M51137FP

The M51137FP is a kind of Bi-CMOS IC for audio-visual systems. It is suitable for multiamplifiers, being used for processing small analog signals in the stage before power amplifer. The device uses 8-bit serial data transmitted from a microcomputer in order to perform sound control such as master volume control (VCA system), tone control (bass, mid, and treble), and bass boosting. It is also used as a single output and car audio systems.

There are some features as follows: (1)built-in VCA circuit for main volume control; (2)variable volume range: -96 dB to +9 dB; (3)capability of controlling VCA from external source; (4)built-in bass booster enhances heavy bass; (5)tone control: -10 dB to +16 dB (2 dB/step) for treble, -10 dB to +10 dB (2 dB/step) for mid, -10 dB to +16 dB (2 dB/step) for bass and -10 dB to +10 dB (2 dB/step) for bass boost; (6)for controlling in each mode, the IC uses built-in microcomputer interface and serial data that regulates volume (8-bit), treble, mid, bass, and bass boost (4-bit).

The following is about the absolute maximum ratings: (1)VCC, supply voltage: 14 V; (2)VI, digital input voltage: -0.3 to 7.0 V; (3)Pd, power dissipation: 1000 mW; (4)K, thermal derating (Ta25): 10 mW/; (5)Topr, operating temperature: -10 to +70; (6)Tstg, storage temperature: -40 to +125.