AD5542 Analog Devices, AD5542 Datasheet
AD5542
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AD5542 Summary of contents
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... Providing a low noise performance of 11.8 nV/√Hz and low glitch, the AD5541/AD5542 is suitable for deployment across multiple end systems. The AD5542 can be operated in bipolar mode, which generates a ±V output swing. The AD5542 also includes Kelvin sense REF connections for the reference and analog ground pins to reduce layout sensitivity ...
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... Power-On Reset.......................................................................... 13 Power Supply and Reference Bypassing .................................. 13 Microprocessor Interfacing........................................................... 14 AD5541/AD5542 to ADSP-21xx Interface ............................. 14 AD5541/AD5542 to 68HC11/68L11 Interface....................... 14 AD5541/AD5542 to MICROWIRE Interface ........................ 14 AD5541/AD5542 to 80C51/80L51 Interface.......................... 14 Applications Information .............................................................. 15 Optocoupler Interface................................................................ 15 Decoding Multiple AD5541/AD5542s.................................... 15 Outline Dimensions ....................................................................... 16 ...
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... Tolerance typically 20% nV/√Hz DAC code = 0x8400, frequency = 1 kHz μV p-p 0 LSB ΔV ± 10 kΩ Unipolar operation kΩ AD5542, bipolar operation μ MHz All 1s loaded mV p-p All 0s loaded p-p at 100 kHz REF dB pF Code 0x0000 ...
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... R F SCLK DIN DB15 LDAC* *AD5542 ONLY. CAN BE TIED PERMANENTLY LOW IF REQUIRED. Min Typ Max 2.7 5.5 125 150 0.625 0.825 = 3 V and 90 and 10 INH DD INL Description SCLK cycle frequency ...
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... DD −0 0.3 V device reliability. DD −0 +0.3 V ESD CAUTION ±10 mA −40°C to +85°C 0°C to 70°C −65°C to +150°C 150°C (T max – T )/θ 149.5°C/W 104.5°C/W 260° Rev Page AD5541/AD5542 ...
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... Serial Data Input. This device accepts 16-bit words. Data is clocked into the input register on the rising edge of SCLK. 7 DGND Digital Ground. Ground reference for digital circuitry Analog Supply Voltage ± 10%. DD Table 6. AD5542 Pin Function Descriptions Pin No. Mnemonic Description 1 RFB Feedback Resistor Pin. In bipolar mode, connect this pin to the external op amp output Analog Output Voltage from the DAC ...
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... Figure 8. Linearity Error vs. Supply Voltage 0.50 0.25 –0.25 –0.50 57344 65536 0.75 0.50 0.25 –0.25 –0.50 80 100 120 140 0.75 0.50 0.25 –0.25 –0. Rev Page AD5541/AD5542 2.5V REF 0 0 8192 16384 24576 32768 40960 49152 CODE Figure 9. Differential Nonlinearity vs. Code 2.5V REF 0 –60 –40 –20 ...
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... AD5541/AD5542 0 –0.1 –0.2 –0.3 –0.4 –0.5 –0.6 –0.7 –0.8 –0.9 –40 25 TEMPERATURE (°C) Figure 12. Gain Error vs. Temperature 132 2.5V REF 130 T = 25°C A 128 126 124 122 120 118 116 –40 25 TEMPERATURE (°C) Figure 13. Supply Current vs. Temperature 200 180 160 ...
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... Rev Page AD5541/AD5542 V = 2.5V REF 25° (5V/DIV) 100pF 200pF V Figure 20. Large Signal Settling Time V = 2.5V REF ...
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... AD5541/AD5542 TERMINOLOGY Relative Accuracy or Integral Nonlinearity (INL) For the DAC, relative accuracy or INL is a measure of the maximum deviation, in LSBs, from a straight line passing through the endpoints of the DAC transfer function. A typical INL vs. code plot can be seen in Figure 6. Differential Nonlinearity (DNL) DNL is the difference between the measured change and the ideal 1 LSB change between any two adjacent codes. A specified differential nonlinearity of ± ...
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... CS transfers the contents of the shift register to the DAC. Data can be loaded to the part only while CS is low. The AD5542 has an LDAC function that allows the DAC latch to be updated asynchronously by bringing LDAC low after CS goes high. LDAC should be maintained high while data is written to the shift register ...
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... V is zero scale error in volts. ZSE INL is integral nonlinearity in volts. BIPOLAR OUTPUT OPERATION With the aid of an external op amp, the AD5542 can be confi- gured to provide a bipolar voltage output. A typical circuit of such operation is shown in Figure 24. The matched bipolar offset resistors, R and R , are connected to an external op ...
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... POWER-ON RESET The AD5541/AD5542 have a power-on reset function to ensure that the output known state on power-up. On power-up, the DAC register contains all 0s until the data is loaded from the serial register. However, the serial register is not cleared on power-up, so its contents are undefined. When loading data initially to the DAC, 16 bits or more should be loaded to prevent erroneous data appearing on the output ...
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... MICROWIRE-compatible device. Serial data is shifted out on the falling edge of the serial clock and into the AD5541/ AD5542 on the rising edge of the serial clock. No glue logic is required because the DAC clocks data into the input shift register on the rising edge. ...
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... DIN Figure 29. AD5541/AD5542 in an Optocoupler Interface DECODING MULTIPLE AD5541/AD5542s The CS pin of the AD5541/AD5542 can be used to select one of a number of DACs. All devices receive the same serial clock and serial data, but only one device receives the CS signal at any one time. The DAC addressed is determined by the decoder. There is some digital feedthrough from the digital input lines ...
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... AD5541/AD5542 OUTLINE DIMENSIONS 0.25 (0.0098) 0.10 (0.0040) COPLANARITY 4.00 (0.1575) 3.80 (0.1496) 0.25 (0.0098) 0.10 (0.0039) COPLANARITY 0.10 5.00 (0.1968) 4.80 (0.1890 6.20 (0.2441) 4.00 (0.1574) 1 5.80 (0.2284) 3.80 (0.1497) 4 1.27 (0.0500) BSC 1.75 (0.0688) 1.35 (0.0532) 8° 0° 0.51 (0.0201) 0.10 0.31 (0.0122) 0.25 (0.0098) SEATING 0.17 (0.0067) PLANE COMPLIANT TO JEDEC STANDARDS MS-012-AA CONTROLLING DIMENSIONS ARE IN MILLIMETERS; INCH DIMENSIONS (IN PARENTHESES) ARE ROUNDED-OFF MILLIMETER EQUIVALENTS FOR REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN ...
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... LSB AD5542BR-REEL7 ±2 LSB AD5542BRZ ±2 LSB AD5542BRZ-REEL7 ±2 LSB AD5542JR ±2 LSB AD5542JR-REEL7 ±2 LSB AD5542JRZ ±2 LSB AD5542JRZ-REEL7 ±2 LSB AD5542AR ±4 LSB AD5542AR-REEL7 ±4 LSB AD5542ARZ ±4 LSB AD5542ARZ-REEL7 ±4 LSB EVAL-AD5541/42EBZ RoHS Compliant Part. DNL Temperature Range ± ...
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... AD5541/AD5542 NOTES Rev Page ...
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... NOTES Rev Page AD5541/AD5542 ...
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... AD5541/AD5542 NOTES ©1999–2011 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D07557-0-3/11(D) Rev Page ...