12-Bit, Ultra-wideband RF sampling subsystem - LM15851

LM15851 (ACTIVE)

12-Bit, Ultra-wideband RF sampling subsystem

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Description

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.

For all available packages, see the orderable addendum at the end of the datasheet.

All trademarks are the property of their respective owners.

Features

  • 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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Parametrics Compare all products in Wideband Receivers

 
# Input Channels
Resolution (Bits)
Sample Rate (Max) (MSPS)
Analog Input BW (MHz)
Power Consumption (Typ) (mW)
Special Features
Logic Voltage DV/DD (Max) (V)
Logic Voltage DV/DD (Min) (V)
Analog Voltage AV/DD (Max) (V)
Analog Voltage AV/DD (Min) (V)
Operating Temperature Range (C)
Approx. Price (US$)
Pin/Package
LM15851
1    
15    
4000    
3300    
2000    
Decimating Filter
Differential Inputs
Out of Range Indicator
Power Down    
1.26    
1.14    
1.995    
1.805    
-40 to 85    
682.96 | 100u    
68VQFN    

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