Electronic Components Datasheet Search |
|
AD532J Datasheet(PDF) 6 Page - Analog Devices |
|
AD532J Datasheet(HTML) 6 Page - Analog Devices |
6 / 7 page AD532 –6– REV. B APPLICATIONS MULTIPLICATION Z OUT AD532 X1 X2 Y1 Y2 VOUT VOS 20k +VS –VS (OPTIONAL) VOUT = (X1 – X2) (Y1 – Y2) 10V Figure 11. Multiplier Connection For operation as a multiplier, the AD532 should be connected as shown in Figure 11. The inputs can be fed differentially to the X and Y inputs, or single-ended by simply grounding the unused input. Connect the inputs according to the desired po- larity in the output. The Z terminal is tied to the output to close the feedback loop around the op amp (see Figure 1). The offset adjust VOS is optional and is adjusted when both inputs are zero volts to obtain zero out, or to buck out other system offsets. SQUARE Z OUT AD532 VOUT VOS 20k +VS –VS (OPTIONAL) VOUT = VIN2 10V VIN X1 X2 Y1 Y2 –VS +VS Figure 12. Squarer Connection The squaring circuit in Figure 12 is a simple variation of the multiplier. The differential input capability of the AD532, how- ever, can be used to obtain a positive or negative output re- sponse to the input . . . a useful feature for control applications, as it might eliminate the need for an additional inverter somewhere else. DIVISION Z OUT AD532 Z VOUT +VS 20k (X0) +VS –VS VOUT = 10VZ X X X1 X2 Y1 Y2 1k (SF) 10k 47k –VS 2.2k Figure 13. Divider Connection The AD532 can be configured as a two-quadrant divider by connecting the multiplier cell in the feedback loop of the op amp and using the Z terminal as a signal input, as shown in Figure 13. It should be noted, however, that the output error is given approximately by 10 V m/(X1 – X2), where m is the total error specification for the multiply mode; and bandwidth by fm × (X1 – X2)/10 V, where fm is the bandwidth of the multiplier. Further, to avoid positive feedback, the X input is restricted to negative values. Thus for single-ended negative inputs (0 V to –10 V), connect the input to X and the offset null to X2; for single-ended positive inputs (0 V to +10 V), connect the input to X2 and the offset null to X1. For optimum performance, gain (S.F.) and offset (X0) adjustments are recommended as shown and explained in Table I. For practical reasons, the useful range in denominator input is approximately 500 mV ≤ |(X 1 – X2)| ≤ 10 V. The voltage offset adjust (VOS), if used, is trimmed with Z at zero and (X1 – X2) at full scale. Table I. Adjust Procedure (Divider or Square Rooter) DIVIDER SQUARE ROOTER Adjust Adjust With: for: With: for: Adjust X Z VOUT ZVOUT Scale Factor –10 V +10 V –10 V +10 V –10 V X0 (Offset) –1 V +0.1 V –1 V +0.1 V –1 V Repeat if required. SQUARE ROOT Z OUT AD532 Z VOUT +VS 20k (X0) +VS –VS VOUT = 10VZ X1 X2 Y1 Y2 1k (SF) 10k 47k –VS 2.2k Figure 14. Square Rooter Connection The connections for square root mode are shown in Figure 14. Similar to the divide mode, the multiplier cell is connected in the feedback of the op amp by connecting the output back to both the X and Y inputs. The diode D1 is connected as shown to prevent latch-up as ZIN approaches 0 volts. In this case, the VOS adjustment is made with ZIN = +0.1 V dc, adjusting VOS to obtain –1.0 V dc in the output, VOUT = – √10 V Z. For optimum performance, gain (S.F.) and offset (X0) adjustments are recom- mended as shown and explained in Table I. DIFFERENCE OF SQUARES Z OUT AD532 VOUT VOS 20k +VS –VS (OPTIONAL) VOUT = X2 – Y2 10V X1 X2 Y1 Y2 –VS +VS 20k 10k AD741KH 20k –Y X Y Figure 15. Differential of Squares Connection The differential input capability of the AD532 allows for the algebraic solution of several interesting functions, such as the difference of squares, X2 – Y2/10 V. As shown in Figure 15, the AD532 is configured in the square mode, with a simple unity gain inverter connected between one of the signal inputs (Y) and one of the inverting input terminals (–YIN) of the multiplier. The inverter should use precision (0.1%) resistors or be other- wise trimmed for unity gain for best accuracy. |
Similar Part No. - AD532J |
|
Similar Description - AD532J |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.NET |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |