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PCM1802 数据表(PDF) 4 Page - Texas Instruments |
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PCM1802 数据表(HTML) 4 Page - Texas Instruments |
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4 / 24 page ![]() PCM1802 SLES023B – DECEMBER 2001 – REVISED MARCH 2002 4 www.ti.com electrical characteristics, all specifications at TA = 25°C, VCC = 5 V, VDD = 3.3 V, master mode, fS = 44.1 kHz, system clock = 384 fS, over sampling ratio = ×128, 24-bit data (unless otherwise noted) TEST CONDITIONS PCM1802DB UNIT TEST CONDITIONS MIN TYP MAX UNIT Resolution 24 bits DATA FORMAT Audio data interface format Left justified, I2S, right justified Audio data bit length 20, 24 bits Audio data format MSB first, 2s complement fS Sampling frequency 16 44.1 96 kHz 256 fS 4.096 11.2896 24.576 System clock frequency 384 fS 6.144 16.9344 36.864 MHz System clock frequency 512 fS 8.192 22.5792 49.152 MHz 768 fS 12.288 33.8688 INPUT LOGIC VIH See Note 1 2 VDD VIL See Note 1 Input logic level 0 0.8 VDC VIH See Note 2 Input logic level 2 5.5 VDC VIL See Note 2 0 0.8 IIH See Note 3 VIN = VDD ±10 IIL See Note 3 Input logic current VIN = 0 V ±10 A IIH See Note 4 Input logic current VIN = VDD 65 100 µA IIL See Note 4 VIN = 0 V ±10 OUTPUT LOGIC VOH See Note 5 Output logic level IOUT = –1 mA 2.8 VDC VOL See Note 5 Output logic level IOUT = 1 mA 0.5 VDC DC ACCURACY Gain mismatch channel-to-channel ±1 ±4 %FSR Gain error ±2 ±6 %FSR Bipolar zero error LCF bypass (see Note 6) ±2 %FSR NOTES: 1. Pins 9–11: FSYNC, LRCK, BCK (Schmitt-trigger input, in slave mode) 2. Pins 7–8, 15–20: PDWN, BYPAS, SCKI, OSR, FMT0, FMT1, MODE0, MODE1 (Schmitt-trigger input, 5-V tolerant). 3. Pins 9–11, 15: FSYNC, LRCK, BCK (Schmitt-trigger input in slave mode), SCKI (Schmitt-trigger input). 4. Pins 7–8, 16–20: PDWN, BYPAS, OSR, FMT0, FMT1, MODE0, MODE1 (Schmitt-trigger input, with 50-k Ω typical pulldown resistor). 5. Pins 9–12: FSYNC, LRCK, BCK (in master mode), DOUT 6. Low cut filter |
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