IC manufacturers Texas Instruments

IC manufacturers (103)

Texas Instruments ADS4142 | Demoboard TIDA-01403

74-dB SNR, 10-MSPS, 14-Bit, Analog Front-End Reference Design for Thermal Imaging Cameras

Overview

TopologyOther Topology
IC revisionE1

Description

This reference design is built keeping an electronic imaging system in mind. Image sensors today force heavy demands on ADCs in terms of: excellent linearity (DNL < 0.5 LSB and INL < 4 LSB), high resolution (12- to 18-bit), high speed (up to 20 MSPS), and high SNR (> 74-dB SNR) to assure superior image quality and freedom from distortion over time. Enabled by the low-noise, high-speed amplifier, fully differential amplifier (FDA), high-speed ADC, and low-noise LDO from TI, this reference design demonstrates how to design a high-performance analog signal chain for digitizing the pixel-output signal in thermal imaging cameras.

Features

  • SNR, ENOB and THD: > 74 dB, 12-bit and < -84 dB
  • Sampling speed: front-end circuit optimized for 10MSPS or lesser
  • Analog input type: single-ended unipolar signal
  • Integral Non-Linearity (INL) < 1 LSB (typical) and Differential Non-Linearity (DNL) < 0.5 LSB (typical)
  • Output data interface: 1.8V parallel CMOS or DDR LVDS
  • Overall power consumption: < 80 mW

Typical applications

  • Thermal Imaging Camera

Products

Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
λDom typ.(nm)
Emitting Color
λPeak typ.(nm)
IV typ.(mcd)
VF typ.(V)
Chip Technology
50% typ.(°)
C
Tol. C
VR(V (DC))
Size
Operating Temperature
Q(%)
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
WL-SMCW SMT Mono-color Chip LED Waterclear, 625 nm, Red
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Dominant Wavelength [typ.]625 nm
Emitting ColorRed 
Peak Wavelength [typ.]630 nm
Luminous Intensity [typ.]250 mcd
Forward Voltage [typ.]2 V
Chip TechnologyAlInGaP 
Viewing Angle Phi 0° [typ.]140 °
Size0603 
Operating Temperature -40 °C up to +85 °C
Length1.6 mm
Width0.8 mm
Height0.7 mm
PackagingTape and Reel 
WE-CBF SMT EMI Suppression Ferrite Bead, –, –
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Size0805 
Operating Temperature -55 °C up to +125 °C
Length2 mm
Width1.2 mm
Height0.9 mm
Pad Dimension0.5 mm
Impedance @ 100 MHz1500 Ω
Maximum Impedance1800 Ω
Maximum Impedance70 MHz 
Rated Current 21000 mA
DC Resistance0.3 Ω
TypeHigh Current 
WCAP-CSGP MLCCs 25 V(DC), –, –
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Capacitance33 pF
Capacitance±5% 
Rated Voltage25 V (DC)
Size0402 
Operating Temperature -55 °C up to +125 °C
Q-Factor1000 %
Insulation Resistance10 GΩ
Ceramic TypeNP0 Class I 
Length1 mm
Width0.5 mm
Height0.5 mm
Pad Dimension0.25 mm
Packaging7" Tape & Reel