Datasheet AD7821 (Analog Devices) - 7
| Manufacturer | Analog Devices |
| Description | High Speed, µP-Compatible, CMOS, 8-Bit Sampling ADC |
| Pages / Page | 17 / 7 — AD7821—Typical Performance Characteristics |
| Revision | B |
| File Format / Size | PDF / 332 Kb |
| Document Language | English |
AD7821—Typical Performance Characteristics
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AD7821—Typical Performance Characteristics
TPC 1. Conversion Time TPC 2. Power Supply Current vs. TPC 3. Accuracy vs. tWR (RD Mode) vs.Temperature Temperature (Not Including Reference Ladder) TPC 4. Accuracy vs. t TPC 5. Accuracy vs. t TPC 6. Accuracy vs. VREF RD P [VREF = VREF(+) – VREF(–)] TPC 7. Effective Number of Bits vs. TPC 8. tINTL, Internal Time Delay vs. TPC 9. Output Current vs. Input Signal (±2.5 V) Frequency Temperature Temperature –6– REV. B Document Outline FEATURES GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM PRODUCT HIGHLIGHTS SPECIFICATIONS Test Circuits ORDERING GUIDE ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATIONS PIN FUNCTION DESCRIPTIONS TERMINOLOGY LEAST SIGNIFICANT BIT (LSB) TOTAL UNADJUSTED ERROR SLEW RATE TOTAL HARMONIC DISTORTION INTERMODULATION DISTORTION SIGNAL-TO-NOISE RATIO PEAK HARMONIC OR SPURIOUS NOISE Typical Performance Characteristics CIRCUIT INFORMATION BASIC DESCRIPTION OPERATING SEQUENCE REFERENCE AND INPUT INPUT CURRENT INPUT TRANSIENTS INHERENT TRACK-AND-HOLD SINUSOIDAL INPUTS DIGITAL SIGNAL PROCESSING APPLICATIONS SIGNAL-TO-NOISE RATIO AND DISTORTION EFFECTIVE NUMBER OF BITS INTERMODULATION DISTORTION HISTOGRAM PLOT DIGITAL INTERFACE RD Mode (MODE = 0) WR-RD Mode (MODE = 1) MICROPROCESSOR INTERFACING AD7821 – 68008 INTERFACE AD7821 – 8088 INTERFACE AD7821 – TMS32010 INTERFACE AD7821 – 8051 INTERFACE APPLYING THE AD7821 UNIPOLAR OPERATION BIPOLAR OPERATION 16-CHANNEL TELECOM A/D CONVERTER SIMULTANEOUS SAMPLING ADCS OUTLINE DIMENSIONS Revision History
TPC 1. Conversion Time TPC 2. Power Supply Current vs. TPC 3. Accuracy vs. tWR (RD Mode) vs.Temperature Temperature (Not Including Reference Ladder) TPC 4. Accuracy vs. t TPC 5. Accuracy vs. t TPC 6. Accuracy vs. VREF RD P [VREF = VREF(+) – VREF(–)] TPC 7. Effective Number of Bits vs. TPC 8. tINTL, Internal Time Delay vs. TPC 9. Output Current vs. Input Signal (±2.5 V) Frequency Temperature Temperature –6– REV. B Document Outline FEATURES GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM PRODUCT HIGHLIGHTS SPECIFICATIONS Test Circuits ORDERING GUIDE ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATIONS PIN FUNCTION DESCRIPTIONS TERMINOLOGY LEAST SIGNIFICANT BIT (LSB) TOTAL UNADJUSTED ERROR SLEW RATE TOTAL HARMONIC DISTORTION INTERMODULATION DISTORTION SIGNAL-TO-NOISE RATIO PEAK HARMONIC OR SPURIOUS NOISE Typical Performance Characteristics CIRCUIT INFORMATION BASIC DESCRIPTION OPERATING SEQUENCE REFERENCE AND INPUT INPUT CURRENT INPUT TRANSIENTS INHERENT TRACK-AND-HOLD SINUSOIDAL INPUTS DIGITAL SIGNAL PROCESSING APPLICATIONS SIGNAL-TO-NOISE RATIO AND DISTORTION EFFECTIVE NUMBER OF BITS INTERMODULATION DISTORTION HISTOGRAM PLOT DIGITAL INTERFACE RD Mode (MODE = 0) WR-RD Mode (MODE = 1) MICROPROCESSOR INTERFACING AD7821 – 68008 INTERFACE AD7821 – 8088 INTERFACE AD7821 – TMS32010 INTERFACE AD7821 – 8051 INTERFACE APPLYING THE AD7821 UNIPOLAR OPERATION BIPOLAR OPERATION 16-CHANNEL TELECOM A/D CONVERTER SIMULTANEOUS SAMPLING ADCS OUTLINE DIMENSIONS Revision History
