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AK7742EQ Datasheet(PDF) 8 Page - Asahi Kasei Microsystems |
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AK7742EQ Datasheet(HTML) 8 Page - Asahi Kasei Microsystems |
8 / 16 page [AK7742] Rev.0.5b_PB 2008/08 - 8 - ■ ADC Characteristics (Ta=25ºC; AVDD=DVDD=3.3V; BICK=64fs; signal frequency 1kHz; Measurement bandwidth=20Hz~20kHz, fs=48kHz, ADC differential input, CKM mode 0 (CKM[2:0]=000), unless otherwise specified) Parameter min typ max Unit Resolution 24 Bits Dynamic characteristics S/(N+D) (-1dBFS) (Note 4) TDB 84 dB Dynamic range (A-weighted) (Note 4) TDB 96 dB S/N (A-weighted) (Note 4) TDB 96 dB Inter-channel isolation (f=1kHz) (Note 5) 90 105 dB DC accuracy Channel gain mismatch 0.1 0.3 dB Analog input Input voltage (differential input) (Note 6) ±1.85 ±2.00 ±2.15 Vp-p Input voltage (single-end input) (Note 7) 1.85 2.00 2.15 Vp-p Stereo ADC Input impedance (Note 8) 41 62 kΩ Note 4. This value is not guaranteed for single-ended inputs. Note 5. Indicates isolation between L and R when -1dBFS signal is applied. Note 6. Target input pins are AIN1LP, AIN1LN, AIN1RP, AIN1RN. Note 7. Target input pins are AIN2L, AIN2R, AIN3L, AIN3R. Note 8. Target input pins are AIN1LP, AIN1LN, AIN1RP, AIN1RN, AIN2L, AIN2R, AIN3L, AIN3R. ■ DAC Characteristics (Ta=25ºC; AVDD=DVDD=3.3V; BICK=64fs; signal frequency 1kHz; Measurement bandwidth=20Hz~20kHz, fs=48kHz, ADC differential input, CKM mode 0 (CKM[2:0]=000), unless otherwise specified) Parameter min typ max Unit Resolution 24 Bits Dynamic characteristics S/(N+D) (0dBFS) TBD 92 dB Dynamic range (A-weighted) TBD 106 dB S/N (A-weighted) TBD 106 dB Inter-channel isolation (f=1kHz)(Note 9) 90 105 dB DC accuracy Channel gain mismatch 0.2 0.5 dB Analog output Output voltage (Note 10) 3.36 3.66 3.96 Vp-p Load resistance 5 kΩ Stereo DAC Load capacitance 30 pF Note 9. Indicates isolation between each DAC’s of Lch and Rch when -1dBFS signal is applied. Note 10. Full scale output voltage. The output voltage scales with AVDD. ANALOG CHARACTERISTICS |
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