AD5260 Analog Devices, AD5260 Datasheet
AD5260
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AD5260 Summary of contents
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... These devices perform the same electronic adjustment function as a potentiometer or variable resistor. Each channel of the AD5260/ AD5262 contains a fixed resistor with a wiper contact that taps the fixed resistor value at a point determined by a digital code loaded into the SPI-compatible serial-input register ...
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... AD5260/AD5262–SPECIFICATIONS ELECTRICAL CHARACTERISTICS 20 kW, 50 kW, 200 kW VERSIONS Parameter DC CHARACTERISTICS RHEOSTAT MODE Specifications apply to all VRs 2 Resistor Differential NL 2 Resistor Nonlinearity 3 Nominal Resistor Tolerance Resistance Temperature Coefficient Wiper Resistance Channel Resistance Matching (AD5262 only) R Resistance Drift DC CHARACTERISTICS POTENTIOMETER DIVIDER MODE Specifications apply to all VRs ...
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... Reset Pulsewidth CLK Fall to CS Rise Hold Time CS Rise to Clock Rise Setup NOTES The AD5260/AD5262 contains 1,968 transistors. Die Size: 89 mil. × 105 mil. 9,345 sq. mil. 1 Typicals represent average readings at 25°C and V 2 Resistor position nonlinearity error R-INL is the deviation from an ideal value measured between the maximum resistance and the minimum resistance wiper positions. ...
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... ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although the AD5260/AD5262 features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high-energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality ...
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... Table I. AD5260 8-Bit Serial-Data Word Format DATA MSB SDI CLK 0 1 RDAC REGISTER LOAD OUT 0 Figure 2a. AD5260 Timing Diagram 1 SDI CLK 0 1 RDAC REGISTER LOAD ...
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... AD5260 TOP VIEW SHDN 5 10 (Not to Scale) CLK 9 6 SDI 8 7 AD5260 PIN FUNCTION DESCRIPTIONS Pin Number Mnemonic Description Terminal 2 W Wiper Terminal Terminal 4 V Positive power supply, specified DD for operation at both (Sum of |V ...
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... AD5262 address assignment to decode the location of the VR latch receiving the serial register data in bits B7 through B0. VR outputs can be changed one at a time in random sequence. The AD5260/ AD5262 presets to a mid-scale, simplifying fault condition recov- ery at power-up. Mid-scale can also be achieved at any time by asserting the PR pin ...
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... RDAC STRUCTURE The RDAC contains a string of equal resistor segments, with an will be clamped by the array of analog switches, that act as the wiper connection. The number of positions is the resolution of the device. The AD5260/ AD5262 have 256 connection points allowing it to provide better V DD than 0.4% set-ability resolution. Figure 11 shows an equivalent ...
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... W and B in this state to no more than avoid degradation or possible destruction of the internal switches. Like the mechanical potentiometer the RDAC replaces, the AD5260/AD5262 parts are totally symmetrical. The resistance between the wiper W and terminal A also produces a digitally controlled complementary resistance R symmetrical programmability of the various terminal connections ...
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... AD5260/AD5262 —Typical Performance Characteristics 0.8 0.7 5V 0.6 0.5 0.4 0.3 12V 0.2 5V 0.1 0 –0.1 15V –0 128 160 192 224 256 CODE – Decimal TPC 1. R-INL vs. Code vs. Supply Voltages 0.5 0 0.1 0 –0.1 –0.2 –0 125 C A –0.4 –0 128 160 192 224 256 CODE – ...
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... Digital Input LOGIC Voltage –6 –12 –18 –24 –30 –36 –42 –48 –54 96 128 160 192 224 256 1k CODE – Decimal TPC 17. Gain vs. Frequency vs. Code, R –11– AD5260/AD5262 LOGIC 0 15V/ 0. 0.001 100 – ...
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... AD5260/AD5262 CODE = – – – – – – – –48 –54 1k 10k 100k 1M FREQUENCY – Hz TPC 18. Gain vs. Frequency vs. Code = CODE = 20k ...
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... Test Circuit 4. Power Supply Sensitivity (PSS, PSSR OFFSET /R NOMINAL = [V – MS1 MS2 Test Circuit 6. Incremental ON Resistance Test Circuit 7. Common-Mode Leakage Current –13– AD5260/AD5262 40 CODE SET TO MID-SCALE T = 150 LOTS SAMPLE SIZE = 135 –0.50 –0.40 –0.30 –0.20 –0.10 500 CHANNEL-TO-CHANNEL R AB TPC 29 ...
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... WA WB drift reduces to 5 ppm/∞C. APPLICATIONS Bipolar Operation from Dual Supplies The AD5260/AD5262 can be operated from dual supplies enabling control of ground referenced AC signals or bipolar operation. The AC signal, as high can be applied directly across DD SS terminals A– ...
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... V SS Figure 17. Bipolar Programmable Gain Amplifier REV. 0 Similar to the previous example, in the simpler (and much more usual) case, where single digital pot AD5260, and U1 is replaced by a matched pair of resistors to apply V the ends of the digital pot. The relationship becomes: Ê = Á ...
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... 150k C2 10pF +5V +15V A R1 AD5260 150k W OP2177 B A1 –5V –15V Figure 20. Programmable Bidirectional Current Source Programmable Low-Pass Filter . Digital potentiometer AD5262 can be used to construct a second S order Sallen Key Low-Pass Filter (see Figure 21). The design equations are: ...
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... Figure 22. Programmable Oscillator with Amplitude Control Resistance Scaling The AD5260/AD5262 offer 20 kW, 50 kW, and 200 kW nominal resistance. For users who need lower resistance and still maintain the numbers of step adjustment, they can parallel multiple devices. For example, Figure 23 shows a simple scheme of paralleling both channels of the AD5262 ...
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... Voltage Data Number Package Range (V) Control ± 3, 5.5 AD5201 1 3-Wire AD5220 1 5.5 UP/DOWN ± 15, 28 AD7376 1 3-Wire ± 3, 5.5 AD5200 1 3-Wire AD8400 1 5.5 3-Wire ± AD5260 1 3-Wire ± 3, 5.5 AD5241 1 2-Wire ± 2.75, 5.5 AD5231 1 3-Wire ± 3, 5.5 AD5222 2 UP/DOWN AD8402 2 5.5 3-Wire ± 3, 5.5 AD5207 2 3-Wire ± 2.75, 5.5 AD5232 2 3-Wire ± ...
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... MAX 0.002 (0.05) 8 0.0256 0.0118 (0.30) 0 0.0079 (0.20) (0.65) 0.0075 (0.19) PLANE 0.0035 (0.090) BSC 16-Lead TSSOP (RU-16) 0.201 (5.10) 0.193 (4.90 0.177 (4.50) 0.169 (4.30) 0.256 (6.50) 0.246 (6.25 PIN 1 0.006 (0.15) 0.0433 (1.10) MAX 0.002 (0.05 0.0256 (0.65) 0.0118 (0.30) 0.0079 (0.20) BSC 0.0075 (0.19) PLANE 0.0035 (0.090) –19– AD5260/AD5262 0.028 (0.70) 0.020 (0.50) 0.028 (0.70) 0.020 (0.50) ...
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