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1. Description
The MAX3120ESA+ IrDA 1.2-compatible infrared transceiver is optimized for battery-powered, space-constrained applications. It consumes only 120µA while supporting data rates up to 115kbps over a wide 3V to 5.5V operating range, and features a 10nA shutdown mode to further extend battery life. The MAX3120 reduces the space required for IrDA applications by requiring a minimum of external components: photodiode, infrared LED, and current-setting resistor. Optical components are external to allow maximum flexibility in PC board design. The MAX3120 is available in 8-pin µMAX and SO packages. The µMAX package consumes half the board space of an 8-pin SO.
2. Features
1. IrDA 1.2 Compatible: 2.4kbps to 115.2kbps
2. +3V to +5.5V Single-Supply Operation
3. Flexible Optics Selection and Layout
4. 120µA Supply Current
5. 10nA Shutdown Supply Current
6. 200mA, High-Current Infrared LED Drive
3. Applications
1. IrDA Applications
2. Personal Digital Assistants (PDAs)
3. Palmtop Computers
4. Cell Phones
5. Hand-Held Equipment
6. Peripherals
4. Pin configuration
5. Pin Description
6. Detailed description
The MAX3120ESA+ is an IrDA 1.2 compliant infrared (IR) transceiver. By choosing appropriate external optics components, the MAX3120 will operate at data rates 2.4kbps to 115kbps, distance is 1cm to 1m. Due to its low-noise design, the MAX3120 Maximum achievable bit error rate (BER) of less than 10-8 data rate when used with the appropriate external Element. On-chip filtering rejects out-of-band Otherwise it will interfere with the ambient light signal Infrared communication. The MAX3120 also includes A high power LED driver capable of sinking 200mA. it Can drive most available IR LEDs at IrDA speeds 2.4kbps to 115kbps.
