Philips Tda1074a Dual Tandem Electronic Potentiometer Is Nos 90er 10 Stck

EUR 54.00

Hamburg, Germany
Jul 30th

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10x IC Philips TDA 1074A New Old Stock aus den 90er Jahren 18 Pin DIL Grere Stckzahlen (bis ca. 2500 Stck) mglich! Bitte einfach anfragen.... Description The TDA1074A is a monolithic integrated circuit designed for use as volume and tone control circuit in stereo amplifiers. This dual tandem potentiometer IC consists of two ganged pairs of electronic potentiometers with the eight inputs connected via impedance converters, and the four outputs driving individual operational amplifiers. The setting of each electronic potentiometer pair is controlled by an individual d.c. control voltage. The potentiometers operate by current division between the arms of cross-coupled long-tailed pairs. The current division factor is determined by the level and polarity of the d.c. control voltage with respect to an externally available reference level of half the supply voltage. Since the electronic potentiometers are adjusted by a d.c. control voltage, each pair can be controlled by single linear potentiometers which can be located in any position dictated by the equipment styling. Since the input feedback impedances around the operational amplifier gain blocks are external, the TDA1074A can perform bass/treble and volume/loudness control. It also can be used as a low-level fader to control the sound distribution between the front and rear loudspeakers in car radio installations. Features: • High impedance inputs to both ‘ends’ of each electronic potentiometer • Ganged potentiometers track within 0,5 dB • Electronic rejection of supply ripple • Internally generated reference level available externally so that the control voltage can be made to swing positively and negatively around a well-defined 0 V level • The operational amplifiers have push-pull outputs for wide voltage swing and low current consumption • The operational amplifier outputs are current limited to provide output short-circuit protection • Although designed to operate from a 20 V supply (giving a maximum input and output signal level of 6 V), the TDA1074A can work from a supply as low as 7,5 V with reduced input and output signal levels. The listing header photograph shows the actual parts for sale, as they come in their original packaging. You will receive a cut length of tube containing the quantity ordered. These are genuine Philips parts, date coded in the 90's (9105) although in perfect condition, due to their age we have classified them as "new other" Datasheet copy and paste http://www.bucek.name/pdf/tda1074.pdf Dies ist ein privater Verkauf! Keine Garantie, Umtausch oder Rcknahme Unversicherter Versand OHNE TRACKING Versicherter Versand optional nach Ansprache

Condition:	New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is applicable). Packaging should be the same as what is found in a retail store, unless the item was packaged by the manufacturer in non-retail packaging, such as an unprinted box or plastic bag. See the seller's listing for full details. ...	Marke	Philips
Anzahl der Pins	18