The no latency output is inherently perfectly matched to the digitally filtered output, avoiding the mismatch and drift typical in applications requiring an additional faster analog-to-digital converter (ADC) to monitor signal integrity in parallel with a precision ADC.
The wide input common mode range and high CMRR enable the LTC2500-32 to interface signals with varying common mode, simplifying the analog signal chain. Each of the two outputs provide a highly accurate representation of the voltage difference applied between the two input terminals.
The LTC2500-32 is part of a family of ultrahigh precision SAR ADCs, which also includes the 32-bit LTC2508-32, providing digital filters optimized for data acquisition applications, and the 24-bit LTC2512-24, providing digital filters optimized for signal processing applications requiring a flat passband. The LTC2512-24 and LTC2508-32 provide a 14-bit no latency output for monitoring signal integrity and four down sampling factors for trading off bandwidth with dynamic range. The LTC2500-32 provides a broader range of filters and down sampling factors.
The LTC2500-32 is available today in commercial and industrial (-40 C to 85 C) temperature grades. Pricing begins at $35.95 each in 1,000-piece quantities. An evaluation board for the LTC2500 SAR ADC family, the DC2222A, is available at www.linear.com/demo.
