AD9070

a FEATURES 10-Bit, 100 MSPS ADC Low Power: 600 mW Typical at 100 MSPS On-Chip Track/Hold 230 MHz Analog Bandwidth SINAD = 54 dB @ 41 MHz On–Chip Reference 1 V p-p Analog Input Range Single Supply Operation: +5 V or –5 V Differential Clock Input Available in Standard Military Drawing Version APPLICATIONS Digital Communications Signal Intelligence Digital Oscilloscopes Spectrum Analyzers Medical Imaging Radar HDTV GENERAL DESCRIPTION AD9070 AIN AIN 10-Bit, 100 MSPS A/D Converter AD9070 FUNCTIONAL BLOCK DIAGRAM VREF IN VREF REF OUT COMP BYPASS SOIC (BR) PACKAGE ONLY –2.5V T/H ADC ENCODE LOGIC 10 D9 – D0 SUM AMP ENCODE ENCODE TIMING DAC ADC OR DIP PACKAGE ONLY VEE GND The AD9070 is a monolithic sampling analog-to-digital converter with an on-chip track-and-hold circuit and ECL digital interfaces. The product operates at a 100 MSPS conversion rate with outstanding dynamic performance over its full operating range. The ADC requires only a single –5 V supply and an encode clock for full performance operation. The digital outputs are ECL compatible, while a differential clock input accommodates a wide range of logic levels. The AD9070 may be operated in a Positive ECL (PECL) environment with a single +5 V supply. An Out-of-Range output (OR) is available in the DIP version to indicate that a conversion result is outside the operating range. In both package styles, the output data are held at saturation levels during an out-of-range condition. The input amplifier supports single-ended interfaces. An internal –2.5 V reference is included in the SOIC packaged device (an external voltage reference is required for the DIP version). Fabricated on an advanced bipolar process, the AD9070 is available in a plastic SOIC package specified over the industrial temperature range (–40°C to +85°C), and a full MIL-PRF-38534 QML version (–55°C to +125°C) in a ceramic Dual-in-Line Package (DIP). R EV. B 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 which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781/329-4700 World Wide Web Site: http://www.analog.com Fax: 781/326-8703 © Analog Devices, Inc., 2000 AD9070–SPECIFICATIONS Parameter RESOLUTION DC ACCURACY Differential Nonlinearity Integral Nonlinearity No Missing Codes Gain Error1 Gain Tempco1 ANALOG INPUT Input Voltage Range (with Respect to AIN) Common-Mode Voltage Input Offset Voltage Input Resistance Input Capacitance Input Bias Current Analog Bandwidth, Full Power REFERENCE OUTPUT Output Voltage Temperature Coefficient SWITCHING PERFORMANCE Maximum Conversion Rate Minimum Conversion Rate Encode Pulse Width High (t EH) Encode Pulse Width Low (t EL) Aperture Delay (tA) Aperture Uncertainty (Jitter) Output Valid Time (tV)2 Output Propagation Delay (t PD)2 Output Rise Time (tR) Output Fall Time (tF) DIGITAL INPUTS Logic “1” Voltage Logic “0” Voltage Logic “1” Current Logic “0” Current Input Capacitance DIGITAL OUTPUTS Logic “1” Voltage Logic “0” Voltage Output Coding POWER SUPPLY VEE Supply Current (VEE = –5 V) Power Dissipation3 Power Supply Sensitivity 4 +25°C Full +25°C Full Full +25°C Full Full Full Full +25°C Full +25°C Full +25°C +25°C Full +25°C Full Full Full Full +25°C +25°C +25°C +25°C Full Full Full Full Full Full Full Full +25°C Full Full Temp (VEE = –5 V, ENCODE = 100 MSPS, outputs loaded with 100 otherwise noted) Test Level Min AD9070BR Typ Max 10 I VI I VI VI I VI V V V I I I I V I I V VI V VI IV IV IV V V VI VI VI VI IV IV VI VI V VI VI ± 0.6 ± 0.7 ± 0.6 ± 0.9 Guaranteed ±1 115 ± 512 –2.5 ± 0.2 ±7 ± 18 ±8 40 40 3 75 200 75 230 –2.5 170 –2.6 +1.25/–1.0 +1.5/–1.0 ± 1.5 ±4 to –2 V unless 5962-9756301HXC Min Typ Max 10 ± 0.6 ± 0.9 ± 0.6 ± 1.5 Guaranteed ±1 ±2 130 ± 512 –2.5 ± 0.2 ±7 ±9 40 40 3 75 75 230 N/A N/A 100 +1.25/–1.0 +2.00/–1.0 ± 1.5 ± 2.25 ±4 ±6 Units