max5251aepp Maxim Integrated Products, Inc., max5251aepp Datasheet
max5251aepp
Related parts for max5251aepp
max5251aepp Summary of contents
Page 1
Rev 1; 10/02 +3V, Quad, 10-Bit Voltage-Output DAC __________________General Description The +3V MAX5251 combines four low-power, voltage- output, 10-bit digital-to-analog converters (DACs) and four precision output amplifiers in a space-saving, 20- pin package. In addition to the four voltage ...
Page 2
Quad, 10-Bit Voltage-Output DAC with Serial Interface ABSOLUTE MAXIMUM RATINGS V to AGND............................................................-0. DGND ...........................................................-0.3V to +6V DD AGND to DGND ..................................................................±0.3V REFAB, REFCD to AGND ...........................-0. OUT_, FB_ to AGND...................................-0.3V to ...
Page 3
Quad, 10-Bit Voltage-Output DAC ELECTRICAL CHARACTERISTICS (continued +3.0V to +3.6V, AGND = DGND = 0V, REFAB = REFCD = 1.25V noted. Typical values are +25°C. Output buffer connected in unity-gain configuration (Figure ...
Page 4
Quad, 10-Bit Voltage-Output DAC with Serial Interface ELECTRICAL CHARACTERISTICS (continued +3.0V to +3.6V, AGND = DGND = 0V, REFAB = REFCD = 1.25V noted. Typical values are +25°C. Output buffer connected in ...
Page 5
Quad, 10-Bit Voltage-Output DAC ____________________________Typical Operating Characteristics (continued +3.3V +25°C, unless otherwise noted SUPPLY CURRENT vs. SUPPLY VOLTAGE 1000 950 900 850 800 750 700 650 600 550 CODE = FFC HEX 500 ...
Page 6
Quad, 10-Bit Voltage-Output DAC with Serial Interface ____________________________Typical Operating Characteristics (continued +3.3V 1.25V REF L DD MAJOR-CARRY TRANSITION 10 s/div ANALOG CROSSTALK GND 10 s/div DAC A CODE SWITCHING FROM ...
Page 7
Quad, 10-Bit Voltage-Output DAC ______________________________________________________________Pin Description PIN NAME 1 AGND Analog Ground 2 FBA DAC A Output Amplifier Feedback 3 OUTA DAC A Output Voltage 4 OUTB DAC B Output Voltage 5 FBB DAC B Output Amplifier Feedback 6 ...
Page 8
Quad, 10-Bit Voltage-Output DAC with Serial Interface REF_ AGND SHOWN FOR ALL 1s ON DAC Figure 1. Simplified DAC Circuit Diagram _______________Detailed Description The MAX5251 contains four voltage-output digital-to- ...
Page 9
Quad, 10-Bit Voltage-Output DAC In shutdown mode, the MAX5251 output amplifiers and the reference inputs enter a high-impedance state. The serial interface remains active. Data in the input regis- ters is retained in shutdown, allowing the MAX5251 to recall ...
Page 10
Quad, 10-Bit Voltage-Output DAC with Serial Interface Table 1. Serial-Interface Programming Commands 16-BIT SERIAL WORD D9................. MSB.............LSB 10-bit DAC data 10-bit DAC data ...
Page 11
Quad, 10-Bit Voltage-Output DAC CS SCLK DIN A1 DOUT (MODE 0) MSB FROM PREVIOUS WRITE DOUT (MODE 1) MSB FROM PREVIOUS WRITE Figure 5. Serial-Interface Timing Diagram CS t CSS ...
Page 12
Quad, 10-Bit Voltage-Output DAC with Serial Interface MAX5251 SCLK SCLK DIN DOUT DIN CS CS Figure 7. Daisy-Chaining MAX5251s DIN SCLK CS1 CS2 CS3 CS MAX5251 SCLK DIN Figure 8. Multiple MAX5251s Sharing a Common DIN Line 12 ______________________________________________________________________________________ ...
Page 13
Quad, 10-Bit Voltage-Output DAC __________Applications Information For a unipolar output, the output voltages and the refer- ence inputs have the same polarity. Figure 9 shows the MAX5251 unipolar output circuit, which is also the typi- cal operating circuit. Table ...
Page 14
Quad, 10-Bit Voltage-Output DAC with Serial Interface +3.3V REFERENCE INPUTS MAX5251 REFAB V REFCD DD DAC A DAC B DAC C DAC D AGND DGND 1.25V REFAB REFCD 16k 2.6 ...
Page 15
Quad, 10-Bit Voltage-Output DAC REF_ MAX5251 DAC_ Figure 13. Digitally Programmable Current Source Power-Supply Considerations On power-up, all input and DAC registers are cleared (set to zero code) and DOUT is in Mode 0 (serial data is shifted out ...
Page 16
... Quad, 10-Bit Voltage-Output DAC with Serial Interface _Ordering Information (continued) PART TEMP RANGE PIN-PACKAGE MAX5251AEPP -40°C to +85°C 20 Plastic DIP MAX5251BEPP -40°C to +85°C 20 Plastic DIP MAX5251AEAP -40°C to +85°C 20 SSOP MAX5251BEAP -40°C to +85°C 20 SSOP MAX5251BMJP -55°C to +125°C 20 CERDIP* *Contact factory for availability and processing to MIL-STD-883 ...