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TLC320AD56CFN Datasheet(PDF) 28 Page - Texas Instruments |
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TLC320AD56CFN Datasheet(HTML) 28 Page - Texas Instruments |
28 / 42 page 4–2 4.3 Electrical Characteristics Over Recommended Operating Free-Air Temperature Range, DVDD = 5 V, AVDD = 5 V (Unless Otherwise Noted) 4.3.1 Digital Inputs and Outputs, MCLK = 4.096 MHz, fs = 8 kHz, Outputs Not Loaded PARAMETER TEST CONDITIONS MIN TYP MAX UNIT VOH High-level output voltage, DOUT IO = 360 µA 2.4 4.6 V VOL Low-level output voltage, DOUT IO = 2 mA 0.2 0.4 V IIH High-level input current, any digital input VIH = 5 V 10 µA IIL Low-level input current, any digital input VIL = 0.8 V 10 µA Ci Input capacitance 5 pF Co Output capacitance 5 pF 4.3.2 Digital Inputs and Outputs, MCLK = 4.096 MHz, fs = 8 kHz, Outputs Not Loaded, DVDD = 3 V PARAMETER TEST CONDITIONS MIN TYP MAX UNIT VOH High-level output voltage, DOUT IO = 360 µA 2 V VOL Low-level output voltage, DOUT IO = 2 mA 0.4 V IIH High-level input current, any digital input VIH = 3.3 V 10 µA IIL Low-level input current, any digital input VIL = 0.6 V 10 µA Ci Input capacitance 5 pF Co Output capacitance 5 pF 4.3.3 ADC Path Filter, MCLK = 4.096 MHz, fs = 8 kHz (see Note 4) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT 0 to 300 Hz – 0.5 0.2 300 Hz to 3 kHz – 0.35 0.2 Filter gain relative to gain at 1020 Hz 3.3 kHz – 0.4 0.3 dB Filter gain relative to gain at 1020 Hz 3.6 kHz – 3 dB 4 kHz – 40 ≥ 4.4 kHz – 74 NOTE 4: The filter gain outside of the passband is measured with respect to the gain at 1020 Hz. The analog input test signal is a sine wave with 0 dB = 6 VI(PP) as the reference level for the analog input signal. The –1 dB pass band is 0 to 3400 Hz for an 8-kHz sample rate. This pass band scales linearly with the sample rate. 4.3.4 ADC Dynamic Performance, MCLK = 4.096 MHz, fs = 8 kHz 4.3.4.1 ADC Signal-to-Noise (see Note 5) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT VI = – 1 dB 86 VI = – 3 dB 80 84 VI = – 6 dB 76 81 Signal-to-noise ratio (SNR) VI = – 9 dB 73 78 dB VI = – 40 dB 42 47 VI = – 65 dB 17 22 VAUX = – 9 dB 73 78 NOTE 5: The test condition is a 1020-Hz input signal with an 8-kHz conversion rate. Input and output voltages are referred to AVDD /2. |
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