IC manufacturers Texas Instruments

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Texas Instruments ADS4142IRGZR | 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

  • Wireless Communications Infrastructure

Products

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C
Tol. C
VR(V (DC))
Size
Operating Temperature
Q(%)
RISO
Ceramic Type
L(mm)
W(mm)
H(mm)
Fl(mm)
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WCAP-CSGP MLCCs 25 V(DC), 33 pF, ±5%
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