6-Channel SAR ADCs for Industrial Monitoring and Portable
Instruments:The 14-bit LTC2351-14 is a 1.5Msps, low power SAR
ADC with six simultaneously sampled differential input
channels. It operates from a single 3V supply and features
six independent sample-and-hold amplifi ers and a single
ADC. The single ADC with multiple S/HAs enables excellent
range match (1mV) between channels and channel-tochannel
skew (200ps).
The versatile LTC2351-14 is ideally suited for industrial
monitoring applications such as 3-phase power line
monitoring to ensure line voltage compliance, portable
power line instrumentation, power factor correction, motor
control, and data acquisition. These applications may
be battery powered, and it is here that the LTC2351-14’s
low power and small size are desirable. Power consumption
is a mere 16.5mW, which extends battery life. The
3-wire serial interface means fewer pins than parallel
output devices, allowing the LTC2351-14 to fi t in a 32-pin,5mm × 5mm QFN package.