| Part Numbert | Mfg | Packt | D/C | Descriptiont | Qty | Company/Contact |
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PAL18H4AVM Datasheet DESCRIPTION Microsemi's IVS series of transient voltage suppjessurti redLure UAitjt: pctbsiVcikCI Lener type chips with full-faced metallurgical bonds on both sides to achieve high surge capability and negligible electrical degradation under repeaieo surge conamons. Tne serIes Is especially useful in protecting microprocessor, MOS, CMOS, 'rrL, ECL,I'L and linear integrated circuits from spurious transient disturbances. PAL18H4AVM Price High speed performance - 90 ns access time available CMOS Technology for low power consumption - 20 mA Active current - 100 yA Standby current Factory programming available Auto-insertion-compatible plastic packages Auto ID aids automated programming Separate chip enable and output enable controls High speed "express" programming algorithm Organized 32K x 8: JEDEC standard pinouts - 28-pin Dual-in-Iine package - 32-pin PLCC Package - 28-pin SOIC package - 28-pin Thin Small Outline Package (TSOP) - 28-pin Very Small Outline Package (VSOP) - Tape and reel Data Retention > 200 years * Available for the following temperature ranges: - Commercial: O'C to +70'C - Industrial: -40'C to +85'C - Automotive: 40'C to +125'C PAL18H4AVM on stock VS1003 is a single-chip MP3/WMA/MIDI audio decoder and ADPCM encoder. It contains a high- performance, proprietary low-power DSP proces- sor core VS_DSP4, working data memory, 5 KiB instruction RAM and 0.5 KiB data RAM for user applications, serial control and input data inter- faces, 4 general purpose I/O pins, an UART, as well as a high-quality variable-sample-rate mono ADC and stereo DAC, followed by an earphone amplifier and a ground buffer. The output of the input amplifier is fed through a low-pass filter to prevent aliasing at the switched capacitor 3.4 kHz low pass filter. The 3.4 kHz switched capacitor low pass filter prevents aliasing of input signals above 4 kHz, due to the sampling at 8 kHz. The output of the 3.4 kHz low pass filter is filtered by a high pass filter with a 200 Hz cut-o frequency. The filters are designed according to the recommendations in the G.712 ITU-T specification. From the output of the high pass filter the signal is digitized. The signal is converted into a compressed 8-bit digital representation with either ULaw or A- Law format. The ULaw or A-Law format is pin-selectable through the u/A-Law pin. The compression format can be selected according to Table 7.2. |
