AD605 Analog Devices, AD605 Datasheet
AD605
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AD605 Summary of contents
Page 1
... FBK and OUT. The lower and upper gain ranges are determined by shorting pin FBK to OUT, or leaving pin FBK unconnected, respectively. The two channels of the AD605 can be cascaded to provide very accurate gain range in a monolithic package. The gain control interface provides an input resistance of approxi- mately 2 MΩ ...
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... MHz, VGN = 2 ≥ 500 Ω Ω, VGN = 2.9 V, VOUT = p-p OUT –2– 500 , pF, VREF = 2 AD605A AD605B Min Typ Max Min Typ 175 ± 40 175 ± 40 3.0 3.0 2.5 ± 2.5 2.5 ± 2.5 1.8 1.8 2.7 2.7 8.4 8 –20 –20 ...
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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 AD605 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 ...
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... AD605–Typical Performance Characteristics (per Channel 2.5 V (20 dB/V Scaling MHz, R REF 40 –40 C, + –10 –20 0.1 0.5 0.9 1.3 1.7 2.1 2.5 VGN (V) TPC 1. Gain vs. VGN 40.0 37.5 THEORETICAL 35.0 32.5 ACTUAL 30.0 27.5 25.0 22.5 20.0 1.25 1.50 1.75 2.00 2.25 V (V) REF TPC 4. Gain Scaling vs. V REF TPC 7. Gain Error vs. VGN for Different Gain Scalings = 500 ...
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... VGN (V) TPC 12. Output Referred Noise vs. VGN 1.90 VGN = 2.9V 1.85 1.80 1.75 1.70 1.65 1. 100k 1M FREQUENCY (Hz) TPC 15. Input Referred Noise vs. Frequency 0.1 0.5 0.9 1.3 VGN (V) TPC 18. Noise TPC vs. VGN SOURCE AD605 +85 C +25 C –40 C 2.0 2.5 3.0 10M 1.7 2.1 2.5 2.9 ...
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... AD605 – p-p O –35 VGN = 1.0V –40 –45 –50 HD3 –55 HD2 –60 –65 –70 100k 1M 10M 100M FREQUENCY (Hz) TPC 19. Harmonic Distortion vs. Frequency 15 10 INPUT 5 GENERATOR LIMIT = 21 dBm 0 –5 –10 FREQ = 10MHz –15 FREQ = 1MHz –20 0.1 0.5 0.9 1.3 1.7 2.1 2.5 VGN (V) TPC 22 Compression vs. VGN ...
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... S +I (VGN = TEMPERATURE ( C) TPC 32. Group Delay vs. Frequency –7– 180 175 170 165 160 155 150 145 140 100k 1M 100M FREQUENCY (Hz) TPC 30. Input Impedance vs. Frequency VGN = 0.1V 6 VGN = 2.9V 4 100k 1M 10M 100M FREQUENCY (Hz) AD605 VGN = 2.9V 10M 100M ...
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... VOCM C3 EXT Figure 1. Simplified Block Diagram of a Single Channel of the AD605 THEORY OF OPERATION The AD605 is a dual channel, low noise variable gain amplifier. Figure 1 shows the simplified block diagram of one channel. Each channel consists of a single-supply X-AMP called DSX, differential single-supply X-AMP) comprised of ...
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... shown in REF 2.500V × REF Gain Scale 40dB/V 30dB/V 20dB/V LINEAR-IN-dB RANGE OF AD605 0.5 1.0 1.5 2.0 2.5 GAIN CONTROL VOLTAGE Figure 3. Ideal Gain Curves vs. V REF stages; one of the m stage which requires that it m stage that senses the voltages on the attenuator is ...
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... APPLICATIONS The basic circuit in Figure 4 shows the connections for one chan- nel of the AD605 with a gain range of – +34.4 dB. The signal is applied at Pin 3. The ac-coupling capacitors before pins –IN1 and +IN1 should be selected according to the required lower cutoff frequency. In this example, the 0.1 µ ...
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... REV 1MHz –10 –20 –30 –40 0.1 0.5 0.9 1.3 1.7 VGN (V) Figure 6. Gain vs. VGN for the Circuit in Figure –1 –2 –3 –4 0.2 0.7 1.2 1.7 VGN (V) Figure 7. Gain Error vs. VGN for the Circuit in Figure 5 –11– AD605 THEORETICAL ACTUAL 2.1 2.5 2 1MHz 2.2 2.7 ...
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... AD605 Revision History Location 7/04—Data Sheet Changed from REV REV. C. Edits to GENERAL DESCRIPTION ..............................................................................................................................................1 Edits to SPECIFICATIONS ...........................................................................................................................................................2 Edits to ORDERING GUIDE .........................................................................................................................................................3 Change to TPC 22 ..........................................................................................................................................................................6 Updated OUTLINE DIMENSIONS.............................................................................................................................................12 OUTLINE DIMENSIONS 16-Lead Plastic Dual In-Line Package [PDIP] (N-16) Dimensions shown in inches and (millimeters) 0.785 (19.94) 0.765 (19.43) ...