intersil HSP50110 Manual
Update: 30 September, 2023
This is the technical manual of HSP50110 Digital Quadrature Tuner. The tuner provides many of the functions required for digital demodulation, including carrier LO generation and mixing, baseband sampling, programmable bandwidth filtering, baseband AGC, and IF AGC error detection. Serial control inputs are provided which can be used to interface with external symbol and carrier tracking loops. These elements make the DQT ideal for demodulator applications with multiple operational modes or data rates. The DQT may be used with HSP50210 Digital Costas Loop to function as a demodulator for BPSK, QPSK, 8-PSK OQPSK, FSK, FM, and AM signals. The DQT processes a real or complex input digitized at rates up to 52 MSPS. The channel of interest is shifted to DC by a complex multiplication with the internal LO. The quadrature LO is generated by a numerically controlled oscillator (NCO) with a tuning resolution of 0.012Hz at a 52MHz sample rate. The output of the complex multiplier is gain corrected and fed into identical low pass FIR filters. Each filter is comprised of a decimating low pass filter followed by an optional compensation filter. The decimating low pass filter is a 3 stage Cascaded-Integrator-Comb (CIC) filter. The CIC filter can be configured as an integrate and dump filter or a third order CIC filter with a (sin(X)/X)3 response. Compensation filters are provided to flatten the (sin(X)/X)N response of the CIC. If none of the filtering options are desired, then the input is directly fed into the FIR filter.
Brand: intersil
File format: PDF
Size: 202 KB
MD5 Checksum: 87ECEB8A01B050D0C1C09519673CEE38
Publication date: 28 March, 2012
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PDF Link: intersil HSP50110 Manual PDF