AD815 Analog Devices, AD815 Datasheet
AD815
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AD815 Summary of contents
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... ADSL, HDSL and VDSL. The AD815 differential slew rate of 900 V/µs and high load drive are suitable for fast dynamic control of coils or transformers, and the video performance of 0.05% and 0.45° differential gain and phase into a load of 25 Ω ...
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... R LOAD MHz T – T MIN MAX T – T MIN MAX T – T MIN MAX –2– and R = 100 unless otherwise noted) LOAD AD815A V Min Typ Max Units S ± 15 100 120 MHz ± 110 MHz ± MHz ± MHz ± 15 ...
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... Observe Power Derating Curves Can Only Short to Ground Storage Temperature Range RB Package . . . . . . . . . . . . . . . . . . . . . . . –65°C to +125°C Operating Temperature Range AD815A . . . . . . . . . . . . . . . . . . . . . . . . . . . –40°C to +85°C Lead Temperature Range (Soldering, 10 sec 300°C NOTES 1 Stresses above those listed under Absolute Maximum Ratings may cause perma- nent damage to the device. This is a stress rating only ...
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... AD815 –Typical Performance Characteristics SUPPLY VOLTAGE – Figure 4. Input Common-Mode Voltage Range vs. Supply Voltage LOAD (SINGLE-ENDED SUPPLY VOLTAGE – Volts Figure 5. Output Voltage Swing vs. Supply Voltage 100 1k LOAD RESISTANCE – (Differential – ...
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... LOAD CURRENT – Amps 15V S 30k 100k 300k 1M 3M 10M 30M 100M FREQUENCY – ±15V 100 FREQUENCY – MHz AD815 15V = V OUT 1.6 2.0 300M 14 ...
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... INPUT VOLTAGE NOISE 1 10 100 1k FREQUENCY – Hz Figure 16. Input Current and Voltage Noise vs. Frequency SIDE 562 562 OUT IN 562 30 1/2 AD815 562 20 10 10k 100k 1M FREQUENCY – Hz Figure 17. Common-Mode Rejection vs. Frequency 0 – 15V – 100 L –30 –40 –PSRR –50 +PSRR – ...
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... JUNCTION TEMPERATURE – 15V 150 L +V OUT | –V | OUT +V OUT –V | OUT –40 – JUNCTION TEMPERATURE – 15V –V OUT +V OUT –40 – JUNCTION TEMPERATURE – C AD815 +T Z 100 = 25 100 100 ...
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... AD815 6 BACK TERMINATED LOADS (25 ) 0.04 0.03 0.02 PHASE 0.01 0.00 –0.01 –0.02 GAIN –0.03 –0. BACK TERMINATED LOADS (75 ) 0.010 0.005 PHASE 0.000 GAIN –0.005 –0.010 –0.015 GAIN –0.020 PHASE –0.025 –0.030 Figure 28. Differential Gain and Differential Phase (per Amplifier) – ...
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... GENERATOR 250ps R F 20ns 562 100 L 50ns Figure 41. 500 mV Step Response –1 –9– AD815 +15V 0 1/2 AD815 100 0 –15V = 250ps 562 F SIDE 100 140 S SIDE B 5V 100ns Figure 39 ...
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... AD815 SIDE A SIDE B 1V Figure 42 Step Response –1 THEORY OF OPERATION The AD815 is a dual current feedback amplifier with high (500 mA) output current capability. Being a current feedback amplifier, the AD815’s open-loop behavior is expressed as transimpedance, ∆V /∆ –IN Z transimpedance behaves just as the open-loop voltage gain of a voltage feedback amplifier, that is, it has a large dc value and decreases at roughly 6 dB/octave in frequency ...
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... R N Figure 45. Output Offset Voltage POWER CONSIDERATIONS The 500 mA drive capability of the AD815 enables it to drive a 50 Ω load p-p when it is configured as a differential driver. This implies a power dissipation ensure reliability, the junction temperature of the AD815 should be maintained at less than 175°C. For this reason, the AD815 will require some form of heat sinking in most appli- cations ...
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... Figure 51. Fully Differential Operation Creating Differential Signals If only a single ended signal is available to drive the AD815 and a differential output signal is desired, several circuits can be used to perform the single-ended-to-differential conversion. 5ms One circuit to perform this is to use a dual op amp as a predriver that is configured as a noninverter and inverter ...
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... A second circuit that has none of the disadvantages mentioned 0 the above circuit creates a differential output voltage feedback op amp out of the pair of current feedback op amps in the AD815. 6 This circuit, drawn in Figure 55, can be used as a high power 1k differential line driver, such as required for ADSL (asymmetrical digital subscriber loop) line driving ...
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... AD815. Twelve Channel Video Distribution Amplifier The high current of the AD815 enables it to drive up to twelve standard 75 Ω reverse terminated video loads. Figure schematic of such an application. The input video signal is terminated in 75 Ω and applied to the (OPTIONAL) noninverting inputs of both amplifiers of the AD815 ...
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... REV. C OUTLINE DIMENSIONS Dimensions shown in inches and (mm). 24-Lead Thermally Enhanced SOIC (RB-24) 0.6141 (15.60) 0.5985 (15.20 PIN 1 0.1043 (2.65) 0.0926 (2.35) 0.0500 0.0201 (0.51) SEATING 0.0125 (0.32) (1.27) 0.0130 (0.33) PLANE BSC 0.0091 (0.23) –15– AD815 0.0291 (0.74) x 45° 0.0098 (0.25) 0.0500 (1.27) 8° 0° 0.0157 (0.40) ...
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... AD815 Revision History Location 4/05—Data Sheet changed from REV REV. C. Changes to FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Changes to Figure numbering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Universal Changes to GENERAL DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Deleted VR-15, Y-15, and YS-15 Packages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Universal Changes to Power Considerations section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Deleted Figure Deleted Figures 55, 56, 57, and Updated OUTLINE DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 –16– ...