NXP Semiconductors ADC0801S040/DB

Overview

ADC0801S040 from NXP Semiconductors is an 8-bit parallel-output analog-to-digital converter optimized for video digitization and general-purpose high-speed sampling. It operates from 2.7 V to 5.5 V analog/digital supplies, achieves up to 40 MHz sampling rate, delivers 7.3 effective bits at 4.43 MHz input, and supports CMOS/TTL-compatible digital I/O with sleep mode reducing power to 4 mW. It is used in PAL video signal digitization within camera and camcorder front-ends.

For engineers reviewing the ADC0801S040 datasheet, ADC0801S040 pinout, ADC0801S040 application, or ADC0801S040 equivalent, this page provides verified technical context, package mapping, timing-critical specifications (including t_d(o), t_s(LH), and f_clk(max)), real-world linearity performance (±0.5 LSB INL), and validated alternatives for video ADC replacement scenarios.

Technical Context

The ADC0801S040 employs a resistor ladder architecture with externally configurable reference pins (RB, RM, RT) enabling precise full-scale range tuning between 1.5 V and 2.7 V differential reference voltage. Its analog input accepts DC-coupled signals up to 1.84 V_p-p without requiring external buffer amplifiers due to low 2 pF input capacitance and 20 kΩ input impedance at 1 MHz.

Digital operation uses separate supply domains: VDDA/VSSA for analog circuitry, VDDD/VSSD for logic core, and VDDO/VSSO for output drivers-enabling independent voltage scaling and noise isolation. The SLEEP pin places outputs in high-impedance state and reduces total current draw from 9 mA to 1.2 mA, supporting dynamic power management in burst-mode video acquisition systems.

Key Specifications

Pinout & Package

ADC0801S040 is housed in a 20-pin plastic shrink small outline package (SSOP20, SOT266-1) with 0.65 mm lead pitch and 4.4 mm body width. Pin 1 is marked by a notch or dot; leads are gull-wing shaped for surface-mount assembly.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 8-bit, 40 MHz ADC applications.

Compared with MAX1180BCUI+ and AD9280ARSZ, the ADC0801S040 offers unique three-rail supply separation and external reference configurability-critical for multi-ADC synchronization in professional video gear-while maintaining 40 MSPS throughput and proven PAL/NTSC performance.

Availability

ADC0801S040 is available at Aetrix Electronics and suitable for video digitization, camera interface, and automotive monitoring applications requiring stable component supply over extended production lifecycles.

Supply support for ADC0801S040 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 company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and consumer markets.

The ADC0801S040 belongs to NXP's legacy high-speed video ADC product line, designed specifically for cost-sensitive, high-fidelity analog video digitization in consumer and automotive imaging systems.

FAQ

What is the maximum clock frequency supported by the ADC0801S040?

The ADC0801S040 supports a maximum clock frequency of 40 MHz, as specified in the Quick Reference Data table and confirmed in the Characteristics section under f_clk(max). At this rate, it achieves full 8-bit conversion with guaranteed timing margins including t_d(o) ≤ 21 ns and t_s(LH) ≤ 5 ns, making it suitable for digitizing video signals up to 10 MHz bandwidth.

Does the ADC0801S040 require an external sample-and-hold circuit?

No, the ADC0801S040 does not require an external sample-and-hold circuit. Its architecture inherently supports direct sampling of analog inputs-including DC and low-frequency signals-without additional buffering, as explicitly stated in the Features section and validated by its 2 pF analog input capacitance and 20 kΩ input impedance at 1 MHz.

How does the sleep mode affect power consumption of the ADC0801S040?

When the SLEEP pin is asserted high, the ADC0801S040 enters sleep mode, reducing total supply current from 9 mA (active) to 1.2 mA and total power dissipation from 30 mW to 4 mW. This state disables the output drivers (placing D7–D0 in high-impedance) while preserving internal bias conditions for fast wake-up, ideal for burst-mode video acquisition.

What are the supply voltage requirements for the ADC0801S040 analog and digital sections?

The ADC0801S040 requires three independent supply domains: VDDA/VSSA (2.7–5.5 V analog supply), VDDD/VSSD (2.7–5.5 V digital core supply), and VDDO/VSSO (2.5–5.5 V output driver supply). Voltage differences must stay within ∆VDD limits: |VDDA − VDDD| ≤ 0.2 V and |VDDD − VDDO| ≤ 2.25 V, as defined in Table 1 and Table 6.

Can the ADC0801S040 be used with a single 3.3 V supply for all rails?

Yes, the ADC0801S040 can operate with 3.3 V applied to VDDA, VDDD, and VDDO simultaneously, as confirmed by the "VDDA = VDDD = VDDO = 3.3 V" condition used throughout the Characteristics tables. However, best practice per Application Information recommends separating analog and digital supplies with individual decoupling to maintain 7.3 effective bits performance.