Datasheet AD9237 (Analog Devices) - 5
| Fabricante | Analog Devices |
| Descripción | 12-Bit, 20/40/65 MSPS 3 V Low Power A/D Converter |
| Páginas / Página | 25 / 5 — AD9237. Data Sheet. DIGITAL SPECIFICATIONS. Table 2. AD9237BCP-20. … |
| Revisión | C |
| Formato / tamaño de archivo | PDF / 620 Kb |
| Idioma del documento | Inglés |
AD9237. Data Sheet. DIGITAL SPECIFICATIONS. Table 2. AD9237BCP-20. AD9237BCP-40. AD9237BCP-65. Parameter. Min. Typ. Max. Unit
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AD9237 Data Sheet DIGITAL SPECIFICATIONS Table 2. AD9237BCP-20 AD9237BCP-40 AD9237BCP-65 Parameter Min Typ Max Min Typ Max Min Typ Max Unit
LOGIC INPUTS High Level Input Voltage 2.0 2.0 2.0 V Low Level Input Voltage 0.8 0.8 0.8 V High Level Input Current –10 +10 –10 +10 –10 +10 µA Low Level Input Current –10 +10 –10 +10 –10 +10 µA Input Capacitance 2 2 2 pF LOGIC OUTPUTS1 DRVDD = 3.3 V High-Level Output Voltage (IOH = 50 µA) 3.29 3.29 3.29 V High-Level Output Voltage (IOH = 0.5 mA) 3.25 3.25 3.25 V Low-Level Output Voltage (IOL = 1.6 mA) 0.2 0.2 0.2 V Low-Level Output Voltage (IOL = 50 µA) 0.05 0.05 0.05 V DRVDD = 2.5 V High-Level Output Voltage (IOH = 50 µA) 2.49 2.49 2.49 V High-Level Output Voltage (IOH = 0.5 mA) 2.45 2.45 2.45 V Low-Level Output Voltage (IOL = 1.6 mA) 0.2 0.2 0.2 V Low-Level Output Voltage (IOL = 50 µA) 0.05 0.05 0.05 V 1 Output voltage levels measured with 5 pF load on each output.
AC SPECIFICATIONS
AVDD = 3 V, DRVDD = 2.5 V, maximum sample rate, 2 V p-p differential input, AIN = –0.5 dBFS, 1.0 V internal reference, TMIN to TMAX, unless otherwise noted.
Table 3. AD9237BCP-20 AD9237BCP-40 AD9237BCP-65 Parameter Min Typ Max Min Typ Max Min Typ Max Unit
SIGNAL-TO-NOISE RATIO (SNR) fINPUT = 2.4 MHz 66.8 66.5 66.5 dBc fINPUT = 9.7 MHz 65.6 66.6 dBc fINPUT = 19.6 MHz 65.3 66.6 dBc fINPUT = 34.2 MHz 64.0 66.1 dBc fINPUT = 70 MHz 66.0 66.3 65.9 dBc SIGNAL-TO-NOISE RATIO AND DISTORTION (SINAD) fINPUT = 2.4 MHz 66.7 66.4 66.3 dBc fINPUT = 9.7 MHz 65.1 66.5 dBc fINPUT = 19.6 MHz 64.4 66.4 dBc fINPUT = 34.2 MHz 63.5 65.8 dBc fINPUT = 70 MHz 65.6 65.8 65.2 dBc EFFECTIVE NUMBER OF BITS (ENOB) fINPUT = 9.7 MHz 10.8 Bits fINPUT = 19.6 MHz 10.7 Bits fINPUT = 34.2 MHz 10.6 Bits Rev. C | Page 4 of 24 Document Outline Features Applications Functional Block Diagram General Description Product Highlights Table of Contents Revision History Specifications DC Specifications Digital Specifications AC Specifications Switching Specifications Timing Diagram Absolute Maximum Ratings ESD Caution Pin Configuration and Function Descriptions Terminology Equivalent Circuits Typical Performance Characteristics Applying the AD9237 Theory of Operation Analog Input and Reference Overview Differential Input Configurations Single-Ended Input Configuration Voltage Reference Internal Reference Connection External Reference Operation Clock Input Considerations Power Dissipation, Power Scaling, and Standby Mode Digital Outputs Operational Mode Selection Out of Range (OTR) Digital Output Enable Function (OE) Timing Outline Dimensions Ordering Guide
