REF3440IDBVR

The REF34xx devices are low-drift (6ppm/°C), low-power, high-precision CMOS voltage references featuring ±0.05% initial accuracy, low operating current, and power consumption below 95μA. The devices also provide ultralow output noise of 3.8μVp-p/V, enabling high signal integrity when used with high-resolution data converters in noise-sensitive systems. The REF34xx is available in a compact SOT-23 package with superior specifications and offers pin-to-pin replacements for MAX607x, ADR34xx, and LT1790 (REF34xxT, without EN pin). The REF34xx family is compatible with most ADCs and DACs, such as the ADS1287, DAC8802, and ADS1112. The device's low output voltage hysteresis and low long-term output voltage drift further enhance stability and system reliability. In addition, the small form factor and low operating current (95μA) make it well suited for portable and battery-powered applications. The REF34xx is rated over a wide temperature range of -40°C to +125°C.

Applications

• Data Acquisition Systems
• Analog I/O Modules
• Field Transmitters
• Laboratory and Field Instruments
• Servo Drive Control Modules
• DC Power Supplies, AC Power Supplies, Electronic Loads

Key features

• Initial accuracy: ±0.05% (maximum)
• Temperature coefficient: 6ppm/°C (maximum)
• Operating temperature range: -40°C to +125°C
• Output current: ±10mA
• Low quiescent current: 95μA (maximum)
• Ultra-low zero-load dropout voltage: 100mV (maximum)
• Wide input voltage: 12V
• Output 1/f noise (0.1Hz to 10Hz): 3.8μVPPN
• Excellent long-term stability (25ppm/1000 hours)
• Multiple compact 6-pin SOT-23 package pinouts