AD8655ARMZ

The AD8655/AD8656 are the lowest noise, precision CMOS amplifiers. They leverage the DigiTrim technology to achieve high dc accuracy. They provide low noise (2.7 nV/√Hz at 10 kHz), low THD+N (0.0007%), and high precision performance (250 μV max over VCM) to low voltage applications. The ability to swing rail-to-rail at the input and output enables designers to buffer analog-to-digital converters (ADCs) and other wide dynamic range devices in single-supply systems. The high precision performance improves the resolution and dynamic range in low voltage applications. Audio applications benefit from the low noise, low distortion, and high output current capability to reduce system level noise performance and maintain audio fidelity. The high precision and rail-to-rail input and output benefit data acquisition, process controls, and PLL filter applications. The AD8655/AD8656 are fully specified over the -40°C to +125°C temperature range. They are available in Pb-free, 8-lead MSOP and SOIC packages and are both available for automotive applications.

Applications

• ADC and DAC buffers
• Audio
• Industrial controls
• Precision filters
• Digital scales
• Automotive collision avoidance
• PLL filters

Key features

• Low noise: 2.7 nV/√Hz at f = 10 kHz
• Low offset voltage: 250 μV max over VCM
• Offset voltage drift: 0.4 μV/°C typ and 2 μV/°C max
• Bandwidth: 28 MHz
• Rail-to-rail input/output
• Unity gain stable
• 2.7 V to 5.5 V operation
• -40°C to +125°C operation
• Qualified for automotive applications