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PNA7509 - 7-Bit A/D Conveter

General Description

The PNA7509 is a monolithic NMOS 7-bit analogue-to-digital converter (AOC) designed for video applications.

The device converts the analogue input signal into 7 -bit binary coded digital words at a sampling rate of 22 MHz.

Key Features

  • 7-bit resol ution.
  • No external sample and hold required.
  • High input impedance.
  • Binary or two's complement 3-state TTL outputs.
  • Overflow and underflow 3-state TTL outputs.
  • All.

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Other Datasheets by Philips Semiconductors (now NXP Semiconductors)

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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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DEVELOPMENT DATA This data sheet contains advance information and specifications are subject to change without notice. l___P_N_A_75_0_9___ 7-81T ANALOGUE-TO-DIGITAL CONVERTER (ADC 7) GENERAL DESCRIPTION The PNA7509 is a monolithic NMOS 7-bit analogue-to-digital converter (AOC) designed for video applications. The device converts the analogue input signal into 7 -bit binary coded digital words at a sampling rate of 22 MHz. The circuit comprises 129 comparators, a reference resistor chain, combining logic, transcoder stages, and TTL output buffers which are positive edge triggered and can be switched into 3-state mode. The digital output is selectable in two's complement or binary coding. The use of separate outputs for overflow and underflow detection facilitates full-scale driving.