ADR4540BRZ-R7

The ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550 are high precision, low power, low noise voltage references with a maximum initial error of ±0.02%, excellent temperature stability, and low output noise. This family of voltage references employs an innovative core topology to achieve high accuracy while delivering industry-leading temperature stability and noise performance. The devices' low thermal hysteresis and low long-term output voltage drift further improve system accuracy over lifetime and temperature range. A maximum operating current of 950 μA and a maximum dropout voltage of 300 mV make these devices ideal for portable applications. The ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550 voltage references are available in 8-lead SOIC packages and offer a wide range of output voltages. All devices are rated over the −40°C to +125°C extended industrial temperature range. The ADR4525W is available in an 8-lead SOIC package and meets automotive application standards.

Applications

• Precision data acquisition systems
• High-resolution data converters
• High-accuracy measurement devices
• Industrial instrumentation
• Medical equipment
• Automotive battery monitoring

Key features

• Maximum temperature coefficient: 1 ppm/°C (Grade C, 0°C to +70°C), 2 ppm/°C (Grade B, −40°C to +125°C)
• Output noise (0.1 Hz to 70 Hz): 1 μVp-p (typical, at Vout = 2.048 V)
• Initial output voltage error: Grade B: ±0.02% (maximum)
• Input voltage range: 3 V to 15 V
• Operating temperature: Grade A and B: −40°C to +125°C; Grade C: 0°C to +70°C
• Output current: +10 mA source / −10 mA sink
• Low quiescent current: 950 μA (maximum)
• Low dropout: 300 mV (Vout ≥ 3 V)
• 8-pin SOIC package
• Automotive qualified
• Long-term drift: 51 ppm (typical) / 4500 hours