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AD7622 数据表(PDF) 4 Page - Analog Devices |
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AD7622 数据表(HTML) 4 Page - Analog Devices |
4 / 28 page AD7622 Rev. 0 | Page 4 of 28 Parameter Conditions Min Typ Max Unit REFBUFIN Output Voltage REFBUFIN @ 25°C 1.19 V REFBUFIN Output Resistance 6.33 kΩ EXTERNAL REFERENCE PDREF = PDBUF = high Voltage Range REF 1.8 2.5 AVDD + 0.1 V Current Drain 2 MSPS throughput 150 μA REFERENCE BUFFER PDREF = high, PDBUF = low REFBUFIN Input Voltage Range REF = 2.048 V typ 1.05 1.2 1.30 V REFBUFIN Input Current REFBUFIN = 1.2 V 1 nA TEMPERATURE PIN Voltage Output @ 25°C 278 mV Temperature Sensitivity 1 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 2 MSPS throughput AVDD11 With internal reference 24 mA AVDD Without internal reference 23 mA DVDD 2.5 mA OVDD12 1 mA Power Dissipation11 With Internal Reference10 2 MSPS throughput 70 85 mW Without Internal Reference10 2 MSPS throughput 65 80 mW In Power-Down Mode12 PD = high 2 μW TEMPERATURE RANGE13 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 Analog Inputs section. 3 Linearity is tested using endpoints, not best fit. 4 LSB means least significant bit. With the ±2.048 V input range, 1 LSB is 62.5 μV. 5 See 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 FS. 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 wideband and warp modes. Tested in parallel reading mode. 11 With internal reference, PDREF and PDBUF are low; without internal reference, PDREF and PDBUF are high. 12 With all digital inputs forced to OVDD. 13 Consult sales for extended temperature range. |
类似零件编号 - AD7622 |
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类似说明 - AD7622 |
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