Product Details
The temperature stable ASNT6740-KHC analog amplifier is intended for use in any applications demanding high gain, bandwidth, and linearity while maintaining low noise and power consumption. Its extra-flat frequency response is ideal for PAM3 and PAM4 signals. The IC shown can receive a broad-band analog signal at its differential input dp/dn and return an amplified output at differential pins qp/qn with gain of up to 19dB. Low-speed analog control gncrl is available for gain adjustment from -8dB to 19dB. Digital control linsel allows to choose between higher-gain/lower-linearity and lower-gain/higher-linearity modes. Low-speed analog current controls efcrl and bufcrl are 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-34GHz can be achieved with these control voltages.
The part’s I/Os support the CML logic interface with on chip 50Ω termination to vcc and may be used differentially, AC/DC coupled, single-ended, or in any combination. In the DC-coupling mode, the input signal’s common mode voltage should comply with the specifications shown in ELECTRICAL CHARACTERISTICS within the datasheet. In the AC-coupling mode, the input termination provides the required common mode voltage automatically. It operates from a single +3.6V or -3.6V power supply.