February 2004 ADC081000 8-Bit, 1 GSPS A/D Converter with Internal Reference and Sample-and-Hold General Description Features NOTE: This product is currently in development. - ALL specifications are design targets and are subject to change. n n n n n The ADC081000 is a low power, high performance CMOS analog-to-digital converter that digitizes signals to 8 bits resolution at sampling rates up to 1.6 GSPS while consuming a typical 1.4 Watts from a single 1.9 Volt supply at 1.0 GSPS. This device is guaranteed to have no missing codes over the full operating temperature range. The unique folding/interpolating architecture, the fully differential comparator design and the innovative design of the internal sample-and-hold amplifier enable a very flat SINAD/ENOB response beyond Nyquist, producing a high 7.5 ENOB with a 100 MHz input signal and a 1 GHz sample rate. Output formatting is offset binary coding with LVDS digital outputs compliant with IEEE 1596.3-1996, with the exception of a reduced common mode voltage of 0.8V. The converter has a 1:2 demultiplexer that feeds two LVDS buses and reduces the output data rate on each bus to half the sampling rate. The data on these buses are interleaved in time to provide a 500 MSPS output rate per bus and a combined output rate of 1 GSPS. Setting the PD (Power Down) pin high places the converter into an inactive power down state, where it typically consumes less than 5 mW. The ADC081000 is available in a 128-lead exposed pad LQFP and operates over the industrial (-40oC ≤ TA ≤ +85oC) temperature range. Internal Sample-and-Hold Single +1.9V ± 0.1V Operation Adjustable Output Levels Guaranteed No Missing Codes Low Power Standby Mode Key Specifications n n n n n n n n Resolution Max Conversion Rate No Missing Codes ENOB @ 100 MHz Input DNL Conversion Latency PSRR Power Consumption — Operating — Power Down Mode 8 Bits 1 GSPS (min) Guaranteed 7.5 Bits (typ) ± 0.25 LSB (typ) 7/8 Clock Cycles 40 dB (typ) 1.4 W (typ) 5 mW (typ) Applications n n n n n n n Direct RF Down Conversion Digital Oscilloscopes RADAR / SONAR / ECM Satellite Set-top boxes WLANs Communications Systems Test Instrumentation Block Diagram 20068153 © 2004 National Semiconductor Corporation DS200681 www.national.com ADC081000 8-Bit, 1 GSPS A/D Converter with Internal Reference and Sample-and-Hold ADVANCE INFORMATION ADC081000 Ordering Information Extended Commercial Temperature Range (-40˚C < TA < +85˚C) NS Package ADC081000CIYB 128-Pin Exposed Pad LQFP ADC081000LEVAL Evaluation Board Pin Configuration 20068101 www.national.com 2 inches (millimeters) unless otherwise noted NOTES: UNLESS OTHERWISE SPECIFIED REFERENCE JEDEC REGISTRATION MS-026, VARIATION BFB. 24-Lead Package TC Order Number ADC081000CIMT NS Package Number VNX128A LIFE SUPPORT POLICY NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user. 2. A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. BANNED SUBSTANCE COMPLIANCE National Semiconductor certifies that the products and packing materials meet the provisions of the Customer Products Stewardship Specification (CSP-9-111C2) and the Banned Substances and Materials of Interest Specification (CSP-9-111S2) and contain no ‘‘Banned Substances’’ as defined in CSP-9-111S2. National Semiconductor Americas Customer Support Center Email: [email protected] Tel: 1-800-272-9959 www.national.com National Semiconductor Europe Customer Support Center Fax: +49 (0) 180-530 85 86 Email: [email protected] Deutsch Tel: +49 (0) 69 9508 6208 English Tel: +44 (0) 870 24 0 2171 Français Tel: +33 (0) 1 41 91 8790 National Semiconductor Asia Pacific Customer Support Center Email: [email protected] National Semiconductor Japan Customer Support Center Fax: 81-3-5639-7507 Email: [email protected] Tel: 81-3-5639-7560 National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications. ADC081000 8-Bit, 1 GSPS A/D Converter with Internal Reference and Sample-and-Hold Physical Dimensions