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L-Band Receiver/Base Band Down Converter
Notice: End-of-Life has been announced for this product. It has been superseded by the ICE-LB2D-M3. Please see End-of-Life for details.
LB2D-r2 Top
LB2D-r2 Bottom

This single-site module L-Band receiver accepts input ranging from 900 to 2200 MHz with input signal power ranging from -77 to +10 dBm. The software interface provided displays amplitude vs. time, amplitude vs. frequency (spectrum), and frequency vs. time (falling raster). Control of the L-Band receiver is also available via the software interface. The receive bandwidth is software-selectable from 1 to 65 MHz. Two ICE-LB2D modules can be placed on a single ICE-PIC card for dual-channel applications using a single 8-lane PCI Express slot.

An internal 10 MHz reference can be used by selecting the onboard 10 MHz reference, or an external 10 MHz reference can be provided via an SMB connector. An SMB connector for external 1 PPS input is available. The external 1 PPS input is stored in bit 0 of a 16-bit word that is 14-bit Data MSB aligned. When used for the ICE-PIC DSP card, an IRIG-B002 (DC IRIG-B) stream can be received via an SMB connector on the ICE-PIC card for accurate time reference.


  • Input: 900 to 2200 MHz
  • Input power range: -77 dBm to +10 dBm
  • Input variable-gain attenuator available for 80 dB of gain
  • Front-end attenuation control: 0 - 31 dB
  • Output bandwidth: 1 MHz to 65 MHz
  • Multiple clock source VCO driven by 10 MHz external reference or onboard 10 MHz reference
  • External 1PPS LVTTL input
  • Input power read-back capabilities
  • Single-site module for use with ICE-PIC series cards and ICEPOD subsystems


  • L-Band receiver
  • RF to IF conversion
  • RF to base band conversion
  • Communications
  • Instrumentation


Functional Block Diagram Actual L-Band Module
Logical diagram final.gif
Lb2d data sheet version final side1-resized.jpg

Input Specifications – Signal

Parameter Impedance Minimum Typical Maximum Units
Example analog input sources:

Antenna, antenna w/LNA, block down converters with 1 GHz IF, L-Band distribution switch outputs, etc., within 900-2200 MHz frequency range.

50 ohm -77 -20 to 0 +10 dBm
0.5 2.5 4.0 V p-p

Remarks: 0-31 dB attenuator should be used to attenuate high power input down to the typical range for best performance.

Input Specifications – External Reference and PPS

Parameter Impedance Minimum Typical Maximum Units Remarks
External Ref. - AC-coupled 50 ohm +/- 0.5 +/- 1.0 +/- 2.0 V p-p 10 MHz
External 1PPS 50 ohm 0.5 2.5 4.0 V p-p External LVTTL Level Input

Absolute Maximum Ratings

Parameter Value Units Conditions

DVcc 3.3

PPS Input 0 to 4
Vpeak into 50ohm

External Reference Input 0 to 4 Vpeak into 50ohm

Analog Input Power +10
dBm (50ohm ref.)

Operating Temperature -10 to +65 Degrees C
Storage Temperature -40 to +85 Degrees C

Warning: Operation of this module beyond any of these parameters may cause permanent damage. Exposure to absolute maximum ratings for extended periods may affect module reliability. Operation of the module beyond these specified parameters voids the factory warranty.


Connector Manufacturer Part Number Description J-Number
Signal Connections
Analog Out Rt. Angle SMA Connector J1
Reference In Digi-Key 131-1701-37 Rt. Angle SMB Connector J2
Trigger In Digi-Key 131-1701-37 Rt. Angle SMB Connector J3
Board Connection
Data Connection Samtec QTE-020-03-F-DA 40-Pin Connector J4
Power Connection Standard 2-pin Header J5
Physical Connection
Standoff (2 each)

Physical Connection
Mating Connectors
SMB (J2, J3) Amp # 414946-1
Huber Suhner # 11SMB-50-2-40
Data (J4) Samtec QSE-020-01-F-D-A 40-Pin Connector

ICE Interface Cables

ICE-CAB-SB5 (for J2, J3) 5 ft. BNC to SMB cable
ICE-CAB-SMA (for J1) 5 ft. BNC to SMA cable

Connectors Diagram

ICE-LB2D-r2-connectors-diagram 670x269.png


EOL has been declared for this model: see End-of-Life for details. Please call for pricing and availability.