Product Details
Fig. 1 Functional Block Diagram
The temperature stable ASNT6790-KHC 1-to-2 analog signal splitter is intended for use in high-speed interleaved ADCs or similar systems. Its extra-flat frequency response is ideal for PAM3 and PAM4 signals. The IC shown in Fig. 1 can receive a broad-band analog signal at its differential input dp/dn and effectively distribute it to two separate phase matched differential outputs q1p/q1n, q2p/q2n 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 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 (also see POWER SUPPLY CONFIGURATION). In the DC-coupling mode, the input signal’s common mode voltage should comply with the specifications shown in ELECTRICAL CHARACTERISTICS. In the AC-coupling mode, the input termination provides the required common mode voltage automatically. Optimal performance is achieved with differential DC signaling mode.