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News
32-Bit SAR ADC with Digitally Filtered & 1Msps No Latency Outputs
2016-08-01 | ReturnThe LTC2508-32 is ideal for applications that simultaneously require precision measurement and fast tracking of signals. The exceptional 3.5ppm guaranteed maximum linearity, together with up to 145dB of dynamic range, enables the LTC2508-32 to make precision measurements in the presence of noise. Simultaneously, the high speed 1Msps output provides a 14-bit differential and 8-bit common mode representation of the input signal, enabling sophisticated control loop designs with early detection mechanisms. The LTC2508-32 further improves system accuracy while simplifying signal conditioning design by directly digitizing the input signal over the full input range with over 120dB of common mode rejection.
The LTC2508-32 features an integrated digital filter that can be configured to optimize the 32-bit high accuracy output’s noise performance and bandwidth, up to a maximum 145dB of dynamic range at an output data rate of 61sps. The integrated digital filter offers a minimum 80dB attenuation of out-of-band noise, relaxing analog anti-aliasing filter requirements andsignificantly reducing system complexity. The reduced data rate of the digitally filtered output also eases communication with slow processors.
The LTC2508-32 dissipates 24mW of power from a single 2.5V supply. The LTC2508-32 is available today in a space saving 7mm × 4mm 24-lead DFN package. Pricing for the LTC2508-32 starts at $8.95 each in 1,000-piece quantities. Samples and demo boards may be requested at www.linear.com/product/LTC2508-32, or by contacting your local Linear Technology sales office.
Summary of Features: LTC2508-32
• ±0.5ppm INL (Typ),
• 145dB Dynamic Range (Typ) at 61sps
• 131dB Dynamic Range (Typ) at 4ksps
• Guaranteed 32-Bit No Missing Codes
• Configurable Digital Filter with Synchronization
o Relaxed Anti-Aliasing Filter Requirements
• Dual Output 32-Bit SAR ADC
o 32-Bit Digitally Filtered Low Noise Output
o 14-Bit Differential + 8-Bit Common Mode 1Msps No Latency Output
• Wide Input Common Mode Range
• 1.8V to 5V SPI-Compatible Serial I/O
• Low Power: 24mW at 1Msps
• 24-Lead (7mm × 4mm) DFN Package
Pricing shown is for budgetary use only and may differ due to local duties, taxes, fees and exchange rates.
Source:http://www.linear.com/