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AD7849 Datasheet(PDF) 4 Page - Analog Devices |
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AD7849 Datasheet(HTML) 4 Page - Analog Devices |
4 / 20 page AD7849 Rev. C | Page 4 of 20 Parameter A Version B Version C Version Unit Test Conditions/Comments DIGITAL INPUTS Input High Voltage, VINH 2.4 2.4 2.4 V min Input Low Voltage, VINL 0.8 0.8 0.8 V max Input Current, IINH ±10 ±10 ±10 μA max Input Capacitance, CIN 10 10 10 pF max DIGITAL OUTPUTS Output Low Voltage, VOL 0.4 0.4 0.4 V max ISINK = 1.6 mA Output High Voltage, VOH 4.0 4.0 4.0 V min ISOURCE = 400 μA Floating State Leakage Current ±10 ±10 ±10 μA max Floating State Output Capacitance 10 10 10 pF max POWER REQUIREMENTS2 VDD 14.25/15.75 14.25/15.75 14.25/15.75 V min/V max VSS −14.25/−15.75 −14.25/−15.75 −14.25/−15.75 V min/V max VCC 4.75/5.25 4.75/5.25 4.75/5.25 V min/V max IDD 5 5 5 mA max VOUT unloaded, VINH = VDD – 0.1 V, VINL = 0.1 V ISS 5 5 5 mA max VOUT unloaded, VINH = VDD – 0.1 V, VINL = 0.1 V ICC 2.5 2.5 2.5 mA max VINH = VDD – 0.1 V, VINL = 0.1 V Power Supply Sensitivity3 0.4 1.5 1.5 LSB/V max Power Dissipation 100 100 100 mW typ VOUT unloaded 1 Guaranteed by design and characterization, not production tested. 2 The AD7849 is functional with power supplies of ±12 V. See the Typical Performance Characteristics section. 3 Sensitivity of gain error, offset error, and bipolar zero error to VDD, VSS variations. RESET SPECIFICATIONS These specifications apply when the device goes into reset mode during power-up or power-down sequence. VOUT unloaded. Table 2. Parameter All Versions Unit Test Conditions/Comments VA,1 Low Threshold Voltage for VDD, VSS 1.2 V max This is the lower VDD/VSS threshold voltage for the reset function. 0 V typ Above this, the reset is activated. VB, High Threshold Voltage for VDD, VSS 9.5 V max This is the higher VDD/VSS threshold voltage for the reset function. 6.4 V min Below this, the reset is activated. Typically, 8 V. VC, Low Threshold Voltage for VCC 1 V max This is the lower VCC threshold voltage for the reset function. 0 V typ Above this, the reset is activated. VD, High Threshold Voltage for VCC 4 V max This is the higher VCC threshold voltage for the reset function. 2.5 V min Below this, the reset is activated. Typically, 3 V. G2 RON 1 kΩ typ On resistance of G2; VDD = 2 V; VSS = −2 V; IG2 = 1 mA. 1 A pull-down resistor (65 kΩ) on VOUT maintains 0 V output when VDD/VSS is below VA. |
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Descripción similar - AD7849_15 |
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