TDA8783HL/C4,118

ADCs/DACs - Special Purpose Overview

The TDA8783HL/C4,118 is a 10-bit analog-to-digital interface designed for CCD cameras. It integrates a correlated double sampling (CDS) circuit, an automatic gain control (AGC) amplifier, and a low-power 10-bit ADC with a reference regulator. The device supports sampling frequencies up to 40 MHz and features fully programmable bandwidths via a 3-wire serial interface. Key electrical parameters include a typical total power consumption of 483 mW, an analog supply voltage range of 4.75 V to 5.25 V, and digital output compatibility with 2.5 V to 5.25 V logic levels.

ADCs/DACs - Special Purpose Feature Summary

• Integrated Correlated Double Sampling (CDS), AGC, and 10-bit ADC with adjustable bandwidths.
• Fully programmable via a 3-wire serial interface for gain, cutoff frequency, and standby modes.
• Includes an additional 8-bit DAC for analog settings and a 6 dB fixed gain analog output for iris control.
• Low power consumption of 483 mW (typical) with individual block standby capabilities.

ADCs/DACs - Special Purpose Applications

• CCD camera systems
• PC cameras
• Surveillance cameras
• Camcorders
• Digital still cameras

ADCs/DACs - Special Purpose Procurement Notes

Verify the package type LQFP48 (SOT313-2) and the specific ordering suffix /C4,118 against the manufacturer's current product specification. Confirm that the analog and digital supply requirements align with the design constraints, as the device requires separate decoupling for optimal performance.

ADCs/DACs - Special Purpose Selection Notes

Select this component when a high-speed 10-bit conversion is required for CCD sensors with integrated signal conditioning. Ensure the system can support the 3-wire serial interface for programming CDS/AGC bandwidths and gain. Verify that the PCB layout allows for separate analog and digital ground planes to minimize noise, as recommended in the application information.

ADCs/DACs - Special Purpose Part Context

This part is a Philips Semiconductors (now NXP) product, superseding the June 1999 version. It serves as a specialized interface solution for converting analog CCD signals into digital data, combining front-end amplification and sampling with high-resolution digitization in a single 48-lead package.

ADCs/DACs - Special Purpose Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult the manufacturer for direct replacements or pin-compatible alternatives if this specific variant is discontinued.

ADCs/DACs - Special Purpose FAQ

What is the maximum sampling frequency supported by the TDA8783?

The maximum clock frequency (fCLK(max)) is 40 MHz, which corresponds to the maximum sampling rate.

How is the AGC gain controlled?

The AGC gain is programmable from 4.5 dB to 34.5 dB in 0.1 dB steps using a 9-bit control input via the serial interface.

Can the device operate with lower digital supply voltages?

Yes, while the analog supply (VCCA) and digital core supply (VCCD) require 4.75 V to 5.25 V, the digital outputs (VCCO) can operate with a supply voltage between 2.5 V and 5.25 V.