AD7398 Analog Devices, AD7398 Datasheet
AD7398
Specifications of AD7398
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AD7398 Summary of contents
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... For 8-bit resolution applications, see the pin-compatible AD7304 product. The AD7398/AD7399 are specified over the extended industrial (−40°C to +125°C) temperature range. Parts are available in 16-lead, wide body SOIC and ultracompact, thin, 1.1 mm < ...
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... AD7399 10-Bit Voltage Output DAC ........................................ 4 Timing Diagrams .......................................................................... 5 Absolute Maximum Ratings ............................................................ 6 ESD Caution .................................................................................. 6 Pin Configuration And Function Descriptions ............................ 7 Input Registers .................................................................................. 8 AD7398 Serial Input Register Data Format .............................. 8 AD7399 Serial Input Register Data Format .............................. 8 Terminology ...................................................................................... 9 REVISION HISTORY 1/11—Rev Rev. C Added Automotive Model and Information .............. Throughout 12/09— ...
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... SPECIFICATIONS AD7398 12-BIT VOLTAGE OUTPUT DAC Table 1. Parameter Symbol STATIC PERFORMANCE Resolution N 1 Relative Accuracy 2 INL Differential Nonlinearity 2 DNL Zero-Scale Error V ZSE Full-Scale Voltage Error V FSE Full-Scale Tempco 3 TCV FS REFERENCE INPUT V IN Range 4 V REF ...
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... I SS Power Dissipation P DISS Power Supply Sensitivity PSS 1 One LSB = V /4096 V for the 12-bit AD7398. REF 2 The first eight codes (000 to 007 ) are excluded from the linearity error measurement in single-supply operation These parameters are guaranteed by design and not subject to production testing. ...
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... V) and timed from a voltage level of 1 D11 D10 Figure 3. AD7398 Timing Diagram (AD7399 with SDI = 14 Bits Only CSH Figure 4. Continuous Clock Timing Diagram Rev Page AD7398/AD7399 ± 10% ±5 V ± 10 ...
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... AD7398/AD7399 ABSOLUTE MAXIMUM RATINGS Table 3. Parameter Rating V to GND −0 GND +0.3 V, − GND REF SS Logic Inputs to GND −0 GND V − 0 OUT SS I Short Circuit to GND 50 mA OUT Thermal Resistance (θ 158°C/W ...
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... CLK Figure 5. Pin Configuration Input Register Function No effect No effect Latched Latched Updated with shift register contents Latched Latched Rev Page AD7398/AD7399 pin or V pin pin or V pin pin or V pin pin or V pin ...
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... Bit Position B12 and Bit Position B13 are the SD and SA power shutdown control bits set to Logic 1, all DACs are placed in the power shutdown mode set to Logic 1, the address decoded by Bit B10 and Bit B11 (A0 and A1) determine the DAC channel that is placed in the power shutdown state. Table 6. AD7398/AD7399 Address Decode Control SA ...
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... DAC VFS Reference Feedthrough (V This is a measure of the feedthrough from the V DAC output when the DAC is loaded with all 0s. A 100 kHz p-p is applied p-p. Rev Page AD7398/AD7399 ) DF is varied by ±10 OUT REF input to the REF ...
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... DAC A 0.25 –0.25 –0.50 768 896 1024 = 25°C) A Rev Page 0.5 0.4 0.3 0.2 0 512 1024 1536 2048 2560 3072 CODE (Decimal) Figure 8. AD7398 DNL vs. Code ( ° 25° +5V –5V +2.5V SS REF 0 0 128 256 384 512 640 768 CODE (Decimal 25° ...
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... DNL 0.50 0.25 INL 0 FSE –0.25 –0.50 –0.75 –1.00 –5 –4 –3 –2 – REFERENCE VOLTAGE (V) Figure 10. AD7398 INL, DNL, FSE vs. Reference Voltage 100 512 1024 1536 2048 2560 3072 CODE (Decimal) Figure 11. AD7398 Reference Input Current vs. Code ...
