LTC1405IGN

The LTC1405IGN is a 12-bit sampling Analog-to-Digital Converter (ADC) from Analog Devices, Inc., capable of a 5MSPS sample rate. It operates from a single 5V or dual ±5V supply, consuming only 115mW of power. This easy-to-use device integrates a high dynamic range sample-and-hold circuit, a precision reference, and a programmable gain amplifier (PGA) input circuit.

The LTC1405IGN offers flexible input ranges of ±2.048V, ±1.024V, and ±0.512V, with a rail-to-rail input common mode range. The PGA provides digitally selectable 1x or 2x gain. It boasts excellent DC accuracy with ±1LSB INL and ±1LSB DNL over temperature. AC performance includes 71.3dB S/(N+D) and 85dB SFDR at the Nyquist frequency. The unique differential input sample-and-hold can acquire signals up to its 100MHz bandwidth, and 75dB CMRR allows for differential measurements to reject ground loops and common mode noise.

This ADC is available in a 28-pin narrow SSOP package, suitable for surface mount applications. A separate output logic supply allows direct connection to 3V components, enhancing system integration. Its features make it suitable for telecommunications, digital signal processing, multiplexed data acquisition systems, high-speed data acquisition, spectral analysis, and imaging systems.