8-Bit 40 MSPS/60 MSPS/80 MSPS a A/D Converter AD9057 FEATURES FUNCTIONAL BLOCK DIAGRAM 8-Bit, Low Power ADC: 200 mW Typical V PWRDN V 120 MHz Analog Bandwidth D DD On-Chip 2.5 V Reference and Track-and-Hold AD9057 1 V p-p Analog Input Range 8 Single 5 V Supply Operation AIN T/H ADC D7D0 5 V or 3 V Logic Interface 1k BIAS OUT Power-Down Mode: <10 mW VREF IN 3 Performance Grades (40 MSPS, 60 MSPS, 80 MSPS) VREF OUT 2.5V APPLICATIONS Digital Communications (QAM Demodulators) RGB and YC/Composite Video Processing GND ENCODE Digital Data Storage Read Channels Medical Imaging Digital Instrumentation PRODUCT DESCRIPTION power-down function may be exercised to bring total consumption The AD9057 is an 8-bit monolithic analog-to-digital converter to <10 mW. In power-down mode, the digital outputs are driven optimized for low cost, low power, small size, and ease of use. to a high impedance state. With 40 MSPS, 60 MSPS, or 80 MSPS encode rate capability Fabricated on an advanced BiCMOS process, the AD9057 is and full-power analog bandwidth of 120 MHz, the component is available in a space-saving 20-lead shrink small outline package ideal for applications requiring excellent dynamic performance. (20-lead SSOP) and is specified over the industrial temperature To minimize system cost and power dissipation, the AD9057 range (40C to +85C). includes an internal 2.5 V reference and a track-and-hold (T/H) Customers desiring multichannel digitization may consider the circuit. The user must provide only a 5 V power supply and an AD9059, a dual 8-bit, 60 MSPS monolithic based on the encode clock. No external reference or driver components are AD9057 ADC core. The AD9059 is available in a 28-lead sur- required for many applications. face-mount plastic package (28-lead SSOP) and is specified over The AD9057s encode input is TTL/CMOS compatible, and the the industrial temperature range. 8-bit digital outputs can be operated from 5 V or 3 V supplies. A REV. D Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. 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. Trademarks and Fax: 781/326-8703 2003 Analog Devices, Inc. All rights reserved. registered trademarks are the property of their respective companies.(V = 5 V, V = 3 V external reference, unless otherwise noted.) AD9057SPECIFICATIONS D DD Test AD9057BRS-40 AD9057BRS-60 AD9057BRS-80 Parameter Temp Level Min Typ Max Min Typ Max Min Typ Max Unit RESOLUTION 8 8 8 Bits DC ACCURACY Differential Nonlinearity 25 CI 0.75 1.9 0.75 1.9 0.75 1.9 LSB Full VI 2.0 2.0 2.0 LSB Integral Nonlinearity 25 CI 0.75 1.9 0.75 1.9 0.75 1.9 LSB Full VI 2.0 2.0 2.0 LSB No Missing Codes Full VI Guaranteed Guaranteed Guaranteed 1 Gain Error 25 CI 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 V 70 70 70 ppm/ C ANALOG INPUT Input Voltage Range (Centered at 2.5 V) 25 CV 1.0 1.0 1.0 V p-p Input Offset Voltage 25 CI 15 0 +15 15 0 +15 15 0 +15 mV Full VI 25 +25 25 +25 25 +25 mV Input Resistance 25 CV 150 150 150 kW Input Capacitance 25 CV 222 pF Input Bias Current 25 CI 6 16 6 16 6 16 mA Full VI 25 25 25 mA Analog Bandwidth 25 CV 120 120 120 MHz BAND GAP REFERENCE Output Voltage Full VI 2.4 2.5 2.6 2.4 2.5 2.6 2.4 2.5 2.6 V Temperature Coefficient Full V 10 10 10 ppm/ C SWITCHING PERFORMANCE Maximum Conversion Rate Full VI 40 60 80 MSPS Minimum Conversion Rate Full IV 5 5 5 MSPS Aperture Delay (t)25 CV 2.7 2.7 2.7 ns A Aperture Uncertainty (Jitter) 25 CV 555 ps rms 2 Output Valid Time (t ) Full IV 4.0 6.6 4.0 6.6 4.0 6.6 ns V 2 Output Propagation Delay (t ) Full IV 11.5 18.0 9.5 14.2 8.0 11.3 ns PD 3 DYNAMIC PERFORMANCE Transient Response 25 CV 999 ns Overvoltage Recovery Time 25 CV 999 ns Signal-to-Noise Ratio (SINAD) (With Harmonics) f = 10.3 MHz 25 CI 42 45.5 42 45 41.5 45 dB IN f = 76 MHz 25 CV 44.0 43.5 43.5 dB IN Effective Number of Bits (ENOB) f = 10.3 MHz 25 CI 6.7 7.2 6.7 7.2 6.6 7.2 Bits IN f = 76 MHz 25 CV 7.0 6.9 6.9 Bits IN Signal-to-Noise Ratio (SNR) (Without Harmonics) f = 10.3 MHz 25 CI 43 46.5 43 46 42.5 46 dB IN f = 76 MHz 25 CV 45.5 45 45 dB IN Second Harmonic Distortion f = 10.3 MHz 25 CI 50 62 50 62 50 62 dBc IN f = 76 MHz 25 CV 54 54 54 dBc IN Third Harmonic Distortion f = 10.3 MHz 25 CI 46 60 46 60 46 60 dBc IN f = 76 MHz 25 CV 54 54 54 dBc IN Two Tone Intermodulation Distortion (IMD) 25 CV 52 52 52 dBc Differential Phase 25 CV 0.8 0.8 0.8 Degrees Differential Gain 25 CV 1.0 1.0 1.0 % 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 mA Logic 0 Current Full VI 1 1 1 mA Input Capacitance 25 CV 4.5 4.5 4.5 pF Encode Pulsewidth High (t)25 CIV 9.0 166 6.7 166 5.5 166 ns EH Encode Pulsewidth Low (t)25 CIV 9.0 166 6.7 166 5.5 166 ns EL 2 REV. D