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REF80

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Temperature-controlled buried-Zener reference with 0.05ppm/°C drift and <1ppm stability

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REF80

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Data sheet Order now

Product details

Rating Catalog VO (V) 7.6 Temp coeff (max) (ppm/°C) 0.19 Features Buried Zener diode Vin (min) (V) 10 Vin (max) (V) 16.5 Iq (typ) (mA) 15 LFN 0.1 to 10 Hz (typ) (µVPP) 1.17 Operating temperature range (°C) -55 to 125
Rating Catalog VO (V) 7.6 Temp coeff (max) (ppm/°C) 0.19 Features Buried Zener diode Vin (min) (V) 10 Vin (max) (V) 16.5 Iq (typ) (mA) 15 LFN 0.1 to 10 Hz (typ) (µVPP) 1.17 Operating temperature range (°C) -55 to 125
LCCC (NAJ) 20 79.0321 mm² 8.89 x 8.89
  • 7.6V ultra-precision reference with minimal number of external components
  • Ultra-low temperature drift: 0.05ppm/°C
  • Excellent long term stability: 0.3ppm (1k hour to 5k hour)
  • Integrated heater with temperature stable indicator
  • 1/f noise (0.1Hz to 10Hz) : 0.12ppmpk-pk
  • Input Voltage range: 10V to 16.5V
  • Heater supply range: 10V to 42V
  • Hermetically sealed ceramic package (20 pin LCCC)
  • 7.6V ultra-precision reference with minimal number of external components
  • Ultra-low temperature drift: 0.05ppm/°C
  • Excellent long term stability: 0.3ppm (1k hour to 5k hour)
  • Integrated heater with temperature stable indicator
  • 1/f noise (0.1Hz to 10Hz) : 0.12ppmpk-pk
  • Input Voltage range: 10V to 16.5V
  • Heater supply range: 10V to 42V
  • Hermetically sealed ceramic package (20 pin LCCC)

The REF80 is a highly integrated ultra-low drift buried zener precision voltage reference. The REF80 combines a precision 7.6V reference with an internal heater to achieve extremely low temperature drift of 0.05ppm/°C. The integrated heater maintains the internal temperature of the die at a constant set point. This helps the reference voltage stay constant irrespective of ambient temperature variations. The device internal temperature is pre-programmed to eliminate design complexities. This allows for fast design cycles, easy bring up and no dependence on high-cost external precision components.

The REF80 family is available in a 20-pin LCCC package. The LCCC package is a hermetically sealed ceramic package that enables ultra-low long-term stability specification of 0ppm (after setteling), critical for applications that demand a long time period without calibration. The package also offers excellent immunity against humidity variation.

The REF80 is a highly integrated ultra-low drift buried zener precision voltage reference. The REF80 combines a precision 7.6V reference with an internal heater to achieve extremely low temperature drift of 0.05ppm/°C. The integrated heater maintains the internal temperature of the die at a constant set point. This helps the reference voltage stay constant irrespective of ambient temperature variations. The device internal temperature is pre-programmed to eliminate design complexities. This allows for fast design cycles, easy bring up and no dependence on high-cost external precision components.

The REF80 family is available in a 20-pin LCCC package. The LCCC package is a hermetically sealed ceramic package that enables ultra-low long-term stability specification of 0ppm (after setteling), critical for applications that demand a long time period without calibration. The package also offers excellent immunity against humidity variation.
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* Data sheet REF80 Temperature-Controlled Buried Zener Reference with 0.05ppm/°C Drift and < 1ppm Stability datasheet (Rev. A) PDF | HTML 27 Mar 2025
Technical article The benefits of extreme precision from buried Zener technology in calibration (Rev. B) PDF | HTML 26 Sep 2025
Technical article 嵌入式稽納技術在校準中的極高精度有何優勢 (Rev. A) PDF | HTML 16 Dec 2024
Technical article 보정에서 매립형 제너 기술의 최고의 정밀도의 이점 (Rev. A) PDF | HTML 16 Dec 2024
Certificate REF8EVM EU Declaration of Conformity (DoC) 18 Jul 2024

Design & development

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Evaluation board

REF8EVM — REF80 evaluation module

The REF8EVM is a precision voltage reference evaluation module that demonstrates the performance of high precision series reference device (REF80) and its internal heater from Texas Instruments (TI). The REF80 is a family of low drift, and low noise buried zener, internal heater compensated voltage (...)

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Design tool

ADC-DAC-TO-VREF-SELECT-DESIGN-TOOL — The ADC-TO-VREF-SELECT tool enables the pairing of TI ADCs, DACs, and series voltage references.

The ADC-TO-VREF-SELECT tool enables the pairing of TI analog-to-digital converters (ADCs) and series voltage references. Users can select an ADC device and the desired reference voltage, and the tool will list up to two voltage reference recommendations.
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PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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