AK4685 AKM [Asahi Kasei Microsystems], AK4685 Datasheet - Page 10

• Manufacturer Part Number: AK4685
• Description: Multi-channel CODEC with Differential Analog I/O
• Manufacturer: AKM [Asahi Kasei Microsystems]

Gain Drift
Output Voltage
Load Resistance
Load Capacitance
Power Supply Rejection
DAC to Headphone Output (HPL, HPR pin) Characteristics
S/(N+D)
S/N
Interchannel Isolation
Interchannel Gain Mismatch
Output Voltage
Load Resistance
Load Capacitance
Power Supply Rejection
Note 9. When 33kHz is input to the external input resistor (Ri), 36kHz is input to the feed back resistor (Rf) and
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,
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
Note 16. A more than 32Ω device can be connected after a 6.8Ω resistor in direct.
MS1106-E-00
+/-2.70Vpp(-1dB) or +/-0.003Vpp (-60dB) is input to the differential input ports.
the measurement frequency of headphone output is 20Hz ~ 20kHz.
output port.
(0dBFS.
(-6dBFS.
(“0” data, A-weighted)
AOUT+ = 2.83 x AVDD2/5
Note
AOUT= 1.21 x AVDD3/5
Note
14)
(AC Load.
14)
(Note
(Note
AINL1-
AINL1+
(Note
Note
16)
12)
Figure 1. ADC Input Circuit
11)
12)
Rf
Ri
Rf
(Note
Ri
- 10 -
15)
LAMPO1
LIN1-
LIN1+
LVCOM1
(Note
-
+
Pre-Amp
2.54
40
60
88
60
32
5
13)
2.83
1.21
50
50
60
66
98
80
50
3.12
300
0.8
30
-
[AK4685]
ppm/°C
Vrms
2009/08
Vpp
kΩ
pF
dB
dB
dB
dB
dB
dB
dB
pF
Ω