Analog Devices AD602 - Manuals

Analog Devices AD602 – Manual in PDF format online.

Manuals:

Manual

Manual Analog Devices AD602

Summary

Page 2 - Hz

AD600J/AD602J AD600A/AD602A Parameter Conditions Min Typ Max Min Typ Max Units INPUT CHARACTERISTICS Input Resistance Pins 2 to 3; Pins 6 to 7 98 100 102 95 100 105 Ω Input Capacitance 2 2 pF Input Noise Spectral Density 1 1.4 1.4 nV/ √ Hz Noise Figure R S = 50 Ω , Maximum Gain 5.3 5.3 dB R S = 200 ...

Page 3 - Pin; REF

AD600/AD602 REV. A – 3 – ABSOLUTE MAXIMUM RATINGS 1 Supply Voltage ± V S . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± 7.5 V Input Voltages Pins 1, 8, 9, 16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± V S Pins 2, 3, 6, 7 . . . . . . . . . ....

Page 4 - THEORY OF OPERATION; Noise Performance

AD600/AD602 REV. A – 4 – THEORY OF OPERATION The AD600 and AD602 have the same general design and fea-tures. They comprise two fixed gain amplifiers, each precededby a voltage-controlled attenuator of 0 dB to 42.14 dB with in-dependent control interfaces, each having a scaling factor of32 dB per vol...

Page 7 - COMBINED; GAIN ERROR – dB; Figure 8. SNR for Cascaded Stages—Parallel Control; GAIN ERROR – dB; Figure 10. ISNR vs. Control Voltage—Low Ripple Mode

AD600/AD602 REV. A – 7 – 90 –10 3.0 20 0 0.0 10 –0.5 50 30 40 60 70 80 2.5 2.0 1.5 1.0 0.5 V C OVERALL GAIN – dB A1 COMBINED A2 Figure 5. Plot of Separate and Overall Gains in SequentialControl 5 –8 3.0 –5 –7 0.0 –6 –0.5 –2 –4 –3 –1 1 2 4 3 0 2.0 2.5 1.5 1.0 0.5 V C GAIN ERROR – dB Figure 6. Gain Er...

Page 8 - Figure 12. Adding a 1 k; Realizing Other Gain Ranges

AD600/AD602 REV. A – 8 – APPLICATIONS The full potential of any high performance amplifier can only berealized by careful attention to details in its applications. Thefollowing pages describe fully tested circuits in which many suchdetails have already been considered. However, as is always trueof h...

Page 9 - A Low Noise, 6 dB Preamplifier; R OF X AMP; Table I. Measured Preamplifier Performance; Measurement

AD600/AD602 REV. A – 9 – 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 REF A1 A2 C1HI A1CM A1OP VPOS VNEG A2OP A2CM C2HI C1LO A1HI A1LO GAT1 GAT2 A2LO A2HI C2LO V IN +5V 100 Ω –5V AD600 or AD602 100 Ω 50 Ω V OUT GAIN-CONTROL VOLTAGE V G Figure 13. An Ultralow Noise VCA Using the AD600 orAD602 A Low Noise, ...

Page 11 - The emitter circuit of Q1 is somewhat inductive (due its finite f; FREQUENCY – MHz; INPUT AMPLITUDE – Volts RMS; V to 1 V rms

AD600/AD602 REV. A – 1 1 – The emitter circuit of Q1 is somewhat inductive (due its finite f t and base resistance). Consequently, the effective value of R2 in-creases with frequency. This would result in an increase in thestabilized output amplitude at high frequencies, but for the ad-dition of C3,...

Page 13 - V to 500 mV rms is within; INPUT SIGNAL –V RMS; INPUT SIGNAL – V RMS; V to; is not affected by the changes in the; Figure 23. Reducing the Gain Error Ripple; INPUT SIGNAL – V RMS

AD600/AD602 REV. A – 1 3 – (This system can, of course, be used as an AGC amplifier, inwhich the rms value of the input is leveled.) Figure 21 shows the“decibel” output voltage. More revealing is Figure 22, whichshows that the deviation from the ideal output predicted byEquation 1 over the input ran...

