Analog Devices Inc./Maxim Integrated MAX9526AEI+T

Overview

The MAX9526AEI+T from Maxim Integrated is a low-power, automotive-grade NTSC/PAL video decoder IC that converts composite video (NTSC M/J/4.43, PAL B/G/H/I/D/M/N/60) into 8-bit or 10-bit ITU-R BT.656 YCbCr component output. It features a 10-bit 54MHz ADC with 4× oversampling, internal line-locked PLL for LLC generation, and operates from a single +1.8V analog/digital supply with separate +1.7V to +3.45V I/O rail. It is used in automotive rear-view camera systems requiring robust decoding under wide temperature variation.

For engineers reviewing the MAX9526AEI+T datasheet, MAX9526AEI+T pinout, MAX9526AEI+T application, or MAX9526AEI+T equivalent, key selection criteria include its -40°C to +125°C operation, 28-pin QSOP package, 200mW typical active power, 100µW shutdown current, and support for automatic standard detection and dual-input multiplexing with AGC.

Technical Context

The MAX9526AEI+T implements a full analog front-end with DC restoration DAC, analog AGC, and integrated 13MHz anti-aliasing LPF - eliminating external filtering. Its digital decoder includes a 5-line adaptive comb filter for cross-chrominance/luminance artifact reduction and supports both line-locked (LLC mode) and asynchronous sampling modes via programmable PLL bandwidth (180Hz–2000Hz).

Configuration is handled through a 16-register I²C interface (up to 400kHz), enabling runtime control of gain, brightness, contrast, hue, and output formatting (10-bit BT.656 with embedded TRS or 8-bit with discrete HS/VS). The device powers up fully operational and auto-detects NTSC/PAL standards without host intervention.

Key Specifications

Pinout & Package

MAX9526AEI+T is housed in a 28-pin QSOP (5.3mm × 10.2mm, 1.0mm height) with exposed thermal pad omitted (unlike TQFN variant). Pin functions are electrically identical to the MAX9526ATJ+ but mapped to QSOP layout.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar NTSC/PAL video decoder applications.

Compared with ADV7180BCPZ and TVP5150AM1IPBS, the MAX9526AEI+T uniquely integrates analog anti-aliasing filtering, automotive-grade temperature operation, and sub-100µW shutdown - making it optimal for space-constrained, battery-sensitive automotive camera modules where BOM simplification and thermal robustness are primary design drivers.

Availability

MAX9526AEI+T is available at Aetrix Electronics and suitable for automotive rear-view camera systems, blind-spot detection modules, and head-up display video injection requiring stable component supply across extended temperature and long production lifecycles.

Supply support for MAX9526AEI+T 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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for automotive, industrial, and communications markets.

The MAX9526 product line was designed specifically for automotive video acquisition - prioritizing low power, wide temperature operation, and robust decoding of degraded or nonstandard composite signals in safety-critical vision systems.

FAQ

What video standards does the MAX9526AEI+T support?

The MAX9526AEI+T supports all major NTSC and PAL variants: NTSC M, NTSC J, NTSC 4.43, PAL B/G/H/I/D, PAL M, PAL N, and PAL 60. It automatically detects and configures for the incoming standard at power-up without host intervention, ensuring plug-and-play compatibility with global video sources used in automotive and surveillance applications. The MAX9526AEI+T does not support SECAM.

Does the MAX9526AEI+T require external filtering on its video inputs?

No, the MAX9526AEI+T includes an integrated analog anti-aliasing lowpass filter with 13MHz 3dB bandwidth and 36dB attenuation at 53MHz, eliminating the need for external RC or LC filters. This reduces BOM count, PCB area, and potential signal integrity issues - a key advantage over alternatives like the ADV7180BCPZ which require external filtering. The MAX9526AEI+T's internal filter is optimized for composite video spectral content.

How does the MAX9526AEI+T handle nonstandard video inputs such as VCR playback?

The MAX9526AEI+T uses its NONSTD status flag (reported in register 0x00) to detect nonstandard carrier frequencies - common in VCR or time-base-corrected sources. Upon detection, it automatically switches the PLL to asynchronous mode, using adaptive poly-phase filtering to correct timing errors. This prevents frame tearing or sync loss without requiring host reconfiguration. The MAX9526AEI+T maintains valid BT.656 output even under these conditions.

What are the power supply requirements for the MAX9526AEI+T?

The MAX9526AEI+T requires three supplies: AVDD and DVDD at +1.8V (±0.1V), and DVDDIO between +1.7V and +3.45V. AVDD and DVDD may be supplied from the same 1.8V rail, while DVDDIO must be independently regulated to match the host processor's I/O voltage (e.g., 1.8V or 3.3V). All supplies require local 0.1µF ceramic decoupling; DVDD also needs a 10µF bulk capacitor. The MAX9526AEI+T draws 200mW typically in active mode.

Can the MAX9526AEI+T operate with an external clock instead of a crystal?

Yes, the MAX9526AEI+T accepts an external CMOS-level clock at 27MHz or 54MHz on the XTAL/OSC pin when XTAL_DIS = 1 is set in register 0x0D. XTAL2 must be grounded in this configuration. This allows use of system-level clock trees or low-jitter oscillators instead of discrete crystals - useful in designs where board space or EMI is constrained. The MAX9526AEI+T maintains full functionality including PLL locking and BT.656 output timing compliance.