AIT1032
Integrated Tuners
Application:
Integrated Analog/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 AIT1032 Integrated Analog/Digital Tuner with RF and IF Gain Control is a complete 1 GHz bandwidth tuner IC specifically designed to support both analog and digital 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 AIT1032 are ideal for use with today’s CATV systems, which include both analog and digital channel lineups in a densely-loaded spectrum. The AIT1032’s high level of integration minimizes board layout sensitivities and the amount of external circuitry required for a complete receiver solution. Separate IF outputs - one for analog signals and one for digital signals - further enable system solutions that minimize board layout space. The device operates from a single +5 V supply, and incorporates a programmable power-down mode.
The AIT1032 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, Analog IF Amplifier, Digital IF Amplifier with Gain Control, Dual PLL, and VCOs with integrated tanks
• Separate Digital and Analog IF Outputs
• 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
• 65 dB Gain (including external filter losses) through Analog Output
• 35 dB RF Gain Control Range
• 45 dB IF Gain Control Range (Digital Output)
• 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 Digital IF Output; 58 Analog IF Output |
| RF Gain Control Range | 30 Min |
| SSB Noise Figure (dB) Typ | 9.5 dB Max |
| Phase Noise (dBc/Hz) Max | -85 |
| Power Consumption (mA) Typ | - |
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