Page 14 - dB have been introduced between; for Figure 25‘s Circuit; Figure 25. RMS Responding AGC Circuit with 100 dB Dynamic Range

AD600/AD602 REV. A – 1 4 – 100 dB to 120 dB RMS Responding Constant Bandwidth AGCSystems with High Accuracy dB Outputs The next two applications double as both AGC amplifiers andmeasurement systems. In both, precise gain offsets are used toachieve either (1) a very high gain linearity of ± 0.1 dB ov...

Page 16 - dB ADJUST; LOGARITHMIC OUTPUT – Volts; Is Essentially Linear Over the Full 120 dB

AD600/AD602 REV. A – 1 6 – 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 REF A1 A2 C1HI A1CM A1OP VPOS VNEG A2OP A2CM C2HI C1LO A1HI A1LO GAT1 GAT2 A2LO A2HI C2LO U1 AD600 +6V DEC –6V DEC U3A 1/4AD713 R2 100 Ω V OUT C1 0.1 µ F U3B 1/4AD713 R1 133k Ω C2 0.1 µ F R5 5.36k Ω R4 133k Ω C3 0.001 µ F 1 2 3 4 5 6 ...

Page 17 - Remains Nose to Its Setpoint of

AD600/AD602 REV. A – 1 7 – 2.0 0 –2.0 1 µ V 10 µ V 10V 1V 100mV 10mV 1mV 100 µ V 0.5 1.0 1.5 –1.5 –1.0 –0.5 INPUT SIGNAL – V RMS GAIN ERROR – dB 0.2 –0.2 Figure 31. The Error Ripple Due to the Individual GainFunctions 400 300 200 1 µ V 10 µ V 10V 1V 100mV 10mV 1mV 100 µ V 350 250 INPUT SIGNAL – V RM...

Page 18 - AD600/AD602–Typical Performance Characteristics; GROUP DELAY – ns; OUTPUT OFFSET VOLTAGE – mV

AD600/AD602–Typical Performance Characteristics 0.45 –0.45 0.7 –0.25 –0.35 –0.5 –0.7 –0.05 –0.15 0.05 0.15 0.25 0.35 0.5 0.3 0.1 –0.1 –0.3 GAIN CONTROL VOLTAGE – Volts GAIN ERROR – dB Figure 35. Gain Error vs. GainControl Voltage 10.0 9.0 8.0 –0.7 –0.5 0.7 0.5 0.3 0.1 –0.1 –0.3 9.8 9.6 9.4 9.2 8.2 8...

Page 19 - CROSSTALK – dB

AD600/AD602 10 90 100 0% 50mV 5V 100nS OUTPUT INPUT Figure 44. Gating Feedthrough toOutput, Gating Off to On 10 90 100 0% 500mV 1V 200nS OUTPUT INPUT Figure 47. Input Stage OverloadRecovery Time +10 1k –15 –40 10k 100k 1M 10M 100M –10 –5 0 +5 –35 –30 –25 –20 CMRR – dB AD602 AD600 AD600:AD602:BOTH: G...

Page 20 - OUTLINE DIMENSIONS

AD600/AD602 REV. A – 2 0 – OUTLINE DIMENSIONS Dimensions shown in inches and (mm). 16-Pin Plastic DIP (N-16) Package 0.125(3.18) MIN 0.035 (0.89) 0.18 (4.57) 0.3 (7.62) 0.87 (22.1) MAX 0.25 (6.35) 0.31 (7.87) 0.18(4.57) MAX 0.011 (0.28) 1 8 9 16 0.018 (0.46) 0.033 (0.84) 0.1 (2.54) 16-Pin SOIC (R-16...