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GA3227 Datasheet(PDF) 5 Page - ON Semiconductor |
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GA3227 Datasheet(HTML) 5 Page - ON Semiconductor |
5 / 13 page CONSOLIDATOR GA3227 www.onsemi.com 5 Table 3. ELECTRICAL CHARACTERISTICS − PART 2 Parameter Accuracy Units Max Min WIDEBAND SYSTEM GAIN Wideband System Gain −36 12 dB Type 3 Wideband Attack Time Constant (Fast & Slow) 0.25 8192 ms Type 1, 3 Wideband Release Time Constant (Fast & Slow) 0.25 8192 ms Type 1, 3 External VC −48 0 dB Type 3 Internal VC Attenuator −48 0 dB Type 3 TOTAL SYSTEM GAIN Total System Gain −19 83 dB (Note 1) AGCo AGCo Output Limiting −30 −1 dBFS* Type 3 AGCo Compression Ratio ∞ : 1 ∞ : 1 Ratio N/A PEAK CLIPPER PC Output Limiting −40 0 dBFS Type 3 TONE GENERATOR Pure Tone Frequency (memory and low battery indicator) 0.25 12 kHz Type 1, 2 Pure Tone Amplitude (memory and low battery indicator) −50 0 dBFS Type 3 Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product performance may not be indicated by the Electrical Characteristics if operated under different conditions. 1. Total System Gain consists of: Wideband System Gain + High and Low Independent Channel Gains + Converter Gain and accuracy of this parameter is dependent on accuracy of the components. *Peak output is defined as largest sine wave possible at the resonant frequency of the receiver. NOTE: Type 1: Accuracy is determined by the clock frequency deviation Type 2: Accuracy is determined by the quantization error of 16 bit coefficient and 20 bit or higher data word Type 3: Accuracy is determined by the quantization error of a parameter word (see Table 2 for word length) and 20 bit or higher data word TYPICAL APPLICATIONS Figure 2. Test Circuit Note: All resistors in ohms and all capacitors in farads, unless otherwise stated. MGND IN T VREG SDA MS MS2 TR4 TR3 TR2 TR1 VC VREG2 3k9 1k LP FILTER OUT VB A/D SQUELCH SQUELCH HP LP TRIMMER INTERFACE FILTER COMPRESSOR COMPRESSOR PROGRAMMING INTERFACE EEPROM REGULATOR TWIN DETECTOR D/A HBRIDGE GA3227 VC GAIN AGC−O TWIN DETECTOR T−coil EQ 1st or 2nd ORDER 1st to 3rd ORDER LC HC TWIN DETECTOR TWIN DETECTOR S 19 12 11 10 18 20 2 16 15 17 6 9 8 7 5 14 13 3 4 BAND SPLIT 24 db/oct TONE GENERATOR PEAK CLIPPING Bi−Quadratic Filter 1 |
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