Datasheet AD9642 (Analog Devices) - 7
| 制造商 | Analog Devices |
| 描述 | 14-Bit, 170 MSPS/210 MSPS/250 MSPS, 1.8 V Analog-to-Digital Converter (ADC) |
| 页数 / 页 | 29 / 7 — AD9642. Data Sheet. SWITCHING SPECIFICATIONS. Table 4. AD9642-170. … |
| 修订版 | B |
| 文件格式/大小 | PDF / 1.2 Mb |
| 文件语言 | 英语 |
AD9642. Data Sheet. SWITCHING SPECIFICATIONS. Table 4. AD9642-170. AD9642-210. AD9642-250. Parameter
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AD9642 Data Sheet SWITCHING SPECIFICATIONS Table 4. AD9642-170 AD9642-210 AD9642-250 Parameter Temp Min Typ Max Min Typ Max Min Typ Max Unit
CLOCK INPUT PARAMETERS Input Clock Rate Full 625 625 625 MHz Conversion Rate1 Full 40 170 40 210 40 250 MSPS CLK Period—Divide-by-1 Mode (tCLK) Full 5.8 4.8 4 ns CLK Pulse Width High (tCH) Divide-by-1 Mode, DCS Enabled Full 2.61 2.9 3.19 2.16 2.4 2.64 1.8 2.0 2.2 ns Divide-by-1 Mode, DCS Disabled Full 2.76 2.9 3.05 2.28 2.4 2.52 1.9 2.0 2.1 ns Divide-by-2 Mode Through Full 0.8 0.8 0.8 ns Divide-by-8 Mode Aperture Delay (tA) Full 1.0 1.0 1.0 ns Aperture Uncertainty (Jitter, tJ) Full 0.1 0.1 0.1 ps rms DATA OUTPUT PARAMETERS Data Propagation Delay (tPD) Full 4.1 4.7 5.2 4.1 4.7 5.2 4.1 4.7 5.2 ns DCO Propagation Delay (tDCO) Full 4.7 5.3 5.8 4.7 5.3 5.8 4.7 5.3 5.8 ns DCO-to-Data Skew (tSKEW) Full 0.3 0.5 0.7 0.3 0.5 0.7 0.3 0.5 0.7 ns Pipeline Delay (Latency) Full 10 10 10 Cycles Wake-Up Time (from Standby) Full 10 10 10 μs Wake-Up Time (from Power-Down) Full 100 100 100 μs Out-of-Range Recovery Time Full 3 3 3 Cycles 1 Conversion rate is the clock rate after the divider.
Timing Diagram tA N – 1 N + 4 N + 5 N N + 3 VIN N + 1 N + 2 tCH tCLK CLK+ CLK– tDCO DCO– DCO+ tSKEW tPD D0±/D1± D0 D1 D0 D1 D0 D1 D0 D1 D0 EVEN/ODD (LSB) N – 10 N – 10 N – 9 N – 9 N – 8 N – 8 N – 7 N – 7 N – 6
02 0
D12±/D13± D12 D13 D12 D13 D12 D13 D12 D12 D12
5-
(MSB) N – 10 N – 10 N – 9 N – 9 N – 8 N – 8 N – 7 N – 7 N – 6
999 0 Figure 2. LVDS Data Output Timing Rev. B | Page 6 of 28 Document Outline FEATURES APPLICATIONS FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTION PRODUCT HIGHLIGHTS TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ADC DC SPECIFICATIONS ADC AC SPECIFICATIONS DIGITAL SPECIFICATIONS SWITCHING SPECIFICATIONS Timing Diagram TIMING SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL CHARACTERISTICS ESD CAUTION PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS EQUIVALENT CIRCUITS THEORY OF OPERATION ADC ARCHITECTURE ANALOG INPUT CONSIDERATIONS Input Common Mode Differential Input Configurations VOLTAGE REFERENCE CLOCK INPUT CONSIDERATIONS Clock Input Options Input Clock Divider Clock Duty Cycle Jitter Considerations POWER DISSIPATION AND STANDBY MODE DIGITAL OUTPUTS Digital Output Enable Function (OEB) Timing Data Clock Output (DCO) SERIAL PORT INTERFACE (SPI) CONFIGURATION USING THE SPI HARDWARE INTERFACE SPI ACCESSIBLE FEATURES MEMORY MAP READING THE MEMORY MAP REGISTER TABLE Open Locations Default Values Logic Levels Transfer Register Map MEMORY MAP REGISTER TABLE APPLICATIONS INFORMATION DESIGN GUIDELINES Power and Ground Recommendations Exposed Paddle Thermal Heat Slug Recommendations VCM SPI Port OUTLINE DIMENSIONS ORDERING GUIDE
CLOCK INPUT PARAMETERS Input Clock Rate Full 625 625 625 MHz Conversion Rate1 Full 40 170 40 210 40 250 MSPS CLK Period—Divide-by-1 Mode (tCLK) Full 5.8 4.8 4 ns CLK Pulse Width High (tCH) Divide-by-1 Mode, DCS Enabled Full 2.61 2.9 3.19 2.16 2.4 2.64 1.8 2.0 2.2 ns Divide-by-1 Mode, DCS Disabled Full 2.76 2.9 3.05 2.28 2.4 2.52 1.9 2.0 2.1 ns Divide-by-2 Mode Through Full 0.8 0.8 0.8 ns Divide-by-8 Mode Aperture Delay (tA) Full 1.0 1.0 1.0 ns Aperture Uncertainty (Jitter, tJ) Full 0.1 0.1 0.1 ps rms DATA OUTPUT PARAMETERS Data Propagation Delay (tPD) Full 4.1 4.7 5.2 4.1 4.7 5.2 4.1 4.7 5.2 ns DCO Propagation Delay (tDCO) Full 4.7 5.3 5.8 4.7 5.3 5.8 4.7 5.3 5.8 ns DCO-to-Data Skew (tSKEW) Full 0.3 0.5 0.7 0.3 0.5 0.7 0.3 0.5 0.7 ns Pipeline Delay (Latency) Full 10 10 10 Cycles Wake-Up Time (from Standby) Full 10 10 10 μs Wake-Up Time (from Power-Down) Full 100 100 100 μs Out-of-Range Recovery Time Full 3 3 3 Cycles 1 Conversion rate is the clock rate after the divider.
Timing Diagram tA N – 1 N + 4 N + 5 N N + 3 VIN N + 1 N + 2 tCH tCLK CLK+ CLK– tDCO DCO– DCO+ tSKEW tPD D0±/D1± D0 D1 D0 D1 D0 D1 D0 D1 D0 EVEN/ODD (LSB) N – 10 N – 10 N – 9 N – 9 N – 8 N – 8 N – 7 N – 7 N – 6
02 0
D12±/D13± D12 D13 D12 D13 D12 D13 D12 D12 D12
5-
(MSB) N – 10 N – 10 N – 9 N – 9 N – 8 N – 8 N – 7 N – 7 N – 6
999 0 Figure 2. LVDS Data Output Timing Rev. B | Page 6 of 28 Document Outline FEATURES APPLICATIONS FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTION PRODUCT HIGHLIGHTS TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ADC DC SPECIFICATIONS ADC AC SPECIFICATIONS DIGITAL SPECIFICATIONS SWITCHING SPECIFICATIONS Timing Diagram TIMING SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL CHARACTERISTICS ESD CAUTION PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS EQUIVALENT CIRCUITS THEORY OF OPERATION ADC ARCHITECTURE ANALOG INPUT CONSIDERATIONS Input Common Mode Differential Input Configurations VOLTAGE REFERENCE CLOCK INPUT CONSIDERATIONS Clock Input Options Input Clock Divider Clock Duty Cycle Jitter Considerations POWER DISSIPATION AND STANDBY MODE DIGITAL OUTPUTS Digital Output Enable Function (OEB) Timing Data Clock Output (DCO) SERIAL PORT INTERFACE (SPI) CONFIGURATION USING THE SPI HARDWARE INTERFACE SPI ACCESSIBLE FEATURES MEMORY MAP READING THE MEMORY MAP REGISTER TABLE Open Locations Default Values Logic Levels Transfer Register Map MEMORY MAP REGISTER TABLE APPLICATIONS INFORMATION DESIGN GUIDELINES Power and Ground Recommendations Exposed Paddle Thermal Heat Slug Recommendations VCM SPI Port OUTLINE DIMENSIONS ORDERING GUIDE