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LTC1286CS8 Datasheet(PDF) 9 Page - Linear Technology |
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LTC1286CS8 Datasheet(HTML) 9 Page - Linear Technology |
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9 / 24 page  9 LTC1286/LTC1298 123 4 LTC1298 DIN CLK DOUT START ten B11 VOL LTC1286/98 • TC07 CS TEST CIRCUITS Voltage Waveforms for tdis Voltage Waveforms for ten Voltage Waveforms for ten DOUT WAVEFORM 1 (SEE NOTE 1) VIH tdis 90% 10% DOUT WAVEFORM 2 (SEE NOTE 2) CS NOTE 1: WAVEFORM 1 IS FOR AN OUTPUT WITH INTERNAL CONDITIONS SUCH THAT THE OUTPUT IS HIGH UNLESS DISABLED BY THE OUTPUT CONTROL. NOTE 2: WAVEFORM 2 IS FOR AN OUTPUT WITH INTERNAL CONDITIONS SUCH THAT THE OUTPUT IS LOW UNLESS DISABLED BY THE OUTPUT CONTROL. LTC1286/98 • TC05 LTC1286/98 • TC06 CS LTC1286 1 CLK DOUT ten B11 VOL 2 APPLICATION INFORMATION while the LTC1298 operates from a 4.5V to 5.5V supply. Both the LTC1286 and the LTC1298 contain a 12-bit, switched-capacitor ADC, a sample-and-hold, and a serial port (see Block Diagram). Although they share the same basic design, the LTC1286 and LTC1298 differ in some respects. The LTC1286 has a differential input and has an external reference input pin. It can measure signals floating on a DC common-mode volt- age and can operate with reduced spans to 1V. Reduc- ing the spans allows it to achieve 244 µV resolution. The LTC1298 has a two-channel input multiplexer and can convert either channel with respect to ground or the difference between the two. The reference input is tied to the supply pin. OVERVIEW The LTC1286 and LTC1298 are micropower, 12-bit, suc- cessive approximation sampling A/D converters. The LTC1286 typically draws 250 µA of supply current when sampling at 12.5kHz while the LTC1298 nominally con- sumes 350 µA of supply current when sampling at 11.1 kHz. The extra 100 µA of supply current on the LTC1298 comes from the reference input which is inten- tionally tied to the supply. Supply current drops linearly as the sample rate is reduced (see Supply Current vs Sample Rate). The ADCs automatically power down when not performing conversions, drawing only leakage current. They are packaged in 8-pin SO and DIP packages. The LTC1286 operates on a single supply from 4.5V to 9V, |
Similar Part No. - LTC1286CS8 |
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Similar Description - LTC1286CS8 |
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