STMicroelectronics STV6111
The STV6111 satellite tuner is a direct-conversion (zero IF) receiver for digital TV broadcasting. The RF gain is monitored by an automatic gain control (AGC) circuit to ensure an optimal signal level for the two mixers. Each mixer, which down-converts the signal to the baseband, is followed by an AGC-controlled VGA, a low-pass filter and a second VGA.FEATURES
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● Specific operating mode for symbol rates up to 220 Msymb/s Compatible with 5-V and 3.3-V I2C bus RF-to-baseband direct conversion architecture Single 3.3-V DC supply, low consumption Outstanding performance in heavily loaded spectrum conditions Input frequency range: 950 to 2150 MHz Supports 1 to 60 Msymb/s using internal filter RF-AGC or channel-AGC support Extremely low-phase noise, compliant with DVB-S2 requirements using fractional-N synthesizer Low external component count Flexible crystal frequency output to drive the demodulator and/or other tuner ICs Continuously variable gain Programmable 6 to 50 MHz cut-off frequency (Butterworth 5th-order baseband filters)
APPLICATIONS
● Direct broadcasting satellite (DBS), satellite modems: BPSK, QPSK, 8PSK, 16/32 APSK modulations Set-top boxes, PCTV and iDTV Outdoor units●
● Package
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● VFQFPN-32 5 x 5 x 1 mm3 with exposed pad ECOPACK®, RoHS (2002/95/EC) compliant
DESCRIPTION
XTAL_OUT Clock management VC...