dCSS Module

SD-Z

4 RF inputs with AGC and direct sampling
4 x 32 digital crossbar switch
32 output user bands with AGC
Direct-sampled DAC, 5022MHz sample rate
-8dBm maximum total output power
-23dBm maximum output power for each of 32 UBs
170-2350MHz output frequency range
1800MHz maximum active bandwidth to place 32 UBs
Chip temperature monitoring

Introduction
Specifications

4 IN - 1 OUT dCSS Module

The SD-Z dCSS Module is a digital channel stacker that combines four wideband ADCs, a digital crossbar switch, 32 high-speed channelizes, one RF output DAC, and an acquisition process.

The SD-Z directly samples each of the four 170-2350MHz input signal feeds. Up to 32 channels from the four input feeds can be digitally selected, filtered, and independently converted to the desired location in the 170-2350MHz output spectrum. One RF DAC with a 5GHz sample rate directly drives the analog output.

Application

DVB-S/DVB-T

Channel Stacker
Combiner

ISDB-T

Channel Stacker
Combiner

SAT-IF

Channel Converter
Amplifier

VHF/UHF

Channel Converter
Amplifier

Function

Digital Channel Stacking Function:

Programmable Output Power for each Output Channel:

Programmable Bandwidth for each Output Channel:

Input Ports
Input Port Number	4
Input Port Impedance	75 Ω
Input Frequency Range	170 ~ 2350 MHz
Input Return Loss	10 dB
Input Return Loss	Minimum: -60 dBm (48 dBµV) Maximum Aggregate: -8 dBm (100 dBµV)
Output Ports
Output Port Number	1
Output Port Impedance	75 Ω
Output Frequency Range	170 ~ 2350 MHz - Programmable
Output Return Loss	10 dB
Output Channels Number	32 UB - Programmable
Output Channel Bandwidth for Each	5 ~ 64 MHz - Programmable
Output Channel Bandwidth over All	1800 MHz
Output Channel Power Level for Each	-43 ~ -23 dBm (65 ~ 85 dBµV) - Programmable
Output Channel Power Ripple (36 MHz Bandwidth)	< 2 dB
System
Programming / Debug Interface	I2C / UART
Power Consumption	4.5 W @4 Inputs Ports with 32 Output Channels Enable
Power Supply Voltage	3.3V ± 0.3V
Dimension	45.0mm x 30.0mm x 4.6mm
Operating Temperature	-40°C ~ 60°C

Specifications are subject to change without notice