MAX549 MAXIM [Maxim Integrated Products], MAX549 Datasheet
MAX549
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MAX549 Summary of contents
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... The MAX548A is a dual DAC with an asynchronous load input; it uses V as the reference input. The DD MAX549A is a dual DAC with an external reference input. The MAX550A is a single DAC with an external reference input and an asynchronous load input. The MAX548A/MAX549A/MAX550A’s low power con- sumption and small µ ...
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... Storage Temperature Range .............................-65°C to +150°C Lead Temperature (soldering, 10sec) .............................+300°C , unless otherwise noted. Typical values are at T CONDITIONS MAX5_ _AEUA (Note 1) Guaranteed monotonic All others MAX5_ _AEUA (Note 1) All others MAX549A/MAX550A for specified performance MAX549A MAX550A 5.5V DD REF MAX549A ...
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... Voltage-Output Settling Time Voltage-Output Slew Rate Wake-Up Time at Power-Up POWER SUPPLIES Supply Voltage Range V DD Supply Current (MAX548A Supply Current I DD (MAX549A/MAX550A) Shutdown Current TIMING CHARACTERISTICS (V = +2.5V to +5.5V MIN MAX PARAMETER SCLK Pulse Width High SCLK Pulse Width Low ...
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... 5.0V DD REF 120 2.5V DD REF 28 -60 - 100 TEMPERATURE (°C) MAX549A/MAX550A REFERENCE AC FEEDTHROUGH vs. FREQUENCY 0 -20 -40 -60 - 1Vp-p SINE WAVE REF DAC CODE = 00 hex -100 10 100 1k 10k 100k 1M FREQUENCY (Hz) SETTLING TIME (FALLING) DAC CODE FF hex to 00 hex 2 s/div ...
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... Low-Power, Single/Dual, 8-Bit Voltage-Output DACs in µMAX Package _____________________________Typical Operating Characteristics (continued 2.5V 1MΩ 15pF REF L L OUTPUT GLITCH FILTERING CODE = 00 hex 5 s/div ______________________________________________________________Pin Description PIN MAX548A MAX549A MAX550A — — — — ...
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... Description The MAX548A/MAX549A/MAX550A are 8-bit, voltage- output digital-to-analog converters (DACs). The MAX548A/MAX549A are dual DACs, and the MAX550A is a single DAC. Each DAC consists of an R-2R ladder network that converts 8-bit digital inputs into equivalent analog output voltages in proportion to the applied ref- erence voltage (Figure 1) ...
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... DAC Register Load Operation Disabled 1 DAC Register Load Operation Enabled DAC Register Updated on CS’s Rising Edge 0 DAC Register Updated on LDAC’s Falling Edge (MAX549A = Don’t Care Not Address DAC B (MAX550A = Don’t Care) 1 Address DAC B (MAX550A = Don’t Care) ...
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... Figure 3. Detailed Serial-Interface Timing Diagram 8 _______________________________________________________________________________________ • Loads 80 hex (128 decimal) into the DAC input regis- ter (DAC A for the MAX548A/MAX549A) • Updates the DAC register(s) on CS’s rising edge. Table 6 shows how to calculate the output voltage based on the input code. Figure 3 gives detailed timing information ...
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Low-Power, Single/Dual, 8-Bit Voltage-Output DACs in µMAX Package Table 2. MAX548A Serial-Interface Programming Commands CONTROL BYTE Loaded First UB1 UB2 UB3 UNASSIGNED COMMANDS ...
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Low-Power, Single/Dual, 8-Bit Voltage-Output DACs in µMAX Package Table 2. MAX548A Serial-Interface Programming Commands (continued) COMMANDS FOR POWERING DOWN CONTROL BYTE Loaded First UB1 UB2 UB3 COMMANDS POWERING DOWN AND LOADING INPUT REGISTER(S) ONLY ...
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... Low-Power, Single/Dual, 8-Bit Voltage-Output DACs in µMAX Package Table 3. MAX549A Serial-Interface Programming Commands CONTROL BYTE Loaded First UB1 UB2 UB3 UNASSIGNED COMMAND COMMANDS LOADING INPUT REGISTER(S) ONLY COMMANDS UPDATING DAC REGISTER(S) ...
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Low-Power, Single/Dual, 8-Bit Voltage-Output DACs in µMAX Package Table 4. MAX550A Serial-Interface Programming Commands CONTROL BYTE Loaded First UB1 UB2 UB3 UNASSIGNED COMMANDS ...
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... Due to internal stray capacitance, higher frequency analog input signals at REF can couple to the output, even when the input digital code is all 0s. This condition is shown in the MAX549A/MAX550A Reference AC Feedthrough vs. Frequency graph in the Typical Operating Characteristics . Test analog feedthrough by setting all DAC outputs to 0V and sweeping REF ...
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... REGISTER GND ___________________Chip Information TRANSISTOR COUNT: 1562 PIN-PACKAGE 8 Plastic DIP 8 µMAX Dice* 8 Plastic DIP 8 µMAX 8 Plastic DIP 8 µMAX Dice* 8 Plastic DIP 8 µMAX 8 OUTA DAC A R-2R LADDER REF V DD MAX549A/ MAX548A MAX550A ONLY ONLY 8 OUTB DAC B R-2R LADDER MAX548A/ MAX549A ONLY MAX548A MAX549A MAX550A ...
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Low-Power, Single/Dual, 8-Bit Voltage-Output DACs in µMAX Package ________________________________________________________Package Information ______________________________________________________________________________________ 15 ...
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Low-Power, Single/Dual, 8-Bit Voltage-Output DACs in µMAX Package ___________________________________________Package Information (continued) Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are Maxim cannot assume ...