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부품번호 | BU2614 기능 |
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기능 | PLL frequency synthesizer for tuners | ||
제조업체 | ROHM Semiconductor | ||
로고 | |||
전체 9 페이지수
Audio ICs
PLL frequency synthesizer for tuners
BU2614 / BU2614FS
The BU2614 PLL frequency synthesizers work up through the FM band. Featuring low radiation noise, low power dis-
sipation, and highly sensitive built-in RF amps, they support an IF count function.
FApplications
Tuners (Mini components, radio cassette players, radio
equipment, etc.)
FFeatures
1) Built-in high-speed prescaler can divide 130MHzVCO.
2) Reference oscillation of 75kHz keeps unnecessary
radiation noise to a low level.
3) Low current dissipation (during operation: 4mA, PLL
OFF 100µA).
4) In addition to the standard FM and AM, also offers the
following 7 frequencies: 25kHz, 12.5kHz, 6.25kHz,
3.125kHz, 5kHz, 3kHz, and 1kHz.
5) Counter for measurement of intermediate frequen-
cies.
6) Unlock detection.
7) Three output ports (open drain).
The BU2615, with seven output ports, is also avail-
able.
8) Serial data input (CE, CK, DA).
FAbsolute maximum ratings (Ta = 25_C)
FRecommended operating conditions (Ta = 25_C)
116
Audio ICs
BU2614 / BU2614FS
FElectrical characteristics (unless otherwise noted, Ta = 25_C, VDD1 = VDD2 = 5.0V)
119
4페이지 Audio ICs
FFrequency counter
(1) Structure
BU2614 / BU2614FS
(2) How the frequency counter operates
When control data CT equals 1, the 20-bit counter and
the amp go into operation. When CT equals 0, input pull-
down and the counter are reset. Measuring time (gate
pulse) is selected (16ms / 32ms) on the basis of control
data GT. When control data CT equals 0, the counter is
reset.
(3) Explanation of output data
D0: LSB D19: MSB
How the unlock detection circuit operates
When control data GT equals 1, or CT equals 1, the un-
lock detection circuit goes into operation for 8ms. When
CT equals 1, the unlock detection circuits stops operating
before the frequency counter gate pulse is emitted.
When CT equals 0, or GT equals 0, the unlock detection
circuit is reset.
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구 성 | 총 9 페이지수 | ||
다운로드 | [ BU2614.PDF 데이터시트 ] |
당사 플랫폼은 키워드, 제품 이름 또는 부품 번호를 사용하여 검색할 수 있는 |
구매 문의 | 일반 IC 문의 : 샘플 및 소량 구매 ----------------------------------------------------------------------- IGBT, TR 모듈, SCR 및 다이오드 모듈을 포함한 광범위한 전력 반도체를 판매합니다. 전력 반도체 전문업체 상호 : 아이지 인터내셔날 사이트 방문 : [ 홈페이지 ] [ 블로그 1 ] [ 블로그 2 ] |
부품번호 | 상세설명 및 기능 | 제조사 |
BU2611A | PLL frequency synthesizer for tuners | ROHM Semiconductor |
BU2611AF | PLL frequency synthesizer for tuners | ROHM Semiconductor |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |