Features for the REF50
- Low temperature drift (maximum):
- Enhanced-grade (New): 2.5ppm/°C
- High-grade: 3ppm/°C
- Standard-grade: 8ppm/°C
- High accuracy (maximum):
- Enhanced-grade: 0.025%
- High-grade: 0.05%
- Standard-grade: 0.1%
- Low noise:
- Enhanced-grade: 0.5µVPP/V
- High/Standard-grade: 3µVPP/V
- Excellent long-term stability:
- 22ppm after first 1000 hours (SOIC-8)
- 50ppm after first 1000 hours (VSSOP-8)
- Wide input voltage support:
- Enhanced-grade: 42V
- High/Standard-grade: 18V
- High-output current: ±10mA
- Temperature range: -40°C to 125°C
Description for the REF50
The REF50xx is a family of low-noise, low-drift, very high precision voltage references. These references are capable of both sinking and sourcing current, and have excellent line and load regulation.
Excellent temperature drift (2.5ppm/°C) and high accuracy (0.025%) are achieved using proprietary design techniques. These features, combined with very low flicker noise (0.5µVPP/V), make the REF50xx family an excellent choice for use in high-precision data acquisition systems. REF50 family is available in enhanced grade (REF50xxEI), high grade (REF50xxI) and standard grade (REF50xxAI). The reference voltages are offered in 8-pin SOIC and VSSOP packages and are specified from –40°C to 125°C.
The REF50xxEI supports wide supply voltage rating of 42V with ultra-low IQ of 340µA. The wide supply range allows for direct connection to the battery or field supply. This also protects the device in case of power supply IC failure.