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... +3V 0V, CODE = 0x000, 0xFFF +3V 0V, CODE = 0x555 10k 100k 1M CLOCK FREQUENCY (Hz) Figure 20. AD7398 Supply Current vs. Clock Frequency 2.00 AD7398 T = 25° +2.5V REF DUAL SUPPLY 1.75 ±3V SINGLE SUPPLY 1.50 1.25 1. POWER SUPPLY VOLTAGE (V) Figure 21. AD7398 Supply Current vs. Supply Voltage 0 – ...
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... TEMPERATURE (°C) Figure 23. Shutdown Current vs. Temperature 1.00 AD7398 SAMPLE SIZE = 135 V REF 0.75 0.50 0.25 0 150 0 100 120 140 Rev Page AD7398/AD7399 = 2.5V CODE = 0xFFF CODE = 0x000 100 200 300 400 500 HOURS OF OPERATION AT 150°C Figure 24. AD7398 Long-Term Drift 600 ...
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... Do not use the digital 5 V supply. The reference input resistance is code dependent, exhibiting worst case 35 kΩ for AD7398 when the DAC is loaded with alternating codes 010101010101. Similarly, the reference input resistance is 40 kΩ for AD7399 when the DAC is loaded with 0101010101 ...
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... ZSE in the Specifications section. Data can only be clocked in while the CS chip select pin is active low. For the AD7398, only the last 16 bits clocked into the serial register are interrogated when the CS pin returns to the logic high state, and extra data bits are ignored. For the AD7399, only the last 14 bits clocked into the serial register are interrogated when the CS pin returns to the logic high state ...
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... Figure 31 shows an interface between the AD7398/AD7399 and any MICROWIRE-compatible device. Serial data is shifted out on the falling edge of the serial clock and into the AD7398/ AD7399 on the rising edge of the serial clock. No glue logic is required as the DAC clocks data into the input shift register on the rising edge ...
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... After that, P3.3 is brought high again and the new data loads to the DAC. Again, the first two bits, after rearranging, should be don’t care. LDAC on the AD7398/AD7399 can also be controlled by the 80C51/80L51 serial port output by using another bit-programmable pin, P3.4. Rev Page ...
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... Figure 35. Overlapping Windows Comparator V+ 10kΩ WINDOW 3 V+ 10kΩ WINDOW 4 The nonoverlapping circuit employs one AD7398/AD7399 and V+ ten comparators to achieve five voltage windows. These windows 10kΩ range between V WINDOW 5 Similarly, the overlapping circuit employs six comparators to achieve three overlapping windows (see Figure 36). ...
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... PROGRAMMABLE DAC REFERENCE VOLTAGE With the flexibility of the AD7398/AD7399, one of the internal DACs can be used to control a common programmable V for the remainder of the DACs. The circuit configuration is shown in Figure 37. The relationship dependent upon the digital code and the ratio of REFX ...
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... AD7398/AD7399 OUTLINE DIMENSIONS 0.30 (0.0118) 0.10 (0.0039) COPLANARITY 0.10 0.15 0.05 10.50 (0.4134) 10.10 (0.3976 7.60 (0.2992) 7.40 (0.2913) 1 10.65 (0.4193) 8 10.00 (0.3937) 1.27 (0.0500) BSC 2.65 (0.1043) 2.35 (0.0925) SEATING 0.51 (0.0201) 0.33 (0.0130) PLANE 0.31 (0.0122) 0.20 (0.0079) COMPLIANT TO JEDEC STANDARDS MS-013-AA 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. ...
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... The AD7398 contains 3254 transistors. The die size measures 108 mils × 144 mils. AUTOMOTIVE PRODUCTS The AD7398WBRUZ-RL7 model is available with controlled manufacturing to support the quality and reliability requirements of automotive applications. Note that this automotive model may have specifications that differ from the commercial models; therefore, designers should review the Specifications section of this data sheet carefully ...
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... AD7398/AD7399 NOTES Rev Page ...
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... NOTES Rev Page AD7398/AD7399 ...
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... AD7398/AD7399 NOTES ©2000–2011 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D02179-0-1/11(C) Rev Page ...