AD8170 Analog Devices, AD8170 Datasheet
AD8170
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AD8170 Summary of contents
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... Pixel Switching for “Picture-In-Picture” LCD and Plasma Displays Video Routers PRODUCT DESCRIPTION The AD8170(2:1) and AD8174(4:1) are very high speed buffered multiplexers. These multiplexers offer an internal current feedback output amplifier whose gain can be pro- grammed via external resistors and is capable of delivering output current. They offer – ...
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... MAX ENABLE, SD Inputs, T –T MIN MAX rms 100 rms 100 rms 499 (AD8170R rms 549 (AD8174R Step 2 V Step 2 V Step ƒ = 3.58 MHz ƒ = 3.58 MHz ƒ MHz 100 L ƒ MHz 100 L ƒ ...
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... AD8174 only. ENABLE pin is grounded. Mux is shutdown (i.e Logic 1), and all inputs are driven simultaneously with V tored MHz and 30 MHz 100 . (see Figure 14). The mux output impedance in shutdown mode is the same as the disabled mux output impedance For Gain Accuracy expression, refer to Equation 4. Specifications subject to change without notice. Table I. AD8170 Truth Table SELECT V OUT 0 IN0 1 IN1 REV ...
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... AD8170/AD8174 1 ABSOLUTE MAXIMUM RATINGS Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 Internal Power Dissipation AD8170 8-Lead Plastic ( 1.3 Watts AD8170 8-Lead Small Outline ( 0.9 Watts AD8174 14-Lead Plastic ( 1.6 Watts AD8174 14-Lead Small Outline ( 1.0 Watts Input Voltage (Common Mode Output Short Circuit Duration . . Observe Power Derating Curves Storage Temperature Range N & ...
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... Typical Performance Characteristics – AD8170/AD8174 t = 7.5ns t = 9.1ns RISE FALL DUT OUTPUT OUT IN0, IN2 = +0.5V IN1, IN3 = +0.5V 5ns/DIV Figure 4. Channel Switching Characteristics AD8174R INØ = +0.5VDC OUTPUT R t OFF t = 17ns ON ENABLE PULSE 0 TO +5V (5nsec EDGES) 50ns/DIV Figure 5. Enable and Disable Switching Characteristics ...
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... Figure 14. AD8174R Disable and Shutdown Isolation vs. Frequency 100 150 499 (AD8170R 549 (AD8174R –6– +0.707V rms 499 (AD8170R) ...
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... 50pF 100pF 300pF L 50pF L 100pF 10M 100M FREQUENCY – 50mV rms 499 (AD8170R 549 (AD8174R 100 L 10M 100M FREQUENCY – Hz TRANSIMPEDANCE PHASE 10k 100k 1M 10M 100M FREQUENCY – – –2 –3 – ...
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... ENABLE and SD functions are not to be used, those respective pins must be tied to ground for proper operation. Any unused channel input should also be tied to ground. The AD8170 has two switches driving an amplifier to form a 2:1 multiplexer. No disable or shutdown functions are provided. DC Performance and Noise Considerations Figure 23 shows the different contributors to total output offset and noise ...
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... R = Inverting Terminal Input Resistance 100 IN The –3 dB bandwidth is determined from this model as: This model is typically good to within 15%. 1 CMRR Table III. Recommended Component Values (4) Gain R AD8170R +1 +2 +10 +20 AD8174R +1 +2 +10 +20 Capacitive Load The general rule for current feedback amplifiers is that the higher the load capacitance, the higher the feedback resistor required for stable operation ...
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... LAYOUT CONSIDERATIONS: Realizing the high speed performance attainable with the AD8170 and AD8174 requires careful attention to board layout and component selection. Proper RF design techniques and low parasitic component selection are mandatory. Wire wrap boards, prototype boards, and sockets are not recommended because of their high parasitic inductance and capacitance ...
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... If the fourth channel is unused good design practice to tie the input permanently to ground CCD B REFERENCE Figure 27. Color Document Scanner –11– AD8170/AD8174 OUT ...
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... For ordering information, please refer to the Ordering Guide. Figure 29 shows the silkscreen of the component side of the solder side of the AD8170 evaluation board. Figures 30 and 31 show the layout of the component side and solder side respec- tively. The silkscreens and layout of the AD8174 evaluation board are shown in Figures 33, 34, 35 and 36 ...
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... C1 10µ – 0.1µ Figure 32. AD8174 Evaluation Board Figure 35. AD8174 Solder Side Silkscreen Figure 36. AD8174 Board Layout (Solder Side) –13– AD8170/AD8174 C3 10µF C4 0.1µF +V R11 OUT R10 549 R9 549 ENABLE R7 50 ...
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... AD8170/AD8174 NOTES 1. AD8170R/AD8174R Evaluation Board inputs are configured with 50 impedance striplines. This FR4 board type has the following stripline dimensions: 60-mil width, 12-mil gap between center conductor and outside ground plane “is- lands,” and 62-mil board thickness. 2. Several types of SMA connectors can be mounted on this board: the side-mount type, which can be easily installed at the edges of the board ...
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... SEATING 0.0500 (1.27) PLANE 0.0160 (0.41) –15– AD8170/AD8174 14-Lead Plastic DIP (N-14) 0.795 (20.19) 0.725 (18.42 0.280 (7.11) 0.240 (6.10) 0.325 (8.25 0.195 (4.95) 0.300 (7.62) 0.060 (1.52) 0.115 (2.93) PIN 1 0.015 (0.38) 0.130 (3 ...
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