description:
Linear Technology Corporation introduces the industry's fastest 18-bit period-free delay SAR ADC (analog-to-digital converter) LTC2389-18. At sampling rates up to 2.5Msps, the LTC2389-18 achieves an unbeatable 99.8dB SNR and -116dB THD. Operating from a single 5V supply, the LTC2389-18 supports three analog input ranges that are pin-configurable, making it easy to interface with multiple signal links from a single device. For maximum SNR performance, the LTC2389-18 can be configured as a fully differential (±4.096V) input. The pseudo differential unipolar (0V to 4.096V) and bipolar (±2.048V) analog input ranges enable lower power single-ended drive and reduce the unwanted signals common to both inputs. The LTC2389-18 is ideal for demanding designs that require maximum signal swing at low power levels in noisy industrial environments.
Performance Summary: LTC2389-18
- 2.5Msps throughput rate
- ±3LSB INL (maximum)
- Guaranteed 18-bit, no missing code
- Analog input range configurable via pin:
- ±VREF full differential
- 0V to VREF pseudo differential unipolar
- ±VREF/2 pseudo differential bipolar
- At fIN = 2kHz, the SNR (typ) is 99.8dB (fully differential) / 95.2dB (pseudo-differential)
- THD (typ) is -116dB (fully differential) / -112dB (pseudo-differential) at fIN = 2kHz
- Guaranteed work to 125 ° C
- Single 5V power supply
- Internal 20ppm/°C (maximum) reference
- Internal reference buffer
- Power consumption is 162.5mW at 2.5Msps
- No pipeline delay, no cycle delay
- 1.8V to 5V I/O voltage
- Parallel and serial I/O interfaces
- 48-pin 7mm x 7mm LQFP and QFN packages
application:
- Medical imaging
- High speed, wide dynamic range data acquisition
- Industrial process control
- meter
- ATE (automatic test equipment)
The above is part of the information, see the PDF document for details!
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