AIT1042
Integrated Tuners
Application:
Integrated Digital Tuner with RF and IF Gain Control
• CATV Tuners
• HDTV Tuners
• Set-Top Boxes
• PC TV Tuner Cards or Tuner-on-Board
Description:
The AIT1042 Integrated Digital Tuner with RF and IF Gain Control is a complete 1 GHz bandwidth tuner IC specifically designed to support digital video and data applications. It combines GaAs and Silicon technology to integrate the upconverter, downconverter, VCO, synthesizer, IF amplifier, RF gain control and IF gain control functions of a double-conversion tuner into one small package.
The exceptional linearity and low noise figure of the AIT1042 are ideal for use with today’s CATV systems with densely loaded spectrum. With integrated oscillator tank circuits, the AIT1042’s high level of integration minimizes board layout sensitivities and the amount of external circuitry required for a complete receiver solution. The integrated IF output further enables system solutions that minimize board layout space.The device operates from a single +5 V supply, and incorporates a programmable power-down mode.
The AIT1042 is offered in a small 7 mm x 7 mm x1 mm, 48 pin, RoHS compliant, surface mount package ideal for space-sensitive applications such as PC cards and multiple-tuner set-top boxes.
Features:
• Complete Integrated RF Tuner: Includes Upconverter with RF Gain Control, Downconverter, Digital IF Amplifier with Gain Control, Dual PLL, and VCOs with integrated tanks
• Digital IF Output - 35 to 50 MHz
• 54 to 1002 MHz Operation
• Operates from a Single +5 V Supply
• Integrated Oscillator Tank Circuits
• 78 dB Gain (including external filter losses) through Digital Output
• 35 dB RF Gain Control Range
• 45 dB IF Gain Control Range
• 2-Wire Serial Programming with 4 Addresses for Multiple Tuner Applications
• Programmable Power-Down Mode
• Programmable Charge Pump Currents
• RoHS Compliant Surface Mount Package
Specifications:
| RF Input Frequency (MHz) | 54-1002 |
| IF Output Frequency (MHz) | 35-50 |
| Conversion Gain (dB) Typ | 78 |
| RF Gain Control Range | 40 |
| SSB Noise Figure (dB) Typ | 8 |
| Phase Noise (dBc/Hz) Max | -85 Typ |
| Power Consumption (mA) Typ | - |
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