AD2S82 AD [Analog Devices], AD2S82 Datasheet
AD2S82
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AD2S82 Summary of contents
Page 1
... Monolithic. A one-chip solution reduces the package size re- quired and increases the reliability. Resolution Set by User. Two control pins are used to select the resolution of the AD2S82A to be 10, 12 bits al- lowing the user to use the AD2S82A with the optimum resolu- tion for each application. ...
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... S Logic LO Allows –2– = +25 C, unless otherwise noted) AD2S82A Min Typ Max 50 20,000 1.8 2.0 2.2 60 150 1 20,000 1.0 8.0 60 150 1.0 1 –10 +10 1040 260 65 16. LSB LSB LSB LSB LSB ...
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... Refers to small signal bandwidth. 2 Output offset dependent on value for R6. 3 Refer to timing diagram. 4 AD2S82A only. 5 These pins are referenced to +V (i.e + V). S Specifications subject to change without notice. All min and max specifications are guaranteed. Specifications in boldface are tested on all production units at final electrical test. ...
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... Body Model) and fast, low energy pulses (Charges Device Model AD2S81A and AD2S82A is ESD protection Class II (2000 V min). Proper ESD precautions are strongly recommended to avoid functional damage or performance degradation. For further informa- tion on ESD precautions, refer to Analog Devices ESD Prevention Manual. ...
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... Storage Temperature (All Grades – +150 C Lead Temperature (Soldering, 10 sec +300 C CAUTION 1. Absolute Maximum Ratings are those values beyond which damage to the device may occur. 2. Correct polarity voltages must be maintained on the +V AD2S81A/AD2S82A PIN CONFIGURATIONS Seconds /Bit 1296000.0 648000.0 324000.0 SIN O/P 162000 ...
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... HP FILTER ERROR DEMOD O/P I/P PHASE-SENSITIVE DETECTOR R-2R DAC A3 AD2S82A OUTPUT DATA LATCH +5V DIGITAL BUSY 16 DATA BITS GND BYTE SELECT Figure 1a. AD2S82A Connection Diagram REFERENCE I FILTER ERROR DEMOD O/P I/P PHASE-SENSITIVE DETECTOR R-2R DAC A3 AD2S81A DATA TRANSFER BYTE BUSY +5V DIGITAL 8 DATA BITS ...
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... CONVERTER RESOLUTION (AD2S82A ONLY) Two major areas of the AD2S82A specification can be selected by the user to optimize the total system performance. The reso- lution of the digital output is set by the logic state of the inputs SC1 and SC2 to be 10, 12 bits and the dynamic char- acteristics of bandwidth and tracking rate are selected by the choice of external components ...
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... The components should be connected as shown in Figure 1. PC compatible software is available to help users select the optimum component values for the AD2S81A and AD2S82A, and display the transfer gain, phase and small step response. For more detailed information and explanation, see the Circuit Functions and Dynamic Performance section ...
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... When used in conjunction with DATA LOAD, strobing DATA LOAD and COMPLEMENT pins to logic LO, will set the logic HIGH bits of the AD2S82A counter state. Those bits of the applied data which are logic LO will not change the corre- sponding bits in the AD2S82A counter: ...
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... This is particularly true of the Ratio Multiplier which – can be used as a control transformer (see Application Note). TO BUSY block diagram of the AD2S81A/AD2S82A is given in TO NEXT BUSY Figure 4. TO DATA DATA V ...
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... Integrator A1 The integrator components (R4, C4, R5, C5) are external to the AD2S81A/AD2S82A to allow the user to determine the optimum dynamic characteristics for any given application. The Component Selection section explains how to select compo- nents for a chosen bandwidth. Since the output from the integrator is fed to the VCO INPUT proportional to velocity (rate of change of output angle) and can be scaled by selection of R6, the VCO input resistor ...
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... given approximately sec –3 –6 –9 –12 0.02 0.04 0.1 0.2 0.4 f FREQUENCY – BW Figure 6. AD2S81A/AD2S82A Gain Plot 180 135 –45 –90 0.02 0.04 0.1 0.2 0.4 f FREQUENCY – BW Figure 7. AD2S81A/AD2S82A Phase Plot REV. B ...
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... POSITION t 1 Figure 8. AD2S81A/AD2S82A Small Step Response The large signal step response (for steps greater than 5 degrees) applies when the error voltage exceeds the linear range of the converter. Typically the converter will take three times longer to reach the first peak for a 179 degrees step. ...
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... This signal can be used to stabilize servo loops or in the place of a velocity transducer. Although the conversion loop of the AD2S81A/AD2S82A includes a digital section, there is an additional analog feedback loop around the velocity signal. This ensures against flicker in the digital posi- tional output in both dynamic and static states ...
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... AC ERROR output as SIN t sin ( – the DEMOD output as sin ( – use the AD2S81A/AD2S82A in this mode refer to the “Control Transformer” application note. Dynamic Switching In applications where the user requires wide band response from ...
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... AD2S81A/AD2S82A 0.005 (0.13) MIN 0.225 (5.72) MAX 0.200 (5.08) 0.125 (3.18) 0.048 (1.21) 0.042 (1.07) OUTLINE DIMENSIONS Dimensions shown in inches and (mm). Ceramic DIP (D) Package (D-28) 0.100 (2.54) MAX 28 15 0.610 (15.49) 0.500 (12.70 PIN 1 1.490 (37.85) MAX 0.060 (1.52) 0.015 (0.38) 0.150 (3.81) MIN SEATING 0.026 (0.66) 0.110 (2.79) 0.070 (1.78) PLANE 0.014 (0.36) 0.090 (2.29) 0.030 (0.76) Plastic Leaded Chip Carrier (P) Package (P-44A) 0 ...