AD1970JSTZRL

Overview

The AD1970JSTZRL is a digital BTSC encoder with integrated stereo ADC and DAC, housed in a 48-lead LQFP package. It operates from a single 3.3 V supply across a commercial temperature range of 0°C to 70°C. The device supports 24-bit resolution with a typical dynamic range of 87 dB for digital inputs and 74 dB for analog inputs. THD+N performance reaches -83 dB for digital inputs and -72 dB for analog inputs. Channel separation is typically 30 dB at frequencies between 30 Hz and 500 Hz. Power dissipation totals 277 mW, comprising 135 mW for the analog supply, 125 mW for the digital supply, and 17 mW for the PLL.

Feature Summary

• Complete BTSC encoder with pilot tone generation and subcarrier modulation
• Integrated stereo image enhancement via Phat-Stereo algorithm
• Dialog enhancement function for wide dynamic range sources
• Flexible serial data interface supporting multiple audio formats

Applications

• Digital set top box
• DVD player
• DVD recorder

Procurement Notes

Verify component authenticity through authorized Analog Devices distributors or certified partners. Confirm the specific ordering suffix matches the required package and temperature grade. Request original manufacturer documentation to validate specifications against current datasheet revisions before integration into production designs.

Selection Notes

Select this component for applications requiring compliant BTSC encoding with integrated signal processing. Ensure the system design accommodates the 3.3 V power supply requirements and the 48-pin LQFP footprint. Verify that the external clocking scheme aligns with the supported PLL modes or direct MCLK input options provided by the device architecture.

Part Context

This part belongs to the Analog Devices BTSC encoder family, designed specifically for television audio standards. It integrates functions typically found in separate components, such as encoding logic, analog-to-digital conversion, and digital-to-analog conversion, into a single monolithic IC to reduce board space and complexity.

Replacement Considerations

No public confirmed substitute part numbers are available.