Description
The CE5037 is a fully integrated direct conversion tuner for digital satellite receiver systems. It provides excellent immunity to composite undesired channels. The device also contains a RF Bypass for connecting to a second receiver module.
The CE5037 is simple to use, requiring no alignment or tuning algorithms and uses a minimum number of external components. The device is programmable via a I2C compatible bus.
The CE5037 is qualified for DVB-S2 8PSK receiver applications A complete reference design (CE9542) is available using CE6313 demodulator.

Features
*Direct conversion tuner for quadrature down conversion from L-band to Zero IF
*Symbol rate 1-45 MS/s
*High sensitivity < -83 dBm at 27.5 MS/s Code rate 7/8
*Independent RF AGC and baseband gain control
*Fifth order baseband filters with bandwidth adjustable from 6 to 43 MHz
*Fully integrated alignment-free low phase noise local oscillator
*Selectable RF Bypass
*Low power consumption 0.5W at 3.3V.
*28 pin 5x5 mm QFN Package

Applications
*DVB-S PayTV satellite receivers
*DSS satellite receivers
*DVB-S2 8PSK satellite receivers

WGCE5037882557, WGCE5037SL9FV882558

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The MicroTuner MT2022 is an advanced single-chip broadband tuner that has been optimized for high-performance analog and digital cable set-top boxes that require low composite distortion and noise under fully loaded (174 channels) cable environments. It is capable of
receiving frequencies in the 48 MHz 1.1 GHz range and of converting selected channel to an intermediate frequency (IF).
The MT2022’s low close-in phase noise allows it to be used for both digital and analog video signals. Its dual-conversion architecture, with no requirement for tracking filters, yields the desirable characteristics of traditional cable television tuners: controlled input impedance across the input band, low in-band emissions, and good selectivity.
The device is highly integrated, with on-chip components including a low noise amplifier (LNA), a first mixer that up-converts the input spectrum to a first IF of 1690 MHz,
image-reject mixer that downconverts the filtered first IF
spectrum to a standard second IF, a buffer amplifier for the IF output, an variable gain amplifier, and a serial interface to program the device as well as read back its status.
On-chip phase-locked loops PLLs) and voltage-controlled oscillators (VCOs) create a fully integrated frequency synthesis system, which runs off a single
external crystal. The use of high First Intermediate Frequency (FIF) allows unhindered transmission of Multimedia over Coax Alliance MoCA) band signals. The imagereject mixer provides excellent image rejection and eases the requirements of the first IF filter.

APPLICATIONS
• DSG in cable STBs
• All-digital cable STBs

FEATURES
• The MT2022 features many advantages including:
• On-chip amplifier for Forward Data Channel (FDC), which reduces bill of materials (BOM) cost while improving performance vs. solutions using a directional coupler.
• 1.1 GHz bandwidth
• Ease of multi-tuner front-end implementations
• Proven performance in dualfunction digital STB designs
• Eliminates the need for the 28V to 33V supplies typically required by traditional tuners
• 3.3V and 5V serial bus compatible
• Minimal external components
• No manually tuned parts required
• Simple interface to external filters
• Software shutdown mode
• Intermediate frequency (IF) output fully compatible with demodulators for DSG, DAVIC, DVB-C, DOCSIS™, EuroDOCSIS™, and other standards
• Can be used in conjunction with Microtune’s upstream amplifiers to create a complete RF front end for bidirectional STB applications

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