“This week we have a low power difference amplifier from Burr-Brown/TI: the INA132. The number of devices is relatively low so one could potentially think about drawing out a circuit diagram. It should be noted how much space is given to on-chip resistors and where the laser trimming has occurred for device matching.”
Source: http://microblog.routed.net/2007/08/10/ic-friday-tis-ina132/