U4280 [TEMIC]
AM / FM - PLL; AM / FM - PLL
| 型号： | U4280 |
| 厂家： | 
TEMIC SEMICONDUCTORS |
| 描述： | AM / FM - PLL |
| 文件： | 总9页 (文件大小：175K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
U4280BM
AM / FM - PLL
Description
2
The U4280BM is an integrated circuit in BICMOS by I C bus. The device is designed for all frequency
technology for frequency synthesizer. It performs all the synthesizer applications of radio receivers, as well as
functions of a PLL radio tuning system and is controlled RDS (Radio Data System) applications.
Features
Frequency range up to 150 MHz
Reference oscillator up to 15 MHz
Pre-amplifier for AM and FM
5 programmable switching outputs,
4 are open drain outputs up to 15 V
Fine tuning steps: AM 1kHz
FM 2 kHz
Phase detector with separate outputs for AM and FM
Two programmable 16-bit divider,
adjustable from 2 to 65535
2
Controlled via I C bus
Ordering Information
Extended Type Number
U4280BM-B
Package
DIP20
SO20
Remarks
U4280BM-BFL
Block Diagram
PRT SWO1 SWO2 SWO3 AM/FM
5
6
7
8
9
OSCIN
18
19
Oscillator
R – Divider
Switching outputs
OSCOUT
Latch
Status
2
3
4
SCL
SDA
AS
Latch
Shift register
Latch
2
I C – BUS
14
15
interface
PDFM
PDAM
Phase
detector
Current
sources
13
16
PDFMO
PDAMO
Analog
outputs
12
10
AM / FM–
switch
Preamplifier
N – Divider
AMOSC
FMOSC
17
Lock
detector
Preamplifier : 2
LD
11
1
20
13346
GND2
VDD
GND1
Figure 1. Block diagram
TELEFUNKEN Semiconductors
1 (9)
Rev. A1, 10-Apr-97
Preliminary Information
U4280BM
Pin Description
Pin
1
2
3
4
Symbol
Function
Supply voltage
I C bus clock
20
19
GND
1
2
V
1
DD
V
DD
2
SCL
SDA
AS
OSCOUT
2
SCL
SDA
I C bus data
Address selection
Switching port
18 OSCIN
3
5
PRT
6
7
8
SWO1
SWO2
SWO3
Switching output 1
Switching output 2
Switching output 3
17
4
AS
LD
16
15
14
13
12
11
5
PDAMO
PDAM
PDFM
PRT
9
AM/FM Switching output AM/FM
FMOSC FM oscillator input
10
11
12
13
14
15
16
17
18
19
20
SWO1
SWO2
6
GND2
Ground 2 (analog)
AMOSC AM oscillator input
PDFMO FM analog output
7
PDFM
FM current output
PDAM AM current output
PDAMO AM analog output
8
PDFMO
AMOSC
GND
SWO3
LD
Lock detect
9
AM/FM
OSCIN Oscillator input
OSCOUT Oscillator output
10
FMOSC
GND1
Ground 1 (digital)
13319
Figure 2. Pinning
Functional Description
The U4280BM is controlled via the 2-wire I C bus. For Each transmission on the I C bus begins with the
programming there are one module address byte, two “START”-condition and has to be ended by the “STOP”-
2
2
subaddress bytes and five data bytes.
condition (see figure 3).
The module address contains a programmable address bit
A 1 which with address select input AS (Pin 4) makes it
possible to operate two U4280BM-B in one system. If bit
A 1 is identical with the status of the address select input
AS, the chip is selected.
The integrated circuit U 4283 BM has two separate inputs
for AM and FM oscillator. Pre-amplified AM signal is
directed to the 16 bit N-divider via AM/FM switch,
whereas (pre-amplified) FM signal is first divided by a
fixed prescaler (:2). AM/FM switch is controlled by
software. Tuning steps can be selected by 16 bit
R-divider. Further there is a digital memory phase
detector. There are two separate current sources for AM
and FM amplifier (charge pump) as given in electrical
characteristics. It allows independent adjustment of gain,
whereby providing high current for high speed tuning and
low current for stable tuning.
The subaddress determines which one of the data bytes is
transmitted first. If subaddress of R-divider is
transmitted, the sequence of the next data bytes is DB 0
(Status), DB 1 and DB 2.
If subaddress of N-divider is transmitted, the sequence of
the next data bytes is DB 3 and DB 4. The bit organisation
of the module address, subaddress and 5 data bytes are
shown in figure 2
2 (9)
TELEFUNKEN Semiconductors
Rev. A1, 10-Apr-97
Preliminary Information
U4280BM
Bit Organization
MSB
1
LSB
0
Module address
1
0
0
1
0
0/1
A1
A7
A6
A5
A4
A3
A2
A0
Subaddress (R-divider)
Subaddress (N-divider)
X
X
X
X
X
X
X
X
0
1
1
1
X
X
X
X
MSB
PRT
LSB
PD
CUR
Data byte 0 (Status)
SWO1 SWO2 SWO3
AM/
FM
PD
ANA
PD
POL
D7
D6
D5
D4
D3
D2
D1
D0
15
8
Data byte 1
Data byte 2
Data byte 3
Data byte 4
2
R-divider
2
7
0
2
R-divider
N-divider
N-divider
2
15
8
2
2
7
0
2
2
LOW
HIGH
AM/FM
FM-operation
PD analog
Negative polarity
Output current 2
AM-operation
TEST
Positive polarity
Output current 1
PD - ANA
PD - POL
PD - CUR
Figure 3.
