THAT1206

FEATURES High CMRR: typ. 90 dB at 60 Hz Extremely high common-mode input impedance Maintains balance under real-world conditions Transformer-like performance in an IC Excellent audio performance Wide bandwidth: typ. > 22 MHz High slew rate: typ. 12 V/us Low distortion: typ. 0.0005 % THD Low noise: typ. -106 dBu Several gains: 0 dB, -3 dB, & -6 dB InGenius High-CMRR Balanced Input Line Receiver ICs THAT 1200, 1203, 1206 APPLICATIONS Balanced Audio Line Receivers Instrumentation Amplifiers Differential Amplifiers Transformer Front-End Replacements ADC Front-Ends Description The THAT 1200-series InGenius balanced line receivers overcome a serious limitation of conventional balanced input stages: poor common mode rejection in real-world applications. While conventional input stages measure well in the lab and perform well on paper, they fail to live up to their CMRR specs when fed from even slightly unbalanced source impedances — a common situation in almost any pro sound environment. This is because conventional stages have low common-mode input impedance, which interacts with imbalances in source impedance to unbalance common-mode signals, making them indistinguishable from desired, balanced signals. Developed by Bill Whitlock of Jensen Transformers, the patented InGenius input stage uses clever bootstrapping to raise its common-mode input impedance into the megohm range without the noise penalty from the obvious solution of using high-valued r...