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AK4687 Datasheet(PDF) 6 Page - Asahi Kasei Microsystems |
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AK4687 Datasheet(HTML) 6 Page - Asahi Kasei Microsystems |
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6 / 36 page  [AK4687] MS1307-E-00 2011/05 - 6 - ANALOG CHARACTERISTICS (Ta=25 °C; AVDD1=AVDD2 = DVDD= 3.3V; VSS1=VSS2=VSS3 =VSS4 =VSS5 =0V; fs=48kHz; BICK=64fs; Signal Frequency=1kHz; 24bit Data; Measurement Frequency = 20Hz ∼ 20kHz at fs=48kHz, 20Hz~40kHz at fs=96kHz; 20Hz~40kHz at fs=192kHz, all blocks are synchronized, unless otherwise specified) Parameter min typ max Units Pre-Amp Characteristics: Feedback Resistance Rf 12 39 92 k Ω Input Resistance Ri 18 47 92 k Ω Output Level LO / RO pins (ADC=0dBFs) (Note 3) 1.82 1.91 2.00 Vrms Load Resistance RL (Note 4) 18 k Ω Load Capacitance CL (Note 4) 20 pF Analog Input (LIN1-3, RIN1-3pin) to ADC Analog Input Characteristics Resolution 24 Bits S/(N+D) (-1dBFS) fs=48kHz - 83 dB DR (-60dBFS) fs=48kHz, A-weighted - 99 dB S/N (input off) fs=48kHz, A-weighted - 99 dB Interchannel Isolation (Note 5) - 100 dB Interchannel Gain Mismatch 0 - dB Gain Drift 50 - ppm/ °C Power Supply Rejection (Note 6) 50 dB DAC to Analog Output (LOUT, ROUT pin) Characteristics Resolution 24 Bits S/(N+D) (0dBFS) fs=48kHz fs=96kHz fs=192kHz - - - 95 93 93 dB dB dB DR (-60dBFS) fs=48kHz, A-weighted fs=96kHz, A-weighted fs=192kHz, A-weighted - - - 105 105 105 dB dB dB S/N (“0” data) fs=48kHz, A-weighted fs=96kHz, A-weighted fs=192kHz, A-weighted - - - 105 105 105 dB dB dB Interchannel Isolation - 100 dB Interchannel Gain Mismatch 0 - dB DC Offset (at output pin) –5 0 +5 mV Gain Drift 50 - ppm/ °C Output Voltage LOUT/ROUT= 2 x AVDD2/3.3 1.85 2 2.15 Vrms Load Resistance 5 k Ω Load Capacitance (C1) 30 pF Power Supply Rejection (Note 6) 62 dB Note 3. Input range for ADC full scale when the external input resistance is 47k Ω, feedback resistance is 39kΩ and input signal is 2.3Vrms. Note 4. RL or CL of Figure 2. Load resistance and capacitance when the output signal of the LO/RO pin is used for an external device. Note 5. This value is the channel isolation for all other channels between LIN1-3 and RIN1-3. Note 6. PSR is applied to AVDD1, AVDD2 and DVDD with 1kHz, 50mVpp. |
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