MAX525BCPP+ Maxim Integrated Products, MAX525BCPP+ Datasheet
MAX525BCPP+
Specifications of MAX525BCPP+
Related parts for MAX525BCPP+
MAX525BCPP+ Summary of contents
Page 1
... OUTPUT CS DIN SCLK UPO SPI and QSPI are trademarks of Motorola, Inc. MICROWIRE is a trademark of National Semiconductor Corp. ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. with Serial Interface ______________________________Features ...
Page 2
Low-Power, Quad, 12-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
Low-Power, Quad, 12-Bit Voltage-Output DAC ELECTRICAL CHARACTERISTICS (continued +5V ±10%, AGND = DGND = 0V, REFAB = REFCD = 2.5V noted. Typical values are +25°C. Output buffer connected in unity-gain configuration (Figure 9).) ...
Page 4
Low-Power, Quad, 12-Bit Voltage-Output DAC with Serial Interface ELECTRICAL CHARACTERISTICS (continued +5V ±10%, AGND = DGND = 0V, REFAB = REFCD = 2.5V noted. Typical values are +25°C. Output buffer connected in unity-gain ...
Page 5
Low-Power, Quad, 12-Bit Voltage-Output DAC ____________________________Typical Operating Characteristics (continued +5V +25°C, unless otherwise noted SUPPLY CURRENT vs. SUPPLY VOLTAGE 1000 950 900 850 800 750 700 650 CODE = FFF HEX 600 4.0 4.2 ...
Page 6
Low-Power, Quad, 12-Bit Voltage-Output DAC with Serial Interface ____________________________Typical Operating Characteristics (continued +5V +25°C, unless otherwise noted MAJOR-CARRY TRANSITION 10 s/div V = 2.5V 100pF REF L L ...
Page 7
Low-Power, Quad, 12-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
Low-Power, Quad, 12-Bit Voltage-Output DAC with Serial Interface D10 REF_ AGND SHOWN FOR ALL 1s ON DAC Figure 1. Simplified DAC Circuit Diagram _______________Detailed Description The MAX525 contains four 12-bit, voltage-output ...
Page 9
Low-Power, Quad, 12-Bit Voltage-Output DAC In power-down mode, the MAX525 output amplifiers and the reference inputs enter a high-impedance state. The serial interface remains active. Data in the input registers is retained in power-down, allowing the MAX525 to recall the ...
Page 10
Low-Power, Quad, 12-Bit Voltage-Output DAC with Serial Interface Table 1. Serial-Interface Programming Commands C1 16-BIT SERIAL WORD C0 D11................. MSB 12-bit DAC data 12-bit DAC data 1 0 ...
Page 11
Low-Power, Quad, 12-Bit Voltage-Output DAC CS SCLK 1 DIN 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
Low-Power, Quad, 12-Bit Voltage-Output DAC with Serial Interface MAX525 SCLK SCLK DIN DOUT DIN CS CS Figure 7. Daisy-Chaining MAX525s DIN SCLK CS1 CS2 CS3 CS MAX525 SCLK DIN Figure 8. Multiple MAX525s Sharing a Common DIN Line 12 ______________________________________________________________________________________ ...
Page 13
Low-Power, Quad, 12-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 MAX525 unipolar output circuit, which is also the typi- cal operating circuit. Table ...
Page 14
Low-Power, Quad, 12-Bit Voltage-Output DAC with Serial Interface +5V REFERENCE INPUTS MAX525 V REFAB REFCD DD DAC A DAC B DAC C DAC D AGND DGND 2.5V REFAB REFCD Figure 10. Unipolar Rail-to-Rail Output Circuit R1 ...
Page 15
Low-Power, Quad, 12-Bit Voltage-Output DAC REF_ MAX525 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
... 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 specifications without notice at any time. 16 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2002 Maxim Integrated Products ...