WM8199SCDS

Product Summary

The WM8199SCDS 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 20MSPS. The WM8199SCDS 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. The applications of the WM8199SCDS include Flatbed and sheetfeed scanners, USB compatible scanners, Multi-function peripherals and High-performance CCD sensor interface.

Parametrics

WM8199SCDS absolute maximum ratings: (1)Analogue supply voltage, AVDD: GND - 0.3V to GND + 7V; (2)Digital supply voltages, DVDD1-2: GND - 0.3V to GND + 7V; (3)Digital ground, DGND: GND - 0.3V to GND + 0.3V; (4)Analogue grounds, AGND1-2: GND - 0.3V to GND + 0.3V; (5)Digital inputs, digital outputs and digital I/O pins: GND - 0.3V to DVDD2 + 0.3V; (6)Analogue inputs (RINP, GINP, BINP): GND - 0.3V to AVDD + 0.3V; (7)Other pins: GND - 0.3V to AVDD + 0.3V; (8)Operating temperature range, TA: 0 to +70℃; (9)Storage temperature after soldering: -65 to +150℃; (10)Package body temperature (soldering, 10 seconds): +260℃; (11)Package body temperature (soldering, 2 minutes): +183℃.

Features

WM8199SCDS features: (1)16-bit ADC; (2)20MSPS conversion rate; (3)30MSPS conversion rate at 8-bits; (4)Low power – 358mW typical; (5)5V single supply or 5V/3.3V dual supply operation; (6)Single or 3 channel operation; (7)Correlated double sampling; (8)Programmable gain (8-bit resolution); (9)Programmable offset adjust (8-bit resolution); (10)Programmable clamp voltage; (11)8 or 4-bit wide multiplexed data output formats; (12)Internally generated voltage references; (13)28-pin SSOP package; (14)Serial control interface.

Diagrams