HMP8156ACNZ

Encoders, Decoders, Converters Overview

The HMP8156ACNZ is a fully integrated NTSC/PAL encoder designed to generate high-quality analog video from digital image data. It accepts YCbCr or RGB digital inputs via P0-P23 pins and processes overlay data with 2x upscaling capabilities for SIF video. The device features four 2x oversampling, 10-bit DACs that drive doubly-terminated lines, supporting analog output formats including Y/C plus two composite signals or RGB plus composite (SCART). It operates within a temperature range of 0°C to 70°C and is housed in a 64-lead PQFP package.

Encoders, Decoders, Converters Feature Summary

• Supports (M) NTSC and (B, D, G, H, I, M, N, CN) PAL standards with ITU-R BT.601 and square pixel operation.
• Accepts multiple digital input formats including 4:2:2 YCbCr, 4:4:4 RGB, and 8-bit BT.656.
• Provides flexible overlay mixing with seven colors and internal, external, or hard control options.
• Includes closed caption encoding, 2x upscaling of SIF video, and an I2C interface for configuration.

Encoders, Decoders, Converters Applications

• Multimedia PCs
• Video Conferencing systems
• Video Editing workstations

Encoders, Decoders, Converters Procurement Notes

Verify the component status before procurement as the datasheet indicates this part is not recommended for new designs. Confirm the specific ordering suffix matches the required RoHS compliance and Pb-free anneal specifications. Ensure compatibility with existing design ecosystems given the lack of a recommended replacement.

Encoders, Decoders, Converters Selection Notes

Select the HMP8156ACNZ when designing systems requiring NTSC or PAL encoding from digital sources. Consider the HMP8154 if vertical flicker filtering is necessary, as this feature is exclusive to that variant. Evaluate the need for SCART connectivity or standard composite outputs to determine if this encoder meets the specific analog interface requirements.

Encoders, Decoders, Converters Part Context

This component belongs to the HMP8154/HMP8156A family of NTSC/PAL encoders manufactured by Renesas Electronics (formerly Intersil). It is functionally similar to the HMP8154 but lacks the three-line vertical flicker filter. Related products include other encoders like the HMP8170-HMP8173 and decoders such as the HMP8112A.

Encoders, Decoders, Converters Replacement Considerations

The datasheet explicitly states there is no recommended replacement for this component. Designers should consult technical support for guidance on transitioning away from this obsolete part number.