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PDF U4286BM-BFP Data sheet ( Hoja de datos )
| Número de pieza | U4286BM-BFP | |
| Descripción | AM / FM-PLL | |
| Fabricantes | TEMIC Semiconductors | |
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TELEFUNKEN Semiconductors
U4286BM
AM / FM-PLL
Description
The U4286BM 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 Reference oscillator up to 15 MHz
D Two programmable 16 bit dividers
adjustable from 2 to 65535
yD Fine tuning steps: AM 1 kHz
yFM 2 kHz
D Two programmable switching outputs (open drain up
to 20 V)
D Few external component requirements due to
integrated loop-transistor for AM/FM
D High signal/ noise ratio
Block Diagram
OSCIN
OSCOUT
14
Oscillator
15
R–Divider
SWO 1 SWO 2
56
Switching outputs
SCL
SDA
AS
2
3
4
I2C–BUS
Interface
FMOSC 7 Preamplifier : 2
Latch
Shift register
Latch
Latch
Status
Phase
detector
9
AMOSC
Preamplifier
AM/FM
switch
8
GND 2
N–Divider
1
VDD
16
GND 1
11
Current
sources
12
10
Analogue
outputs 13
PDFM
PDAM
PDFMO
PDAMO
93 7581 e
Figure 1.
Rev. A1: 19.08.1996
Preliminary Information
1 (9)
1 page  
TELEFUNKEN Semiconductors
U4286BM
Electrical Characteristics
VDD = 5 V, Tamb = 25°C, unless otherwise specified
Parameters
Test Conditions / Pins Symbol Min. Typ. Max. Unit
Supply voltage
Pin 1
Quiescent
Pin 1
supply current
WFM Input Sensitivity, RG = 50 FMOSC
fi = 70 to 120 MHz
Pin 7
fi = 120 to 130 MHz
Pin 7
WAM Input Sensitivity, RG = 50 AMOSC
fi = 0.5 to 35 MHz
Pin 9
WOscillator Input Sensitivity, RG = 50 OSCIN
fi = 0.1 to 15 MHz
Pin 14
Switching Output SWO 1, SWO 2 (Open Drain)
VDD
IDD
4.5
5.0 5.5
V
6.0 11.6 mA
VSFM
VSFM
25
50
mV
mV
VSAM
25
mV
VSOSC
100
mV
Output voltage
LOW
LOW
Output leakage current
HIGH
Phase Detector PDFM
Output current 1
Output current 2
Pin 5, 6
IL = 1 mA
IL = 0.1 mA
Pin 5, 6
V5, V6 = 20 V
Pin 11
Pin 11
Phase Detector PDAM
Output current 1
Output current 2
Pin 12
Pin 12
Analogue Output PDFMO, PDAMO
VSWOL
VSWOL
200 400 mV
20 100 mV
IOHL
100 nA
" mIPDFM 400 500 600
" mIPDFM 100 125 150
A
A
"IPDAM
"IPDAM
75
20
100 125
25 30
mmAA
Saturation voltage
Leakage current
I2C Bus SCL, SDA, AS
I = 15 mA
Pin 10, 13
Pin 10, 13
Vsat
ILEAK
270 400 mV
1 mA
Input voltage
HIGH
LOW
Output voltage
Acknowledge LOW
Clock frequency
Rise time SDA, SCL
Fall time SDA, SCL
Period of SCL
HIGH
LOW
Pin 2, 3, 4
ISDA = 3 mA Pin 3
Pin 2
Pin 2, 3
Pin 2, 3
Pin 2
ViBUS
VO
fSCL
tr
tf
tH
tL
3.0
0
4.0
4.7
VDD
1.5
V
V
0.4 V
100 kHz
1 ms
300 ns
ms
ms
Rev. A1: 19.08.1996
Preliminary Information
5 (9)
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet U4286BM-BFP.PDF ] | |
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