Datasheet

ManualsBrandsANALOG DEVICES ManualsData collecting ICsData acquisition IC - Digital potentiometer linear Non-permanent MSOP 8

Summary of content (11 pages)

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AD5220–SPECIFICATIONS (V = +3 V ⴞ 10% or +5 V ⴞ 10%, V = +V , V = 0 V, –40ⴗC < T < +85ⴗC unless DD A ELECTRICAL CHARACTERISTICS otherwise noted) Parameter Symbol DD B Conditions DC CHARACTERISTICS RHEOSTAT MODE Specifications Apply to All VRs Resistor Differential NL2 R-DNL RWB, VA = NC, RAB = 10 kΩ RWB, VA = NC, RAB = 50 kΩ or 100 kΩ R-INL RWB, VA = NC, RAB = 10 kΩ Resistor Nonlinearity2 RWB, VA = NC, RAB = 50 kΩ or 100 kΩ Nominal Resistor Tolerance ∆R TA = +25°C VAB = VDD, Wiper = No Connect Resist
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AD5220 ABSOLUTE MAXIMUM RATINGS* PIN CONFIGURATION (TA = +25°C, unless otherwise noted) VDD to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V, +7 V VA, VB, VW to GND . . . . . . . . . . . . . . . . . . . . . . . . . . 0 V, VDD AX–BX, AX–WX, BX–WX . . . . . . . . . . . . . . . . . . . . . . ± 20 mA Digital Input Voltage to GND . . . . . . . . . . . 0 V, VDD + 0.3 V Operating Temperature Range . . . . . . . . . . . –40°C to +85°C Maximum Junction Temperature (TJ MAX) . . . . . . . .
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AD5220–Typical Performance Characteristics 5 SS = 300 UNITS VDD = +2.7V TA = +258C 40 50 FREQUENCY 4 VWB – V 3 2 40H 1 RWB 08H 20H 10H RWA 0 0 32 64 96 CODE – Decimal 128 Figure 4. Wiper to End Terminal Resistance vs. Code 0 04H 02H 01H 8 120 20 0.3 0.2 RINL – LSB 50kV VERSION 0.1 0.0 –0.1 0.3 50kV VERSION 0.1 0.0 –0.1 –0.2 –0.2 10kV VERSION 50kV VERSION 0.2 0.1 0.0 –0.1 TA = +258C VDD = +5.5V VA = +5.5V VB = 0V –0.2 10kV VERSION –0.3 –0.3 0.4 100kV VERSION 0.
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46 39 10kV VERSION 32 25 50kV AND 100kV VERSION 18 11 4 –3 –10 0 16 32 48 64 80 96 CODE – Decimal 112 128 32 25 18 50kV AND 100kV VERSION 40H 20H GAIN – dB 10H –18 08H –24 04H –30 02H –36 VDD = +5V A VIN = VA = 100mV rms VB = +2.5V B –54 1k – W + + 2.5V – 16 32 48 64 80 96 CODE – Decimal –6 40H –12 20H 02H 01H DATA = 40H VDD = +5V VIN = VA = 100mV rms VB = +2.5V –54 1k 112 128 – A B W + + 2.5V – OP42 1M 10k 100k FREQUENCY – Hz Figure 15. 10 kΩ Gain vs. Frequency vs.
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AD5220 80 400 IDD – SUPPLY CURRENT – mA 350 PSRR – dB 60 40 VDD = +5V DC 61V p-p AC 20 TA = +258C CODE = 40H CL = 10pF VA = 4V, VB = 0V VDD = +2.7V 250 VDD = +5.5V VA = +5.5V 200 150 VDD = +2.7V VA = +2.7V 100 10k 100k FREQUENCY – Hz 40 VDD = +5.5V 20 50 1M 0 1k Figure 22. Power Supply Rejection vs. Frequency 10k 100k 1M CLOCK FREQUENCY – Hz 10M Figure 23. IDD Supply Current vs. Clock Frequency 0.10 0 1 2 3 4 VB – Volts 6 5 Figure 24. Incremental Wiper Contact Resistance vs.
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Parametric Test Circuits– AD5220 V+ = VDD 1LSB = V+/128 DUT A W V+ VIN A DUT B ~ W +5V OP279 B OFFSET GND VMS Figure 27. Potentiometer Divider Nonlinearity Error Test Circuit (INL, DNL) VOUT 2.5V DC Figure 31. Inverting Programmable Gain Test Circuit +5V NO CONNECT DUT A W IW VIN OFFSET GND B 2.5V VMS Figure 28. Resistor Position Nonlinearity Error (Rheostat Operation; R-INL, R-DNL) ~ W A DUT VMS2 IW = VDD/RNOMINAL VIN VW +15V ~ W DUT B OFFSET GND B VMS1 B Figure 32.
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AD5220 OPERATION Ax The AD5220 provides a 128-position digitally controlled variable resistor (VR) device. Changing the VR settings is accomplished by pulsing the CLK pin while CS is active low. The direction of the increment is controlled by the U/D (UP/DOWN) control input pin. When the wiper hits the end of the resistor (Terminals A or B) additional CLK pulses no longer change the wiper setting. The wiper position is immediately decoded by the wiper decode logic changing the wiper resistance.
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AD5220 PROGRAMMING THE POTENTIOMETER DIVIDER Voltage Output Operation APPLICATIONS INFORMATION The negative-edge sensitive CLK pin does not contain any internal debounce circuitry. This standard CMOS logic input responds to fast negative edges and needs to be debounced externally with an appropriate circuit designed for the type of switch closure device being used. Good performance results at the CLK input pin when the negative logic transition has a minimum slew rate of 1 V/µs.
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AD5220 OUTLINE DIMENSIONS 0.400 (10.16) 0.365 (9.27) 0.355 (9.02) 8 5 1 4 0.280 (7.11) 0.250 (6.35) 0.240 (6.10) 0.325 (8.26) 0.310 (7.87) 0.300 (7.62) 0.100 (2.54) BSC 0.060 (1.52) MAX 0.210 (5.33) MAX 0.015 (0.38) MIN 0.150 (3.81) 0.130 (3.30) 0.115 (2.92) SEATING PLANE 0.022 (0.56) 0.018 (0.46) 0.014 (0.36) 0.195 (4.95) 0.130 (3.30) 0.115 (2.92) 0.015 (0.38) GAUGE PLANE 0.014 (0.36) 0.010 (0.25) 0.008 (0.20) 0.430 (10.92) MAX 0.005 (0.13) MIN 0.070 (1.78) 0.060 (1.52) 0.045 (1.
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AD5220 ORDERING GUIDE Model1, 2, 3 AD5220BNZ10 AD5220BNZ100 AD5220BNZ50 AD5220BR10 AD5220BR10-REEL7 AD5220BR100 AD5220BR100-REEL AD5220BR100-REEL7 AD5220BRZ10 AD5220BRZ10-REEL AD5220BRZ10-REEL7 AD5220WBRZ10-REEL7 AD5220BRZ100 AD5220BRZ100-REEL7 AD5220BRZ50 AD5220BRM100 AD5220BRM100-REEL7 AD5220BRMZ10 AD5220BRMZ10-REEL7 AD5220BRMZ100 AD5220BRMZ100-R7 AD5220BRMZ50 AD5220BRMZ50-RL7 RAB (kΩ) 10 100 50 10 10 100 100 100 10 10 10 10 100 100 50 100 100 10 10 100 100 50 50 Temperature Range −40°C to +85°C −40°C t