U2510B

 · Superior FM strong signal behavior by using RF AGC
 · Soft mute and HCC for decreasing interstation noise in FM mode
 · Excellent AFC performance (level controlled, both polarities available)
 · Level indicator (LED drive) for AM and FM
 · DC mode control: AM, FM and tape
 · Wide supply-voltage range and low quiescent current
 · High AF output power: 1 W
 · Electronic volume control
 · Electronic AF bandwidth control (treble and high cut)
 · Output stage for headphone and speaker drive

The U2510B is a bipolar monolithic IC for use in radio sets, for example, headphone receivers, radio recorders and clock radios. The IC contains all AM, FM, AF and switching function blocks necessary to construct these kinds of radio receivers using only few components around the IC. In the design, special efforts were made to get good performance for all AM bands (short and long wave).

The implementation of enhanced functions (options) makes it possible to improve the radio's performance and to produce radios with interesting features. In this case few (external) parts have to be changed or added. By using all or some of the options offered by the U2510B different types or classes of radios can be designed to the customer's requirements with the same IC.

One of the general advantages of using the U2510B is the fact that all receiver functions (including the options) are integrated and tested on a system level. Therefore, two additional cost-savings are achieved by:

1. Shorter development time through less technical problems and

2. Higher reproductivity and low reject level in the set production line.

Another advantage, due to the technology of the U2510B, is the wide operating voltage range, especially the upper limit (13 V). This feature allows the use of soft power supply for line powered radios which can also reduce the set's total cost.

The U2510B is an integrated bipolar one-chip AM/FM radio circuit. It contains an FM front end with preamplifier, FM IF and demodulator, a complete AM receiver, an AF amplifier and a mode switch for AM, FM and tape. This circuit is designed for clock radios and portable radio-cassette recorders.