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AD725AR Datasheet(PDF) 2 Page - Analog Devices |
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AD725AR Datasheet(HTML) 2 Page - Analog Devices |
2 / 20 page AD725–SPECIFICATIONS REV. 0 –2– (Unless otherwise noted, VS = +5, TA = +25 C, using 4FSC synchronous clock. All loads are 150 5% at the IC pins. Outputs are measured at the 75 reverse terminated load.) Parameter Conditions Min Typ Max Units SIGNAL INPUTS (RIN, GIN, BIN) Input Amplitude Full Scale 714 mV p-p Black Level 1 0.8 V Input Resistance 2 RIN, GIN, BIN 1 M Ω Input Capacitance 5pF LOGIC INPUTS (HSYNC, VSYNC, 4FSC, CE, STND) TTL Logic Levels Logic Low Input Voltage 1V Logic High Input Voltage 2V Logic Low Input Current (DC) 1 µA Logic High Input Current (DC) 1 µA VIDEO OUTPUTS 3 Luminance (LUMA) Bandwidth, –3 dB NTSC 4.4 MHz PAL 5.2 MHz Gain Error –7 –2 +7 % Nonlinearity max p-p 0.3 % Sync Level NTSC 252 279 310 mV PAL 264 291 325 mV DC Black Level 1.3 V Luminance Trap (YTRAP) Output Resistance 1.0 k Ω DC Black Level 1.0 V Chrominance (CRMA) Bandwidth, –3 dB NTSC 1.2 MHz PAL 1.5 MHz Color Burst Amplitude NTSC 206 255 305 mV p-p PAL 221 291 362 mV p-p Color Burst Width NTSC 2.51 µs PAL 2.28 µs Chroma Level Error 4 –4 % Chroma Phase Error5 ±3 Degrees DC Black Level 2.0 V Chroma Feedthrough R, G, B = 0 15 40 mV p-p Composite (COMP) Absolute Gain Error With Respect to Luma –5 –1 +3 % Differential Gain With Respect to Chroma 0.5 % Differential Phase With Respect to Chroma 1.5 Degrees DC Black Level 1.4 V Chroma/Luma Time Alignment S-Video 20 ns POWER SUPPLIES Recommended Supply Range Single Supply +4.75 +5.25 V Quiescent Current—Encode Mode 30 36 mA Quiescent Current—Power Down <1 µA NOTES 1R, G, and B signals are inputted via an external ac coupling capacitor. 2Except during dc restore period (back porch clamp). 3All outputs measured at a 75 Ω reverse-terminated load; ac voltages at the IC output pins are twice those specified here. 4Difference between ideal and actual color bar subcarrier amplitudes. 5Difference between ideal and actual color bar subcarrier phases. Specifications are subject to change without notice. |
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