AD7828 AD [Analog Devices], AD7828 Datasheet

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... The AD7824 and AD7828 operate from a single 5 V supply and have an analog input range using an external 5 V reference. Microprocessor interfacing of the parts is simple, using standard Chip Select (CS) and Read (RD) signals to initiate the conversion and read the data from the three-state data outputs ...

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... AD7824/AD7828–SPECIFICATIONS noted. All specifications unless otherwise noted. Specifications apply to Mode 0.) MIN MAX Parameter K Version ACCURACY Resolution 8 ± Total Unadjusted Error Minimum Resolution for which No Missing Codes Are Guaranteed 8 ± 1/4 Channel-to-Channel Mismatch REFERENCE INPUT Input Resistance 1.0/4.0 V (+) Input Voltage Range ...

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... V) and timed from a voltage level of 1.6 V. RISE FALL Figure 2. Load Circuits for Data Hold Time Test –3– AD7824/AD7828 Unit Conditions/Comments Setup Time ns min Hold Time ns min ns min Multiplexer Address Setup Time ns min Multiplexer Address Hold Time CS to RDY Delay ...

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... ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although AD7824/AD7828 feature proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality ...

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... INPUT FREQUENCY – kHz TPC 3. Signal Noise Ratio vs. Input Frequency REV. F Typical Performance Characteristics–AD7824/AD7828 100 150 –100 TPC 4. Power Supply Current vs. Temperature (Not Including Reference Ladder) 2 ...

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... AD7824/AD7828 OPERATIONAL DIAGRAM The AD7824 is a 4-channel 8-bit ADC and the AD7828 is an 8-channel 8-bit ADC. Operational diagrams for both of these devices are shown in Figures 3 and 4. The addition of just reference allows the devices to perform the analog-to-digital function. AIN4 ...

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... The AD7824/AD7828 input comparators, by nature of their input switching, inherently 1pF accomplish this sample-and-hold function. Although the conver- sion time for AD7824/AD7828 is 2 µs, the time for which any • selected analog input must be 1/2 LSB stable is much smaller. 1pF • ...

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... AD7824/AD7828 UNIPOLAR OPERATION The analog input range for any channel of the AD7824/AD7828 shown in the unipolar operational diagram of Figure 10. Figure 11 shows the designed code transitions that occur midway between successive integer LSB values (i.e., 1/2 LSB, 3/2 LSB, 5/2 LSB, FS 3/2 LSBs). The output code is natural binary with 1 LSB = FS/256 = (5/256 ...

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... There are two converter status outputs on the AD7824/AD7828, interrupt (INT) and ready (RDY), which can be used to drive the microprocessor READY/WAIT input. The RDY is an open-drain output (no internal pull-up device) that ...

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... RDY RD TMS32010 MICROCOMPUTER DB7 A TMS32010 interface is shown in Figure 18. The AD7824/ AD7828 is operating in Mode 1 (i.e., no µP WAIT states). The DB0 ADC is mapped at a port address. The following I/O instruction starts a conversion and reads the previous conversion result into the accumulator. IN (PA = PORT ADDRESS) The port address (000 to 111) selects the analog channel to be converted ...

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... MIN SEATING 0.022 (0.558) 0.70 (1.77) PLANE 0.30 (0.77) 0.014 (0.356) COMPLIANT TO JEDEC STANDARDS MS-011AB CONTROLLING DIMENSIONS ARE IN INCHES; MILLIMETER DIMENSIONS (IN PARENTHESES) ARE ROUNDED-OFF INCH EQUIVALENTS FOR REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN –11– AD7824/AD7828 SAMPLE 15V 5V PULSE ...

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... AD7824/AD7828 0.30 (0.0118) 0.10 (0.0039) COPLANARITY 0.10 0.30 (0.0118) 0.10 (0.0039) COPLANARITY 0.10 OUTLINE DIMENSIONS 24-Lead Standard Small Outline Package [SOIC] Wide Body (R-24) Dimensions shown in millimeters and (inches) 15.60 (0.6142) 15.20 (0.5984 7.60 (0.2992) 7.40 (0.2913) 10.65 (0.4193 10.00 (0.3937) 2.65 (0.1043) 2.35 (0.0925) SEATING 1.27 (0.0500) 0.51 (0.020) 0.32 (0.0126) BSC PLANE 0.33 (0.013) 0.23 (0.0091) COMPLIANT TO JEDEC STANDARDS MS-013AD CONTROLLING DIMENSIONS ARE IN MILLIMETERS ...

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... SQ 0.075 (1.91) REF 12 11 0.088 (2.24) 0.055 (1.40) 0.054 (1.37) 0.045 (1.14) CONTROLLING DIMENSIONS ARE IN INCHES; MILLIMETER DIMENSIONS (IN PARENTHESES) ARE ROUNDED-OFF INCH EQUIVALENTS FOR REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN –13– AD7824/AD7828 0.320 (8.13) 0.290 (7.37) 0.015 (0.38) 0.008 (0.20 0.620 (15.75) 0.590 (14.99) 0.018 (0.46) 0.008 (0.20 0.300 (7.62) REF 0 ...

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... AD7824/AD7828 2.00 MAX 0.05 MIN 0.048 (1.22) 0.042 (1.07) 4 0.048 (1.22) 5 0.042 (1.07) TOP VIEW (PINS DOWN 0.456 (11.582) 0.450 (11.430) 0.495 (12.57) 0.485 (12.32) OUTLINE DIMENSIONS 28-Lead Shrink Small Outline Package [SSOP] (RS-28) Dimensions shown in millimeters 10.50 10.20 9. 5.60 8.20 5.30 7.80 5.00 7. 1.85 1.75 0.10 1.65 COPLANARITY 0.25 0.09 0.38 0.65 BSC 0.22 SEATING PLANE COMPLIANT TO JEDEC STANDARDS MO-150AH 28-Lead Plastic Leaded Chip Carrier [PLCC] ...

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... Edits to DIP/SOIC/SSOP, LCCC, AND PLCC Pin Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Edit to Figure Edits to Circuit Information Basic Description section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Edits to Input Current section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Edit to Figure Edit to Figure Updated OUTLINE DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 4/02—Data Sheet changed from REV REV. E. Edits to ORDERING GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 REV. F AD7824/AD7828 –15– Page ...

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