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LTC1665 Datasheet(PDF) 4 Page - Linear Technology |
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LTC1665 Datasheet(HTML) 4 Page - Linear Technology |
4 / 16 page 4 LTC1665/LTC1660 SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS t6 LSB SCK High to CS/LD High (Note 6) q 50 5 ns t7 CS/LD Low to SCK High (Note 6) q 100 27 ns t8 DOUT Propagation Delay CLOAD = 15pF (Note 6) q 5 47 150 ns t9 SCK Low to CS/LD Low (Note 6) q 30 0 ns t10 CLR Pulse Width (Note 6) q 120 41 ns t11 CS/LD High to SCK Positive Edge (Note 6) q 30 0 ns SCK Frequency Continuous Square Wave (Note 6) q 3.85 MHz Continuous 28% Duty Cycle Pulse q 5.55 MHz Gated Square Wave q 10 MHz TYPICAL PERFOR A CE CHARACTERISTICS TI I G CHARACTERISTICS The q denotes specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (See Figure 1) Note 1: Absolute maximum ratings are those values beyond which the life of a device may be impaired. Note 2: Nonlinearity and monotonicity are defined from code 4 to code 255 for the LTC1665 and from code 20 to code 1023 for the LTC1660. See Applications Information. Note 3: Digital inputs at 0V or VCC. Note 4: Load is 10k Ω in parallel with 100pF. Note 5: VCC = VREF = 5V. DAC switched between 0.1VFS and 0.9VFS, i.e., codes 26 and 230 for the LTC1665 or codes 102 and 922 for the LTC1660. Note 6: Guaranteed by design and not production tested. Note 7: Measured at code 4 for the LTC1665 and code 20 for the LTC1660. (LTC1665/LTC1660) Midscale Output Voltage vs Load Current Midscale Output Voltage vs Load Current IOUT (mA) –30 –20 –10 0 10 20 30 1665/60 G01 3 2.9 2.8 2.7 2.6 2.5 2.4 2.3 2.2 2.1 2 VCC = 4.5V VCC = 5V VCC = 5.5V VREF = VCC CODE = 128 (LTC1665) CODE = 512 (LTC1660) SINK SOURCE IOUT (mA) –15 – 4 –8 –12 0 4 8 12 15 1665/60 G02 2 1.9 1.8 1.7 1.6 1.5 1.4 1.3 1.2 1.1 1 VCC = 2.7V VCC = 3V VCC = 3.6V VREF = VCC CODE = 128 (LTC1665) CODE = 512 (LTC1660) SINK SOURCE |
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