The MAX9503 is a low-power, high-gain video amplifier that filters and amplifies standard-definition video signals. The MAX9503 internally integrates a reconstruction filter to smooth the DAC output video signal steps and spikes. The MAX9503 uses Maxim's DirectDrive technology, which uses an integrated charge pump and a linear regulator to generate a clean negative power supply to drive the sync below ground. The MAX9503 provides +6dB and +12dB gain options. The device operates from a 2.7V to 3.6V single supply and features a 10nA low-power shutdown mode. The MAX9503 is offered in space-saving 16-pin QSOP and 16-pin TQFN packages and is specified over the -40°C to +85°C extended temperature range.
The MAX9503 is a DirectDrive video amplifier that eliminates large output‑coupling capacitors and sets the video black level to ground. It features a six‑pole Butterworth reconstruction filter, integrated charge pump and linear regulator, and offers preset gains of 6 dB (MAX9503G) or 12 dB (MAX9503M). The device operates from a single 2.7 V to 3.6 V supply and includes a low‑power shutdown mode (<10 nA).
The datasheet provides detailed electrical characteristics, pin descriptions, package options (16‑pin QSOP and 16‑pin TQFN), and application guidelines such as layout, grounding, and bypassing. Typical applications include digital still cameras, smartphones, security cameras, and other space‑constrained portable devices.
| DC Voltage Gain (MAX9503G) | 6 dB |
|---|---|
| DC Voltage Gain (MAX9503M) | 12 dB |
| Reconstruction Filter Attenuation at 27 MHz | 50 dB |
The MAX9503G version provides a gain of 6 dB.
The filter offers 50 dB attenuation at 27 MHz.