AD7304 Analog Devices, AD7304 Datasheet
AD7304
Specifications of AD7304
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AD7304 Summary of contents
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... The AD7304/AD7305 are quad, 8-bit 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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... Absolute Maximum Ratings............................................................ 5 ESD Caution.................................................................................. 5 Pin Configurations and Function Descriptions ........................... 8 Typical Performance Characteristics ........................................... 10 Circuit Operation ........................................................................... 14 DAC Section................................................................................ 14 AD7304 Serial Data Interface ....................................................... 15 AD7304 Hardware Shutdown SHDN...................................... 15 Revision History 11/04—Data Sheet Changed from Rev Rev. C Update Format ....................................................................Universal Update Features ................................................................................ 1 Changes to Figure 35...................................................................... 15 Add Power-Up Sequence ...
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... Zero-Scale Error 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 ...
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... and Table 2. Parameter 1, 2 INTERFACE TIMING SPECIFICATIONS AD7304 Only Clock Width High Clock Width Low Data Setup Data Hold Load Pulse Width Load Setup Load Hold Clear Pulse Width Select Deselect AD7305 Only ...
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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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... One input register receives the data bits D7–D0 decoded from the SR address bits (A1, A0), where REG A = (0, 0 (0, 1 (1, 0), and D = (1, 1). LDAC is a level-sensitive input. 3 Table 5. AD7304 Serial Input Register Data Format, Data is Loaded in MSB-First Format MSB B11 B10 B9 ...
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... All input register contents latched No effect, device not selected A0 D0– LDAC OUT Figure 6. AD7305 General Timing Diagram t SDN A0/SHDN I DD Figure 7. AD7305 Timing Diagram Zoom In Rev Page AD7304/AD7305 t LDW ±1 LSB ERROR BAND t SDR ...
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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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... WR DB7 7 DB0 14 DB6 8 DB1 13 DB5 9 12 DB2 DB4 10 DB3 11 Figure 9. AD7305 Pin Configuration full-scale voltage. Specified range of operation is V OUT Rev Page AD7304/AD7305 B pin. Output is REF A pin. Output is REF < V < REF pin. Output is REF C pin. Output is REF ...
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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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... Table 4, Table 5, and Figure 5. Two additional pins, CLR and LDAC , on the AD7304 provide hardware control over the clear function and the DAC register loading. If these functions are not needed, the CLR pin can be tied to logic high, and the LDAC pin can be tied to logic low ...
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... AD7304/AD7305 AD7305 PARALLEL DATA INTERFACE The AD7305 has an 8-bit parallel interface DB7 = MSB, DB0 = LSB. Two address bits, A1 and A0, are decoded when an active low write strobe is placed on the WR pin, see Table 6. The level-sensitive input pin, therefore, the data setup and data hold times defined in the Timing Specifications section need to be adhered to ...
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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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... AD7304BRZ-REEL –40°C to +85°C AD7304YR –40°C to +125°C 1 AD7304YRZ –40°C to +125°C AD7304BRU –40°C to +85°C AD7304BRU-REEL7 –40°C to +85°C AD7305BR –40°C to +85°C AD7305BR-REEL –40°C to +85°C AD7305YR –40°C to +125°C AD7305YR-REEL – ...
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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 ...