LM1881 Datasheet – Video Sync Separator, 8 Pin ( PDF )

Part Number : LM1881

Function : Video Sync Separator / Horizontal Scan Rates to 150 kHz

Package : SOIC 8 Pin Type

Manufacturers : Texas Instruments

Pinouts :

LM1881 datasheet


Description :

The LM1881 Video sync separator extracts timing information including composite and vertical sync, burst/back porch timing, and odd/even field information from standard negative going sync NTSC, PAL (1)  and SECAM video signals with amplitude from 0.5V to 2V p-p. The integrated circuit is also capable of providing sync separation for non-standard, faster horizontal rate video signals.

The vertical output is produced on the rising edge of the first serration in the vertical sync period. A default vertical output is produced after a time delay if the rising edge mentioned above does not occur within the externally set delay period, such as might be the case for a non-standard video signal.

Features :

1. AC Coupled Composite Input Signal

2. >10-kΩ Input Resistance

3. <10-mA Power Supply Drain Current

4. Composite Sync and Vertical Outputs

5. Odd and Even Field Output

6. Burst Gate or Back Porch Output

7. Horizontal Scan Rates to 150 kHz

8. Edge Triggered Vertical Output

Other data sheets within the file :

LM1881M, LM1881M/NOPB, LM1881MX, LM1881MX/NOPB


LM1881 Datasheet PDF Download

LM1881 pdf

BIT1625 PDF Datasheet – 10-Bit Digital Video Decoder

Part Number : BIT1625

Function : 10-Bit Digital Video Decoder

Package : LQFP 64 pins Type

Manufactures : Beyond Innovation Technology

Images :

Description :

BIT1625 is a high performance single chip digital video decoder combining T-CON and OSD. The video decoder interprets commonly used NTSC/PAL/SECAM video content. Signals to the BIT1625 include analog video CVBS and Y/C. The automatic gain control (AGC) function of the analog/digital converter enhances the ability to handle weak and distorted signals. Superior 2D comb filters and advanced CTI processing result in clearer colors and more natural images.

Programmable timing control (TCON) allows the BIT1625 system to use most popular LCD screens. Programmable brightness, contrast, and color saturation, as well as built-in gamma correction, allow users to freely adjust displayed colors. Embedded OSDs make it very easy for system designers to develop easy-to-use user interfaces. The advanced display format controller converts 4:3 displays to 16:9 very smoothly. BIT1625 can be used in a traditional handheld LCD monitor. With its excellent image processing performance, it is also suitable for use in car TV/navigation systems and portable AV systems. [ … ]

General Features :

1. No external memory required

2. Two 10-bit video CMOS Analog-to-Digital Converters (ADCs) in differential CMOS style for best

3. Fully programmable static gain or automatic gain control (AGC) the selected CVBS or Y/C channel : 0~12db (Analog) and 0~18db (Digital)

4. Automatic Clamp Control (ACC) for CVBS, Y and C

5. On-chip clock generator

6. L-lock system clock frequencies


BIT1625 Datasheet