Datasheet LTC2430, LTC2431 (Analog Devices) - 3
| 制造商 | Analog Devices |
| 描述 | 20-Bit No Latency ∆Σ™ ADCs with Differential Input and Differential Reference |
| 页数 / 页 | 40 / 3 — CO VERTER CHARACTERISTICS The. denotes specifications which apply over … |
| 文件格式/大小 | PDF / 466 Kb |
| 文件语言 | 英语 |
CO VERTER CHARACTERISTICS The. denotes specifications which apply over the full operating
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LTC2430/LTC2431
U CO VERTER CHARACTERISTICS The
●
denotes specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25
°
C. (Notes 3, 4) PARAMETER CONDITIONS MIN TYP MAX UNITS
Input Common Mode Rejection DC 2.5V ≤ REF+ ≤ VCC, REF– = GND, ● 110 120 dB GND ≤ IN– = IN+ ≤ 5V (Note 5) Input Common Mode Rejection 2.5V ≤ REF+ ≤ VCC, REF– = GND, ● 140 dB 60Hz ±2% GND ≤ IN– = IN+ ≤ 5V, (Notes 5, 7) Input Common Mode Rejection 2.5V ≤ REF+ ≤ VCC, REF– = GND, ● 140 dB 50Hz ±2% GND ≤ IN– = IN+ ≤ 5V, (Notes 5, 8) Input Normal Mode Rejection (Notes 5, 7) ● 110 140 dB 60Hz ±2% Input Normal Mode Rejection (Notes 5, 8) ● 110 140 dB 50Hz ±2% Reference Common Mode 2.5V ≤ REF+ ≤ VCC, GND ≤ REF– ≤ 2.5V, ● 130 140 dB Rejection DC VREF = 2.5V, IN– = IN+ = GND (Note 5) Power Supply Rejection, DC REF+ = 2.5V, REF– = GND, IN– = IN+ = GND 110 dB Power Supply Rejection, 60Hz ±2% REF+ = 2.5V, REF– = GND, IN– = IN+ = GND, (Note 7) 120 dB Power Supply Rejection, 50Hz ±2% REF+ = 2.5V, REF– = GND, IN– = IN+ = GND, (Note 8) 120 dB
U U U U A ALOG I PUT A D REFERE CE The
●
denotes 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 ● GND – 0.3V VCC + 0.3V V IN– Absolute/Common Mode IN– Voltage ● GND – 0.3V VCC + 0.3V V VIN Input Differential Voltage Range ● – VREF/2 VREF/2 V (IN+ – IN–) REF+ Absolute/Common Mode REF+ Voltage ● 0.1 VCC V REF– Absolute/Common Mode REF– Voltage ● GND VCC – 0.1V V VREF Reference Differential Voltage Range ● 0.1 VCC V (REF+ – REF–) CS (IN+) IN+ Sampling Capacitance 1.5 pF CS (IN–) IN– Sampling Capacitance 1.5 pF CS (REF+) REF+ Sampling Capacitance 1.5 pF CS (REF–) REF– Sampling Capacitance 1.5 pF IDC_LEAK (IN+) IN+ DC Leakage Current CS = VCC, IN+ = GND ● –10 1 10 nA IDC_LEAK (IN–) IN– DC Leakage Current CS = VCC, IN– = VCC ● –10 1 10 nA IDC_LEAK (REF+) REF+ DC Leakage Current CS = VCC, REF+ = VCC ● –10 1 10 nA IDC_LEAK (REF–) REF– DC Leakage Current CS = VCC, REF– = GND ● –10 1 10 nA 24301f 3
U CO VERTER CHARACTERISTICS The
●
denotes specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25
°
C. (Notes 3, 4) PARAMETER CONDITIONS MIN TYP MAX UNITS
Input Common Mode Rejection DC 2.5V ≤ REF+ ≤ VCC, REF– = GND, ● 110 120 dB GND ≤ IN– = IN+ ≤ 5V (Note 5) Input Common Mode Rejection 2.5V ≤ REF+ ≤ VCC, REF– = GND, ● 140 dB 60Hz ±2% GND ≤ IN– = IN+ ≤ 5V, (Notes 5, 7) Input Common Mode Rejection 2.5V ≤ REF+ ≤ VCC, REF– = GND, ● 140 dB 50Hz ±2% GND ≤ IN– = IN+ ≤ 5V, (Notes 5, 8) Input Normal Mode Rejection (Notes 5, 7) ● 110 140 dB 60Hz ±2% Input Normal Mode Rejection (Notes 5, 8) ● 110 140 dB 50Hz ±2% Reference Common Mode 2.5V ≤ REF+ ≤ VCC, GND ≤ REF– ≤ 2.5V, ● 130 140 dB Rejection DC VREF = 2.5V, IN– = IN+ = GND (Note 5) Power Supply Rejection, DC REF+ = 2.5V, REF– = GND, IN– = IN+ = GND 110 dB Power Supply Rejection, 60Hz ±2% REF+ = 2.5V, REF– = GND, IN– = IN+ = GND, (Note 7) 120 dB Power Supply Rejection, 50Hz ±2% REF+ = 2.5V, REF– = GND, IN– = IN+ = GND, (Note 8) 120 dB
U U U U A ALOG I PUT A D REFERE CE The
●
denotes 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 ● GND – 0.3V VCC + 0.3V V IN– Absolute/Common Mode IN– Voltage ● GND – 0.3V VCC + 0.3V V VIN Input Differential Voltage Range ● – VREF/2 VREF/2 V (IN+ – IN–) REF+ Absolute/Common Mode REF+ Voltage ● 0.1 VCC V REF– Absolute/Common Mode REF– Voltage ● GND VCC – 0.1V V VREF Reference Differential Voltage Range ● 0.1 VCC V (REF+ – REF–) CS (IN+) IN+ Sampling Capacitance 1.5 pF CS (IN–) IN– Sampling Capacitance 1.5 pF CS (REF+) REF+ Sampling Capacitance 1.5 pF CS (REF–) REF– Sampling Capacitance 1.5 pF IDC_LEAK (IN+) IN+ DC Leakage Current CS = VCC, IN+ = GND ● –10 1 10 nA IDC_LEAK (IN–) IN– DC Leakage Current CS = VCC, IN– = VCC ● –10 1 10 nA IDC_LEAK (REF+) REF+ DC Leakage Current CS = VCC, REF+ = VCC ● –10 1 10 nA IDC_LEAK (REF–) REF– DC Leakage Current CS = VCC, REF– = GND ● –10 1 10 nA 24301f 3