EL1881

Sync Separator, Low Power

Product Status: 量産中

OVERVIEW

The EL1881 video sync separator is manufactured using Elantec's high performance analog CMOS process. This device extracts sync timing information from both standard and non-standard video input. It provides composite sync, vertical sync, burst/back porch timing, and odd/even field detection. Fixed 70mV sync tip slicing provides sync edge detection when the video input level is between 0.5VP-P and -2VP-P (sync tip amplitude 143mV to 572mV). A single external resistor sets all internal timing to adjust for various video standards. The composite sync output follows video in sync pulses and a vertical sync pulse is output on the rising edge of the first vertical serration following the vertical pre-equalizing string. For non-standard vertical inputs, a default vertical pulse is output when the vertical signal stays low for longer than the vertical sync default delay time. The odd/even output indicates field polarity detected during the vertical blanking interval. The EL1881 is plug-in compatible with the industry-standard LM1881 and can be substituted for that part in 5V applications with lower required supply current.

The EL1881 is available in the 8 Ld PDIP and SOIC packages and is specified for operation over the full -40°C to +85°C temperature range.

KEY FEATURES

  • NTSC, PAL, SECAM, non-standard video sync separation
  • Fixed 70mV slicing of video input levels from 0.5VP-P to 2VP-P
  • Low supply current - 1.5mA typ.
  • Single +5V supply
  • Composite, vertical sync output
  • Odd/even field output
  • Burst/back porch output
  • Available in 8 Ld PDIP and SOIC packages
  • Pb-free available (RoHS Compliant)

PARAMETRICS

Parameters
EL1881
Basic Information
Production Status
量産中
スライシング固定 (70mV)
Yes
スライシング入力適応型
No
カラーバーストフィルタ (外部)
Yes
出力コンポジット
Yes
出力水平
No
出力垂直
Yes
出力バースト
Yes
出力奇数/偶数
Yes
出力同期振幅
No
複合伝播遅延
30 ns
IS
1.2 mA
認定レベル
Standard
CANサンプル
YES
温度範囲
-40 to +85

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