Product Details
Fig. 1 Functional Block Diagram
The temperature stable ASNT6164-KMM linear non-blocking cross-switch 2×2 is intended for use in high-speed systems. The IC shown in Fig. 1 can deliver two different broad-band analog differential signals d0p/d0n and d1p/d1n to two differential outputs q0p/q0n and q1p/q1n with a nominal gain of 0dB. It can also be used as a two-channel analog mixer/adder of signals d0p/d0n and d1p/d1n. Two low-speed analog current controls Ief1c and Ief3c are available for bandwidth and peaking adjustments.
The assignment of inputs to outputs is performed through the external high-speed ports sel1 and sel2 that can be referenced to either vcc or vee. The assignment logic is shown within the product datasheet. When the low-speed single-ended control port on2 is set to vcc, it switches the circuit into mixer/adder mode with both inputs active at the same time.
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. The differential DC signaling mode is recommended for optimal performance. In particular, the specified output common-mode voltage level is guaranteed only in case of external single-ended 50Ohm DC termination to vcc.