max2102cwit Maxim Integrated Products, Inc., max2102cwit Datasheet
max2102cwit
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max2102cwit Summary of contents
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Rev 2; 10/98 General Description † The MAX2102/MAX2105 are low-cost direct-conver- sion tuner ICs designed for use in digital direct-broad- cast satellite (DBS) television set-top box units. The direct-conversion architecture reduces system cost compared to devices with IF-based architectures. ...
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Direct-Conversion Tuner ICs for Digital DBS Applications ABSOLUTE MAXIMUM RATINGS V to GND ..............................................................-0.5V to +7V CC RFIN ..........................................................................±2V RFIN ................................................................................±2V AGC, MOD, RFIN, RFIN, LO GND.....-0. AGC Current. ....................................................................±30mA IDC to ...
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AC ELECTRICAL CHARACTERISTICS (MAX2102 EV kit circuit (Figure 1); V 2150.125MHz -15dBm driven single-ended into LO; AGC set via servo loop for V LO AC-coupled 100Ω loads; 2kΩ from PSOUT to GND; T PARAMETER RFIN Input Third-Order Intercept ...
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Direct-Conversion Tuner ICs for Digital DBS Applications AC ELECTRICAL CHARACTERISTICS (continued) (MAX2102 EV kit circuit (Figure 1); V 2150.125MHz -15dBm driven single-ended into LO; AGC set via servo loop for V LO AC-coupled 100Ω loads; 2kΩ from PSOUT ...
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AC ELECTRICAL CHARACTERISTICS (continued) (MAX2102 EV kit circuit (Figure 1); V 2150.125MHz -15dBm driven single-ended into LO; AGC set via servo loop for V LO AC-coupled 100Ω loads; 2kΩ from PSOUT to GND; T PARAMETER IOUT, QOUT Output ...
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Direct-Conversion Tuner ICs for Digital DBS Applications (MAX2102 EV kit circuit (Figure 1 5V, PSGND = open, MOD = GND -15dBm driven single-ended into LO, AGC set via servo loop for V LO 100Ω ...
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EV kit circuit (Figure 1 -15dBm driven single-ended into LO, AGC set via servo loop for V LO 100Ω loads, 2kΩ from PSOUT to GND PORT IMPEDANCE vs. FREQUENCY (UNMATCHED) 100 50 REAL ...
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Direct-Conversion Tuner ICs for Digital DBS Applications (MAX2102 EV kit circuit (Figure 1 5V, PSGND = open, MOD = GND -15dBm driven single-ended into LO, AGC set via servo loop for V LO 100Ω ...
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PIN NAME Baseband +5V Supply. Bypass with a 10pF capacitor from this pin to pin 3 (GND), as close to the possible. Connect an additional 0.1µF capacitor in parallel with the 10pF capacitor (placement less ...
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Direct-Conversion Tuner ICs for Digital DBS Applications 100 0.1 F LOAD V CC 22pF V CC 22pF RF INPUT (50 SOURCE) 22pF 51 AGC CONTROL 1000pF 47 F 100 0.1 F LOAD V CC Figure 1. ...
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The quadrature downconverter follows the front-end AGC. Two mixers are driven by the previous stage AGC amplifier output. The mixer LO ports are fed with the two LO signals, which are 90° apart in phase. These quadrature LO signals are ...
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Direct-Conversion Tuner ICs for Digital DBS Applications GaAsFET can serve this function. This circuitry is usual- ly required in order to meet system noise-figure require- ments, may provide a buffered F-connector output, and may also be required to meet stringent ...
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Offset Correction The internal offset-correction amplifiers remove the DC offsets present in the baseband amplifiers. The offset- correction loop effectively AC-couples the baseband signal path, yielding a -3dB highpass corner frequency according to the following 100/C -3dB DC ...
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Direct-Conversion Tuner ICs for Digital DBS Applications Power-Supply Sequencing The MAX2102/MAX2105 have several +5V supply pins. The supply layout should star format, with a bypass capacitor that dominates the rise time of the supply at the center ...
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AT SIGNAL dBc POINT NO. 1 -30 0 DATA NYQUIST 0 AT SIGNAL dBc POINT NO. 2 -30 0 PASSBAND FILTER REQUIREMENTS: (1) <20% OF BAUD PERIOD DELAY RIPPLE (2) <0.1dB GAIN RIPPLE TRANSITION BAND FILTER REQUIREMENTS: < 2dB ...
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Direct-Conversion Tuner ICs for Digital DBS Applications ________________________________________________________Package Information 16 ______________________________________________________________________________________ ...