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PCM1795DB 数据表(PDF) 4 Page - Texas Instruments |
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PCM1795DB 数据表(HTML) 4 Page - Texas Instruments |
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4 / 58 page  PCM1795 SLES248 – MAY 2009 ........................................................................................................................................................................................................ www.ti.com ELECTRICAL CHARACTERISTICS (continued) All specifications at TA = +25°C, VCC1 = VCC2L = VCC2R = 5 V, VDD = 3.3 V, fS = 48 kHz, system clock = 256 fS, and 32-bit data, unless otherwise noted. PCM1795 DB PARAMETER TEST CONDITIONS MIN TYP MAX UNIT DYNAMIC PERFORMANCE (MONO MODE)(3)(4)(5) fS = 48 kHz 0.0005 % THD+N at VOUT = 0 dB fS = 96 kHz 0.001 % fS = 192 kHz 0.0015 % EIAJ, A-weighted, fS = 48 kHz 126 dB Dynamic range EIAJ, A-weighted, fS = 96 kHz 126 dB EIAJ, A-weighted, fS = 192 kHz 126 dB EIAJ, A-weighted, fS = 48 kHz 126 dB Signal-to-noise ratio EIAJ, A-weighted, fS = 96 kHz 126 dB EIAJ, A-weighted, fS = 192 kHz 126 dB DSD MODE DYNAMIC PERFORMANCE (44.1 kHz, 64 fS) (3) (6) THD+N at FS 2 V rms 0.0007 % Dynamic range –60 dB, EIAJ, A-weighted 122 dB Signal-to-noise ratio EIAJ, A-weighted 122 dB ANALOG OUTPUT Gain error –7 ±2 7 % of FSR Gain mismatch, channel-to-channel –3 ±0.5 3 % of FSR Bipolar zero error At BPZ –2 ±0.5 2 % of FSR Output current Full-scale (0 dB) 4 mAPP Center current At BPZ –3.5 mA DIGITAL FILTER PERFORMANCE De-emphasis error ±0.1 dB FILTER CHARACTERISTICS–1: SHARP ROLL-OFF ±0.0002 dB 0.454 fS Passband –3 dB 0.49 fS Stop band 0.546 fS Passband ripple ±0.0002 dB Stop-band attenuation Stop band = 0.546 fS –98 dB Delay time 38/fS s FILTER CHARACTERISTICS–2: SLOW ROLL-OFF ±0.001 dB 0.21 fS Passband –3 dB 0.448 fS Stop band 0.79 fS Passband ripple ±0.001 dB Stop-band attenuation Stop band = 0.732 fS –80 dB Delay time 38/fS s (3) Filter condition: THD+N: 20-Hz high-pass filter (HPF), 20-kHz AES17 low-pass filter (LPF) Dynamic range: 20-Hz HPF, 20-kHz AES17 LPF, A-weighted Signal-to-noise ratio: 20-Hz HPF, 20-kHz AES17 LPF, A-weighted Channel separation: 20-Hz HPF, 20-kHz AES17 LPF Analog performance specifications are measured using the System Two™ Cascade audio measurement system by Audio Precision™ in the averaging mode. (4) Dynamic performance and dc accuracy are specified at the output of the post-amplifier as shown in Figure 52. (5) Dynamic performance and dc accuracy are specified at the output of the measurement circuit as shown in Figure 54. (6) Dynamic performance and dc accuracy are specified at the output of the post-amplifier as shown in Figure 53. 4 Submit Documentation Feedback Copyright © 2009, Texas Instruments Incorporated Product Folder Link(s): PCM1795 |
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