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MC44871 - PLL TUNING CIRCUIT

Description

(see Figure 1) Pin 1 2 3, 4 5 6, 7, 8 9 10 11 12 13 14 15 16 Symbol VTUN CP HF1, HF2 Gnd B2, B1, B0 B4 ADC VCC ADD SDA SCL Xtal Amp In Description Operational amplifier output which provides the tuning voltage DC DC Converter output (Charge Pump) Symmetrical HF inputs Ground PNP Band Buffer

Features

  • 3.0 mA sink I and 400 pF Load SDA/SCL Rise Time SCL Fall Time Pulse Width of Spikes Suppressed by the Input Filter 13 13 13, 14 13, 14 13,14 Tsp Pin 14.
  • Tbuf Tsu;sta Thd;sta Tsu;dat Thd;dat Tsu;sto Thd;sto Tack;low Symbol Min 0 200 500 500 0 0 500 500.
  • Typ.

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Other Datasheets by Motorola Semiconductor (now NXP Semiconductors)

Part Number Description
MC44802A PLL Tuning Circuit
MC44810 PLL Tuning Circuit
MC44817 TV AND VCR PLL TUNING CIRCUITS
MC44817B TV AND VCR PLL TUNING CIRCUITS
MC44818 TV AND VCR PLL TUNING CIRCUIT

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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Order this document by MC44871/D MC44871 Advance Information PLL Tuning Circuit with DC-DC Converter, I2C Bus and ADC The MC44871 is a tuning circuit for TV, VCR and Multimedia tuner applications. This device contains on one chip all the functions required for PLL control of a VCO. This integrated circuit also contains a high frequency prescaler and thus can handle frequencies up to 1.3 GHz. The MC44871 has an integrated dc/dc converter to generate the 30 V supply voltage for the tuning amplifier on the chip. A tuner using the MC44871 does not require an external 30 V supply. The MC44871 is controlled by a I2C bus, and has a chip address function. The MC44871 data format is the same as the MC44818.
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