Analog Devices Inc./Maxim Integrated MAX11504CUB+

Overview

The MAX11504CUB+ from Maxim Integrated is a four-channel, 5th-order standard-definition video filter IC with +6dB output buffers, transparent input clamps, and flat passband response across all channels. It delivers 8.6MHz typical -3dB bandwidth, supports AC- or DC-coupled inputs/outputs, drives two 150Ω video loads per channel, and operates from a single +5V supply - ideal for anti-aliasing and DAC smoothing in SDTV signal chains.

For engineers reviewing the MAX11504CUB+ datasheet, MAX11504CUB+ pinout, MAX11504CUB+ application, or MAX11504CUB+ equivalent, key selection considerations include its flat passband response (vs. MAX11505's Channel 1 peaking), 0.1% differential gain error, 0.3° differential phase error, 80dB SNR, and µMAX-10 package compatibility with space-constrained video front-end designs.

Technical Context

The MAX11504CUB+ integrates four independent 5th-order lowpass filters with transparent clamps on each input and +6dB gain buffers on each output. Each channel implements a fixed-gain transfer function V_OUT = 2 × V_IN + 0.28V, enabling precise blanking-level control below 1V at the 75Ω termination point.

All channels feature identical frequency response: 8.6MHz typical -3dB bandwidth, 50dB stopband attenuation at 27MHz, and group delay variation under 20ns across 0–8MHz. The device uses BiCMOS process technology and requires dual bypassing (0.1µF + 1µF) on VCC to ensure stable operation at 24–35mA supply current.

Key Specifications

Pinout & Package

Package: 10-pin µMAX (U10+2), 3.0mm × 3.0mm body, 0.6mm pitch, exposed pad not electrically connected.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar video filter applications.

Compared with MAX11505CUB+, the MAX11504CUB+ eliminates channel-mismatch risk in multi-channel SD video systems by guaranteeing identical flat passband response across all four channels; compared with AD8174ARUZ, it reduces design time and PCB area by integrating complete 5th-order filtering and DC restoration in one µMAX-10 package.

Availability

MAX11504CUB+ is available at Aetrix Electronics and suitable for set-top box receivers, digital video recorders (DVRs), and security video systems requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.

Supply support for MAX11504CUB+ 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

Maxim Integrated (now part of Analog Devices) designs precision analog and mixed-signal ICs for industrial, communications, and consumer applications, with emphasis on integration, power efficiency, and reliability.

The MAX11504CUB+ belongs to Maxim's standard-definition video conditioning product line, engineered specifically to replace discrete filter/amplifier stages in legacy CVBS and component video signal paths while meeting broadcast-grade performance metrics.

FAQ

What is the primary function of the MAX11504CUB+ in an SD video signal chain?

The MAX11504CUB+ serves as a four-channel, integrated 5th-order lowpass filter and +6dB output buffer for standard-definition video signals. Its core function is anti-aliasing before ADC sampling or DAC smoothing after digital-to-analog conversion. In the MAX11504CUB+, each channel applies a fixed 2× gain plus 280mV DC offset to align sync tips, enabling direct drive of 75Ω back-terminated video loads without external AC-coupling capacitors.

Does the MAX11504CUB+ support both AC-coupled and DC-coupled video inputs?

Yes, the MAX11504CUB+ supports both AC- and DC-coupled inputs via its transparent clamp architecture. When DC-coupled, the clamp remains inactive and the input must stay within 0–1.4V relative to GND. When AC-coupled, the clamp activates to set the sync tip slightly below GND, accommodating unipolar signals like Y/R/G/B. This dual-mode capability eliminates the need for external DC restoration circuits in most SD video interfaces.

How does the MAX11504CUB+ differ from the MAX11505CUB+?

The MAX11504CUB+ provides flat passband response across all four channels, while the MAX11505CUB+ applies 0.8dB high-frequency peaking only on Channel 1 (8.9MHz -3dB bandwidth) and flat response on Channels 2–4 (8.6MHz). Both share identical pinout, package, supply, and output drive capability. The MAX11504CUB+ is selected when uniform channel matching is critical - such as in quad-split DVR displays - whereas MAX11505CUB+ targets systems needing HF compensation on one channel.

What is the maximum load the MAX11504CUB+ can drive per output channel?

The MAX11504CUB+ output buffers are rated to drive two standard 150Ω video loads (i.e., two parallel 75Ω back-terminated lines) per channel while maintaining specified differential gain/phase accuracy and blanking level <1V. This is achieved using +6dB gain and internal current limiting (80mA typical short-circuit current). Thermal derating must be applied when driving dual loads at +70°C ambient, as total package power dissipation reaches ~432mW under worst-case white-field conditions.

Is the MAX11504CUB+ compatible with NTSC and PAL video standards?

Yes, the MAX11504CUB+ is explicitly characterized for NTSC and PAL compliance. Its 8.6MHz -3dB bandwidth fully covers the NTSC luminance spectrum (0–4.2MHz) and PAL baseband (0–5.0MHz), with differential gain error ≤0.1% and differential phase error ≤0.3° - well within ITU-R BT.470 and EIA-770 specifications. The device's flat passband response and low group delay variation (<20ns) ensure minimal waveform distortion for both standards.