NXP Semiconductors TDA8766G/C1,118

Overview

TDA8766G/C1,118 from NXP Semiconductors (formerly Philips) is a 10-bit high-speed analog-to-digital converter optimized for professional video digitization. It operates from 3.0 V to 5.25 V, supports up to 20 MHz sampling rate, delivers 9.3 effective bits at 1.0 MHz full-scale input, and features CMOS/TTL-compatible In-Range (IR) outputs - enabling direct interface with video processing FPGAs in broadcast camera front-ends.

For engineers reviewing the TDA8766G/C1,118 datasheet, TDA8766G/C1,118 pinout, TDA8766G/C1,118 application, or TDA8766G/C1,118 equivalent, this page provides verified technical context, validated pin functions, real-world video-system integration constraints, and confirmed drop-in alternatives for legacy video ADC replacement programs.

Technical Context

The TDA8766G/C1,118 implements a resistor-ladder-based architecture with external reference voltage inputs (VRB, VRM, VRT) and no internal sample-and-hold. Its analog input accepts DC-coupled or AC-coupled signals up to 1.83 V_p-p, with 8 pF input capacitance and 5 kΩ input impedance at 1 MHz - eliminating need for buffer amplifiers in high-bandwidth video paths.

Digital operation uses three independent supply domains: VDDA (analog), VDDD1/VDDD2 (dual digital), and VDDO (output stage), each rated 3.0–5.25 V with ≤±0.2 V inter-supply differential tolerance. Standby mode reduces total power from 53 mW to 4 mW while preserving last output state.

Key Specifications

Pinout & Package

LQFP32 package (SOT401-1), 5 × 5 × 1.4 mm body, 0.8 mm lead pitch, exposed pad not present.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-speed video ADC applications.

Compared with AD9203ARUZ and TDA8765T/N3,118, the TDA8766G/C1,118 uniquely balances legacy video system compatibility (multi-rail supplies, IR flag, VRM support) with broadcast-grade SNR - making it the optimal choice for maintaining timing integrity in field-deployed equipment upgrades.

Availability

TDA8766G/C1,118 is available at Aetrix Electronics and suitable for professional video capture, broadcast camera interfaces, and legacy broadcast equipment upgrades requiring stable component supply and long-term lifecycle continuity.

Supply support for TDA8766G/C1,118 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

NXP Semiconductors is a global semiconductor leader focused on secure connectivity solutions for automotive, industrial, and consumer applications.

The TDA8766G/C1,118 belongs to NXP's legacy high-speed video ADC product line, designed specifically for professional broadcast and camcorder systems requiring precise analog front-end digitization with minimal external components.

FAQ

What is the maximum clock frequency supported by the TDA8766G/C1,118?

The TDA8766G/C1,118 supports a maximum clock frequency of 20 MHz, as specified in the Quick Reference Data table. This enables full 10-bit resolution sampling at rates sufficient for NTSC/PAL video digitization and intermediate-frequency radio sampling. Operation above 20 MHz is not guaranteed and may result in increased INL/DNL errors or data corruption. The TDA8766G/C1,118 clock input requires minimum 15 ns HIGH and LOW pulse widths, with rise/fall times ≥1 ns to maintain jitter performance.

Does the TDA8766G/C1,118 require an external sample-and-hold circuit?

No, the TDA8766G/C1,118 does not require an external sample-and-hold circuit. Its architecture is explicitly designed for direct analog input sampling, as stated in the General Description and Features sections. The device achieves stable conversion with low analog input capacitance (8 pF) and high input impedance (5 kΩ at 1 MHz), allowing direct connection to video amplifier outputs. This eliminates added propagation delay, board area, and power consumption associated with external S/H circuits.

What are the supply voltage requirements for the TDA8766G/C1,118?

The TDA8766G/C1,118 requires four independent supply voltages: VDDA (analog, 3.0–5.25 V), VDDD1 and VDDD2 (digital, 3.0–5.25 V each), and VDDO (output stage, 3.0–5.25 V). All rails must be decoupled separately, and inter-supply voltage differences must not exceed ±0.2 V under normal operation. The TDA8766G/C1,118 draws 7.5–10 mA per analog and digital rail, and 1–2 mA on VDDO at 20 MHz, totaling 53 mW typical power dissipation at 3.3 V.

How does the In-Range (IR) output function on the TDA8766G/C1,118?

The IR output on the TDA8766G/C1,118 is an active-HIGH status flag indicating whether the analog input voltage (VI) falls within the valid 0–1023 code range. When VI is below VRB or above VRT, IR goes LOW - signaling underflow or overflow. This enables real-time clipping detection in video pipelines without requiring FPGA logic to monitor D9–D0 values. The IR signal is CMOS-compatible and shares the same timing characteristics as the data outputs, with 12 ns delay (VDDO = 4.75 V).

Can the TDA8766G/C1,118 operate with DC-coupled analog inputs?

Yes, the TDA8766G/C1,118 supports DC sampling as explicitly listed in its Features section. Its analog input (VI) accepts DC-coupled signals referenced to VSSA, enabling use in black-level clamping, sensor calibration, and offset correction circuits. When using AC coupling, an external bias or clamping level must be applied to pin 14 (VI) per Application Information note (4). The device's DC accuracy is maintained via precision reference ladder (VRB/VRT) and low offset voltages (±135 mV).