IC manufacturers Texas Instruments

IC manufacturers (103)

Texas Instruments LMX2820 | Demoboard TIDA-010230

Multi-channel RF transceiver, low-noise clocking reference design for radar and EW applications

Overview

TopologyOther Topology
IC revisionE1

Description

In modern radar and electronic warfare (EW) systems, active electronically-scanned array (AESA) antenna systems are often used with high speed multi-channel RF transceivers. These systems require very low noise clocking capable of precise channel-to-channel skew adjustment to achieve the optimal system performance like signal-to-noise ratio (SNR), spurious-free dynamic range (SFDR), IMD3 and effective number of bits (ENOB). This reference design demonstrates LMX2820- and LMK04832-based low-noise JESD204B-compliant clocks and provide to multiple AFE7950s up to X-band operation and synchronized them < 10 ps with improved system performance at 9-GSPS/3-GSPS DAC/ADC clocks.

Features

  • Multi-channel and scalable JESD204B-compliant clock
  • Low-phase noise clocking for RF sampling AFEs
  • Configurable phase synchronization to achieve low skew in multi-channel systems
  • Low noise and low ripple DC/DC achieves equivalent performance to LDO with improved efficiency
  • Demonstrates 8T8R synchronized RF sampling transceiver

Typical applications

  • AAS RF sampling (sub 6GHz)
  • electronic warfare, laser guidance

Products

Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
C
Tol. C
VR(V (DC))
Size
Operating Temperature
Q(%)
DF(%)
RISO
Ceramic Type
L(mm)
W(mm)
H(mm)
Fl(mm)
Packaging
Z @ 100 MHz(Ω)
Zmax(Ω)
Test Condition Zmax
IR 2(mA)
RDC max.(Ω)
Type
Samples
WCAP-CSGP MLCCs 10 V(DC), 470 pF, ±5%
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Capacitance470 pF
Capacitance±5% 
Rated Voltage10 V (DC)
Size0603 
Operating Temperature -55 °C up to +125 °C
Q-Factor1000 %
Insulation Resistance10 GΩ
Ceramic TypeNP0 Class I 
Length1.6 mm
Width0.8 mm
Height0.8 mm
Pad Dimension0.4 mm
Packaging7" Tape & Reel 
WCAP-CSGP MLCCs 16 V(DC), 2.2 nF, ±10%
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Capacitance2.2 nF
Capacitance±10% 
Rated Voltage16 V (DC)
Size0603 
Operating Temperature -55 °C up to +125 °C
Dissipation Factor3.5 %
Insulation Resistance10 GΩ
Ceramic TypeX7R Class II 
Length1.6 mm
Width0.8 mm
Height0.8 mm
Pad Dimension0.4 mm
Packaging7" Tape & Reel 
WCAP-CSGP MLCCs 25 V(DC), 68 nF, ±10%
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Capacitance68 nF
Capacitance±10% 
Rated Voltage25 V (DC)
Size0603 
Operating Temperature -55 °C up to +125 °C
Dissipation Factor3.5 %
Insulation Resistance7.4 GΩ
Ceramic TypeX7R Class II 
Length1.6 mm
Width0.8 mm
Height0.8 mm
Pad Dimension0.4 mm
Packaging7" Tape & Reel 
WE-CBF SMT EMI Suppression Ferrite Bead, –, –
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Size0402 
Operating Temperature -55 °C up to +125 °C
Length1 mm
Width0.5 mm
Height0.5 mm
Pad Dimension0.25 mm
Impedance @ 100 MHz120 Ω
Maximum Impedance200 Ω
Maximum Impedance450 MHz 
Rated Current 21200 mA
DC Resistance0.09 Ω
TypeHigh Current