AG2120-S

AG2120-S is a self-contained highly integrated PSTN interface circuit. The device allows flexible programming of many functions, including the dc voltage mask and impedances. The Ag2120 meets international safety and regulatory requirements. This device requires a minimum of external components and has been specified for ease of use, to allow reduced time to market. It is designed for all applications, including those where there is a high level of common mode interference, such as PABX, long loop applications and systems without a ground connection. It is approved by EN 60950-1:2001, IEC60950-1: First Edition 2001, AS/NZ60950-1: 2003, UL60950-1: 2003 1st edition, CSA 22.2 No.60950-1-03 1st edition.

• Transformer isolation providing high common-mode rejection (CMRR) for use in un-grounded systems
• Highly integrated with on-board loop switch and diode bridge
• Loop start circuit, ringing detect and loop current detection, parallel phone detect
• Tip-ring polarity detect (for caller line ID and remote metering) and on-hook reception
• Meets requirements of FCC Pt68, low cost power cross protection
• Programmable d.c. mask, line and network impedances, allows use in any market
• Silver telecom “design-in” assistance, +5V or +3.3V supply
• 2.5mA typ supply current, on-hook
• 5.7V typ off-hook DC voltage at (ILOOP = 20mA, DMa-DMb = 390K)
• Operating temperature range from -25 to 70°C, SIL package