The document describes the features and characteristics of the ultralow power SD video filter ADA4431-1, including third-order low-pass video filter, 1 dB flatness out to 6 MHz, 27 dB rejection at 27 MHz, low quiescent current and low power-down current, load detection capability, SAG correction, low supply voltage of 2.5 V to 3.6 V, charge pump, capless output coupling, rail-to-rail output, high input-to-output isolation, 89 dB @ 1 MHz, small package with 3 mm × 3 mm LFCSP, low 0.55 mm package height, and wide operating temperature range of -40°C to +85°C.
The ADA4431-1 is an ultralow‑power, third‑order low‑pass video filter with load‑detection capability. It operates from a single 2.5 V to 3.6 V supply, offers 1 dB flatness to 6 MHz, 27 dB out‑of‑band rejection at 27 MHz, and a rail‑to‑rail output. The on‑board charge pump creates a negative voltage, enabling cap‑less output coupling and SAG correction for smaller external capacitors.
The device is supplied in a 16‑lead LFCSP package (3 mm × 3 mm, 0.55 mm height) and is rated for an industrial temperature range of –40 °C to +85 °C. Detailed pin functions, typical performance curves, thermal resistance, and maximum power‑dissipation data are included, along with an evaluation board layout and ordering guide.
| Supply Voltage Range | 2.5 V to 3.6 V |
|---|---|
| Quiescent Supply Current (Load Searching Mode) | 0.1 mA |
| 3‑dB Bandwidth | 7.1 MHz – 9.1 MHz |
| Linear Output Current | 40 mA |
| Power Supply Rejection (PSRR) | 36 dB – 42 dB at 100 kHz |
| Package Type | 16‑lead LFCSP (3 mm × 3 mm, 0.55 mm height) |
It operates from 2.5 V to 3.6 V.
It is delivered in a 16‑lead LFCSP package measuring 3 mm × 3 mm with a 0.55 mm height.
Yes, the device includes a load‑detect output pin that indicates when a video load is present.