Product Details
Fig. 1 Functional Block Diagram
The temperature stable ASNT6760-KHC analog signal selector 1-of-2 is intended for use in high-speed systems. Its extra-flat frequency response is ideal for PAM3 and PAM4 signals. The IC can deliver one of two different broad-band analog differential signals d1p/d1n and d2p/d2n to its differential output qp/qn with a nominal gain of 0dB. A low-speed analog current control icrl is available for power consumption and bandwidth adjustments. A low-speed analog control pkcrl is available for peaking adjustments at higher frequencies (above 25GHz). A relatively flat frequency response with variation of no more than ±0.5dB within DC-to-40GHz can be achieved with these two control voltages. Another low-speed analog control gncrl is available for gain adjustment. A nominal gain of 0dB can be achieved for all corner, voltage, and temperature variations. The active input selection is performed through the external high-speed single-ended port sel that can be referenced to either vcc or vee.
The part’s I/O’s support the CML logic interface with on chip 50Ohm termination to vcc and may be used differentially, AC/DC coupled, single-ended, or in any combination. The differential DC signaling mode is recommended for optimal performance.