AD561 Analog Devices, AD561 Datasheet
AD561
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AD561 Summary of contents
Page 1
... K and T versions, 60 ppm/ C max for the S, and 80 ppm/ C for the J. The AD561 is available in four performance grades. The AD561J and K are specified for use over the +70 C temperature range and are available in either a 16-pin REV. A Information furnished by Analog Devices is believed to be accurate and reliable ...
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... Full-Scale Error with Fixed 25 ` Resistor Bipolar Zero Error with Fixed 10 Resistor CALIBRATION ADJUSTMENT RANGE Full Scale (With 50 Trimmer) Bipolar Zero (With 50 Trimmer) NOTES *Specifications same as AD561J specifications. Specifications subject to change without notice + –15 V, unless otherwise noted AD561J Min Typ Max 10 Bits ...
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... CALIBRATION ACCURACY Full-Scale Error with Fixed 25 Resistor Bipolar Zero Error with Fixed 10 Resistor CALIBRATION ADJUSTMENT RANGE Full Scale (With 50 Trimmer) Bipolar Zero (With 50 Trimmer) NOTES **Specifications same as AD561S specifications. Specifications subject to change without notice. REV. A AD561S Min Typ Max Min 10 Bits 1/4 1/2 (0.025) (0 ...
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... If in actual use, however LSB change in the input code results in a change of only 2.45 mV (1/4 LSB) in analog output, the differential nonlinearity error would be 7.35 mV, or 3/4 LSB The AD561K and T have a max differen- tial linearity error of 1/2 LSB. The differential nonlinearity temperature coefficient must also be considered if the device is to remain monotonic over its full operating temperature range ...
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... VOLT BUFFERED BIPOLAR OUTPUT The AD561 can also be connected for a 10 volt bipolar range with an additional external resistor as shown in Figure 4. A larger value trimmer is required to compensate for tolerance in the thin film resistors, which are trimmed to match the full-scale current. For best full scale temperature coefficient performance, the external resistors should have – ...
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... Figure 9. In this case, the settling time is primarily determined by the cell switching time and by the RC time constant of the AD561 output capaci- tance of 25 picofarads (plus stray capacitance) combined with the output resistor value. Settling to 0.05% of full scale (for a full- scale transition) requires 7.6 time constants. This effect is important for R > ...
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... Figure 8. Unbuffered Bipolar Voltage Output HIGH SPEED 10-BIT A/D CONVERTERS The fast settling characteristics of the AD561 make it ideal for high speed successive approximation A/D converters. The internal reference and trimmed application resistors allow a 10-bit converter system to be constructed with a minimum parts count. Shown here is a configuration using standard compo- nents ...
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... Because of this, a staged clock, which speeds up for lower bits will improve the speed. Also, a faster comparator and Schottky TTL or ECL logic would be necessary. 10-bit convert- ers in the range could be built around the AD561 with these techniques. DIGITAL 4-TO- 1-TO-5 VOLT CONVERTER A direct digital 4-to- 1-to-5 volt line driver can be built with the AD561 as shown in Figure 10 ...