AS2521
AS2521 is Telephone Speech Circuit with Loudhearing and Handsfree manufactured by austriamicrosystems AG.
Preliminary
AS2520/21/20B/21B
Telephone Speech Circuit with Loudhearing and Handsfree
Austria Mikro Systeme International AG
Key Features u Line/speech circuit, loudhearing, handsfree and dc/dc converter on one 28 pin CMOS chip u Operating range from 13 to 100 mA (down to 5 mA with reduced performance) u Soft clipping control eliminating harsh distortion u Volume control of receive signal with squelch and automatic loop gain pensation u Line loss pensation pin selectable u Low noise (max.
- 72 dBmp) u Real or plex impedance adjustable u NET 4 patible u Dynamically controlled voice switching u Same monitor amplifier for loudhearing, handsfree and tone ringer u Very few...
