AK4613 Datasheet, PDF (64/69 Pages) Asahi Kasei Microsystems – 4/12-Channel Audio CODEC

[AK4613]
5. External Analog Inputs Circuit
Figure 61 shows the input buffer circuit example 1. The input level of this circuit is 4.3Vpp (AK4613: typ. ±2.15Vpp).
5.1kΩ
Analog In
VP+
4.3Vpp
22μ ^10kΩ
VA
VP-
Bias NJM5532
10k
0.1μ 10μ
10k
VA = +3.3V
Bias _{VP+ = +12V}
VP- = -12V
4.7kΩ
4.7kΩ
NJM5532
Bias
2.15Vpp
AIN+
AK4613
AIN-
Figure 61. Input buffer circuit example 1 (DC coupled single-end input)
Figure 62 shows the input buffer circuit example 2. The input level of this circuit is 4.3Vpp (AK4613: typ. ±2.15Vpp).
Analog In
4.3Vpp
22μ ^10kΩ
VP+ = +12V
VP- = -12V
5.1kΩ
VP+
VP-
NJM5532
4.7kΩ
4.7kΩ
10μ
NJM5532
2.15Vpp
10μ
2.15Vpp
AIN+
AK4613
AIN-
Figure 62. Input buffer circuit example 2 (AC coupled single-end input)
Figure 63 shows the input buffer circuit example 3. The input level of this circuit is ±2.15Vpp (AK4613: typ. ±2.15Vpp).
Analog In
2.15Vpp
10μ
Analog In
2.15Vpp
10μ
AIN+
AK4613
AIN-
Figure 63. Input buffer circuit example 3 (AC coupled differential input)
MS1052-E-02
- 64 -
2010/03