EVAL-AD7866CB AD [Analog Devices], EVAL-AD7866CB Datasheet
EVAL-AD7866CB
Related parts for EVAL-AD7866CB
EVAL-AD7866CB Summary of contents
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GENERAL DESCRIPTION The AD7866 is a dual 12-bit high-speed, low power, successive- approximation ADC. The part operates from a single 2 5.25 V power supply and features throughput rates MSPS. The device contains two ...
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AD7866–SPECIFICATIONS Parameter DYNAMIC PERFORMANCE Signal to Noise + Distortion (SINAD) 2 Total Harmonic Distortion (THD) Peak Harmonic or Spurious Noise (SFDR) 2 Intermodulation Distortion (IMD) Second Order Terms Third Order Terms Channel to Channel Isolation SAMPLE AND HOLD 3 Aperture ...
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Parameter CONVERSION RATE Conversion Time 3 Track/Hold Acquisition Time Throughput Rate POWER REQUIREMENTS DRIVE Normal Mode (Static) Operational MSPS S Partial Power-Down Mode Partial Power-Down Mode Full Power-Down Mode 7 Power ...
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AD7866 1 TIMING SPECIFICATIONS Limit at Parameter Unit MIN MAX kHz min SCLK 20 MHz max 16 × max CONVERT SCLK 800 ns max max QUIET t 10 ...
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... Model Temperature Range AD7866ARU –40°C to +85°C AD7866BRU –40°C to +85°C 1 EVAL-AD7866CB Evaluation Board 2 EVAL-CONTROL BRD2 Controller Board NOTES 1 This can be used as a stand-alone evaluation board or in conjunction with the evaluation board controller for evaluation/demonstration purposes. 2 This evaluation board controller is a complete unit, allowing control and communicate with all Analog Devices evaluation boards ending in the CB designators. ...
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AD7866 Pin No. Mnemonic Function 11 RANGE Analog Input Range and Output Coding Selection Pin. Logic Input. The polarity on this pin will determine what input range the analog input channels on the AD7866 will have, and it will also ...
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TERMINOLOGY Integral Nonlinearity This is the maximum deviation from a straight line passing through the endpoints of the ADC transfer function. The end- points of the transfer function are zero scale, a point 1 LSB below the first code transition, ...
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AD7866 PERFORMANCE CURVES TPC 1 shows a typical FFT plot for the AD7866 at 1 MHz sample rate and 300 kHz input frequency. TPC 2 shows the signal-to- (noise + distortion) ratio performance versus input frequency for various supply voltages ...
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SINEWAVE –10 2.5V EXT REFERENCE ON V REF –20 –30 –40 –50 – 2.7V DD –70 – 3.6V DD –90 –100 1k 10k 100k AV ...
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AD7866 CIRCUIT INFORMATION The AD7866 is a fast, micropower, dual 12-bit, single supply, A/D converter that operates from a 2 5.25 V supply. When operated from either supply supply, the AD7866 ...
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REF from the part will be straight binary (for the next conversion). If this pin logic high when CS goes low, then the analog input range will be ...
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AD7866 A CS SCLK RANGE D A OUT D B OUT A CS SCLK RANGE D A OUT D B OUT 111...111 111...110 111...000 1LSB = V 011...111 000...010 000...001 000...000 ...
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Digital Inputs The digital inputs applied to the AD7866 are not limited by the maximum ratings which limit the analog inputs. Instead, the digital inputs applied can and are not restricted by the V + 0.3 ...
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AD7866 EXT REF 100nF REF CAP 2.5V BUF A REF BUF CAP EXT REF be taken from either the V pin or one of the D REF pins taken from the ...
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To enter Partial Power-Down, the conversion process must be interrupted by bringing CS high anywhere after the second falling edge of SCLK and before the 10th falling edge of SCLK as shown in Figure 17. Once CS has been brought ...
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AD7866 THE PART ENTERS PARTIAL POWER-DOWN SCLK D A OUT INVALID DATA D B OUT THE PART BEGINS TO POWER SCLK D A OUT INVALID DATA D B OUT time is typically 4 µs; ...
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POWER VERSUS THROUGHPUT RATE By using the Partial Power-Down mode on the AD7866 when not converting, the average power consumption of the ADC decreases at lower throughput rates. Figure 21 shows how as the throughput rate is reduced, the part ...
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AD7866 Bit Bit Name Comment 15 ZERO Leading Zero. This bit will always be a zero output. 14 RANGE The polarity of this bit reflects the analog input range that has been selected with the RANGE pin ...
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For example, if the ADSP-2189 had a 20 MHz crystal, such that it had a master clock frequency of 40 MHz then the master cycle time would be 25 ns. If the SCLKDIV register is loaded with the value 3, ...
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... PC via the EVAL- BOARD CONTROLLER. The EVAL-BOARD CONTROLLER can be used in conjunction with the AD7866 Evaluation board, as well as many other Analog Devices evaluation boards ending in the CB designator, to demonstrate/evaluate the ac and dc performance of the AD7866. The software allows the user to perform ac (fast Fourier transform) and dc (histogram of codes) tests on the AD7866 ...