8-Bit, 50 MSPS/80 MSPS/100 MSPS a 3 V A/D Converter AD9283 FEATURES FUNCTIONAL BLOCK DIAGRAM 8-Bit, 50, 80, and 100 MSPS ADC Low Power: 90 mW at 100 MSPS V V PWRDWN DD D On-Chip Reference and Track/Hold AD9283 475 MHz Analog Bandwidth SNR = 46.5 dB 41 MHz at 100 MSPS 8 A IN OUTPUT D7D0 T/H ADC 1 V p-p Analog Input Range STAGING A IN Single 3.0 V Supply Operation (2.7 V3.6 V) Power-Down Mode: 4.2 mW REF ENCODE TIMING APPLICATIONS GND REF REF Battery Powered Instruments OUT IN Hand-Held Scopemeters Low Cost Digital Oscilloscopes GENERAL DESCRIPTION The encoder input is TTL/CMOS compatible. A power-down The AD9283 is an 8-bit monolithic sampling analog-to-digital function may be exercised to bring total consumption to converter with an on-chip track-and-hold circuit and is opti- 4.2 mW. In power-down mode, the digital outputs are driven mized for low cost, low power, small size and ease of use. The to a high impedance state. product operates at a 100 MSPS conversion rate, with outstand- Fabricated on an advanced CMOS process, the AD9283 is ing dynamic performance over its full operating range. available in a 20-lead surface mount plastic package (SSOP) The ADC requires only a single 3.0 V (2.7 V to 3.6 V) power specified over the industrial temperature range (40C to +85C). supply and an encode clock for full performance operation. No external reference or driver components are required for many applications. The digital outputs are TTL/CMOS compatible and a separate output power supply pin supports interfacing with 3.3 V or 2.5 V logic. REV. C Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. use, nor for any infringements of patents or other rights of third parties that may result from its use. No license is granted by implication or otherwise Tel: 781/329-4700 www.analog.com under any patent or patent rights of Analog Devices. Fax: 781/326-8703 Analog Devices, Inc., 2001AD9283SPECIFICATIONS (V = 3.0 V, V = 3.0 V single-ended input external reference, unless otherwise noted) DD D Test AD9283BRS-100 AD9283BRS-80 AD9283BRS-50 Parameter Temp Level Min Typ Max Min Typ Max Min Typ Max Unit RESOLUTION 8 8 8 Bits DC ACCURACY Differential Nonlinearity 25CI 0.5 +1.25 0.5 +1.25 0.5 +1.25 LSB Full VI +1.50 +1.50 +1.50 LSB Integral Nonlinearity 25C I 1.25 0.75 +1.25 1.25 0.75 +1.25 1.25 0.75 +1.25 LSB Full VI +2.25 +1.50 +1.50 LSB No Missing Codes Full VI Guaranteed Guaranteed Guaranteed 1 Gain Error 25CI 6 2.5 +6 6 2.5 +6 6 2.5 +6 % FS Full VI 8 +8 8 +8 8 +8 % FS 1 Gain Tempco Full VI 80 80 80 ppm/C ANALOG INPUT Input Voltage Range (With Respect to A ) Full V 512 512 512 mV p-p IN Common-Mode Voltage Full V 200 200 200 mV Input Offset Voltage 25C I 35 10 +35 35 10 +35 35 10 +35 mV Full VI 40 40 40 mV Reference Voltage Full VI 1.2 1.25 1.3 1.2 1.25 1.3 1.2 1.25 1.3 V Reference Tempco Full VI 130 130 130 ppm/C Input Resistance 25C I 7 10 13 7 10 13 7 10 13 k Full VI 5 16 5 16 5 16 k Input Capacitance 25CV 2 2 2 pF Full VI A Analog Bandwidth, Full Power 25C V 475 475 475 MHz SWITCHING PERFORMANCE Maximum Conversion Rate Full VI 100 80 50 MSPS Minimum Conversion Rate 25CIV 111MSPS Encode Pulsewidth High (t)25C IV 4.3 1000 5.0 1000 8.0 1000 ns EH Encode Pulsewidth Low (t)25C IV 4.3 1000 5.0 1000 8.0 1000 ns EL Aperture Delay (t)25CV 0 0 0 ns A Aperture Uncertainty (Jitter) 25C V 5 5 5 ps rms 2 Output Valid Time (t ) Full VI 2.0 3.0 2.0 3.0 2.0 3.0 ns V 2 Output Propagation Delay (t ) Full VI 4.5 7.0 4.5 7.0 4.5 7.0 ns PD DIGITAL INPUTS Logic 1 Voltage Full VI 2.0 2.0 2.0 V Logic 0 Voltage Full VI 0.8 0.8 0.8 V Logic 1 Current Full VI 1 1 1 A Logic 0 Current Full VI 1 1 1 A Input Capacitance 25C V 2.0 2.0 2.0 pF DIGITAL OUTPUTS Logic 1 Voltage Full VI 2.95 2.95 2.95 V Logic 0 Voltage Full VI 0.05 0.05 0.05 V Output Coding Offset Binary Code Offset Binary Code Offset Binary Code POWER SUPPLY 3, 4 Power Dissipation Full VI 90 120 90 115 80 100 mW Power-Down Dissipation Full VI 4.2 7 4.2 7 4.2 7 mW Power Supply Rejection Ratio (PSRR) 25C I 18 18 18 mV/V 2 REV. C