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AD9630AR Arkusz danych(PDF) 3 Page - Analog Devices |
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AD9630AR Arkusz danych(HTML) 3 Page - Analog Devices |
3 / 7 page AD9630 –3– REV. B ABSOLUTE MAXIMUM RATINGS 1 Supply Voltages ( ±V S) . . . . . . . . . . . . . . . . . . . . . . . . . . . ±7 V Continuous Output Current 2 . . . . . . . . . . . . . . . . . . . . . 70 mA Temperature Range over Which Specifications Apply AD9630AN/AR . . . . . . . . . . . . . . . . . . . . . –40 °C to +85°C Lead Soldering Temperature (10 sec) . . . . . . . . . . . . . +300 °C Storage Temperature AD9630AN/AR . . . . . . . . . . . . . . . . . . . . –65 °C to +150°C Junction Temperature 3 AD9630AN/AR . . . . . . . . . . . . . . . . . . . . . . . . . . . . +150 °C NOTES 1Absolute maximum ratings are limiting values to be applied individually, and beyond which the serviceability of the circuit may be impaired. Functional operability is not necessarily implied. Exposure to absolute maximum rating conditions for an extended period of time may affect device reliability. 2Output is short-circuit protected to ground, but not to supplies. Prolonged short circuit to ground may affect device reliability. 3Typical thermal impedances (part soldered onto board): Plastic DIP (N): θ JA = 110 °C/W; θ JC = 30°C/W; SOIC (R): θJA = 155°C/W; θJC = 40°C/W. ORDERING GUIDE Temperature Package Package Model Range Description Option AD9630AN –40 °C to +85°C 8-Lead Plastic DIP N-8 AD9630AR –40 °C to +85°C 8-Lead SOIC SO-8 AD9630AR-REEL –40 °C to +85°C13" Tape and Reel SO-8 CAUTION 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 AD9630 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. EXPLANATION OF TEST LEVELS Test Level I 100% Production tested. II 100% Production tested at +25 °C and sample tested at specified temperatures. AC testing of AN and AR grades done on sample basis only. III Sample tested only. IV Parameter is guaranteed by design and characterization testing. V Typical value. VI S Versions are 100% production tested at temperature extremes. Other grades are sample tested at extremes. 1 2 3 4 8 7 6 5 TOP VIEW (Not to Scale) NC = NO CONNECT AD9630 NC NC NC NC 100 (5%, 0.25W) 24 (5%, 0.25W) +5V –5.2V 0.1 F 0.1 F AD9630 Burn-In Circuit THEORY OF OPERATION The AD9630 is a wide-bandwidth, closed-loop, unity-gain buffer that makes use of a new voltage-feedback architecture. This architecture brings together wide bandwidth and high slew rate along with exceptional dc linearity. Most previous wide- bandwidth buffers achieved their bandwidth by utilizing an open-loop topology which sacrificed both dc linearity and fre- quency distortion when driven into low load impedances. The design’s high loop correction factor radically improves dc lin- earity and distortion characteristics without diminishing bandwidth. This, in combination with high slew rate, results in exceptionally low distortion over a wide frequency range. The AD9630 is an excellent choice to drive high speed and high resolution analog-to-digital converters. Its output stage is de- signed to drive high speed flash converters with minimal or no series resistance. A current booster built into the output driver helps to maintain low distortion. Parasitic or load capacitance (>7 pF) connected directly to the AD9630 output will result in frequency peaking. A small series resistor (RS) connected between the buffer output and capaci- tive load will negate this effect. Figure 1 shows the optimal value of RS as a function of CL to obtain the flattest frequency re- sponse. Figure 2 illustrates frequency response for various capacitive loads utilizing the recommended RS. CL – pF 50 40 0 0 100 20 40 60 80 30 20 10 7 RS CL 200 "R" NO RS NEEDED WHEN CL < 7pF; FOR CL > 30pF, "R" CAN BE OMITTED Figure 1. Recommended RS vs. CL WARNING! ESD SENSITIVE DEVICE |
Podobny numer części - AD9630AR |
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Podobny opis - AD9630AR |
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