IC manufacturers Texas Instruments

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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 Product seriesλDom typ.
(nm)
Emitting ColorλPeak typ.
(nm)
IV typ.
(mcd)
VF typ.
(V)
Chip Technology50% typ.
(°)
CTol. CVR
(V (DC))
SizeOperating TemperatureQ
(%)
RISOCeramic TypeL
(mm)
W
(mm)
H
(mm)
Fl
(mm)
PackagingZ @ 100 MHz
(Ω)
Zmax
(Ω)
Test Condition ZmaxIR 2
(mA)
RDC max.
(Ω)
Type Samples
150060RS75000SPEC
25 files WL-SMCW SMT Mono-color Chip LED Waterclear 625 Red 630 250 2 AlInGaP 140 0603 -40 °C up to +85 °C 1.6 0.8 0.7 Tape and Reel
742792097SPEC
8 files WE-CBF SMT EMI Suppression Ferrite Bead 0805 -55 °C up to +125 °C 2 1.2 0.9 0.5 1500 1800 70 MHz 1000 0.3 High Current
885012005043SPEC
8 files WCAP-CSGP MLCCs 25 V(DC)33 pF ±5% 25 0402 -55 °C up to +125 °C 100010 GΩ NP0 Class I 1 0.5 0.5 0.25 7" Tape & Reel
Order Code Data­sheet Simu­lation
150060RS75000SPEC
742792097SPEC
885012005043SPEC
Samples
Order Code Data­sheet Simu­lation Downloads Product seriesλDom typ.
(nm)
Emitting ColorλPeak typ.
(nm)
IV typ.
(mcd)
VF typ.
(V)
Chip Technology50% typ.
(°)
CTol. CVR
(V (DC))
SizeOperating TemperatureQ
(%)
RISOCeramic TypeL
(mm)
W
(mm)
H
(mm)
Fl
(mm)
PackagingZ @ 100 MHz
(Ω)
Zmax
(Ω)
Test Condition ZmaxIR 2
(mA)
RDC max.
(Ω)
Type Samples