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PCD6003 Datasheet(PDF) 79 Page - NXP Semiconductors |
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PCD6003 Datasheet(HTML) 79 Page - NXP Semiconductors |
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79 / 96 page  2001 Apr 17 79 Philips Semiconductors Product specification Digital telephone answering machine chip PCD6003 17.4 Analog supplies and general purpose ADC and DAC Notes 1. VBGP output current is zero. Decoupling capacitance between VBGP and VSSA is 100 nF. 2. The VREF output current is zero however the VREF output buffer is loaded via VMIC (see note 3). Decoupling capacitance between VREF and VSSA is between 1 and 100 µF, with a 100 nF capacitance in parallel. The output can only source current (i.e. not sink). 3. Pin VMIC is connected to VREF via an internal switch. The VMIC switch is closed by setting SYMOD.4 = 1. The VMIC DC output current is max. 400 µA, and VREF must be programmed to its typical value. For the connections of VMIC to a microphone (see Fig.36). VMIC adjustment can only be done by adjusting VREF. 4. Output resistances represent the theoretical maximum which can be guaranteed by design. Actual output resistance values can vary depending on several conditions as processing, temperature and drive signal shape. SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT VBGP AVR bandgap voltage note 1 1.15 1.23 1.30 V VREF(RESET) reference voltage, after reset note 2 1.9 2.0 2.1 V VREF(TUNED) reference voltage when tuned via VREFR − 30 − mV dVMIC VREF − VMIC note 3 − 40 − mV VADIN,OFS ADIN1 and ADIN2 input offset voltage − 20 50 mV VADIN1,2 ADIN1 and ADIN2 input voltage range 0 − VREF mV RADIN1,2 ADIN1 and ADIN2 input resistance 210 − M Ω RDAOUT DAOUT output resistance note 4 − 7 − k Ω VDAOUT DAOUT output voltage range 8 − VREF mV |
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