AD9661AKR Analog Devices Inc, AD9661AKR Datasheet
AD9661AKR
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AD9661AKR Summary of contents
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FEATURES < Rise/Fall Times Output Current: 120 mA Single +5 V Power Supply Switching Rate: 200 MHz typ Onboard Light Power Control Loop APPLICATIONS Laser Printers and Copiers GENERAL DESCRIPTION The AD9661A is a highly integrated driver ...
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... Disable Time is measured from the 50% point of the rising edge of DISABLE to the 50% point of the falling transition of the output current. Fall time during disable is similar to fall time during normal operation. 8 PULSE, PULSE2, DISABLE, and CAL are TTL/CMOS compatible inputs. Specifications subject to change without notice. (+ Temperature = +25 C unless otherwise noted) S Test AD9661AKR Level Temp Min Typ Max IV Full ...
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... S POWER LEVEL, LEVEL SHIFT TTL/CMOS INPUTS . . . . . . . . . . . . . . . . . . . . –0 Output Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200 mA Operating Temperature AD9661AKR . . . . . . . . . . . . . . . . . . . . . . . . . +70 C Storage Temperature . . . . . . . . . . . . . . . . . . – +150 C Maximum Junction Temperature . . . . . . . . . . . . . . . . . +150 C Lead Soldering Temp (10 sec +300 C *Absolute maximum ratings are limiting values applied individually, and beyond which the serviceability of the circuit may be impaired. Functional operability under any of these conditions is not necessarily implied ...
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... GAIN and POWER MONITOR. See text for choosing . MONITOR connections should be tied together externally. S LEVEL SHIFT OUT PIN ASSIGNMENTS PULSE2 1 DNC REF LEVEL SHIFT IN 4 GAIN 5 POWER MONITOR 6 AD9661AKR SENSE INPUT 7 (Not to Scale) GROUND GROUND HOLD 11 POWER LEVEL 12 LEVEL SHIFT OUT 13 14 DISABLE –4– ...
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THEORY OF OPERATION The AD9661A combines a very fast output current switch with an onboard analog light power control loop to provide the user with a complete laser diode driver solution. The block diagram illustrates the key internal functions. The ...
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AD9661A The laser diode’s output power will then vary from for an input range +1 the POWER REF REF LEVEL input. Minimum specifications for I MONITOR MAX choosing R . Users ...
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TIME CONSTANTS – Figure 4. Calibration Time Initial calibration is required after power-up or any other time the laser has been disabled. Disabling the AD9661A drives ...
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AD9661A Minimizing the Impedance of the Output Current Path Because of the very high current slew that the AD9661A is capable of producing (120 1.5 ns), the inductance of the output current path to and from the laser ...
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Choosing a hold caps based on this –9 0 HOLD 266.6 A • The initial calibration time for < 0.1% error 550 0.034 F • Recalibration for a 0.1% error after ...
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AD9661A–Typical Performance Characteristics 180 160 140 120 100 1.7 2 2.3 2.6 2.9 3.2 V – V HOLD Figure 8. Typical AD9661A V/I Transfer Function 4.2 3.5 3.8 4.1 4.4 2pF LOW ...
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AD9661A EVALUATION BOARD The AD9661A Evaluation Board is comprised of two printed circuit boards. The Laser Diode Driver (LDD) Resource Board is both a digital pattern generator and an analog reference gen- erator (see LDD Resource Board Block Diagram.) The ...
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AD9661A 28 0.300 (7.60) 0.292 (7.40) 1 PIN 1 0.012 (0.30) 0.004 (0.10) OUTLINE DIMENSIONS Dimensions shown in inches and (mm). 28-Pin Plastic SOIC (R-28) 0.712 (18.08) 0.700 (17.78) 15 0.419 (10.64) 0.393 (9.98) 14 0.104 (2.64) 0.093 (2.36) 0.0500 ...