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AD720 Arkusz danych(PDF) 2 Page - Analog Devices |
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AD720 Arkusz danych(HTML) 2 Page - Analog Devices |
2 / 8 page REV. 0 –2– Parameter Conditions Min Typ Max Unit SIGNAL INPUTS (RDIN, GRIN, BLIN) Input Amplitude NTSC 714 mV PAL 700 mV Input Resistances 1 RDIN with Respect to AGND 2.3 k Ω GRIN with Respect to AGND 4.2 k Ω BLIN with Respect to AGND 4.2 k Ω Input Capacitance 5pF LOGIC INPUTS (C-SYNC, 4FSC, ENCD, NTSC) Logic LO Input Voltage 1 V Logic HI Input Voltage 4 V Logic LO Input Current (DC) <1 µA Logic HI Input Current (DC) <1 µA BYPASS AMPLIFIERS (AD721 Only) Gain Error Nominal Gain of ×22 –5 +5 % Small Signal –3 dB Bandwidth 100 MHz Output Offset Voltage (Active State) –50 +50 mV Output Voltage (Inactive State) –50 +50 mV VIDEO OUTPUTS 3 (LUMA, CRMA, CMPS) Luminance (LUMA) Output Bandwidth 5 MHz Gain Error –5 ±1 +5 % Linearity ±0.1 % Sync Level NTSC 252 286 320 mV PAL 300 mV Chrominance (CRMA) Output Bandwidth NTSC 3.6 MHz PAL 4.4 MHz Color Burst Amplitude NTSC 257 286 315 mV p-p PAL 300 mV p-p Absolute Gain Error –15 ±5 +15 % Absolute Phase Error ±3 Degrees Chroma/Luma Time Alignment 4 NTSC –170 ns Composite Output Absolute Gain Error –5 ±1 +5 % Differential Gain With Respect to Chroma Channel 0.1 % Differential Phase With Respect to Chroma Channel 0.1 Degrees Output Offset Voltage Chroma, Luma, or Composite Outputs 50 100 mV Chroma Feedthrough Monochrome Input 20 55 mV p-p POWER SUPPLIES (APOS, DPOS, VNEG) Recommended Supply Range Dual Supply ±4.75 ±5.25 V Full Output Current 5 –5 V Supply 35 mA +5 V Supply 67 mA Zero Signal Quiescent Current –5 V Supply 10 20 35 mA +5 V Supply 10 20 35 mA Bypass Mode Quiescent Current –5 V Supply 14 20 mA (AD721 Only) +5 V Supply 14 20 mA AD720/AD721–SPECIFICATIONS NOTES 1Input scaling resistors provide best scaling accuracy when source resistance is 37.5 Ω (75 Ω reverse-terminated input). 2Required for driving a 75 Ω double reverse terminated load. 3All outputs are measured at a reverse-terminated load; voltages at IC pins are twice those specified here. 4This is a predistortion (per FCC specifications) that compensates for the chroma/luma delay in the low-pass filter that separates the luminance and chrominance signals in a television receiver. 5CRMA, LUMA, and CMPS outputs are all connected to 75 Ω reverse-terminated loads; full-white signal for entire field. Specifications shown in boldface are tested on all production units at final electrical test. Results from those tests are used to calculate outgoing quality levels. All min and max specifications are guaranteed, although only those shown in boldface are tested on all production units. Specifications subject to change without notice. (TA = +25 °C and supplies = ±5 V unless otherwise noted) |
Podobny numer części - AD720 |
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Podobny opis - AD720 |
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