LOGIC INPUTS High Level Input Voltage 2.0 2.0 2.0 V Low Level Input Voltage 0.8 0.8 0.8 V High Level Input Current –10 +10 –10 +10 –10 +10 µA Low Level Input Current –10 +10 –10 +10 –10 +10 µA Input Capacitance 2 2 2 pF LOGIC OUTPUTS1 DRVDD = 3.3 V High-Level Output Voltage (IOH = 50 µA) 3.29 3.29 3.29 V High-Level Output Voltage (IOH = 0.5 mA) 3.25 3.25 3.25 V Low-Level Output Voltage (IOL = 1.6 mA) 0.2 0.2 0.2 V Low-Level Output Voltage (IOL = 50 µA) 0.05 0.05 0.05 V DRVDD = 2.5 V High-Level Output Voltage (IOH = 50 µA) 2.49 2.49 2.49 V High-Level Output Voltage (IOH = 0.5 mA) 2.45 2.45 2.45 V Low-Level Output Voltage (IOL = 1.6 mA) 0.2 0.2 0.2 V Low-Level Output Voltage (IOL = 50 µA) 0.05 0.05 0.05 V 1 Output voltage levels measured with 5 pF load on each output.
AC SPECIFICATIONS
AVDD = 3 V, DRVDD = 2.5 V, maximum sample rate, 2 V p-p differential input, AIN = –0.5 dBFS, 1.0 V internal reference, TMIN to TMAX, unless otherwise noted.
Table 3. AD9237BCP-20 AD9237BCP-40 AD9237BCP-65 Parameter Min Typ Max Min Typ Max Min Typ Max Unit
SIGNAL-TO-NOISE RATIO (SNR) fINPUT = 2.4 MHz 66.8 66.5 66.5 dBc fINPUT = 9.7 MHz 65.6 66.6 dBc fINPUT = 19.6 MHz 65.3 66.6 dBc fINPUT = 34.2 MHz 64.0 66.1 dBc fINPUT = 70 MHz 66.0 66.3 65.9 dBc SIGNAL-TO-NOISE RATIO AND DISTORTION (SINAD) fINPUT = 2.4 MHz 66.7 66.4 66.3 dBc fINPUT = 9.7 MHz 65.1 66.5 dBc fINPUT = 19.6 MHz 64.4 66.4 dBc fINPUT = 34.2 MHz 63.5 65.8 dBc fINPUT = 70 MHz 65.6 65.8 65.2 dBc EFFECTIVE NUMBER OF BITS (ENOB) fINPUT = 9.7 MHz 10.8 Bits fINPUT = 19.6 MHz 10.7 Bits fINPUT = 34.2 MHz 10.6 Bits Rev. C | Page 4 of 24 Document Outline Features Applications Functional Block Diagram General Description Product Highlights Table of Contents Revision History Specifications DC Specifications Digital Specifications AC Specifications Switching Specifications Timing Diagram Absolute Maximum Ratings ESD Caution Pin Configuration and Function Descriptions Terminology Equivalent Circuits Typical Performance Characteristics Applying the AD9237 Theory of Operation Analog Input and Reference Overview Differential Input Configurations Single-Ended Input Configuration Voltage Reference Internal Reference Connection External Reference Operation Clock Input Considerations Power Dissipation, Power Scaling, and Standby Mode Digital Outputs Operational Mode Selection Out of Range (OTR) Digital Output Enable Function (OE) Timing Outline Dimensions Ordering Guide