Datasheet LTC1282 (Analog Devices) - 3
| Manufacturer | Analog Devices |
| Description | 3V 140ksps 12-Bit Sampling A/D Converter with Reference |
| Pages / Page | 24 / 3 — A ALOG I PUT (Note 5). LTC1282A/LTC1282B. SYMBOL. PARAMETER. CONDITIONS. … |
| File Format / Size | PDF / 370 Kb |
| Document Language | English |
A ALOG I PUT (Note 5). LTC1282A/LTC1282B. SYMBOL. PARAMETER. CONDITIONS. MIN. TYP. MAX. UNITS
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LTC1282
U U A ALOG I PUT (Note 5) LTC1282A/LTC1282B SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VIN Analog Input Range (Note 11) 2.7V ≤ VDD ≤ 3.6V (Unipolar Mode) 0 to 2.5 V 3V ≤ VDD ≤ 3.6V, – 3.3V ≤ VSS ≤ – 2.5V (Bipolar Mode) ±1.25 V IIN Analog Input Leakage Current CS = High ● ±1 µA CIN Analog Input Capacitance Between Conversions (Sample Mode) 63 pF During Conversions (Hold Mode) 5 pF tACQ Sample-and-Hold Commercial ● 0.45 1.14 µs Acquisition Time Military ● 1.5 µs
U U U I TER AL REFERE CE CHARACTERISTICS (Note 5) LTC1282A LTC1282B PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
VREF Output Voltage IOUT = 0 1.1900 1.200 1.210 1.190 1.200 1.210 V VREF Output Tempco IOUT = 0 ● ±5 ±25 ±10 ±45 ppm/°C VREF Line Regulation 2.7V ≤ VDD ≤ 3.6V 0.55 0.55 LSB/V – 3.6V ≤ VSS ≤ – 2.7V 0.02 0.02 LSB/V VREF Load Regulation 0V ≤ |IOUT| ≤ 1mA 3 3 LSB/mA
U U DIGITAL I PUTS A D DIGITAL OUTPUTS (Note 5) LTC1282A/LTC1282B SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VIH High Level Input Voltage VDD = 3.6V ● 1.9 V VIL Low Level Input Voltage VDD = 2.7V ● 0.45 V IIN Digital Input Current VIN = 0V to VDD ● ±10 µA CIN Digital Input Capacitance 5 pF VOH High Level Output Voltage VDD = 2.7V IO = – 10µA 2.6 V IO = – 200µA ● 2.3 V VOL Low Level Output Voltage VDD = 2.7V IO = 160µA 0.05 V IO = 1.6mA ● 0.10 0.4 V IOZ High Z Output Leakage D11-D0/8 VOUT = 0V to VDD, CS High ● ±10 µA COZ High Z Output Capacitance D11-D0/8 CS High (Note 12 ) ● 15 pF ISOURCE Output Source Current VOUT = 0V – 4.5 mA ISINK Output Sink Current VOUT = VDD 4.5 mA
W U POWER REQUIRE E TS (Note 5) LTC1282A/LTC1282B SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VDD Positive Supply Voltage Unipolar Mode (Note 13) 2.7 3.6 V Bipolar Mode (Note 13) 3.0 3.6 V VSS Negative Supply Voltage Bipolar Operation (Note 13) – 3.6 – 2.5 V IDD Positive Supply Current fSAMPLE = 140ksps ● 4 7.8 mA ISS Negative Supply Current fSAMPLE = 140ksps ● 0.03 0.15 mA PD Power Dissipation fSAMPLE = 140ksps ● 12 24 mW 3
U U A ALOG I PUT (Note 5) LTC1282A/LTC1282B SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VIN Analog Input Range (Note 11) 2.7V ≤ VDD ≤ 3.6V (Unipolar Mode) 0 to 2.5 V 3V ≤ VDD ≤ 3.6V, – 3.3V ≤ VSS ≤ – 2.5V (Bipolar Mode) ±1.25 V IIN Analog Input Leakage Current CS = High ● ±1 µA CIN Analog Input Capacitance Between Conversions (Sample Mode) 63 pF During Conversions (Hold Mode) 5 pF tACQ Sample-and-Hold Commercial ● 0.45 1.14 µs Acquisition Time Military ● 1.5 µs
U U U I TER AL REFERE CE CHARACTERISTICS (Note 5) LTC1282A LTC1282B PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
VREF Output Voltage IOUT = 0 1.1900 1.200 1.210 1.190 1.200 1.210 V VREF Output Tempco IOUT = 0 ● ±5 ±25 ±10 ±45 ppm/°C VREF Line Regulation 2.7V ≤ VDD ≤ 3.6V 0.55 0.55 LSB/V – 3.6V ≤ VSS ≤ – 2.7V 0.02 0.02 LSB/V VREF Load Regulation 0V ≤ |IOUT| ≤ 1mA 3 3 LSB/mA
U U DIGITAL I PUTS A D DIGITAL OUTPUTS (Note 5) LTC1282A/LTC1282B SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VIH High Level Input Voltage VDD = 3.6V ● 1.9 V VIL Low Level Input Voltage VDD = 2.7V ● 0.45 V IIN Digital Input Current VIN = 0V to VDD ● ±10 µA CIN Digital Input Capacitance 5 pF VOH High Level Output Voltage VDD = 2.7V IO = – 10µA 2.6 V IO = – 200µA ● 2.3 V VOL Low Level Output Voltage VDD = 2.7V IO = 160µA 0.05 V IO = 1.6mA ● 0.10 0.4 V IOZ High Z Output Leakage D11-D0/8 VOUT = 0V to VDD, CS High ● ±10 µA COZ High Z Output Capacitance D11-D0/8 CS High (Note 12 ) ● 15 pF ISOURCE Output Source Current VOUT = 0V – 4.5 mA ISINK Output Sink Current VOUT = VDD 4.5 mA
W U POWER REQUIRE E TS (Note 5) LTC1282A/LTC1282B SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VDD Positive Supply Voltage Unipolar Mode (Note 13) 2.7 3.6 V Bipolar Mode (Note 13) 3.0 3.6 V VSS Negative Supply Voltage Bipolar Operation (Note 13) – 3.6 – 2.5 V IDD Positive Supply Current fSAMPLE = 140ksps ● 4 7.8 mA ISS Negative Supply Current fSAMPLE = 140ksps ● 0.03 0.15 mA PD Power Dissipation fSAMPLE = 140ksps ● 12 24 mW 3
