AD7863ARS-2REEL7 Analog Devices Inc, AD7863ARS-2REEL7 Datasheet
AD7863ARS-2REEL7
Specifications of AD7863ARS-2REEL7
Related parts for AD7863ARS-2REEL7
AD7863ARS-2REEL7 Summary of contents
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FEATURES Two fast 14-bit ADCs Four input channels Simultaneous sampling and conversion 5.2 μs conversion time Single supply operation Selection of input ranges ±10 V for AD7863-10 ±2.5 V for AD7863 2.5 V for AD7863-2 High speed ...
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AD7863 TABLE OF CONTENTS Features .............................................................................................. 1 General Description ......................................................................... 1 Functional Block Diagram .............................................................. 1 Product Highlights ........................................................................... 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 Timing Characteristics ................................................................ 5 Absolute Maximum Ratings............................................................ 6 ESD Caution.................................................................................. 6 Pin Configuration and ...
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SPECIFICATIONS ± 5%, AGND = DGND = 0 V, REF = Internal. All specifications T DD Table 1. Parameter SAMPLE AND HOLD −3 dB Small Signal Bandwidth 2 Aperture Delay 2 Aperture Jitter 2 Aperture Delay ...
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AD7863 Parameter REFERENCE INPUT/OUTPUT REF IN Input Voltage Range REF IN Input Current REF OUT Output Voltage REF OUT Error @ 25°C REF OUT Error MIN MAX REF OUT Temperature Coefficient LOGIC INPUTS Input High Voltage, V ...
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TIMING CHARACTERISTICS ± 5%, AGND = DGND = 0 V, REF = Internal. All specifications T DD Table Parameter A, B Versions t 5.2 CONV t 0.5 ACQ Parallel Interface ...
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AD7863 ABSOLUTE MAXIMUM RATINGS T = 25°C, unless otherwise noted. A Table 3. Parameter V to AGND DGND DD Analog Input Voltage to AGND AD7863-10 AD7863-3 AD7863-2 Reference Input Voltage to AGND Digital Input Voltage to DGND ...
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PIN CONFIGURATION AND FUNCTION DESCRIPTIONS Table 4. Pin Function Descriptions Pin No. Mnemonic Description DB12 to DB7 Data Bit 12 to Data Bit 7. Three-state TTL outputs. 7 DGND Digital Ground. Ground reference for digital circuitry. 8 ...
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AD7863 TERMINOLOGY Signal-to-(Noise + Distortion) Ratio This is the measured ratio of signal to (noise + distortion) at the output of the analog-to-digital converter. The signal is the rms amplitude of the fundamental. Noise is the rms sum of all ...
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CONVERTER DETAILS The AD7863 is a high speed, low power, dual 14-bit analog-to- digital converter that operates from a single 5 V supply. The part contains two 5.2 μs successive approximation ADCs, two track-and-hold amplifiers, an internal 2.5 V reference, ...
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AD7863 CIRCUIT DESCRIPTION ANALOG INPUT SECTION The AD7863 is offered as three part types: the AD7863-10, which handles a ±10 V input voltage range, the AD7863-3, which handles input voltage range ±2.5 V and the AD7863-2, which handles a 0 ...
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Gain error can be adjusted at either the first code transition (ADC negative full scale) or the last code transition (ADC positive full scale). The trim procedures for both cases are as follows: Positive Full-Scale Adjust (−10 Version) Apply a ...
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AD7863 Read Options Apart from the read operation previously described and displayed in Figure 7, other CS and RD combinations can result in different channels/inputs being read in different combinations. Suitable combinations are shown in Figure 8, Figure 9, and ...
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OPERATING MODES MODE 1 OPERATION Normal Power, High Sampling Performance The timing diagram in Figure 7 is for optimum performance in operating Mode 1 where the falling edge of CONVST starts conversion and puts the track-and-hold amplifiers into their hold ...
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AD7863 AD7863 DYNAMIC SPECIFICATIONS The AD7863 is specified and tested for dynamic performance as well as traditional dc specifications such as integral and differential nonlinearity. These ac specifications are required for the signal processing applications such as phased array sonar, ...
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TOTAL HARMONIC DISTORTION (THD) Total harmonic distortion (THD) is the ratio of the rms sum of harmonics to the rms value of the fundamental. For the AD7863, THD is defined ...
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AD7863 POWER CONSIDERATIONS In the automatic power-down mode the part can be operated at a sample rate that is considerably less than 175 kHz. In this case, the power consumption is reduced and depends on the sample rate. Figure 18 ...
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MICROPROCESSOR INTERFACING The AD7863 high speed bus timing allows direct interfacing to DSP processors as well as modern 16-bit microprocessors. Suitable microprocessor interfaces are shown in Figure 19 through Figure 23. AD7863 TO ADSP-2100 INTERFACE Figure 19 shows an interface ...
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AD7863 A15 ADDRESS BUS A0 TMS320C25 ADDRESS DECODE IS EN INTn STRB R/W READY MSC DMD15 DATA BUS DMD0 *ADDITIONAL PINS OMITTED FOR CLARITY. Figure 21. AD7863 to TMS320C25 Interface Some applications may require that the conversion be initiated by ...
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Vector control motor involves controlling the phase in addition to drive and current frequency. Controlling the phase of the motor requires feedback information on the position of the rotor relative to the rotating magnetic field in the ...
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AD7863 APPLICATIONS HINTS PC BOARD LAYOUT CONSIDERATIONS The AD7863 is optimally designed for lowest noise performance, both radiated and conducted noise. To complement the excellent noise performance of the AD7863 it is imperative that great care be given to the ...
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OUTLINE DIMENSIONS 28 0.30 (0.0118) 0.10 (0.0039) COPLANARITY 0.10 2.00 MAX 0.05 MIN COPLANARITY 0.10 18.10 (0.7126) 17.70 (0.6969) 15 7.60 (0.2992) 7.40 (0.2913) 1 10.65 (0.4193) 14 10.00 (0.3937) 2.65 (0.1043) 2.35 (0.0925) SEATING 0.51 (0.0201) 1.27 (0.0500) PLANE ...
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... V AD7863AR 2.5 V AD7863AR-2REEL 2.5 V AD7863AR-2REEL7 2 AD7863ARZ 2 AD7863ARZ-2REEL 2 AD7863ARZ-2REEL7 2.5 V AD7863ARS 2.5 V AD7863ARS-2REEL 2.5 V AD7863ARS-2REEL7 2 AD7863ARSZ 2.5 V AD7863ARSZ-2REEL 2 AD7863ARSZ-2REEL7 2.5 V EVAL-AD7863CB Pb-free part. Relative Accuracy Temperature Range ±2.5 LSB –40°C to +85°C ±2.5 LSB –40°C to +85°C ±2.5 LSB – ...
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NOTES Rev Page AD7863 ...
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AD7863 NOTES ©2006 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D06411-0-11/06(B) Rev Page ...