HI1179 General Description
The HI1179 is an 8-bit CMOS analog-to-digital converter for video use that features a sync clamp function. The adoption of a 2-step parallel method realizes low power consumption and a maximum conversion speed of 35 MSPS, allowing up to 8x over sampling of NTSC and PAL signals.
The HI1179 is available in the Industrial temperature range and is supplied in 32 lead Plastic Metric Quad Flatpack (MQFP) package. For lower sampling rates, refer to the HI1176 data sheet.
HI1179 Maximum Ratings
Supply Voltage, VDD. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 7V
Reference Voltage, VRT, VRB . . . . . . . . . . . . . . . . . . . . VDD toVSS
Analog Input Voltage, VIN. . . . . . . . . . . . . . . . . . . . . . VDD toVSS
Digital Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . VDD toVSS
Digital Output Voltage, VOH, VOL. . . . . . . . . . . . . . . . . .VDD toVSS
HI1179 Features
• Resolution 8-Bit . . . . . . . . . . . . . . . . . . ±0.5 LSB (DNL)
• ENOB at fIN = 1MHz . . . . . . . . . . . . . . . . . . . . . . 7.6 Bits
• Maximum Sampling Frequency . . . . . . . . . . . 35 MSPS
• Low Power Consumption 80mW (at 35 MSPS Typ)
(Reference Current Excluded)
• Built-In Input Clamp Function (DC Restore)
• No Sample/Hold Required
• Internal Voltage Reference
• Input CMOS Compatible
• Three-State TTL Compatible Output
• Single Power Supply . . . . . . . . . . . . . . . . . . . . . . . . .+5V
• Low Input Capacitance (Typ) . . . . . . . . . . . . . . . . . 8pF
• Reference Impedance (Typ) . . . . . . . . . . . . . . . . . 330Ω
• Direct Replacement for Sony CXD1179
HI1179 Typical Application
• Desktop Video
• Multimedia
• Video Digitizing
• Image Scanners
• Low Cost High Speed Data Acquisition Systems
HI1179 Connection Diagram
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