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ISD1612BSI Datasheet(PDF) 8 Page - Winbond |
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ISD1612BSI Datasheet(HTML) 8 Page - Winbond |
8 / 23 page ISD1600B SERIES - 8 - SOIC / PDIP PIN NAME PIN NO. FUNCTIONS VCCA 10 Analog power supply : It is important to have a separate path for each power back to the power terminal to minimize the noises. Decoupling capacitors to VSSA should be as close to the device as possible. VCCP 10 VCCP: Power supply for PWM speaker drivers. It is important to have a separate path for each power back to the power terminal to minimize noise. Decoupling capacitors to VSSP should be as close to the device as possible. SP+ 11 Speaker Positive : The SP+, Class D PWM output, provide a differential output with SP- pin to drive an 8Ω speaker or buzzer directly. During power down or recording, this pin is tri-stated. AGC 12 Automatic Gain Control : The AGC dynamically adjusts the gain of the preamplifier to compensate the wide range of microphone input levels. The AGC allows the full range of signal to be recorded with minimal distortion. Nominal values of 4.7 µF give satisfactory results in most cases. Connecting this pin to ground provides maximum gain to the preamplifier circuitry. Conversely, connecting this pin to power supply provides minimum gain to the preamplifier circuitry. AUD 13 AUD : The AUD provides a single-ended current output to drive an external amplifier. During standby or recording, this pin is tri-stated. ROSC 14 Oscillator Resistor : This enables the user to vary the record and/or playback duration of the device. A resistor connected between the ROSC pin and VSSA determines the sample frequency for the ISD1600B device. Please refer to the Duration Section in Section 6.1. VCCD 15 Digital power supply : It is important to have a separate path for each power back to the power terminal to minimize noise. Decoupling capacitors should be as close to the device as possible. LED 16 LED output : This pin is Low during a record cycle and blinks during playback cycle. It can be used to drive an LED to indicate either a record or playback cycle is in progress. Note: [1] 600kΩ (typical). |
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