Product
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REF80
  • REF80
  • REF80

REF80

ACTIVE

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

Texas Instruments REF80 Product Info

1 April 2026 5

Parameters

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

Package

LCCC (NAJ)-20-79.0321 mm² 8.89 x 8.89

Features

  • 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)

Description

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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