Clare CYG2911
The CYG2911 is a Data Access Arrangement (DAA) module providing a complete telephone line interface circuit in a small 1.07" x 1.07" x 0.4" plastic package. This module incorporates a circuit which signals HIGH when another phone in parallel has been taken off-hook when the CYG2911 is off-hook. This feature is important for cable TV set-top boxes and direct broadcast satellite units which must hang-up (go on-hook) when a consumer needs the phone line to place a 911 or emergency call.FEATURES
● Transformer signal coupling● Complete ring detector circuit
● Low power hookswitch
● Electronic inductor/gyrator circuit
● Surge protection
● Caller ID pinout to external relay (optional)
● Transient protection zeners
● V.32 compatible
● FCC Compatible
● PC board mountable
● Parallel telephone off-hook detection
DESCRIPTION
The module is designed to meet FCC Part 68 requirements thus providing a low-risk design solution.APPLICATIONS
● Home medical devices● Plant monitoring equipment
● Security/alarm systems
● Utility meters
● Network routers
● PBX systems
● Telephony applications
● Set top boxes Approvals
● UL 1950/UL1459
● Compatible with U.S. and Canadian phone lines Ordering Information Part # CYG2911
DESCRIPTION
DAA Module Block Diagram CYG2911 LINE 1 LINE 2 1 2 GYRATOR/ CALLER ID RING R_LIM 18 17 470Ω VCC VCC GND HOOKSWITCH 14 13 911 CID1 CID2 911 OH RING 7 8 9 200k 47k R_LIM VCC VCC RING SURGE DETEC- PROTECTION TION 11 10 TIP RING RING Handling and Assembly Recommendations The CYG2911 products are not hermetically sealed and should not be exposed to any liquid-based rinsing processes.