LTC2257IUJ-12#PBF

LTC2257IUJ-12#PBF is a 12bit A/D converter designed for digitizing high frequency, wide dynamic range signals. Ultralow jitter of 0.17psRMS allows undersampling of IF frequencies with excellent noise performance. The digital outputs can be either full-rate CMOS, double-data rate CMOS, or double-data-rate LVDS. A separate output power supply allows the CMOS output swing to range from 1.2V to 1.8V. The ENC+ and ENC– inputs may be driven differentially or single-ended with a sine wave, PECL, LVDS, TTL or CMOS inputs. An optional clock-duty cycle stabilizer allows high performance at full speed for a wide range of clock-duty cycles. Applications include communications, cellular base stations, software-defined radios, portable medical imaging, multi-channel data acquisition and non-destructive testing.

• Shutdown and nap modes, serial SPI port for configuration
• CMOS, DDR CMOS or DDR LVDS outputs, integral linearity error is ±0.3LSB typical
• Offset error is ±1.5mV typical at (TA = 25°C)
• Full-power bandwidth is 800MHz typical at (TA = 25°C)
• Signal-to-noise ratio is 70.8dB typical at (TA = 25°C, AIN = -1dBFS)
• Spurious free dynamic range (2nd or 3rd harmonic) is 90dB typ at (5MHz input, TA = 25°C)
• Sampling frequency is 40MHz maximum at (TA = 25°C)
• Transition noise is 0.32LSBRMS typical at (TA = 25°C)
• Sample-and-hold acquisition delay jitter is 0.17psRMS typical at (TA = 25°C)
• Operating temperature range from -40°C to 85°C, 40-lead plastic QFN package

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party