REF70
- Low noise enables precision measurements:
- 1/f Noise (0.1 Hz to 10 Hz): 0.23 ppm p-p
- 10 Hz to 1 kHz: 0.35 ppm rms
- Low temperature drift coefficient:
- 2 ppm/°C maximum (-40°C to 125°C)
- High accuracy: ±0.025% maximum
- Humidity resistant hermetic ceramic package (LCCC)
- Excellent long-term stability (1k hr): 35 ppm
- Low dropout: 400 mV
- Designed for a wide range of applications:
- Wide input voltage up to 18 V
- Output current: ±10 mA
- Voltage options: 1.25 V, 2.5 V, 3 V, 3.3 V, 4.096 V, 5 V
- Ultra-flexible solution:
- Stable with 1-µF to 100-µF output low-ESR capacitor
- High PSRR: 107 dB at 1 kHz
- Operating temperature range: −40°C to +125°C
The REF70 is a family of high precision series voltage references that offers the industry’s lowest noise (0.23 ppm p-p), very low temperature drift coefficient (2 ppm/°C), and high accuracy (±0.025%). The REF70 offers a high PSRR, low drop-out voltage and excellent load and line regulation to help meet strict transient requirements. This combination of precision and features is designed for applications such as test and measurement that demand a precise reference to be paired with precision, high-resolution data converters such as ADS8900B, ADS127L01 and DAC11001A, to achieve optimal performance in the signal chain. The REF70 is also designed for noise-sensitive medical applications such as ultrasound and X-ray to help enable low-noise measurements from the analog front end.
The REF70 family is available in VSSOP and LCCC package options. The LCCC (FKH) package is a hermetically sealed ceramic package that allows for low, long-term drift for applications that require a stable reference over a long time period without calibration.
The REF70 is specified for the wide temperature range of −40°C to +125°C. The wide temperature range enables operation across various industrial applications.
Technical documentation
Design & development
For additional terms or required resources, click any title below to view the detail page where available.
REF70EVM — REF70 evaluation module for ultra-high-precision voltage reference with low noise and low drift
The REF70 evaluation module (EVM) is a platform for evaluating the REF70, which is an ultra-low-noise, high-precision voltage reference. REF70 offers an ultra-low 1/f noise of 0.23 ppmp-p during operation, while maintaining a very precise voltage output over temperature of 2 ppm/°C. REF70EVM (...)
ADC-DAC-TO-VREF-SELECT-DESIGN-TOOL — The ADC-TO-VREF-SELECT tool enables the pairing of TI ADCs, DACs, and series voltage references.
Supported products & hardware
Products
Series voltage references
PSPICE-FOR-TI — PSpice® for TI design and simulation tool
TIDA-010945 — Precision signal chain for digital multimeters reference design
Package | Pins | CAD symbols, footprints & 3D models |
---|---|---|
LCCC (FKH) | 8 | Ultra Librarian |
VSSOP (DGK) | 8 | Ultra Librarian |
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