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U4280BM PDF 데이터시트 : 부품 기능 및 핀배열

부품번호 U4280BM
기능 AM / FM - PLL
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U4280BM 데이터시트, 핀배열, 회로
AM / FM - PLL
U4280BM
Description
The U4280BM is an integrated circuit in BICMOS
technology for frequency synthesizer. It performs all the
functions of a PLL radio tuning system and is controlled
by I2C bus. The device is designed for all frequency
synthesizer applications of radio receivers, as well as
RDS (Radio Data System) applications.
Features
D Frequency range up to 150 MHz
D Pre-amplifier for AM and FM
yD Fine tuning steps: AM 1kHz
yFM 2 kHz
D Two programmable 16-bit divider,
adjustable from 2 to 65535
Ordering Information
Extended Type Number
U4280BM-B
U4280BM-BFL
D Reference oscillator up to 15 MHz
D 5 programmable switching outputs,
4 are open drain outputs up to 15 V
D Phase detector with separate outputs for AM and FM
D Controlled via I2C bus
Package
DIP20
SO20
Remarks
Block Diagram
OSCIN 18
19
OSCOUT
Oscillator
SCL
SDA
AS
2
3
4
I2C – BUS
interface
R – Divider
Latch
Shift register
Latch
12
AMOSC
Preamplifier
AM / FM–
switch
N – Divider
PRT SWO1 SWO2 SWO3 AM/FM
56789
Switching outputs
Latch
Status
Phase
detector
Current
sources
Analog
outputs
14
PDFM
15
PDAM
13
PDFMO
16
PDAMO
10
FMOSC
Preamplifier : 2
11
GND2
1
VDD
20
GND1
Figure 1. Block diagram
Lock
detector
17
LD
13346
TELEFUNKEN Semiconductors
Rev. A1, 10-Apr-97
Preliminary Information
1 (9)




U4280BM pdf, 반도체, 판매, 대치품
U4280BM
Transmission Protocol
MSB LSB
S Address A
A7 A0
Subaddress
R-divider
A Data 0 A Data 1 A Data 2 A P
MSB LSB
S Address A
A7 A0
Subaddress
N-divider
A Data 3 A Data 4 A P
A
S = Start P = Stop A = Acknowledge
Figure 4.
Absolute Maximum Ratings
Parameters
Supply voltage
Pin 1
Input voltages
Pins 2, 3, 4, 10, 12, 18 and 19
Output currents
Pins 3, 5, 6, 7, 8 and 9
Output drain voltage
Pins 6, 7, 8 and 9
Ambient temperature range
Storage temperature range
Symbol
VDD
VI
IO
VOD
Tamb
Tstg
Value
–0.3 to +6
–0.3 to VDD + 0.3
–1 to +5
20
–25 to +85
–40 to +125
Unit
V
V
mA
V
°C
°C
Thermal Resistance
Junction ambient
Parameters
Symbol
RthJA
Value
160
Unit
K/W
4 (9) TELEFUNKEN Semiconductors
Preliminary Information
Rev. A1, 10-Apr-97

4페이지










U4280BM 전자부품, 판매, 대치품
Application Circuit
U4280BM
VDD
R5
4.7 k
LD Test out
C7
R4 100 nF
1.5 k
C4 4 MHz C5
C6 R8
82 pF 180 k
AM input
C8
2.2 nF
R6
15 k 30 V
Vtune
C2
100 nF
C1
1 µF
22 pF
22 pF
20 19 18 17 16 15 14 13 12 11
U4280BM
FM–Tuner
VCO
1 2 3 4 5 6 7 8 9 10 C3
R1
R2 3.9 k
1 nF
I2C – Master –Transmitter
750
R3
300 LED
Figure 7. Application circuit
FM
13348
TELEFUNKEN Semiconductors
Rev. A1, 10-Apr-97
Preliminary Information
7 (9)

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전력 반도체 판매 ( IGBT, TR 모듈, SCR, 다이오드 모듈 )

휴대전화 : 010-3582-2743


상호 : 아이지 인터내셔날

전화번호 : 051-319-2877, [ 홈페이지 ]



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부품번호상세설명 및 기능제조사
U4280BM

AM / FM - PLL

TEMIC Semiconductors
TEMIC Semiconductors
U4280BM-B

AM / FM - PLL

TEMIC Semiconductors
TEMIC Semiconductors

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