[AK4685]
Gain Drift
50
-
ppm/°C
Output Voltage
Load Resistance
Load Capacitance
AOUT+ = 2.83 x AVDD2/5
(AC Load. Note 11)
2.54
5
2.83
3.12
Vpp
kΩ
pF
30
Power Supply Rejection
(Note 12)
50
dB
DAC to Headphone Output (HPL, HPR pin) Characteristics (Note 13)
S/(N+D)
S/N
(0dBFS. Note 14)
(-6dBFS. Note 14)
(“0” data, A-weighted)
40
60
88
60
60
66
98
80
dB
dB
dB
dB
Interchannel Isolation
Interchannel Gain Mismatch
0.8
dB
Vrms
Ω
Output Voltage
AOUT= 1.21 x AVDD3/5 (Note 15)
1.21
Load Resistance
(Note 16)
32
Load Capacitance
Power Supply Rejection
300
pF
dB
(Note 12)
50
Note 9. When 33kHz is input to the external input resistor (Ri), 36kHz is input to the feed back resistor (Rf) and
+/-2.70Vpp(-1dB) or +/-0.003Vpp (-60dB) is input to the differential input ports.
Rf
LAMPO1
Pr e-Amp
AINL1-
LIN1-
-
Ri
Ri
LIN1+
+
AINL1+
LVCOM1
Rf
Figure 1. ADC Input Circuit
Note 10. This value is the inter-channel isolation between all the channels of the LIN1-2 and RIN1-2.
Note 11. Load resistance via an AC coupling resistor.
Note 12. PSR is applied to AVDD1, AVDD2, AVDD3, DVDD1, DVDD2, DVDD3 and PVDD with 1kHz, 50mVpp.
Note 13. 6.8Ω resistors should be connected in direct to the headphone output pins. When fs=48kHz, 96kHz or 192kHz,
the measurement frequency of headphone output is 20Hz ~ 20kHz.
Note 14. When Load Resistance=6.8Ω+32Ω.
Note 15. 1.21Vrms (typ) is output to the output pin. When load resistance = 6.8Ω + 32Ω, 1Vrms (typ) is output at 32Ω
output port.
Note 16. A more than 32Ω device can be connected after a 6.8Ω resistor in direct.
MS1106-E-00
2009/08
- 10 -
AKM [ ASAHI KASEI MICROSYSTEMS ]
