MAX545 MAXIM [Maxim Integrated Products], MAX545 Datasheet
MAX545
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MAX545 Summary of contents
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... The DAC output range REF. tion, matched scaling resistors are provided in the MAX545 for use with an external precision op amp (such as the MAX400), generating a ±V swing. The MAX545 also includes Kelvin-sense con- nections for the reference and analog ground pins to reduce layout sensitivity ...
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... SO (derate 8.33mW/°C above +70°C) ...............667mW + 0.3V) 14-Pin Ceramic SB (derate 10.00mW/°C above +70°C...800mW DD Operating Temperature Ranges MAX544 _C_ A/MAX545_C_D ..............................0°C to +70°C DD MAX544 _E_ A/MAX545_E_D............................-40°C to +85°C MAX545BMJD .................................................-55°C to +125°C Storage Temperature Range .............................-65°C to +150°C Lead Temperature (soldering, 10s) .................................+300°C ...
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... Code = 0000 hex 1Vp-p at 100kHz REF Code = 0000 hex IN Code = FFFC hex (Note MIN CONDITIONS CH CL (Note MAX545 MAX545 (Note 6) MIN TYP MAX 120 2.4 0.8 ±1 10 0.40 4.75 5.25 0.3 1.1 1 unless otherwise noted.) MAX MIN TYP MAX ...
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Serial-Input, Voltage-Output, 14-Bit DACs ( +2.5V +25°C, unless otherwise noted.) DD REF A SUPPLY CURRENT vs. TEMPERATURE 0.50 0.45 0.40 0.35 0.30 0.25 0.20 -40 - 100 TEMPERATURE ...
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... Chip-Select Input Serial-Clock Input. Duty cycle must be between 40% and 60%. Serial-Data Input Digital Ground +5V Supply Voltage FULL-SCALE STEP RESPONSE (f = 20MHz) SCLK C = 10pF L = ∞ OUT 500mV/div 2µs/div 400ns/div DIGITAL FEEDTHROUGH SCLK 5V/div OUT (AC-COUPLED, 50mV/div) MAX544/MAX545-12 2µs/div Pin Descriptions FUNCTION 5 ...
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... CSSO CH SCLK D13 DIN LDAC* *MAX545 ONLY Figure 1. Timing Diagram 6 _______________________________________________________________________________________ Pin Descriptions (continued) FUNCTION Feedback Resistor. Connect to external op amp’s output in bipolar mode. DAC Output Voltage Analog Ground (force) Analog Ground (sense) Voltage Reference Input (sense). Connect REFS to external +2.5V reference. ...
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... R-2R ladder, allowing unbuffered operation in medium- load applications. The MAX545 provides matched bipolar offset resistors, which connect to an external op amp for bipolar output swings (Figure 2b). For optimum performance, the MAX545 also provides a set of Kelvin connections to the voltage-reference and analog-ground inputs. MAX495 OUT EXTERNAL OP AMP ...
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... LDAC low after CS goes high (Figure 3b). Hold LDAC high during the data-loading sequence. CS SCLK DIN D13 Figure 3a. MAX544/MAX545 3-Wire Interface Timing Diagram ( LDAC = DGND for MAX545) CS SCLK DIN D13 D12 D11 D10 LDAC Figure 3b. MAX545 4-Wire Interface Timing Diagram ...
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... DAC is used in unipolar or bipolar operational mode. In unipolar mode, the output amplifi used in a voltage-follower connection. In bipolar mode (MAX545 only), the amplifier operates with the internal scaling resistors (Figure 2b). In each mode, the DAC’s output resistance is constant and is independent of input code ...
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... SPI, QSPI, and MICROWIRE interfaces. The three digital inputs (CS, DIN, and SCLK) load the digital input data serially into the DAC. LDAC (MAX545) updates the DAC output asynchronously. All of the digital inputs include Schmitt-trigger buffers to accept slow-transition interfaces. This means that opto- couplers can interface directly to the MAX544/MAX545 without additional external logic ...
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... SO MAX545BCSD 0°C to +70° MAX545AEPD -40°C to +85°C 14 Plastic DIP MAX545BEPD -40°C to +85°C 14 Plastic DIP MAX545AESD -40°C to +85° MAX545BESD -40°C to +85° MAX545BMJD -55°C to +125°C 14 Ceramic SB* *Contact factory for availability. ______________________________________________________________________________________ ...
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Serial-Input, Voltage-Output, 14-Bit DACs ________________________________________________________Package Information Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and ...