AD5293 Analog Devices, AD5293 Datasheet
AD5293
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AD5293 Summary of contents
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... Single Channel, 1024-Position, 1% R-Tol, Digital Potentiometer FUNCTIONAL BLOCK DIAGRAM The AD5293 is available in a compact 14ld TSSOP package. The part is guaranteed to operate over the extended industrial temperature range of −40°C to +105°C. 1 The terms digital potentiometer and RDAC are used interchangeably. ...
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... AD5293 www.DataSheet4U.com TABLE OF CONTENTS REVISION HISTORY Revision: Preliminary Version Preliminary Technical Data Rev.PrA | Page ...
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... V - LOGIC LOGIC 0.4 LOGIC -1 21 ±10.5 TBD TBD 2 GND TBD GND TBD GND TBD IL AD5293 < +105° Max Unit Bits +1 LSB +1.5 LSB +2 LSB +1 % ppm/°C TBD Ω Bits +1 LSB +1 LSB ppm/°C 0 LSB TBD ...
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... AD5293 www.DataSheet4U.com Parameter 8 Power Dissipation 6 Power Supply Rejection Ratio 6, 9 DYNAMIC CHARACTERISTICS Bandwidth Total Harmonic Distortion V Settling Time W Resistor Noise Density 1 Typicals represent average readings at 25°C,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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... LOGIC -1 21 ±10.5 TBD TBD 2 GND TBD GND TBD GND TBD IL = GND TBD IL 0.0006 AD5293 < +105° Max Unit Bits +1 LSB +1 LSB +1 % ppm/°C TBD Ω Bits +1 LSB +1 LSB ppm/°C 0 LSB TBD LSB ...
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... AD5293 www.DataSheet4U.com Parameter 6, 9 DYNAMIC CHARACTERISTICS Bandwidth Total Harmonic Distortion V Settling Time W Resistor Noise Density 1 Typicals represent average readings at 25°C,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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... SCLK rising edge to SDO valid ns min SCLK to SDO Data hold time µs max Power-on OTP restore time ) and timed from a voltage level Figure 2. AD5293 Input Register Content Rev. PrA | Page AD5293 unless otherwise noted. MIN MAX + V )/2. ...
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... AD5293 www.DataSheet4U.com TIMING DIAGRAMS Figure 3. Write Timing Diagram Figure 4. Read Timing Diagram Rev. PrA | Page Preliminary Technical Data ...
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... V −0 +0 ±TBD mA ±3 mA ± +0.3 V LOGIC −40°C to +105°C max) 150°C J −65°C to +150°C 260°C 20 sec to 40 sec 2 93°C/W 3 θ , 20°C max − T )/θ Rev. PrA | Page AD5293 ...
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... AD5293 www.DataSheet4U.com PIN CONFIGURATION AND FUNCTION DESCRIPTIONS Table 5. Pin Function Descriptions Pin No. Mnemonic Description 1 RESET Hardware reset pin. Sets the RDAC register to midscale. RESET is activated at the logic high transition. Tie RESET not used. LOGIC 2 V Negative Supply. Connect for single-supply applications. This pin should be decoupled with 0.1µF SS ceramic capacitors and 10 µ ...
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... RDAC Register with midscale. The AD5293 can also be reset through software by executing command 3(Table 7). SERIAL DATA INTERFACE The AD5293 contains a serial interface ( SYNC , SCLK, DIN and SDO), which is compatible with SPI interface standards, as well as most DSPs. This device allows writing of data via the serial interface to every register ...
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... For example, the AD5293 works with a 32-bit word, but it cannot work properly with a 31-bit or 33-bit word. The AD5293 does not require a continuous SCLK and dynamic power can be saved by only transmitting clock pulses during a serial write. All interface pins should be operated at close to the supply rails to minimize power consumption in the digital input buffers ...
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... Figure 7. AD5293 Simplified RDAC Circuit. PROGRAMMING THE VARIABLE RESISTOR Rheostat Operation - 1% Resistor Tolerance The AD5293 operates in rheostat mode when only two termi- nals are used as a variable resistor. The unused terminal can be floating or tied to the W terminal as shown in Figure 8. Figure 8. Rheostat Mode Configuration ...
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... 024 The ground pin of the AD5293 device is primarily used as a digital ground reference. To minimize the digital ground bounce, the AD5293 ground terminal should be joined remotely to the common ground. The digital input control signals to the AD5293 must be referenced to the device ground ...
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... Figure 12. 14-Lead Thin Shrink Small Outline Package [TSSOP] (RU-14) Dimensions shown in millimeters Resolution Temperature Range 1,024 −40°C to +105°C 1,024 −40°C to +105°C 1,024 −40°C to +105°C PR07675-0-7/08(PrA) Rev. PrA | Page Package Package Description Option 14-Lead TSSOP RU-14 14-Lead TSSOP RU-14 14-Lead TSSOP RU-14 AD5293 ...