Datasheet AD7124-4-EP (Analog Devices) - 6
| Manufacturer | Analog Devices |
| Description | 4-Channel, Low Noise, Low Power, 24-Bit, Sigma-Delta ADC with PGA and Reference |
| Pages / Page | 17 / 6 — AD7124-4-EP. Enhanced Product. Parameter1 Min. Typ. Max. Unit. Test. … |
| File Format / Size | PDF / 247 Kb |
| Document Language | English |
AD7124-4-EP. Enhanced Product. Parameter1 Min. Typ. Max. Unit. Test. Conditions/Comments
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AD7124-4-EP Enhanced Product Parameter1 Min Typ Max Unit Test Conditions/Comments
ANALOG INPUTS11 Differential Input Voltage Ranges12 ±VREF/gain V VREF = REFINx(+) − REFINx(−), or internal reference Absolute AIN Voltage Limits2 Gain = 1 (Unbuffered) AVSS − 0.05 AVDD + 0.05 V Gain = 1 (Buffered) AVSS + 0.1 AVDD − 0.1 V Gain > 1 AVSS − 0.05 AVDD + 0.05 V Analog Input Current Gain > 1 or Gain = 1 (Buffered) Low Power Mode Absolute Input Current ±1 nA Differential Input Current ±0.2 nA Analog Input Current Drift 25 pA/°C Mid Power Mode Absolute Input Current ±1.2 nA Differential Input Current ±0.4 nA Analog Input Current Drift 25 pA/°C Full Power Mode Absolute Input Current ±3.3 nA Differential Input Current ±1.5 nA Analog Input Current Drift 25 pA/°C Gain = 1 (Unbuffered) Current varies with input voltage Absolute Input Current ±2.65 μA/V Analog Input Current Drift 1.1 nA/V/°C REFERENCE INPUT Internal Reference Initial Accuracy 2.5 − 0.2% 2.5 2.5 + 0.2% V TA = 25°C Drift 2 10 ppm/°C Output Current 10 mA Load Regulation 50 μV/mA Power Supply Rejection 85 dB External Reference External REFIN Voltage2 0.5 2.5 AVDD V REFIN = REFINx(+) − REFINx(−) Absolute REFIN Voltage Limits2 AVSS − 0.05 AVDD + 0.05 V Unbuffered AVSS + 0.1 AVDD − 0.1 V Buffered Reference Input Current Buffered Low Power Mode Absolute Input Current ±0.5 nA Reference Input Current Drift 10 pA/°C Mid Power Mode Absolute Input Current ±1 nA Reference Input Current Drift 10 pA/°C Full Power Mode Absolute Input Current ±3 nA Reference Input Current Drift 10 pA/°C Unbuffered Absolute Input Current ±12 μA Reference Input Current Drift 6 nA/°C Normal Mode Rejection Same as for analog inputs Common-Mode Rejection 100 dB Rev. 0 | Page 6 of 17 Document Outline FEATURES ENHANCED PRODUCT FEATURES APPLICATIONS FUNCTIONAL BLOCK DIAGRAM TABLE OF CONTENTS REVISION HISTORY GENERAL DESCRIPTION SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS OUTLINE DIMENSIONS ORDERING GUIDE
AD7124-4-EP Enhanced Product Parameter1 Min Typ Max Unit Test Conditions/Comments
ANALOG INPUTS11 Differential Input Voltage Ranges12 ±VREF/gain V VREF = REFINx(+) − REFINx(−), or internal reference Absolute AIN Voltage Limits2 Gain = 1 (Unbuffered) AVSS − 0.05 AVDD + 0.05 V Gain = 1 (Buffered) AVSS + 0.1 AVDD − 0.1 V Gain > 1 AVSS − 0.05 AVDD + 0.05 V Analog Input Current Gain > 1 or Gain = 1 (Buffered) Low Power Mode Absolute Input Current ±1 nA Differential Input Current ±0.2 nA Analog Input Current Drift 25 pA/°C Mid Power Mode Absolute Input Current ±1.2 nA Differential Input Current ±0.4 nA Analog Input Current Drift 25 pA/°C Full Power Mode Absolute Input Current ±3.3 nA Differential Input Current ±1.5 nA Analog Input Current Drift 25 pA/°C Gain = 1 (Unbuffered) Current varies with input voltage Absolute Input Current ±2.65 μA/V Analog Input Current Drift 1.1 nA/V/°C REFERENCE INPUT Internal Reference Initial Accuracy 2.5 − 0.2% 2.5 2.5 + 0.2% V TA = 25°C Drift 2 10 ppm/°C Output Current 10 mA Load Regulation 50 μV/mA Power Supply Rejection 85 dB External Reference External REFIN Voltage2 0.5 2.5 AVDD V REFIN = REFINx(+) − REFINx(−) Absolute REFIN Voltage Limits2 AVSS − 0.05 AVDD + 0.05 V Unbuffered AVSS + 0.1 AVDD − 0.1 V Buffered Reference Input Current Buffered Low Power Mode Absolute Input Current ±0.5 nA Reference Input Current Drift 10 pA/°C Mid Power Mode Absolute Input Current ±1 nA Reference Input Current Drift 10 pA/°C Full Power Mode Absolute Input Current ±3 nA Reference Input Current Drift 10 pA/°C Unbuffered Absolute Input Current ±12 μA Reference Input Current Drift 6 nA/°C Normal Mode Rejection Same as for analog inputs Common-Mode Rejection 100 dB Rev. 0 | Page 6 of 17 Document Outline FEATURES ENHANCED PRODUCT FEATURES APPLICATIONS FUNCTIONAL BLOCK DIAGRAM TABLE OF CONTENTS REVISION HISTORY GENERAL DESCRIPTION SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS OUTLINE DIMENSIONS ORDERING GUIDE
