ADR34xx: Micropower, 10ppm/°C CMOS Voltage Reference
With ADR3430 and ADR3440 Analog Devices added two new members to its family of micro power references. The ADR3425/ADR3430/ADR3440/ADR3450 are low cost, low power, high precision CMOS voltage references, featuring ±0.1% initial accuracy, low operating current, and low output noise in a small SOT-23 package.
For high accuracy, output voltage and temperature coefficient are trimmed digitally during final assembly using Analog Devices, Inc., patented DigiTrim® technology. Stability and system reliability are further improved by the low output voltage hysteresis of the device and low long-term output voltage drift.
Furthermore, the low operating current of the device (100 μA maximum) facilitates usage in low power devices, and its low output noise helps maintain signal integrity in critical signal processing systems. The ADR3425/ADR3430/ADR3440/ADR3450 are available in a wide range of output voltages, all of which are specified over the industrial temperature range of −40°C to +125°C.
Features
Low Power:
- Quiescent current: 70 µA typ.
- Input voltage range: 2.3...5.5 V
- Low-dropout: 300 mV for +2 mA at +125 °C
- Output drive: +10 mA source, 3 mA sink
High accuracy:
- Initial Accuracy ±0.10%
- Voltage Drift: 10 ppm/°C, max
- Long Term Drift: <50 ppm/1,000 hours
Excellent Noise Performance:
- Low-frequency noise: <10 μVpp (0.1...10 Hz)
- Wideband noise: <30 µVrms (10...10 kHz)
Wide Temperature Range: -40...+125 °C operation
Applications
- Process control
- Power line monitoring
- Instrumentation
- Photodiode
- Solar panels
- Energy generation
- Precision medical instruments
- Patient monitoring
- Imaging products
- Communication infrastructure
- Automotive with its AEC-Q100 specs
