Electronic Components Datasheet Search |
|
MAX4090 Datasheet(PDF) 9 Page - Maxim Integrated Products |
|
MAX4090 Datasheet(HTML) 9 Page - Maxim Integrated Products |
9 / 15 page 3V/5V, 6dB Video Buffer with Sync-Tip Clamp and 150nA Shutdown Current _______________________________________________________________________________________ 9 R1 = R2 ( Ω) C1 (pf) L1 (µH) RIS ( Ω) 3dB BW (MHz) ATTENUATION AT 27MHz (dB) 75 330 1.8 0 8.7 20 150 150 3.9 50 9.0 20 200 120 4.7 50 9.3 22 300 82 8.2 100 8.7 20 Table 2. Bench Measurement Values Rn1 = Rn2 ( Ω) Cn1 (F) Cn2 (F) Cn3 (F) Ln1 (H) 1 0.923 0.923 0.06 1.846 Table 3. 3rd-Order Butterworth Lowpass Filter Normalized Values R2 150 Ω R1 150 Ω C1 120pF C2 120pF L1 4.7 µH C3 6.8pF C4 0.1 µF R3 75 Ω C7 1 µF IN OUT GND FB SHDN VCC VCC VCC VOUT VIDEO CURRENT DAC RIS 49.9 Ω 3-POLE RECONSTRUCTION LPF MAX4090 Figure 4. 3rd-Order Butterworth LPF with MAX4090 R1 = R2 ( Ω) C1 (pF) C2 (pF) C3 (pF) L (µH) RIS ( Ω) 3dB BW (MHz) ATTENUATION AT 27MHz (dB) 75 220 220 15.0 2.2 0 9.3 43 150 120 120 6.8 4.7 50 8.9 50 300 56 56 3.3 10.0 100 9.0 45 Table 4. Bench Measurement Values Sag Correction In a 5V application, the MAX4090 can use the sag con- figuration if an AC-coupled output video signal is required. Sag correction refers to the low-frequency compensation for the highpass filter formed by the 150 Ω load and the output capacitor. In video applica- tions, the cutoff frequency must be low enough to pass the vertical sync interval to avoid field tilt. This cutoff frequency should be less than 5Hz, and the coupling capacitor must be very large in normal configuration, typically > 220µF. In sag configuration, the MAX4090 eliminates the need for large coupling capacitors, and instead requires two 22µF capacitors (Figure 6) to reach the same performance as the large capacitor. Bench experiments show that increasing the output coupling capacitor C5 beyond 47µF does not improve the performance. If the supply voltage is less than 4.5V, the sag correction is not recommended for the MAX4090. |
Similar Part No. - MAX4090 |
|
Similar Description - MAX4090 |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.COM |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |