AD8295ACPZ-WP

The AD8295 contains all the components necessary for a precision instrumentation amplifier front end in one small 4mm×4mm package. It contains a high performance instrumentation amplifier, two general-purpose operational amplifiers, and two precisely matched 20kΩ resistors. The AD8295 is designed to make PCB routing easy and efficient. The AD8295 components are arranged in a logical way so that typical application circuits have short routes and few vias. Unlike most chip scale packages, the AD8295 does not have an exposed metal pad on the back of the part, which frees additional space for routing and vias. The logical pin arrangement and routing freedom enable the AD8295 to offer simple pin-strapped solutions for complex systems in the equivalent board space of a typical MSOP package. The AD8295 includes a high performance, programmable gain instrumentation amplifier. Gain is set from 1 to 1000 with a single resistor. The low noise and excellent common-mode rejection of the AD8295 enable the part to easily detect small signals even in the presence of large common-mode interference. The AD8295 operates on both single and dual supplies and is well suited for applications where ±10V input voltages are encountered. Performance is specified over the entire industrial temperature range of - 40°C to +85°C for all grades. The AD8295 is operational from - 40°C to +125°C.

Applications

• Industrial process controls
• Wheatstone bridges
• Precision data acquisition systems
• Medical instrumentation
• Strain gages
• Transducer interfaces
• Differential output

Key features

• Saves board space
• Includes precision in-amp, 2 op amps, and 2 matched resistors
• 4 mm × 4 mm LFCSP
• No heat slug for more routing room
• Differential output fully specified
• Gain set with 1 external resistor (gain range: 1 to 1000)
• Input voltage noise: 8 mV/√Hz maximum at 1 kHz
• CMRR (G = 1): 90 dB minimum
• Input bias current: 0.8 nA maximum
• - 3 dB bandwidth (G = 1): 1.2 MHz
• Slew rate: 2 V/μs
• Wide power supply range: ±2.3 V to ±18 V
• 1 ppm/°C, 0.03% resistor matching