AK7742 Ver la hoja de datos (PDF) - Asahi Kasei Microdevices
Número de pieza
componentes Descripción
Fabricante
AK7742 Datasheet PDF : 16 Pages
| |||
[AK7742]
ANALOG CHARACTERISTICS
■ 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
Stereo Resolution
24
Bits
ADC 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
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
Stereo Resolution
24
Bits
DAC 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
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.
Rev.0.5b_PB
-8-
2008/08
Share Link: 