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

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