 |
전자부품 데이터시트 검색엔진 |
|
|
전자부품 데이터시트 검색엔진 |
|
CS3310 데이터시트(PDF) 8 Page - Cirrus Logic |
|
||||||||||||||||||||||||||||||
CS3310 데이터시트(HTML) 8 Page - Cirrus Logic |
|
|
8 / 18 page  CS3310 8 DS82PP3 to prevent “clicks and pops” which occur with gain changes if an appreciable offset is present. Source Impedance Requirements The CS3310 requires a low source impedance to achieve maximum performance. The ESD protec- tion diodes on the analog input pins are reversed bi- ased during normal operation. A characteristic of a reversed biased diode is a non-linear voltage de- pendent capacitance which can be a source of dis- tortion if the source impedance becomes appreciable relative to the reversed biased diode capacitance. Source impedances equal to or less than 600 ohms will avoid this distortion mecha- nism for the CS3310. Mute Muting can be achieved by either hardware or soft- ware control. Hardware muting is accomplished via the MUTE input and software muting by load- ing all zeroes into the volume control register. MUTE disconnects the internal buffer amplifiers from the output pins and terminates AOUTL and AOUTR with 10 k Ω resistors to ground. The mute is activated with a zero crossing detection (inde- pendent of the zero cross enable status) or an 18 ms timeout to eliminate any audible “clicks” or “pops”. MUTE also initiates an internal offset cal- ibration. A software mute is implemented by loading all ze- roes into the volume control register. The internal amplifier is set to unity gain with the amplifier in- put connected to the maximum attenuation point of the resistive divider, AGND. A “soft mute” can be accomplished by sequentially ramping down from the current volume control set- ting to the maximum attenuation code of all zeroes. Power-Up Considerations Upon initial application of power, the MUTE pin of the CS3310 should be set low to initiate a power-up sequence. This sequence sets the serial shift regis- ter and the volume control register to zero and per- forms an offset calibration. The device should remain muted until the supply voltages have settled to ensure an accurate calibration. The device also includes an internal power-on reset circuit that re- quires approximately 100 µs to settle and will ig- nore any attempts to address the internal registers during this period. The offset calibration minimizes internally gener- ated offsets and ignores offsets applied to the AIN pins. External clocks are not required for calibra- tion. Although the device is tolerant to power supply variation, the device will enter a hardware mute state if the power supply voltage drops below ap- proximately ±3.5 volts. A power-up sequence will be initiated if the power supply voltage returns to greater than ±3.5 volts. Applying power to VD+ prior to VA+ creates a SCR latch-up condition. Refer to Figure 2 for the recommended power connections. PCB Layout, Grounding and Power Supply Decoupling As with any high performance device which con- tains both analog and digital circuitry, careful at- tention to power supply and grounding arrangements must be observed to optimize perfor- mance. Figure 2 shows the recommended power arrangements with VA+ connected to a clean +5 volt supply and VA- connected to a clean -5 volt supply. VD+ powers the digital interface circuitry and should be powered from VA+, as shown in Fig- ure 2, to avoid potentially destructive SCR latch- up. Decoupling capacitors should be located as near to the CS3310 as possible, see Figure 5. The printed circuit board layout should have sepa- rate analog and digital regions with individual ground planes. The CS3310 should reside in the an- alog region as shown in Figure 5. Care should be taken to ensure that there is minimal resistance in |
유사한 부품 번호 - CS3310 |
|
유사한 설명 - CS3310 |
|
|
|
링크 URL |
| 개인정보취급방침 |
| ALLDATASHEET.CO.KR |
| ALLDATASHEET 가 귀하에 도움이 되셨나요? [ DONATE ] |
Alldatasheet는? | 광고문의 | 운영자에게 연락하기 | 개인정보취급방침 | 링크교환 | 제조사별 검색 All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
Korean ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
