INTEGRATED CIRCUITS
NE5517/NE5517A/AU5517 Dual operational transconductance amplifier
Product data Replaces NE5517/NE55...
INTEGRATED CIRCUITS
NE5517/NE5517A/AU5517 Dual operational transconductance amplifier
Product data Replaces NE5517/NE5517A dated 2001 Aug 03 2002 Dec 06
Philips Semiconductors
Philips Semiconductor
Product data
Dual operational transconductance amplifier
NE5517/NE5517A/ AU5517
DESCRIPTION
The AU5517 and NE5517 contain two current-controlled transconductance amplifiers, each with a differential input and push-pull output. The AU5517/NE5517 offers significant design and performance advantages over similar devices for all types of programmable gain applications. Circuit performance is enhanced through the use of linearizing diodes at the inputs which enable a 10 dB signal-to-noise improvement referenced to 0.5% THD. The AU5517/NE5517 is suited for a wide variety of industrial and consumer applications. Constant impedance buffers on the chip allow general use of the AU5517/NE5517. These buffers are made of Darlington
transistors and a biasing network that virtually eliminate the change of offset voltage due to a burst in the bias current IABC, hence eliminating the audible noise that could otherwise be heard in high quality audio applications.
PIN CONFIGURATION
N, D Packages
IABCa 1 Da 2 +INa 3 16 15 14 13 12 11 10 9 IABCb Db +INb –INb VOb V+ INBUFFERb VOBUFFERb
–INa 4 VOa 5 V– 6 INBUFFERa 7
VOBUFFERa 8
Top View
SL00306
Figure 1. Pin Configuration
FEATURES
Constant impedance buffers ∆VBE of buffer is constant with amplifier IBIAS change Excellent matching bet...