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U4223B - Time-Code Receiver with A/D Converter

General Description

The U4223B is a bipolar integrated straight-through receiver circuit in the frequency range of 40 kHz to 80 kHz.

The device is designed for radio-controlled clock applications.

Key Features

  • D Very low power consumption D Very high sensitivity D High selectivity by using two crystal filters D Power-down mode available D Only a few external components necessary D 4-bit digital output D AGC hold mode Block Diagram PON VCC 1 GND 16 Power supply 3 9 Impulse circuit 2 4 AGC amplifier 5 6 14 15 Rectifier & integrator 7 REC 8 INT 13 SL CLK D3 12 17 D2 18 ADC D1 19 D0 20 Decoder 11 10 FLB FLA DEC IN SB Q1A Q1B Q2A Q2B Figure 1. Block diagram Ordering and Package Information Extended Typ.

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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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U4223B Time-Code Receiver with A/D Converter Description The U4223B is a bipolar integrated straight-through receiver circuit in the frequency range of 40 kHz to 80 kHz. The device is designed for radio-controlled clock applications. Features D Very low power consumption D Very high sensitivity D High selectivity by using two crystal filters D Power-down mode available D Only a few external components necessary D 4-bit digital output D AGC hold mode Block Diagram PON VCC 1 GND 16 Power supply 3 9 Impulse circuit 2 4 AGC amplifier 5 6 14 15 Rectifier & integrator 7 REC 8 INT 13 SL CLK D3 12 17 D2 18 ADC D1 19 D0 20 Decoder 11 10 FLB FLA DEC IN SB Q1A Q1B Q2A Q2B Figure 1.