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AK4520A Arkusz danych(PDF) 5 Page - Asahi Kasei Microsystems |
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AK4520A Arkusz danych(HTML) 5 Page - Asahi Kasei Microsystems |
5 / 19 page ASAHI KASEI [AK4520A] 0163-E-00 1997/3 - 5 - ANALOG CHARACTERISTICS (Ta=25 °C; VA,VD=5.0V; AGND=DGND=0V; VREFH=VA; VREFL=AGND; fs=44.1kHz; SCLK=64fs, Signal Frequency=1kHz; 20bit Data; Measurement frequency=10Hz ∼20kHz; unless otherwise specified) Parameter min typ max Units ADC Analog Input Characteristics: Differential Inputs; Analog Source Impedance=470 Ω Resolution 20 Bits S/(N+D) (-0.5dB Input) (Note 3 ) VA=3V VA=5V 80 84 86 90 dB dB DR (-60dB Input, A-Weighted) (Note 4 ) VA=3V VA=5V 90 94 96 100 dB dB S/N (A-Weighted) (Note 4 ,5 ) VA=3V VA=5V 90 94 96 100 dB dB Interchannel Isolation 90 110 dB Interchannel Gain Mismatch 0.1 0.3 dB Gain Drift 20 ppm/ °C Input Voltage AIN=0.6x(VREFH-VREFL) VA=3V VA=5V 1.7 2.85 1.8 3.0 1.9 3.15 Vpp Vpp Input Resistance 20 30 k Ω Power Supply Rejection (Note 6 ) 50 dB DAC Analog Output Characteristics: Resolution 20 Bits S/(N+D) VA=3V VA=5V 84 80 90 90 dB dB DR (-60dB Output, A-Weighted) (Note 4 ) VA=3V VA=5V 92 96 96 100 dB dB S/N (A-Weighted) (Note 7,5 ) VA=3V VA=5V 92 96 96 100 dB dB Interchannel Isolation 90 110 dB Interchannel Gain Mismatch 0.1 0.3 dB Gain Drift 20 ppm/ °C Output Voltage AOUT=0.626x(VREFH-VREFL) VA=3V VA=5V 1.76 2.94 1.88 3.13 1.99 3.32 Vpp Vpp Load Resistance 10 k Ω Load Capacitance 25 pF Power Supply Rejection (Note 6 ) 50 dB Note: 3 . In case of single ended input, S/(N+D)=84dB(typ, @VA=5V). 4 . In case of 16bit, DR and S/N of ADC are 98dB. DR of DAC is 98dB. 5 . S/N measured by CCIR-ARM is 96dB at each converter and 94dB at ADC to DAC loopback. 6 . PSR is applied to VA,VD with 1kHz, 50mVpp. VREFH/VREFL pin is held a constant voltage. 7 . As the input data is "0", S/N is 100dB regardless of resolution. |
Podobny numer części - AK4520A |
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Podobny opis - AK4520A |
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