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LTC1296BCS Datasheet(PDF) 4 Page - Linear Technology |
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LTC1296BCS Datasheet(HTML) 4 Page - Linear Technology |
4 / 28 page 4 LTC1293/LTC1294/LTC1296 SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VIH High Level Input Voltage VCC = 5.25V q 2.0 V VIL Low Level Input Voltage VCC = 4.75V q 0.8 V IIH High Level Input Current VIN = VCC q 2.5 µA IIL Low Level Input Current VIN = 0V q –2.5 µA VOH High Level Output Voltage VCC = 4.75V, IO = –10mA 4.7 V IO = 360µA q 2.4 4.0 VOL Low Level Output Voltage VCC = 4.75V, IO = 1.6mA q 0.4 V IOZ High Z Output Leakage VOUT = VCC, CS High q 3 µA VOUT = 0V, CS High q –3 ISOURCE Output Source Current VOUT = 0V –20 mA ISINK Output Sink Current VOUT = VCC 20 mA ICC Positive Supply Current CS High q 612 mA ICC Positive Supply Current CS High, LTC1294BC, LTC1294CC, q 510 µA Power LTC1294DC, LTC1294BI, Shutdown LTC1294CI, LTC1294DI, CLK Off LTC1294BM, LTC1294CM, q 515 µA LTC1294DM IREF Reference Current CS High q 10 50 µA I – Negative Supply Current CS High q 150 µA ISOURCEs SSO Source Current VSSO = 0V q 0.8 1.5 mA ISINKs SSO Sink Current VSSO = VCC q 0.5 1.0 mA ELECTRICAL C C HARA TER STICS DIGITAL A D I DC (Note 3) LTC1293/4/6B LTC1293/4/6C LTC1293/4/6D Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Note 2: All voltage values are with respect to DGND, AGND and REF – wired together (unless otherwise noted). Note 3: VCC = 5V, VREF+ = 5V, VREF– = 0V, V – = 0V for unipolar mode and –5V for bipolar mode, CLK = 1.0MHz unless otherwise specified. The q denotes specifications which apply over the full operating temperature range; all other limits and typicals TA = 25 °C. Note 4: These specs apply for both unipolar and bipolar modes. In bipolar mode, one LSB is equal to the bipolar input span (2VREF) divided by 4096. For example, when VREF = 5V, 1LSB (bipolar) = 2 (5V)/4096 = 2.44mV. Note 5: Linearity error is specified between the actual end points of the A/D transfer curve. The deviation is measured from the center of the quantization band. Note 6: Recommended operating conditions. Note 7: Two on-chip diodes are tied to each reference and analog input which will conduct for reference or analog input voltages one diode drop below V – or one diode drop above VCC. Be careful during testing at low VCC levels (4.5V), as high level reference or analog inputs (5V) can cause this input diode to conduct, especially at elevated temperatures, and cause errors for inputs near full scale. This spec allows 50mV forward bias of either diode. This means that as long as the reference or analog input does not exceed the supply voltage by more than 50mV, the output code will be correct. To achieve an absolute 0V to 5V input voltage range will therefore require a minimum supply voltage of 4.950V over initial tolerance, temperature variations and loading. Note 8: Channel leakage current is measured after the channel selection. |
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