REF7040 Series

Ultra-high-precision voltage reference with low noise and low drift

Catalog

Ultra-high-precision voltage reference with low noise and low drift

Part	Noise - 10Hz to 10kHz	Current - Output	Output Type	Mounting Type	Voltage - Output (Min/Fixed)	Voltage - Input [Max]	Voltage - Input [Min]	Reference Type	Operating Temperature [Min]	Operating Temperature [Max]	Package / Case	Supplier Device Package	Temperature Coefficient	Noise - 0.1Hz to 10Hz	Current - Supply	Tolerance
Texas Instruments REF7050QFKHT	0.35 ppmrms	10 mA	1.81 mOhm	Surface Mount	5 V	18 V	5.4 V	Series	-40 °C	125 °C	8-CLCC	8-LCCC (5x5)	2 ppm/°C	0.23 ppmp-p	6.5 mA	0.025 %
Texas Instruments REF7030QFKHT	0.35 ppmrms	10 mA	1.81 mOhm	Surface Mount		18 V	3.7 V	Series	-40 °C	125 °C	8-CLCC	8-LCCC (5x5)	2 ppm/°C	0.23 ppmp-p	7.5 mA	0.025 %
Texas Instruments REF7012QFKHT	0.35 ppmrms	10 mA	1.81 mOhm	Surface Mount	1.25 V	18 V	2.75 V	Series	-40 °C	125 °C	8-CLCC	8-LCCC (5x5)	2 ppm/°C	0.25 ppmp-p	6.5 mA	0.025 %
Texas Instruments REF7025QFKHT	0.35 ppmrms	10 mA	1.81 mOhm	Surface Mount	2.5 V	18 V	2.5 V	Series	-40 °C	125 °C	8-CLCC	8-LCCC (5x5)	2 ppm/°C	0.23 ppmp-p	6.5 mA	0.025 %
Texas Instruments REF7040QFKHT	0.35 ppmrms	10 mA	1.81 mOhm	Surface Mount	4 V	18 V	4.496 V	Series	-40 °C	125 °C	8-CLCC	8-LCCC (5x5)	2 ppm/°C	0.23 ppmp-p	7.5 mA	0.025 %

Catalog

Ultra-high-precision voltage reference with low noise and low drift

Key Features

• Low noise enables precision measurements:1/f Noise (0.1 Hz to 10 Hz): 0.23 ppm p-p10 Hz to 1 kHz: 0.35 ppm rmsLow temperature drift coefficient:2 ppm/°C maximum (-40°C to 125°C)High accuracy: ±0.025% maximumHumidity resistant hermetic ceramic package (LCCC)Excellent long-term stability (1k hr): 35 ppmLow dropout: 400 mVDesigned for a wide range of applications:Wide input voltage up to 18 VOutput current: ±10 mAVoltage options: 1.25 V, 2.5 V, 3 V, 3.3 V, 4.096 V, 5 VUltra-flexible solution:Stable with 1-µF to 100-µF output low-ESR capacitorHigh PSRR: 107 dB at 1 kHzOperating temperature range: −40°C to +125°CLow noise enables precision measurements:1/f Noise (0.1 Hz to 10 Hz): 0.23 ppm p-p10 Hz to 1 kHz: 0.35 ppm rmsLow temperature drift coefficient:2 ppm/°C maximum (-40°C to 125°C)High accuracy: ±0.025% maximumHumidity resistant hermetic ceramic package (LCCC)Excellent long-term stability (1k hr): 35 ppmLow dropout: 400 mVDesigned for a wide range of applications:Wide input voltage up to 18 VOutput current: ±10 mAVoltage options: 1.25 V, 2.5 V, 3 V, 3.3 V, 4.096 V, 5 VUltra-flexible solution:Stable with 1-µF to 100-µF output low-ESR capacitorHigh PSRR: 107 dB at 1 kHzOperating temperature range: −40°C to +125°C

Description

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 asADS8900B,ADS127L01andDAC11001A, 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. 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 asADS8900B,ADS127L01andDAC11001A, 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.