AK2303LV Datasheet, PDF (37/41 Pages) Asahi Kasei Microsystems – Dual PCM CODEC for PBX Analog Line Card

ASAHI KASEI
[AK2303LV]
APPLICATION CIRCUIT EXAMPLE
Analog input circuit(AMPT0,1)
AK2303LV has an op-amp at analog input of each channel. Each op-amp can be used as a gain adjustment.
Op-amp can be used as an inverting amplifier. Feedback resistor must be 10kΩ or larger.
R2
C1 R1
C1=0.47uF
R1=R2=33K ohm
AK2303LV
GSTn
VFTn
(n=0,1)
AMPTn
Analog output circuit(AMPR0,1)
AK2303LV has an op-amp at analog output stage of each channel to consist in an inverting amplifier for a gain
adjustment of 0dBm0 level. Feedback resistor must be 10kΩ or larger.
R1
R1=R2=33K ohm
R2
AK2303LV
GSRn
VFRn
BGREF
(n=0,1)
VRn
GAnR
2303-E-00
37
2001/09