LV1100

Ordering number : EN5506 Bi-CMOS LSI LV1100 Digital Surround Audio Signal-Processing IC Overview The LV1100 is an audio signal-processing Bi-CMOS LSI that integrates input and output filters, a delay line (builtin memory), and a delay/reverb function with a maximum delay of 120 ms on a single chip. It also provides built-in fixed matrix (L+R, L–R) and front mixing (with level and phase switching) functions. A full complement of surround modes can be easily implemented by combining these functions. Package Dimensions unit: mm 3067-DIP24S [LV1100] Functions and Features Input switching (L+R, L–R, IN–A) On-chip memory (12K SRAM) Front adder (+3 dB, 0 dB, –3 dB, -∞) Input and output filters Input filter –7 kHz low-pass filter Output filter –5 kHz low-pass filter: switchable with a 3 kHz low-pass filter On-chip VDD circuit Input and output muting function A simulated surround system can be easily implemented with only one chip. ADM A/D and D/A converters Variable delay times – Short mode; Maximum delay: 60 ms. Delay time selectable from six delay times in 10-ms steps. – Long mode; Maximum delay: 120 ms. Delay time selectable from six delay times in 20-ms steps. SANYO: DIP24S Specifications Absolute Maximum Ratings at Ta = 25°C Parameter Maximum supply voltage Allowable power dissipation Operating temperature Storage temperature Symbol VCC max Pd max Topr Tstg Ta ≤ 70°C Conditions Ratings 12 420 –25 to +70 –40 to +125 Unit V mW °C °C Allowable Operatin...