Datasheet LTC2488 (Analog Devices) - 3
| Manufacturer | Analog Devices |
| Description | 16-Bit 2-/4-Channel ΔΣ ADC with Easy Drive Input Current Cancellation |
| Pages / Page | 30 / 3 — CONVERTER. CHARACTERISTICS The. denotes the specifications which apply … |
| File Format / Size | PDF / 399 Kb |
| Document Language | English |
CONVERTER. CHARACTERISTICS The. denotes the specifications which apply over the full operating
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LTC2488
CONVERTER CHARACTERISTICS The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 3) PARAMETER CONDITIONS MIN TYP MAX UNITS
Input Common Mode Rejection DC 2.5V ≤ VREF ≤ VCC, GND ≤ IN+ = IN– ≤ VCC (Note 5) l 140 dB Input Common Mode Rejection 50Hz ±2% 2.5V ≤ VREF ≤ VCC, GND ≤ IN+ = IN– ≤ VCC (Note 5) l 140 dB Input Common Mode Rejection 60Hz ±2% 2.5V ≤ VREF ≤ VCC, GND ≤ IN+ = IN– ≤ VCC (Note 5) l 140 dB Input Normal Mode Rejection 50Hz ±2% 2.5V ≤ VREF ≤ VCC, GND ≤ IN+ = IN– ≤ VCC (Notes 5, 7) l 110 120 dB Input Normal Mode Rejection 60Hz ±2% 2.5V ≤ VREF ≤ VCC, GND ≤ IN+ = IN– ≤ VCC (Notes 5, 8) l 110 120 dB Input Normal Mode Rejection 50Hz/60Hz ±2% 2.5V ≤ VREF ≤ VCC, GND ≤ IN+ = IN– ≤ VCC (Notes 5, 9) l 87 dB Reference Common Mode Rejection DC 2.5V ≤ VREF ≤ VCC, GND ≤ IN+ = IN– ≤ VCC (Note 5) l 120 140 dB Power Supply Rejection DC VREF = 2.5V, IN+ = IN– = GND 120 dB Power Supply Rejection, 50Hz ±2% VREF = 2.5V, IN+ = IN– = GND (Notes 7, 9) 120 dB Power Supply Rejection, 60Hz ±2% VREF = 2.5V, IN+ = IN– = GND (Notes 8, 9) 120 dB
ANALOG INPUT AND REFERENCE The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 3) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
IN+ Absolute/Common Mode IN+ Voltage (IN+ Corresponds GND – 0.3V VCC + 0.3V V to the Selected Positive Input Channel) IN– Absolute/Common Mode IN– Voltage (IN– Corresponds GND – 0.3V VCC + 0.3V V to the Selected Negative Input Channel or COM) VIN Input Voltage Range (IN+ – IN–) Differential/Single-Ended l –FS +FS V FS Full Scale of the Input (IN+ – IN–) Differential/Single-Ended l 0.5VREF V LSB Least Significant Bit of the Output Code l FS/216 REF+ Absolute/Common Mode REF+ Voltage l 0.1 VCC V REF– Absolute/Common Mode REF– Voltage l GND REF+ – 0.1V V VREF Reference Voltage Range (REF+ – REF–) l 0.1 VCC V CS(IN+) IN+ Sampling Capacitance 11 pF CS(IN–) IN– Sampling Capacitance 11 pF CS(VREF) VREF Sampling Capacitance 11 pF I + DC_LEAK(IN ) IN+ DC Leakage Current Sleep Mode, IN+ = GND l –10 1 10 nA I – DC_LEAK(IN ) IN– DC Leakage Current Sleep Mode, IN– = GND l –10 1 10 nA I + l DC_LEAK(REF ) REF+ DC Leakage Current Sleep Mode, REF+ = VCC –100 1 100 nA I – DC_LEAK(REF ) REF– DC Leakage Current Sleep Mode, REF– = GND l –100 1 100 nA tOPEN MUX Break-Before-Make 50 ns QIRR MUX Off Isolation VIN = 2VP-P DC to 1.8MHz 120 dB 2488fb For more information www.linear.com/LTC2488 3
CONVERTER CHARACTERISTICS The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 3) PARAMETER CONDITIONS MIN TYP MAX UNITS
Input Common Mode Rejection DC 2.5V ≤ VREF ≤ VCC, GND ≤ IN+ = IN– ≤ VCC (Note 5) l 140 dB Input Common Mode Rejection 50Hz ±2% 2.5V ≤ VREF ≤ VCC, GND ≤ IN+ = IN– ≤ VCC (Note 5) l 140 dB Input Common Mode Rejection 60Hz ±2% 2.5V ≤ VREF ≤ VCC, GND ≤ IN+ = IN– ≤ VCC (Note 5) l 140 dB Input Normal Mode Rejection 50Hz ±2% 2.5V ≤ VREF ≤ VCC, GND ≤ IN+ = IN– ≤ VCC (Notes 5, 7) l 110 120 dB Input Normal Mode Rejection 60Hz ±2% 2.5V ≤ VREF ≤ VCC, GND ≤ IN+ = IN– ≤ VCC (Notes 5, 8) l 110 120 dB Input Normal Mode Rejection 50Hz/60Hz ±2% 2.5V ≤ VREF ≤ VCC, GND ≤ IN+ = IN– ≤ VCC (Notes 5, 9) l 87 dB Reference Common Mode Rejection DC 2.5V ≤ VREF ≤ VCC, GND ≤ IN+ = IN– ≤ VCC (Note 5) l 120 140 dB Power Supply Rejection DC VREF = 2.5V, IN+ = IN– = GND 120 dB Power Supply Rejection, 50Hz ±2% VREF = 2.5V, IN+ = IN– = GND (Notes 7, 9) 120 dB Power Supply Rejection, 60Hz ±2% VREF = 2.5V, IN+ = IN– = GND (Notes 8, 9) 120 dB
ANALOG INPUT AND REFERENCE The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 3) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
IN+ Absolute/Common Mode IN+ Voltage (IN+ Corresponds GND – 0.3V VCC + 0.3V V to the Selected Positive Input Channel) IN– Absolute/Common Mode IN– Voltage (IN– Corresponds GND – 0.3V VCC + 0.3V V to the Selected Negative Input Channel or COM) VIN Input Voltage Range (IN+ – IN–) Differential/Single-Ended l –FS +FS V FS Full Scale of the Input (IN+ – IN–) Differential/Single-Ended l 0.5VREF V LSB Least Significant Bit of the Output Code l FS/216 REF+ Absolute/Common Mode REF+ Voltage l 0.1 VCC V REF– Absolute/Common Mode REF– Voltage l GND REF+ – 0.1V V VREF Reference Voltage Range (REF+ – REF–) l 0.1 VCC V CS(IN+) IN+ Sampling Capacitance 11 pF CS(IN–) IN– Sampling Capacitance 11 pF CS(VREF) VREF Sampling Capacitance 11 pF I + DC_LEAK(IN ) IN+ DC Leakage Current Sleep Mode, IN+ = GND l –10 1 10 nA I – DC_LEAK(IN ) IN– DC Leakage Current Sleep Mode, IN– = GND l –10 1 10 nA I + l DC_LEAK(REF ) REF+ DC Leakage Current Sleep Mode, REF+ = VCC –100 1 100 nA I – DC_LEAK(REF ) REF– DC Leakage Current Sleep Mode, REF– = GND l –100 1 100 nA tOPEN MUX Break-Before-Make 50 ns QIRR MUX Off Isolation VIN = 2VP-P DC to 1.8MHz 120 dB 2488fb For more information www.linear.com/LTC2488 3
