AD7244JRZ Analog Devices Inc, AD7244JRZ Datasheet
AD7244JRZ
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AD7244JRZ Summary of contents
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FEATURES Two 12-Bit/14-Bit DACs with Output Amplifiers AD7242: 12-Bit Resolution AD7244: 14-Bit Resolution On-Chip Voltage Reference Fast Settling Time AD7242 1/2 LSB AD7244 1/2 LSB High Speed Serial Interface Operates from 5 V ...
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AD7242/AD7244–SPECIFICATIONS All Specifications unless otherwise noted.) MIN MAX Parameter J, A Versions DC ACCURACY Resolution 12 Integral Nonlinearity 1 Differential Nonlinearity 1 Bipolar Zero Error 5 2 Positive Full-Scale Error 5 2 Negative Full-Scale Error 5 3 ...
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Parameter J, A Versions DC ACCURACY Resolution 14 Integral Nonlinearity 2 Differential Nonlinearity 1 Bipolar Zero Error 10 2 Positive Full-Scale Error 10 2 Negative Full-Scale Error 10 3 REFERENCE OUTPUT REF OUT @ +25 C 2.99/3. ...
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AD7242/AD7244 TIMING CHARACTERISTICS Limit MIN MAX Parameter ( Versions 150 NOTES 1 Timing specifications are ...
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DIP Pin No. Mnemonic Description 1 LDACA Load DAC, Logic Input. A new word is transferred into DAC Latch A from input Latch A on the fall- ing edge of this signal. If LDACA is hard-wired low, data is transferred ...
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AD7242/AD7244 CIRCUIT DESCRIPTION The AD7242/AD7244 contains two 12-bit/14-bit D/A convert- ers, each with an output buffer amplifier. The part also contains a reference input buffer amplifier for each DAC, and an on-chip 3 V reference. D/A Section The AD7242/AD7244 contains ...
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Output Amplifier The outputs from each of the voltage-mode DACs are buffered by a noninverting amplifier. The buffer amplifier is capable of developing 3 V across and 100 pF load to ground, and can produce 6 V ...
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AD7242/AD7244 TIMING AND CONTROL Communication with the AD7242/AD7244 is via six serial logic inputs. These consist of separate serial clocks, word framing and data lines for each DAC. DAC updating is controlled by two digital inputs: LDACA for updating V ...
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MICROPROCESSOR INTERFACING Microprocessor interfacing to the AD7242/AD7244 is via a serial bus that uses standard protocol compatible with DSP processors and microcontrollers. The communication interface consists of a separate transmit section for each of the DACs. Each section has a ...
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AD7242/AD7244 AD7242/AD7244 to TMS320C25 Interface Figure 9 shows a serial interface between the AD7242/AD7244 and the TMS320C25 DSP processor. In this interface, the CLKX and FSX signals of the TMS320C25 are generated from the clock/timer circuitry. The FSX pin of ...
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APPLYING THE AD7242/AD7244 Good printed circuit board layout is as important as the overall circuit design itself in achieving high speed converter perfor- mance. The AD7242 works on an LSB size of 1.465 mV, while the AD7244 works on an ...
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AD7242/AD7244 OUTLINE DIMENSIONS Dimensions shown in inches and (mm). Plastic DIP (N-24) Cerdip (Q-24) SOIC (R-28) –12– REV. A ...