MAX126

www.DataSheet4U.com 19-1319; Rev 2; 6/07 KIT ATION EVALU E L B A AVAIL 2x4-Channel, Simultaneous-Sampling 14-Bit DAS General Description Features o Four Simultaneous-Sampling T/H Amplifiers with Two Multiplexed Inputs (eight single-ended inputs total) o 3µs Conversion Time per Channel o Throughput: 250ksps (1 channel) 142ksps (2 channels) 100ksps (3 channels) 76ksps (4 channels) o Input Range: ±5V (MAX125) ±2.5V (MAX126) o Fault-Protected Input Multiplexer (±17V) o ±5V Supplies o Internal +2.5V or External Reference Operation o Programmable On-Board Sequencer o High-Speed Parallel DSP Interface MAX125/MAX126 The MAX125/MAX126 are high-speed, multichannel, 14-bit data-acquisition systems (DAS) with simultaneous track/holds (T/Hs). These devices contain a 14-bit, 3µs, successive-approximation analog-to-digital converter (ADC), a +2.5V reference, a buffered reference input, and a bank of four simultaneous-sampling T/H amplifiers that preserve the relative phase information of the sampled inputs. The MAX125/MAX126 have two multiplexed inputs for each T/H, allowing a total of eight inputs. In addition, the converter is overvoltage tolerant to ±17V; a fault condition on any channel will not harm the IC. Available input ranges are ±5V (MAX125) and ±2.5V (MAX126). An on-board sequencer converts one to four channels per CONVST pulse. In the default mode, one T/H output (CH1A) is converted. An interrupt signal (INT) is provided after the last conversion is complete. Convert two, th...