AD7305 Analog Devices, AD7305 Datasheet
AD7305
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AD7305 Summary of contents
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... DACs that operate from a single + supply, or ±5 V supplies. The AD7304 has a serial interface, while the AD7305 has a parallel interface. Internal precision buffers swing rail-to-rail. The reference input range includes both supply rails, allowing for positive or negative full-scale output voltages ...
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... Changes to Absolute Maximum Ratings ....................................... 3 Changes to Ordering Guide ............................................................ 4 Updated Outline Dimensions ....................................................... 14 3/98—Changed from Rev Rev. A 2/98—Revision 0: Initial Version AD7304/AD7305 Power-On Reset .......................................... 15 Power up sequence..................................................................... 15 AD7305 Parallel Data Interface .................................................... 16 AD7226 Pin Compatibility ....................................................... 16 AD7305 Hardware Shutdown SHDN...................................... 16 ESD Protection Circuits ............................................................ 16 Applications..................................................................................... 17 Outline Dimensions ....................................................................... 18 Ordering Guide .......................................................................... 19 ...
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... V ZSE Full-Scale Voltage Error V FSE Full-Scale Temperature TCV FS 3 Coefficient REFERENCE INPUT V Range V REFIN REFIN Input Resistance (AD7304) R REFIN Input Resistance (AD7305) R REFIN 3 C Input Capacitance REFIN ANALOG OUTPUTS Output Voltage Range V OUT Output Current Drive I OUT Shutdown Resistance R OUT 3 C Capacitive Load ...
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... Clock Width High Clock Width Low Data Setup Data Hold Load Pulse Width Load Setup Load Hold Clear Pulse Width Select Deselect AD7305 Only Data Setup Data Hold Address Setup Address Hold Write Width Load Pulse Width Load Setup Load Hold 1 These parameters are guaranteed by design and not subject to production testing ...
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... 0 affect device reliability. −0 0 – T )/θ J MAX A JA 73°C/W 180°C/W 74°C/W 155°C/W 150°C −40°C to +85°C −65°C to +150°C 235°C 220°C Rev Page AD7304/AD7305 ...
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... AD7304/AD7305 SA SDI CLK CS LDAC t LD1 SDI CLK LDAC CLR FS V OUT ZS SDI/SHDN Table 4. AD7304 Control Logic Truth Table 1 CS CLK LDAC CLR 1 Serial Shift Register Function effect ↑ Data advanced 1 bit ↑ effect effect ↓ ...
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... Table 6. AD7305 Control Logic Truth Table LDAC Input Register Function Register A loaded with DB0 to DB7 ↑ Register A latched with DB0 to DB7 Register B loaded with DB0 to DB7 ↑ Register B latched with DB0 to DB7 ...
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... AD7304/AD7305 PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS Table 7. AD7304 Pin Function Descriptions Pin No. Mnemonic Description Channel B Rail-to-Rail Buffered DAC Voltage Output. Full-scale set by reference voltage applied to V OUT Output is open circuit when SHDN is enabled Channel A Rail-to-Rail Buffered DAC Voltage Output. Full-scale set by reference voltage applied to V OUT Output is open circuit when SHDN is enabled ...
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... Table 8. AD7305 Pin Function Description Pin No. Mnemonic Description Channel B Rail-to-Rail Buffered DAC Voltage Output. Full-scale set by reference voltage applied to V OUT open circuit when SHDN is enabled Channel A Rail-to-Rail Buffered DAC Voltage Output. Full-scale set by reference voltage applied to V OUT open circuit when SHDN is enabled ...
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... AD7304/AD7305 TYPICAL PERFORMANCE CHARACTERISTICS 144 –5V SS 120 REF DD DATA = 0x00 (mV) OUT Figure 10. I Sink vs. V Rail-to-Rail Performance OUT OUT –35 –28 –21 –14 –7 0 4.0 4.2 4.4 4.6 V OUTPUT VOLTAGE (V) OUT Figure 11. I SOURCE vs. V Rail-to-Rail Performance ...
