Datasheet AD6645 (Analog Devices) - 5

AD6645 Data Sheet DIGITAL SPECIFICATIONS
AVCC = 5 V, DVCC = 3.3 V; TMIN and TMAX at rated speed grade, unless otherwise noted.
Table 2. Test AD6645ASQ-80/AD6645ASV-80 AD6645ASQ-105/AD6645ASV-105 Parameter Temp Level Min Typ Max Min Typ Max Unit
ENCODE INPUTS (ENCODE, ENCODE) Differential Input Voltage1 Full IV 0.4 0.4 V p-p Differential Input Resistance 25°C V 10 10 kΩ Differential Input Capacitance 25°C V 2.5 2.5 pF LOGIC OUTPUTS (D13 to D0, DRY, OVR) Logic Compatibility CMOS CMOS Logic 1 Voltage (DVCC = 3.3 V)2 Full II 2.85 DVCC − 2 2.85 DVCC − 2 V Logic 0 Voltage (DVCC = 3.3 V)2 Full II 0.2 0.5 0.2 0.5 V Output Coding Twos complement Twos complement DMID Full V DVCC/2 DVCC/2 V 1 All ac specifications tested by driving ENCODE and ENCODE differentially. 2 Digital output logic levels: DVCC = 3.3 V, CLOAD = 10 pF. Capacitive loads >10 pF degrades performance.
AC SPECIFICATIONS
All ac specifications tested by driving ENCODE and ENCODE differentially. AVCC = 5 V, DVCC = 3.3 V; ENCODE, ENCODE, TMIN and TMAX at rated speed grade, unless otherwise noted.
Table 3. AD6645ASQ-80/ AD6645ASQ-105/ Test AD6645ASV-80 AD6645ASV-105 Parameter Temp Level Min Typ Max Min Typ Max Unit Conditions
SNR Analog Input @ −1 dBFS 25°C V 75.0 75.0 dB At 15.5 MHz Full II 72.5 74.5 dB At 30.5 MHz 25°C I 72.5 74.5 dB At 37.7 MHz Full II 72.0 73.5 72.0 73.5 dB At 70.0 MHz 25°C V 73.0 73.0 dB At 150.0 MHz 25°C V 72.0 72.0 dB At 200.0 MHz SINAD Analog Input @ −1 dBFS 25°C V 75.0 75.0 dB At 15.5 MHz Full II 72.5 74.5 dB At 30.5 MHz 25°C I 72.5 74.5 dB At 37.7 MHz Full V 73.0 73.0 dB At 70.0 MHz 25°C V 68.5 67.5 dB At 150.0 MHz 25°C V 62.5 62.5 dB At 200.0 MHz WORST HARMONIC (SECOND OR THIRD) Analog Input @ −1 dBFS 25°C V 93.0 93.1 dBc At 15.5 MHz Full II 85.0 93.0 dBc At 30.5 MHz 25°C I 85.0 93.0 dBc At 37.7 MHz Full V 89.0 87.0 dBc At 70.0 MHz 25°C V 70.0 70.0 dBc At 150.0 MHz 25°C V 63.5 63.5 dBc At 200.0 MHz Rev. E | Page 4 of 24 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION PRODUCT HIGHLIGHTS FUNCTIONAL BLOCK DIAGRAM REVISION HISTORY SPECIFICATIONS DC SPECIFICATIONS DIGITAL SPECIFICATIONS AC SPECIFICATIONS SWITCHING SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE EXPLANATION OF TEST LEVELS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS EQUIVALENT CIRCUITS TERMINOLOGY THEORY OF OPERATION APPLYING THE AD6645 Encoding the AD6645 Driving the Analog Inputs Power Supplies Digital Outputs Grounding LAYOUT INFORMATION JITTER CONSIDERATIONS OUTLINE DIMENSIONS ORDERING GUIDE