Monolithic Temperature Sensor Implemented in Standard CMOS Process

^{September 19, 2025 News — With the continuous growth in demand for high-precision temperature monitoring in IoT and industrial sectors, voltage-output temperature sensors are becoming core components of system thermal management. The TC1047AVNBTR linear voltage-output temperature sensor, with its precise 10mV/°C output characteristics and micro-power design, provides reliable temperature monitoring solutions for various electronic devices.}

^{I. Core Technical Features}

^{The TC1047AVNBTR is a voltage-output temperature sensor with a linear output characteristic of 10mV/°C, achieving ±2°C measurement accuracy over the -40°C to +125°C range. The device operates from a single 2.5V to 5.5V power supply, consumes only 35μA during operation, and comes in a compact SOT-23B package. Its output voltage is directly compatible with ADC interfaces, providing a cost-effective solution for temperature monitoring applications.}

II.Output Voltage vs. Temperature Characteristic Curve Description

^{The TC1047 and TC1047A have an output voltage that varies linearly with temperature in degrees Celsius. Figure 4-1 shows a plot of the output voltage versus temperature for the TC1047 and TC1047A. The temperature slope is fixed at 10 mV/°C and the output voltage at 0°C is 500 mV.}

^{Technical Features}

^{Linearity: Typical nonlinear error less than 0.5mV}

^{Slope: Fixed 10mV/°C, no calibration required}

^{Reference Point: 500mV output at 0°C}

^{Range: Linear output across full -40°C to +125°C range}

^{Application Notes}

^{Output voltage can be directly connected to an ADC for digitization}

^{No external signal conditioning circuit required}

^{Suitable for direct interfacing with microcontrollers}

^{Linear output simplifies software temperature calculations}

^{Key Temperature Point Output Voltage}

^{This characteristic curve demonstrates the excellent linear output performance of the TC1047AVNBTR, providing a simple yet precise solution for temperature measurement applications.}

^{III. Typical Application Block Diagram Description}

^{Connection Diagram}

^{Power Management Module}

^{Operating Voltage: 2.5V to 5.5V single supply}

^{Decoupling Requirement: VDD pin requires 0.1μF ceramic capacitor}

^{Current Consumption: 35μA typical, 50μA maximum}

^{Grounding Design: Star grounding recommended to reduce noise interference}

^{Signal Output Characteristics}

^{Output Range: 100mV to 1750mV (-40°C to +125°C)}

^{Output Accuracy: ±2°C (full temperature range)}

^{Linearity: Fixed scale factor of 10mV/°C}

^{Output Impedance: Low impedance output, 10Ω typical}

^{Design Parameter Configuration}

^{1.Typical Application Configuration
Power Configuration}

^{Operating voltage: 3.3V ±5%}

^{Decoupling capacitor: 0.1μF ceramic capacitor (placed close to VDD pin)}

^{2.Signal Conditioning}

^{Direct connection: VOUT to MCU ADC input}

^{Long-distance transmission: RC filter recommended}

^{Software Calibration}

^{3.Zero-Point Calibration: Output should be 500mV at 0°C}

^{Slope Calibration: Fixed temperature coefficient of 10mV/°C}

^{Calculation Formula: Temperature (°C) = (Vout - 500) / 10}

^{Performance Optimization Suggestions}

^{Use an external reference voltage source to improve ADC accuracy}

^{Avoid parallel routing with high-frequency digital signals}

^{Add 0.1μF output filter capacitor in noisy environments}

^{Perform periodic self-calibration to enhance long-term stability}

^{This application diagram illustrates the typical connection method between the TC1047AVNBTR and a microcontroller. Its simple interface design and excellent linear characteristics make it an ideal choice for temperature monitoring applications.}

^{IV. Temperature Sensor Output Voltage Characteristic Curve}

^{Characteristics Description}

^{The TC1047A is a high-precision linear voltage-output temperature sensor with the following features:}

^{Linear Response: Output voltage exhibits perfect linearity with temperature}

^{Sensitivity: 10 mV/°C}

^{Offset Voltage: 500 mV output at 0°C}

^{Operating Range: -40°C to +120°C}

^{Output Voltage Range: 0.1V to 1.7V (corresponding to -40°C to 120°C)}

^{Application Scenarios}

^{This temperature sensor is ideally suited for applications requiring:}

^{Temperature measurement and monitoring}

^{Temperature compensation circuits}

^{Battery temperature management}

^{System overheat protection}

^{Ambient temperature detection}

^{The linear response provided by this sensor makes temperature reading straightforward—simply measure the output voltage and use the provided formula to calculate precise temperature values.}

^{V. Package Dimension Description}

^{Important Notes}

^{All dimensional tolerances are typically ±0.10mm unless otherwise specified}

^{PCB pad design should extend 0.3mm beyond pin size to ensure reliable soldering}

^{Package material is plastic and complies with RoHS standards}

^{Soldering temperature profile should follow J-STD-020 standard}

^{Recommended PCB Layout Dimensions}

^{Pad width: 0.6-0.8 mm}

^{Pad length: 1.2-1.5 mm}

^{Pin isolation: 0.5 mm minimum spacing}

For procurement or further product information, please contact:86-0775-13434437778,

​Or visit the official website:https://mao.ecer.com/test/icsmodules.com/,Visit the ECER product page for details: [链接]