Texas Instruments REF54 Precision Voltage References
Texas Instruments REF54 Precision Voltage References are high precision, low-drift, and low current consumption series voltage references. These references offer a low-temperature drift coefficient (0.8ppm/°C), low noise (0.11ppmp-p), and high accuracy (±0.02%) while consuming 260µA current. The REF54 references with low long-term drift (25ppm), excellent load, and line regulation help meet the strict performance requirements of high-precision applications. These references are designed as a companion device for high-resolution data converters such as ADS8900B, ADS127L11, ADS1285, and DAC11001B. The REF54 voltage references are used in ultrasound scanners, field transmitters, power monitoring, X-ray systems, precision weight scales, and PLC analog I/O modules.
The REF54 references support a wide supply voltage rating of 18V. This rating also protects the device in case of power supply IC failure. The REF54 device supports up to 10mA load current. The wide load current support allows for directly connecting REF54 as a power supply to precision sensors. The REF54 is specified for the two temperature ranges: C grade is set for 0°C to 70°C and Q grade is established for -40°C to +125°C. The wide temperature range enables operation across various industrial applications.
Features
- Low-temperature drift coefficient
- 0.8ppm/°C maximum (C grade, 0°C to 70°C)
- 1.5ppm/°C maximum (Q grade, -40°C to 125°C)
- Low noise (0.1Hz to 10Hz)
- 0.11ppmp-p with CNR = 100µF
- 0.45ppmp-p with CNR = Open
- ±0.02% maximum high accuracy
- Designed for a wide range of applications
- Wide input voltage up to 18V
- Output current of ±10mA
- Voltage options of 2.5V, 3V, 4.096V, 4.5V, 5V
- 380µA maximum low quiescent current
- Low long-term stability (1k hr) of 25ppm
- Fit for all design requirements
- Stable with 1µF to 100µF output low-ESR capacitor
- High PSRR of 100dB at 1kHz
- Operating temperature range of −40°C to +125°C
- Pin-to-pin to REF50xx family when TEMP pin is not used
Applications
- Semiconductor test equipment
- Precision data acquisition systems
- Precision weight scales
- Ultrasound scanners
- X-ray systems
- Industrial instrumentation
- PLC analog I/O modules
- Field transmitters
- Power monitoring
- Battery management systems
Functional Block Diagram
Related Development Tool
Texas Instruments REF54EVM Evaluation Module
Demonstrates the performance of a REF54 high-precision reference device.
Publicerad: 2024-02-12
| Uppdaterad: 2024-07-24