GM3008

www.DataSheet4U.com Stand Alone Class B Hybrid GM3008 - HYB DATA SHEET FEATURES up to 80 dB of electrical gain dedicated preamp for a telecoil direct coupling of a telecoil to preamp low input referred noise on chip voltage regulator capable of driving low impedance receivers DESCRIPTION The GM3008 hybrid consists of two of Gennum's proprietary integrated circuits, the GP537 preamplifier and the GS551 class B output driver. Such a configuration provides up to 80 dB (typ) of electrical gain. Low total harmonic distortion and input noise make this circuit well suited for high power applications. Various additional pads have been provided to allow for maximum flexibility of system performance. The GP537 contains two low noise inverting preamplifiers with an open loop voltage gain of typically 50 dB, a telecoil preamplifier with its own reference voltage which enables for direct coupling of the telecoil and a voltage regulator with typically 74 dB of supply rejection capable of working with a supply voltage down to 1.1 volts. This chip also enables the user to disconnect the telecoil preamplifier when it is not required, thereby saving approximately 85 µA of current. The GS551 class B amplifier contains three basic blocks, a low noise inverting preamplifier, a unity gain phase splitter and a fixed gain class B output stage. STANDARD PACKAGING Hybrid typical dimensions 0.250 in x 0.150 in x 0.115 in (6.35 mm x 3.81 mm x 2.92 mm) 4 GM3008 GP537 GS551 6 VREG 11 ...