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Datenblatt-Suchmaschine für elektronische Bauteile |
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Datenblatt-Suchmaschine für elektronische Bauteile |
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WM2331 Datenblatt(PDF) 1 Page - Wolfson Microelectronics plc |
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WM2331 Datenblatt(HTML) 1 Page - Wolfson Microelectronics plc |
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1 / 25 page  WM2331 10-bit 30MSPS ADC with PGA and Clamp Production Data, April 2001, Rev 1.4 WOLFSON MICROELECTRONICS LTD Lutton Court, Bernard Terrace, Edinburgh, EH8 9NX, UK Tel: +44 (0) 131 667 9386 Fax: +44 (0) 131 667 5176 Email: sales@wolfson.co.uk www.wolfsonmicro.com Production Data datasheets contain final specifications current on publication date. Supply of products conforms to Wolfson Microelectronics’ Terms and Conditions. 2001 Wolfson Microelectronics Ltd . DESCRIPTION The WM2331 is a high speed, 10-bit pipeline analogue-to- digital converter (ADC) with on-chip programmable gain amplifier (PGA) and clamp circuit, and internal voltage references. Conversion is controlled by a single clock input. The device has a high bandwidth differential sample and hold input, which gives excellent common-mode noise immunity and low distortion. Alternatively, it can be driven in single ended fashion with an optional voltage clamp for DC restoration that can take its reference from an on-chip 10-bit DAC or an external source. The WM2331 provides internal reference voltages for setting the ADC full-scale range without the requirement for external circuitry. However, it can also accept external references for applications where common or high-precision references are required. A bidirectional 10-bit parallel interface is used both to control the device and to read ADC conversion data. ADC data can be output in unsigned binary or two’s complement format. An out-of-range output pin indicates when the input signal is outside the converter’s range. The WM2331 operates with independent analogue and digital supplies of 3V to 5.5V and is supplied in a 28-pin TSSOP package. FEATURES • 10-bit resolution ADC • 30MSPS conversion rate • Programmable Gain Amplifier (PGA) • Built in clamp function (DC restore) with 10-bit DAC • Adjustable internal voltage references • Wide Input Bandwidth - 150MHz • Unsigned Binary or Two’s complement output format • Programmable via parallel interface • Independent analogue and digital supplies, 3V to 5.5V • Low power - 92mW typical at 3.0V supplies • Powerdown mode to 3mW typical • 28-pin TSSOP package APPLICATIONS • Composite Video Digitisation • Digital Copiers • Digital Video Cameras • Set Top Box (STB) • IF and Baseband Digitisation • Medical Imaging • High Speed Data Acquisition BLOCK DIAGRAM AIN ON-CHIP REFERENCE GENERATOR ADC Core S/H PGA REFTS DIO[9:0] INPUT/ OUTPUT BUFFERS OVR REFBS MODE REFSENSE AGND AVDD REFBF REFTF CLAMP LEVEL DAC CLAMP AMPLIFIER OEB DGND DVDD CONTROL REGISTERS CLAMP CLAMPIN M U X WR TIMING CONTROL CLK VREF WM2331 |
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