AD7112 Analog Devices, AD7112 Datasheet
AD7112
Specifications of AD7112
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AD7112 Summary of contents
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... AD7112–SPECIFICATIONS Output amplifier AD712 except where noted. All specifications T C Version Parameter +25 C ACCURACY Resolution 0.375 Accuracy Relative Attenuation 0.375 dB Steps: Accuracy 0. Monotonic 0.75 dB Steps: Accuracy 0. Monotonic 1.5 dB Steps: Accuracy 0 ...
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... Hz typ –91 –91 dB typ –3– AD7112 Units Conditions/Comments ns min See Figure 3. ns min ns min ns min ns min ns min ns min Conditions/Comments V = 5%. Input Code = 00000000 ...
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... ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although the AD7112 features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality ...
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... The AD7112 consists of a dual 17-bit R-2R CMOS multiplying D/A converter with extensive digital logic. Figure 1 shows a sim- plified circuit of the D/A converter section of the AD7112. The logic translates the 8-bit binary input into a 17-bit word which is used to drive the D/A converter. Figure 2 shows a typical circuit configuration for the AD7112 ...
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... AH Feedthrough and accuracy are sensitive to output leakage cur- rents effects. For this reason it is recommended that the operat- ing temperature of the AD7112 be kept as close to + practically possible, particularly where the devices performance at high attenuation levels is important. A typical plot of leakage current vs. temperature is shown in Figure 11. ...
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... AD7112 accuracy is specified and tested using only the internal feedback resistor. Any gain error (i.e., mismatch of R R–2R ladder) that may exist in the AD7112 D/A converter cir- cuit results in a constant attenuation error over the whole range. The AD7112 accuracy is specified relative attenuation, hence gain trim resistors can be used to adjust V cisely (i ...
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... AD7112 – rms IN INPUT CODE = 0000 0000 ° +25 C – 15pF –80 –90 –100 FREQUENCY – Hz Figure 8. Distortion vs. Frequency – +5V DD –50 ° + 20V p–p SINE WAVE IN IN –60 –70 –80 –90 –100 FREQUENCY – ...
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... –0.17 –1 – Figure 17. Accuracy Specification for C Grade Devices + –9– AD7112 MONOTONICITY FOR 1.5 dB ATTENUATION STEPS 0.75 dB ATTENUATION STEPS 0.375 dB ATTENUATION STEPS ATTENUATION – dB MONOTONICITY FOR 1.5 dB ATTENUATION STEPS 0.75 dB ATTENUATION STEPS ...
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... Automatic Gain Control In an automatic gain control system an input signal is attenuated or amplified so that its average output level remains constant. The AD7112 D/A converter is used here as a variable gain or at- tenuation element that adjusts the output signal relative to the input level. A feedback loop consisting of a detector, comparator, and up/ ...
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... AD7112 to control the critical parameters f stead of several fixed resistors, the circuit uses the DAC equiva- lent resistances as circuit elements. Thus Figure 22 is controlled by the 8-bit word loaded to DAC A1 of the AD7112. This is also the case with R2, R3 and R4. OUT A ...
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... AD7112 PIN 1 0.210 (5.33) MAX 0.160 (4.06) 0.115 (2.93) PIN 1 0.0118 (0.30) 0.0040 (0.10) OUTLINE DIMENSIONS Dimensions shown in inches and (mm). 20-Pin Plastic DIP (N-20 0.280 (7.11) 0.240 (6.10 0.325 (8.25) 1.060 (26.90) 0.300 (7.62) 0.060 (1.52) 0.925 (23.50) 0.015 (0.38) 0.130 (3.30) 0.015 (0.381) MIN 0.008 (0.204) 0.022 (0.558) 0.070 (1.77) 0.100 (2.54) SEATING PLANE BSC ...