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... Figure 18. Multiplying Mode Gain vs. Frequency +5V DATA = 0xFF 0V –5V +5V 0V – +5V = –5V = 100mV rms 1 0.1 0.01 0.001 10M 10m Rev Page AD7304/AD7305 NO LOAD 150pF R = 70kΩ 10kΩ L 5µs/DIV Figure 19. Time to Shutdown Figure 20. Shutdown Recovery Time (Wakeup +5V ...
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... AD7304/AD7305 + –5V SS 0.1 0.01 0.001 20 100 1k FREQUENCY (Hz) Figure 22. THD vs. Frequency 3.0 2.4 1.8 1.2 0 100 1k FREQUENCY (Hz) Figure 23. Output Noise Voltage Density vs. Frequency V B OUT – +2.5V REF DAC A = 0xFF DAC B = 0x00 F = 2MHz CLK 50ns/DIV 50ns/DIV Figure 24. Digital Feedthrough V OUT CS 10k 100k +5V ...
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... Figure 32. Normalized TUE Drift Accelerated by Burn-In Hours – +2.5V REF 85 105 125 Rev Page AD7304/AD7305 V = +5. –5. +2.5V REF PIN A0 FLOATING –35 – TEMPERATURE ( ° C) Figure 31. Shutdown Supply Current vs. Temperature = +25 ° C READING MADE AT T ...
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... Both parts share the same internal DAC design and true rail-to-rail output buffers. The AD7304 contains four independent multiplying reference inputs, while the AD7305 has one common reference input. The AD7304 uses a 3-wire SPI-compatible serial data interface, while the AD7305 offers an 8-bit parallel data interface. ...
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... V to 2.3 V. The the power-on reset performance. The DAC register data stays at zero until a valid serial register software load takes place. In the case of the double-buffered AD7305, the output DAC register can only be changed once the LDAC strobe is initiated. POWER-UP SEQUENCE It is recommended to power V voltage to the reference terminals to avoid potential latch up ...
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... DAC output voltage (see Figure 36 for an equivalent interface logic diagram). AD7226 PIN COMPATIBILITY By tying the LDAC pin to ground, the AD7305 has the same pin V V configuration and functionality as the AD7226, with the REF DD exception of a lower power supply operating voltage ...
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... APPLICATIONS The AD7304/AD7305 are inherently 2-quadrant multiplying DACs. That is, they can easily be set up for unipolar output operation. The full-scale output polarity is the same as the reference input voltage polarity. In some applications, it may be necessary to generate the full 4-quadrant multiplying capability or a bipolar output swing. ...
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... AD7304/AD7305 OUTLINE DIMENSIONS 10.50 (0.4134) 10.10 (0.3976 7.60 (0.2992) 7.40 (0.2913) 10.65 (0.4193 10.00 (0.3937) 1.27 (0.0500) 2.65 (0.1043) BSC 2.35 (0.0925) 0.30 (0.0118) 0.10 (0.0039) 0.51 (0.0201) SEATING COPLANARITY 0.33 (0.0130) PLANE 0.10 0.31 (0.0122) 0.20 (0.0079) COMPLIANT TO JEDEC STANDARDS MS-013AA CONTROLLING DIMENSIONS ARE IN MILLIMETERS; INCH DIMENSIONS (IN PARENTHESES) ARE ROUNDED-OFF MILLIMETER EQUIVALENTS FOR REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN Figure 39 ...
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... AD7305YR –40°C to +125°C AD7305YR-REEL –40°C to +125°C AD7305BRU –40°C to +85°C AD7305BRU-REEL7 –40°C to +85°C 1 AD7305BRUZ –40°C to +85°C 1 AD7305BRUZ-REEL7 –40°C to +85° Pb-free part. Package Description 16-Lead SOIC 16-Lead SOIC ...
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... AD7304/AD7305 NOTES © 2004 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective companies. Printed in the U.S.A. C01114-0-11/04(C) Rev Page ...