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AD7621ASTRL Datasheet(PDF) 4 Page - Analog Devices |
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AD7621ASTRL Datasheet(HTML) 4 Page - Analog Devices |
4 / 32 page AD7621 Rev. 0 | Page 4 of 32 Parameter Conditions Min Typ Max Unit Turn-On Settling Time CREF = 10 μF 5 ms REFBUFIN Output Voltage REFBUFIN @ 25°C 1.2 V REFBUFIN Output Resistance 6.33 kΩ EXTERNAL REFERENCE PDREF = PDBUF = high Voltage Range REF 1.8 2.048 AVDD V Current Drain 3 MSPS throughput 250 μA REFERENCE BUFFER PDREF = high, PDBUF = low REFBUFIN Input Voltage Range 1.05 1.2 1.30 V TEMPERATURE PIN Voltage Output @ 25°C 273 mV Temperature Sensitivity 0.85 mV/°C Output Resistance 4.7 kΩ DIGITAL INPUTS Logic Levels VIL –0.3 +0.6 V VIH 1.7 5.25 V IIL –1 +1 μA IIH –1 +1 μA DIGITAL OUTPUTS Data Format7 Pipeline Delay8 VOL ISINK = 500 μA 0.4 V VOH ISOURCE = –500 μA OVDD − 0.3 V POWER SUPPLIES Specified Performance AVDD 2.37 2.5 2.63 V DVDD 2.37 2.5 2.63 V OVDD 2.309 3.6 V Operating Current10 3 MSPS throughput AVDD11 With internal reference 25.2 mA DVDD 3.6 mA OVDD 1 mA Power Dissipation11 With Internal Reference10 3 MSPS throughput 70 86 mW Without Internal Reference10 3 MSPS throughput 65 80 mW With Internal Reference 12 1.25 MSPS throughput 42 55 mW Without Internal Reference12 1.25 MSPS throughput 37 50 mW In Power-Down Mode13 PD = high 600 μW TEMPERATURE RANGE14 Specified Performance TMIN to TMAX –40 +85 °C 1 When using an external reference. With the internal reference, the input range is −0.1 V to VREF. 2 See the Analog Inputs section. 3 Linearity is tested using endpoints, not best fit. Tested with an external reference at 2.048 V. 4 LSB means least significant bit. With the ±2.048 V input range, 1 LSB is 62.5 μV. 5 See the Voltage Reference Input section. These specifications do not include the error contribution from the external reference. 6 All specifications in dB are referred to a full-scale input FSR. Tested with an input signal at 0.5 dB below full-scale, unless otherwise specified. 7 Parallel or serial 16-bit. 8 Conversion results are available immediately after completed conversion. 9 See the Absolute Maximum Ratings section. 10 In warp mode. Tested in parallel reading mode. 11 With internal reference, PDREF and PDBUF are low; without internal reference, PDREF and PDBUF are high. 12 In impulse mode. Tested in parallel reading mode. 13 With all digital inputs forced to OVDD. 14 Consult factory for extended temperature range. |
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