The ADA4500-2ARMZ-RL is a dual 10 MHz, 14.5 nV/√Hz, low poweramplifier featuring rail-to-rail input and output swings whileoperating from a 2.7 V to 5.5 V single power supply. Compatible with industry-standard nominal voltages of +3.0 V, +3.3 V, +5.0 V, and ±2.5 V.
Employing a novel zero-crossover distortion circuit topology, this amplifier offers high linearity over the full, rail-to-rail inputcommon-mode range, with excellent power supply rejection ratio(PSRR) and common-mode rejection ratio (CMRR) performancewithout the crossover distortion seen with the traditional complementary rail-to-rail input stage. The resulting op ampalso has excellent precision, wide bandwidth, and very lowbias current.
This combination of features makes the ADA4500-2ARMZ-RL an ideal choice for precision sensor applications because it minimizes errors due to power supply variation and maintains high CMRR over the full input voltage range. The ADA4500-2ARMZ-RL is also an excellent amplifierfor driving analog-to-digital converters (ADCs) because the outputdoes not distort with the common-mode voltage, which enables the ADC to use its full input voltage range, maximizing the dynamic range of the conversion subsystem.
Many applications such as sensors, handheld instrumentation,precision signal conditioning, and patient monitors can benefitfrom the features of the ADA4500-2.
The ADA4500-2ARMZ-RL is specified for the extended industrial temperaturerange (−40°C to +125°C) and available in the standard 8-leadMSOP and 8-lead LFCSP packages.
Feature
- Power supply rejection ratio (PSRR): 98 dB minimum
- Common-mode rejection ratio (CMRR): 95 dB minimum
- Offset voltage: 120 μV maximum
- Single-supply operation: 2.7 V to 5.5 V
- Dual-supply operation: ±1.35 V to ±2.75 V
- Wide bandwidth: 10 MHz
- Rail-to-rail input and output
- Low noise
- 2 μV p-p from 0.1 Hz to 10 Hz
- 14.5 nV/√Hz at 1 kHz
- Very low input bias current: 2 pA maximum
Applications
- Pressure and position sensors
- Remote security
- Medical monitors
- Process controls
- Hazard detectors
- Photodiode applications
(Picture: Pinout)
