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LTC2248 Datasheet(PDF) 5 Page - Linear Technology |
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LTC2248 Datasheet(HTML) 5 Page - Linear Technology |
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5 / 24 page  LTC2248/LTC2247/LTC2246 5 224876fa TI I G CHARACTERISTICS The ● denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 4) Note 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime. Note 2: All voltage values are with respect to ground with GND and OGND wired together (unless otherwise noted). Note 3: When these pin voltages are taken below GND or above VDD, they will be clamped by internal diodes. This product can handle input currents of greater than 100mA below GND or above VDD without latchup. Note 4: VDD = 3V, fSAMPLE = 65MHz (LTC2248), 40MHz (LTC2247), or 25MHz (LTC2246), input range = 2VP-P with differential drive, unless otherwise noted. Note 5: Integral nonlinearity is defined as the deviation of a code from a straight line passing through the actual endpoints of the transfer curve. The deviation is measured from the center of the quantization band. Note 6: Offset error is the offset voltage measured from –0.5 LSB when the output code flickers between 00 0000 0000 0000 and 11 1111 1111 1111. Note 7: Guaranteed by design, not subject to test. Note 8: VDD = 3V, fSAMPLE = 65MHz (LTC2248), 40MHz (LTC2247), or 25MHz (LTC2246), input range = 1VP-P with differential drive. Note 9: Recommended operating conditions. LTC2248 LTC2247 LTC2246 SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX MIN TYP MAX UNITS fs Sampling Frequency (Note 9) ● 165 140 125 MHz tL CLK Low Time Duty Cycle Stabilizer Off ● 7.3 7.7 500 11.8 12.5 500 18.9 20 500 ns Duty Cycle Stabilizer On ● 5 7.7 500 5 12.5 500 5 20 500 ns (Note 7) tH CLK High Time Duty Cycle Stabilizer Off ● 7.3 7.7 500 11.8 12.5 500 18.9 20 500 ns Duty Cycle Stabilizer On ● 5 7.7 500 5 12.5 500 5 20 500 ns (Note 7) tAP Sample-and-Hold 0 0 0 ns Aperture Delay tD CLK to DATA delay CL = 5pF (Note 7) ● 1.4 2.7 5.4 1.4 2.7 5.4 1.4 2.7 5.4 ns Data Access Time CL = 5pF (Note 7) ● 4.3 10 4.3 10 4.3 10 ns After OE ↓ BUS Relinquish Time (Note 7) ● 3.3 8.5 3.3 8.5 3.3 8.5 ns Pipeline 5 5 5 Cycles Latency LTC2248: Typical DNL, 2V Range, 65Msps LTC2248: Typical INL, 2V Range, 65Msps CODE 0 12288 2248 G01 4096 8192 16384 2.0 1.5 1.0 0.5 0 –0.5 –1.0 –1.5 –2.0 CODE 0 12288 2248 G02 4096 8192 16384 1.00 0.75 0.50 0.25 0 –0.25 –0.50 –0.75 –1.00 TYPICAL PERFOR A CE CHARACTERISTICS |
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