AD8655

Data Sheet 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 2.3 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 APPLICATIONS ADC and DAC buffers Audio Industrial controls Precision filters Digital scales Automotive collision avoidance PLL filters GENERAL DESCRIPTION The AD8655/AD8656 are the industry’s lowest noise, precision CMOS amplifiers. They leverage the Analog Devices DigiTrim® technology to achieve high dc accuracy. The AD8655/AD8656 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. Low Noise, Precision CMOS Amplifier AD8655/AD8656 05304-048 05304-059 PIN CONFIGURATIONS NC 1 –IN 2 +IN 3 V– 4 AD8655 TOP VIEW (Not to Scale) 8 NC 7 V+ 6 OUT 5 NC NC = NO CONNECT Figure 1. AD8655 8-Lead MSOP (RM-8) 8-Lead SOIC (R-8) OUT A 1 –IN A 2 +IN A 3 V– 4 AD8656 TOP VIEW (Not to Scale) 8 V+ 7 OUT B 6 –IN B 5 +IN B Figure 2. AD8656 8-Lead MSOP (RM-8) 8-Lead SOIC (R-8) The high precision performance of the AD8655/AD8656 improves the resolution and dynamic range in low voltage applications. Audio applications, s...