AD8228 Datasheet | Analog Devices

Low Gain Drift Precision Instrumentation Amplifier Features Easy to use Pin strappable gains of 10 and 100 Wide power supply range: ±2.3 V to ±18 V DC specifications (B Grade, G = 10) 2 ppm/°C gain drift 0.02% gain error 50 μV maximum input offset voltage 0.8 μV/°C maximum input offset drift 0.6 n A maximum input bias current 100 d B CMRR AC specifications 650 k Hz, - 3 d B bandwidth (G = 10) 2 V/μs slew rate Low noise 8 n V/√Hz, @ 1 k Hz (G = 100) 0.3 μV p-p from 0.1 Hz to 10 Hz (G = 100) APPLICATIONS Weigh scales Industrial process controls Bridge amplifiers Precision data acquisition systems Medical instrumentation Strain gages Transducer interfaces GENERAL DESCRIPTION The AD8228 is a high performance instrumentation amplifier with very high gain accuracy. Because all gain setting resistors are internal and laser trimmed, gain accuracy and gain drift are better than can be achieved with typical instrumentation amplifiers. Low voltage offset, low offset drift, low gain drift, high gain accuracy, and high CMRR make this part an excellent choice in applications that demand the best dc performance possible, such as bridge signal conditioning. CONNECTION DIAGRAM - IN 1 G1 2 G2 3 8 +VS 7 VOUT 6 REF +IN 4 AD8228 5 - VS TOP VIEW (Not to Scale) Figure 1. 07035-001 Table 1. Instrumentation Amplifiers by Category General Zero Purpose Drift Military Low Grade Power High Speed PGA AD82201 AD82311 AD620 AD6271 AD8250 AD8221 AD85531 AD621 AD6231 AD8251 AD8222 AD85551 AD524 AD8253 AD82241 AD85561 AD526 AD8228 AD85571 AD624 1 Rail-to-rail output. The AD8228 operates on both single and dual supplies. Because the part can operate on supplies up to ±18 V, it is well suited for applications where high mon-mode input voltages are encountered. The AD8228 is available in 8-lead MSOP and SOIC...