AD606 AD [Analog Devices], AD606 Datasheet
AD606
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AD606 Summary of contents
Page 1
... input of +5 dBm; over this range the logarithmic linearity is typically within 0.4 dB. All scaling parameters are proportional to the supply voltage. The AD606 can operate above and below these limits, with reduced linearity, to provide as much conversion range. A second low-pass filter automatically nulls the input offset of the first stage down to the submicrovolt level ...
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... Resistor POS via a 200 Resistor POS , LADJ Grounded POS V )/dB POS POS to T MIN MAX to T MIN MAX to T MIN MAX –2– ) AD606J Min Typ Max Units 50 MHz 100 MHz 80 dB 500 2,500 2 pF –1.5 +1.5 dB 1 Degrees 37 ...
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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 AD606 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 ...
Page 4
... X IN logarithm of a negative number has no simple meaning. In fact, in the AD606, the response is independent of the sign of V because of the particular way in which the circuit is built. This is part of the demodulating nature of the amplifier, which results in an alternating input voltage being transformed into a quasi-dc (rectified and filtered) output voltage ...
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... Figure 14), and still accept- able at the upper end of the frequency range (Figure 15). CIRCUIT DESCRIPTION Figure block diagram of the AD606, which is a complete logarithmic amplifier system in monolithic form. It uses a total of nine limiting amplifiers in a “successive detection” scheme to closely approximate a logarithmic response over a total dynamic range (Figure 2) ...
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... Z The inclusion of this control loop has no effect on the high frequency response of the AD606. Nor does it have any effect on the low fre- quency response when the input amplitude is substantially above the input offset voltage. The loop’s effect is felt only at the lower end of the dynamic range, that is, from about 80 dBm to – ...
Page 7
... The intercept may be adjusted by adding a small current into BFIN via R1 and R3. The AD606 is designed to have the nomi- nal intercept value of –88 dBm when R1 is centered using this network, which provides a range of 5 dB. ...
Page 8
... AD606 inputs must be ac coupled. To extend the low frequency range, use larger coupling capacitors and an external loop filter, as outlined earlier. The nominal 0 3.5 V output of the AD606 (for a –75 dBm to +5 dBm input) must be scaled and level shifted to fit within the + +4.5 V common-mode range of the ICL7136 for the +5 V supply used ...
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... In this circuit, R4 and R5 form attenuator that extends the input range rms. R3 isolates loads from VLOG. Capacitors C1 and C2 (4.7 F each), R1, R2, and the AD606’s input resistance of 2.5 k form a 100 Hz high-pass filter that is before the AD606; the corner frequency of this filter must be well below the lowest frequency of interest ...
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... AM AD606–Typical Performance Characteristics 0.5 –0.5 70MHz –1.5 45MHz –2.5 10.7MHz –3.5 –4.5 –5.5 –6.5 –80 –70 –60 –50 –40 –30 –20 – INPUT LEVEL – dBm Figure 10. Normalized Limiter Amplitude Response vs. Input Level at 10.7 MHz, 45 MHz and 70 MHz 4 + ...
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... 100pF CONNECT Figure 22. Test Setup for Characterization Data –11– AD606 Figure 21. V Output for 10.7 MHz LOG CW Input with PRUP Toggled ON and OFF; Top Trace: +5 dBm Input; Middle Trace: –35 dBm Input; Bottom Trace: –75 dBm; PRUP Input from ...
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... AD606 0.125 (3.18) 0.1574 (4.00) 0.1497 (3.80) OUTLINE DIMENSIONS Dimensions shown in inches and (mm). 16-Lead Plastic DIP (N-16) 0.87 (22.1) MAX 16 9 0.31 (7.87) 0.25 (6.35 0.300 (7.62) 0.35 PIN 1 (0.89) 0.18 0.011 (4.57) (0.28) MIN SEATING 0.018 0.100 0.033 PLANE (0.46) (2.54) (0.84) BSC 16-Lead Narrow-Body SOIC (R-16A) 0.3937 (10.00) 0.3859 (9.80 0.2440 (6.20) 0.2284 (5.80 PIN 1 0.0688 (1.75) 0.050 (1.27) BSC 0.0532 (1.35) ...