The LM15851 device is a wideband sampling and digital tuning device. Texas Instruments giga-sample analog-to-digital converter (ADC) technology enables a large block of frequency spectrum to be sampled directly at RF. An integrated DDC (Digital Down Converter) provides digital filtering and down-conversion. The selected frequency block is made available on a JESD204B serial interface. Data is output as baseband 15-bit complex information for ease of downstream processing. Based on the digital down-converter (DDC) decimation and link output rate settings, this data is output on 1 to 5 lanes of the serial interface.
●The LM15851 device is available in a 68-pin VQFN package. The device operates over the Industrial (–40°C ≤ TA ≤ 85°C) ambient temperature range.
● Excellent Noise and Linearity up to and beyond FIN = 3 GHz
● Configurable DDC
● Decimation Factors from 4 to 32 (Complex Baseband Out)
● Usable Output Bandwidth of 800 MHz at
●4x Decimation and 4000 MSPS
● Usable Output Bandwidth of 100 MHz at
●32x Decimation and 4000 MSPS
● Low Pin-Count JESD204B Subclass 1 Interface
● Automatically Optimized Output Lane Count
● Embedded Low Latency Signal Range Indication
● Low Power Consumption
●Key Specifications:
● Max Sampling Rate: 4000 MSPS
● Min Sampling Rate: 1000 MSPS
● DDC Output Word Size: 15-Bit Complex (30 bits total)
● IMD3: −64 dBc (FIN = 2140 MHz ± 30 MHz at −13 dBFS)
● FPBW (–3 dB): 3.2 GHz
● Supply Voltages: 1.9 V and 1.2 V
● Power Consumption
● Decimate by 10 (4000 MSPS): 2 W
● Power Down Mode: <50 mW
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