The ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ ADR4550 devices are high precision, low power, low noise voltage references featuring ±0.02% maximum initial error, excellent temperature stability, and low output noise. This family of voltage references uses an innovative core topology to achieve high accuracy while offering industry-leading temperature stability and noise performance. The low, thermally induced output voltage hysteresis and low long-term output voltage drift of the devices also improve system accuracy over time and temperature variations. A maximum operating current of 950 μA and a maximum low dropout voltage of 300 mV allow the devices to function very well in portable equipment.

The ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ ADR4550 series of references are each provided in an 8-lead SOIC package and are available in a wide range of output voltages, all of which are specified over the extended industrial temperature range of −40°C to +125°C. The ADR4525W, available in an 8-lead SOIC package, is qualified for automotive applications.
 

• Maximum temperature coefficient (TCVOUT):
• 1 ppm/°C (C grade 0°C to +70°C)
• 2 ppm/°C (B grade −40°C to +125°C)
• Output noise (0.1 Hz to 10 Hz):
• 1 μV p-p at VOUT of 2.048 V typical
• Initial output voltage error:
• B grade: ±0.02% (maximum)
• Input voltage range: 3 V to 15V
• Operating temperature:
• A grade and B grade: −40°C to +125°C
• C grade: 0°C to +70°C
• Output current: +10 mA source/−10 mA sink
• Low quiescent current: 950 μA (maximum)
• Low dropout voltage: 300 mV at 2 mA (VOUT ≥ 3 V)
• 8-lead SOIC package
• Qualified for automotive applications
• Long-term drift: 51 ppm typical at 4500 hours