AK4614 Datasheet, PDF (65/69 Pages) Asahi Kasei Microsystems – 6/12-Channel Audio CODEC

[AK4614]
Figure 64 shows the input buffer circuit example 4. The input level of this circuit is ±2.15Vpp (AK4614: typ. ±2.15Vpp).
Analog In
2.15Vpp
AIN+
10μ
AK4614
Open
AIN-
Figure 64. Input buffer circuit example 4 (AC coupled single-end input)
6. External Analog Outputs Circuit
Figure 65 shows the output buffer circuit example 1. The output level of this circuit is 4.16Vpp (AK4614: typ. ±2.08Vpp).
2.08Vpp
AOUT-
20Ω A 4.7kΩ
AK4614
AOUT+
2.08Vpp
2200p
20Ω
B
3900p
4.7kΩ
4.7kΩ
4.7kΩ
R1
470p
VP+
R1
470p
VP- _{VP+ = +12V}
NJM5532 _{VP- = -12V}
Analog Out
4.16Vpp
When R1=200Ω
fc=93.2kHz, Q=0.712, g=-0.1B at 40kHz
When R1=180Ω
fc=98.2kHz, Q=0.681, g=-0.2dB at 40kHz
Figure 65. Output buffer circuit example 1 (DC coupled differential output)
Figure 66 shows the output buffer circuit example 2. The output level of this circuit is 4.16Vpp (AK4614: typ. ±2.08Vpp).
2.08Vpp
AOUT-
AK4614
AOUT+
2.08Vpp
20Ω A
4.7kΩ
22μ
2200p
3900p
20Ω
4.7kΩ
B 22μ
4.7kΩ
4.7kΩ
R1
R1
470p
470p
VP+
Analog Out
4.16Vpp
VP- _{VP+ = +12V}
NJM5532
VP- = -12V
When R1=180Ω
fc=90.1kHz, Q=0.735, g=-0.04B at 40kHz
When R1=150Ω
fc=99.0kHz, Q=0.680, g=-0.23dB at 40kHz
Figure 66. Output buffer circuit example 2 (AC coupled differential output)
MS1025-E-00
- 65 -
2008/10