ad8185-eval Analog Devices, Inc., ad8185-eval Datasheet
ad8185-eval
Related parts for ad8185-eval
ad8185-eval Summary of contents
Page 1
... Switching RGB in LCD and Plasma Displays RGB Video Switchers and Routers PRODUCT DESCRIPTION The AD8183 (G = +1) and AD8185 (G = +2) are high speed triple 2:1 multiplexers. They offer –3 dB signal bandwidth up to 380 MHz, along with slew rate of 1000 V/ s. With better than – ...
Page 2
... OUT Step 2 V Step 150 L NTSC or PAL, 150 NTSC or PAL, 150 ƒ MHz, AD8185 150 L ƒ MHz, AD8185 150 L ƒ = 100 MHz, AD8185 150 L ƒ MHz 150 L ƒ kHz to 30 MHz No Load MIN MAX Channel-to-Channel Channel Enabled Channel Disabled ...
Page 3
... Plastic TSSOP RU-24 AD8185ARU – +85 C 24-Lead Plastic TSSOP RU-24 AD8183-EVAL Evaluation Board AD8185-EVAL Evaluation Board MAXIMUM POWER DISSIPATION The maximum power that can be safely dissipated by the AD8183/ AD8185 is limited by the associated rise in junction temperature. The maximum safe junction temperature for plastic encapsulated devices is determined by the glass transition temperature of the plastic, approximately 150 C ...
Page 4
... Figure 7. AD8185 Frequency Response + + –1 –40 C –2 –3 –4 –5 –6 0.1 100 1k Figure 8. AD8185 Frequency Response vs. Temperature –4– GAIN 200mV p-p 2V p-p FLATNESS V AS SHOWN O 200mV p 150 100 FREQUENCY – MHz 200mV p-p GAIN 2V p-p FLATNESS ...
Page 5
... Figure 13. AD8185 Channel-to-Channel Crosstalk vs. Frequency 0 –10 –20 –30 –40 –50 –60 –70 –80 –90 –100 100 1 Figure 14. AD8185 Distortion vs. Frequency –5– AD8183/AD8185 R = 150 37.5 T RTI MEASURED ALL-HOSTILE ADJACENT 10 100 FREQUENCY – MHz R = 150 37.5 T ...
Page 6
... Figure 18. AD8185 Input Impedance vs. Frequency 1k 1k 100 10 1 0.1 0.1 100 1k Figure 19. AD8185 Output Impedance vs. Frequency; Enabled 1M 100k 10k 1k 100 10 100 1k 0.1 Figure 20. AD8185 Output Impedance vs. Frequency; Disabled –6– 100 1k FREQUENCY – MHz 1 10 100 1k FREQUENCY – MHz 1 10 100 1k FREQUENCY – MHz REV. 0 ...
Page 7
... Figure 26. AD8185 RTI Voltage Noise vs. Frequency –7– AD8183/AD8185 0 100 FREQUENCY – MHz –PSRR +PSRR 1 10 FREQUENCY – MHz Figure 25. AD8185 PSRR vs. Frequency 100 1k 10k 100k 1M FREQUENCY – Hz ...
Page 8
... Figure 29. AD8183 Channel-to-Channel Switching Transient (Glitch) 0 Figure 30. AD8185 0.1% Settling Time +1.8V 100 90 +1.0V +1.0V IN0B –0.5V 0% –1.0V Figure 31. AD8185 Channel-to-Channel Switching Time +1.8V 100 +1.0V 90 +0.05V 0V –0.05V 10 0% Figure 32. AD8185 Channel-to-Channel Switching Transient (Glitch) –8– STEP 150 ...
Page 9
... Figure 35. AD8183 Large Signal Pulse Response REV. 0 2ns Figure 36. AD8185 Small Signal Pulse Response 150 L 2ns Figure 37. AD8185 Video Amplitude Pulse Response 150 L 2ns Figure 38. AD8185 Large Signal Pulse Response 150 L –9– AD8183/AD8185 V = 200mV STEP O 0. 150 L 0.05V 0.0V –0.05V – ...
Page 10
... AD8183/AD8185 THEORY OF OPERATION The AD8183 (G = +1) and AD8185 (G = +2) are triple-output, 2:1 multiplexers with TTL-compatible global input switching and output enable control. Optimized for selecting between two RGB (red, green, blue) video sources, the devices have high peak slew rates, maintaining their bandwidth for large signals. ...
Page 11
... Figure 40. Each RGB source is con- nected to either the three “A” or “B” inputs of one of the AD8185s. In addition, all R signals are tied to “0” inputs, all G signals are tied to “1” inputs, and all B signals are tied to “2” ...
Page 12
... AGND DUT IN0A DGND DGND 3 22 SEL A/B IN1A 4 21 AGND AGND IN2A OUT0 6 19 AD8183 AD8185 18 OUT1 IN2B AGND OUT2 AGND IN1B DVCC AGND AGND IN0B CC C9 C10 0.01 F 0.01 F ...
Page 13
... REV. 0 Figure 43. Component Side Silkscreen Figure 44. Board Layout (Component Side) –13– AD8183/AD8185 ...
Page 14
... AD8183/AD8185 Figure 45. Board Layout (75 Signal Layer) Figure 46. Board Layout (Ground Plane) –14– REV. 0 ...
Page 15
... Figure 47. Board Layout (Circuit Side;) 50 REV. 0 Signal Layer Figure 48. Circuit Side Silkscreen –15– AD8183/AD8185 ...
Page 16
... AD8183/AD8185 PIN 1 0.006 (0.15) 0.002 (0.05) SEATING OUTLINE DIMENSIONS Dimensions shown in inches and (mm). 24-Lead Plastic TSSOP (RU-24) 0.311 (7.90) 0.303 (7.70 0.177 (4.50) 0.169 (4.30) 0.256 (6.50) 0.246 (6.25 0.0433 (1.10) MAX 8 0 0.0256 (0.65) 0.0118 (0.30) 0.0079 (0.20) BSC 0.0075 (0.19) PLANE 0.0035 (0.090) –16– 0.028 (0.70) 0.020 (0.50) REV. 0 ...