Bit LSB LSB LSB LSB % FS % FS ppm/°C mV p-p V mV mV kΩ kΩ pF µA µA MHz V ppm/°C MSPS MSPS ns ns ns ps rms ns ns ns ns V V µA µA pF V V ± 18 ± 20 10 10 10 200 200 –2.4 100 4.5 4.5 0.85 2.5 2.6 3.0 0.5 0.5 40 13 13 4.5 4.5 0.85 2.5 2.6 3.0 0.5 0.5 40 13 13 1.5 1.5 4.0 4.0 1.2 1.2 –0.4 –1.5 ± 10 ± 10 –1.1 –0.4 –1.5 ± 10 ± 10 3 –1.1 3 –1.15 –1.60 Twos Complement 80 400 120 600 150 750 –1.1 –1.65 Twos Complement 80 400 120 600 150 750 Full Full VI VI mA mW +25°C I 0.005 0.012 0.005 0.012 V/V – 2– REV. B AD9070 Parameter DYNAMIC PERFORMANCE 5 Transient Response Overvoltage Recovery Time Signal-to-Noise Ratio (SNR) (Without Harmonics) fIN = 10.3 MHz fIN = 41 MHz Signal-to-Noise Ratio (SINAD) (With Harmonics) fIN = 10.3 MHz fIN = 41 MHz Effective Number of Bit fIN = 10.3 MHz fIN = 41 MHz 2nd Harmonic Distortion fIN = 10.3 MHz fIN = 41 MHz 3rd Harmonic Distortion fIN = 10.3 MHz fIN = 41 MHz Two-Tone Intermod Distortion (IMD) fIN = 10.3 MHz fIN = 41 MHz Temp +25°C +25°C +25°C Full +25°C Full Test Level V V AD9070BR Min Typ Max 3 4 5962-9756301HXC Min Typ Max 3 4 Units ns ns I V I V 55 54 57 56 56 55 55 54 57 55 56 54 dB dB dB dB +25°C Full +25°C Full +25°C +25°C +25°C +25°C +25°C +25°C +25°C +25°C I V I V I I I I I I V V 54 51 56 55 54 53 9.2 8.9 70 63 71 61 70 60 54 51 56 54 54 52 9.2 8.9 70 63 71 61 70 60 dB dB dB dB Bits Bits dBc dBc dBc dBc dBc dBc 8.8 8.3 63 58 65 57 8.8 8.3 63 58 65 57 NOTES 1 Gain error and gain temperature coefficient are based on the ADC only (with a fixed –2.5 V external reference). 2 tV and tPD are measured from the threshold crossing of the ENCODE input to the 50% levels of the digital outputs. The output ac load during test is 10 pF. 3 Power dissipation is measured under the following conditions: f S 100 MSPS, analog input is –1 dBfs at 10.3 MHz. Power dissipation does not include the current of the external ECL pull-down resistors that set the current in the ECL output followers. 4 A change in input offset voltage with respect to a change in V EE. 5 SNR/harmonics based on an analog input voltage of –1.0 dBfs referenced to a 1.024 V full-scale input range. Typical thermal impedance for the R style (SOIC) 28-lead package: θJC = 23°C/W, θCA = 48°C/W, θJA = 71°C/W. Typical thermal impedance for the DH style (Ceramic DIP) 28-lead package: θJC = 8°C/W, θCA = 43°C/W, θJA = 51°C/W. Contact DSCC to obtain the latest revision of the 5962-9756301 drawing. Specifications subject to change without notice. SAMPLE N–1 SAMPLE N SAMPLE N+3 SAMPLE N+4 AIN tA tEH ENCODE ENCODE SAMPLE N+1 SAMPLE N+2 tEL 1/fs tPD D9–D0 DATA N–4 DATA N–3 DATA N–2 DATA N–1 DATA N tV DATA N+1 Figure 1. Timing Diagram REV. B – 3– AD9070 ABSOLUTE MAXIMUM RATINGS* Table I. Output Coding VEE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –6 V Analog Inputs . . . . . . . . . . . . . . . . . . . . . VEE –1 V to +1.0 V Digital Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . VEE to 0.0 V VREF IN, VREF OUT . . . . . . . . . . . . . . . . . . . . VEE to 0.0 V Digital Output Current . . . . . . . . . . . . . . . . . . . . . . . . 20 mA Operating Temperature . . . . . . . . . . . . . . . . –55°C to +125°C Storage Temperature . . . . . . . . . . . . . . . . . . –65°C to +150°C Maximum Junction Temperature . . . . . . . . . . . . . . . +175°C Maximum Case Temperature . . . . . . . . . . . . . . . . . . +150°C *Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions outside of those indicated in the operation sections of this specification is not implied. Exposure to absolute maximum ratings for extended periods may affect device reliability. Step 1024 1023 1022 • • • 513 512 511 • • • 1 0 –1 AIN–AIN ≥ 0.512 V 0.511 V 0.510 V • • • 0.001 V 0.000 V –0.001 V • • • –0.511 V –0.512 V ≤ –0.513 V Code >511 511 510 • • • 1 0 –1 • • • –511 –512