

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  • 1~5000
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Product Details

Description



Features:

• 16-bit ADC
• 40MSPS conversion rate
• Low power 390mW typical
• 3.3V single supply operation
• Single, 2 or 3 channel operation
• Correlated double sampling
• Programmable gain (9-bit resolution)
• Programmable offset adjust (8-bit resolution)
• Flexible clamp control with programmable clamp voltage
• Flexible timing, can be made compatible with WM819X and WM815X parts.
• 8-bit wide multiplexed data output format
• 8-bit only output mode
• 4-bit LEGACY multiplexed nibble mode
• Internally generated voltage references
• 28-pin SSOP package, pin compatible with WM8199
• Serial control interface


Application

• High speed USB2.0 compatible scanners
• Multi-function peripherals
• High-performance CCD sensor interface
• Digital Copiers


Pinout

Connection Diagram


Specifications

CONDITION MIN MAX
Analogue supply voltage: AVDD GND - 0.3V GND + 5V
Digital supply voltages: DVDD1 − 2 GND - 0.3V GND + 5V
Digital ground: DGND GND - 0.3V GND + 0.3V
Analogue grounds: AGND1 − 2 GND - 0.3V GND + 0.3V
Digital inputs, digital outputs and digital I/O pins GND - 0.3V DVDD2 + 0.3V
Analogue inputs (RINP, GINP, BINP) GND - 0.3V AVDD + 0.3V
Other pins GND - 0.3V AVDD + 0.3V
Operating temperature range: TA 0°C +70°C
Storage temperature after soldering -65°C +150°C



Description

The WM8214 is a 16-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 40MSPS.

The WM8214 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 16-bitAnalogue to Digital Converter. The digital output data isavailable in 8-bit wide multiplexed format and there is alsoan optional single byte output mode, or 4-bit multiplexedLEGACY mode.

An internal 4-bit DAC of the WM8214 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 3.3V and a digitalinterface supply of 3.3V, the WM8214 typically onlyconsumes 390mW.




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