TELEFUNKEN Semiconductors
3 (9)
Rev. A1, 10-Apr-97
Preliminary Information
U4280BM
Transmission Protocol
MSB
LSB
S
Address
A
Subaddress
R-divider
A
A
Data 0
Data 3
A
A
Data 1
A
A
Data 2
A
P
A7
A0
MSB
LSB
S
Address
A
Subaddress
N-divider
Data 4
A
P
A7
A0
S = Start
P = Stop
A = Acknowledge
Figure 4.
Absolute Maximum Ratings
Parameters
Symbol
Value
–0.3 to +6
Unit
V
Supply voltage
Pin 1
V
DD
Input voltages
Output currents
Output drain voltage
Ambient temperature range
Storage temperature range
Pins 2, 3, 4, 10, 12, 18 and 19
Pins 3, 5, 6, 7, 8 and 9
Pins 6, 7, 8 and 9
V
–0.3 to V + 0.3
V
mA
V
°C
°C
I
DD
I
–1 to +5
20
–25 to +85
–40 to +125
O
V
OD
T
amb
T
stg
Thermal Resistance
Parameters
Symbol
R
thJA
Value
160
Unit
K/W
Junction ambient
4 (9)
TELEFUNKEN Semiconductors
Rev. A1, 10-Apr-97
Preliminary Information
U4280BM
Electrical Characteristics
V
DD
= 5 V, T
= 25°C, otherwise specified
amb
Parameters
Test Conditions / Pins
Symbol
Min.
4.5
Typ.
5.0
6.0
Max.
5.5
11.6
Unit
V
mA
Supply voltage range
Quiescent supply voltage
FM input sensitivity
Pin 1
Pin 1
V
DD
DD
I
R = 50
Pin 10
G
f = 30 to 60 MHz
V
50
25
50
mV
mV
mV
i
I
f = 70 to 120 MHz
V
i
i
f = 120 to 130 MHz
i
V
i
AM input sensitivity
R = 50
G
Pin 12
f = 0.4 to 35 MHz
V
25
mV
mV
i
i
Oscillator input sensitivity R = 50
Pin 18
Pin 5
G
f = 0.1 to 15 MHz
i
V
i
100
2
1)
Adjustable divider
65535
Switching output, PRT
I = 1 mA
V
V
V
V – 0.4
DD
V
V
V
H
OH
I = 1 mA
0.4
0.1
L
OL
OL
I = 0.1 mA
L
SWO1 to SWO3, AM/FM
(open drain outputs)
Pins 6 to 9
I = 1 mA
I = 0.1 mA
L
V
OL
V
OL
0.4
0.1
V
V
L
LD (open drain)
Pin 17
I = 1 mA
L
V
OL
0.4
V
Phase detector
PDFM
Pin 14
Pin 15
Output current 1
Output current 2
I
I
±400
±100
±500
±125
±600
±150
A
A
O1
O2
PDAM
Output current 1
Output current 2
I
I
±75
±20
±100
±25
±100
±30
A
A
O1
O2
Analog output
Pins 14 and 15 to V
Pins 14 and 15 to GND
H input voltage, Pins 2 and 3
L input voltage, Pins 2 and 3
I
I
V
–1
0.5
–2
mA
mA
V
V
DD
13,16
13,16
0.1
3
0
2
I bus inputs SCL, SDA
V
DD
IH
V
IL
1.5
Output voltage
I
= 3 mA
V
O
0.4
V
SDAH
Clock frequency
Bus timing
Pin 2
f
0
110
kHz
SCL
Rise time SCL, SDA
Fall time SCL, SDA
“H” phase SCL
t
t
1
300
s
ns
s
s
s
s
s
ns
s
r
f
t
H
4
4.7
4
“L” phase SCL
t
L
Waiting time START
Set up time START
Set up time STOP
Set up time DATA
Hold time DATA
t
t
t
t
wSTA
4
hSTA
4.7
250
0
sSTA
sDAT
hDAT
t
1)
FM input frequency is additionally divided by two (Pin 10).
TELEFUNKEN Semiconductors
5 (9)
Rev. A1, 10-Apr-97
Preliminary Information
U4280BM
Bus Timing
twSTA
SDA
tHIGH
tf
tsSTA
tLOW
tsSTO
tr
SCL
thSTA
tsDAT
thDAT
START
CLOCK
DATACHANGE
STOP
13347
Figure 5. Bus timing
VDD
3 kΩ
PDFM
PDAM
13 PDFMA
16 PDAMA
22 kΩ
13401
Figure 6. Analog outputs PDFMA, PDAMA
6 (9)
TELEFUNKEN Semiconductors
Rev. A1, 10-Apr-97
Preliminary Information
U4280BM
Application Circuit
VDD
LD Test out
AM input
R5
4.7 kΩ
R6
C7
100 nF
R4
15 kΩ
Vtune
30 V
1.5 kΩ
C6
82 pF
C8
2.2 nF
R8
180 kΩ
4 MHz
C4
C5
22 pF
22 pF
20
19
18
17
16
15
14
13
12
11
FM–Tuner
VCO
C2
100 nF
U4280BM
C1
FM
1 µF
1
2
3
5
6
4
7
8
9
10
C3
R1
3.9 kΩ
1 nF
R2
750 Ω
R3
2
I C – Master –Transmitter
Ω
300
13348
LED
Figure 7. Application circuit
TELEFUNKEN Semiconductors
7 (9)
Rev. A1, 10-Apr-97
Preliminary Information
U4280BM
Package Information
Package DIP20 (CEI)
Dimensions in mm
7.87
7.37
26.42
25.40
3.80
3.05
0.89
0.38
6.6
6.1
3.81
3.18
0.38
0.20
1.65
1.14
9.40
7.62
2.54
22.86
20
11
technical drawings
according to DIN
specifications
13042
1
10
9.15
8.65
Package SO20
Dimensions in mm
12.95
12.70
7.5
7.3
2.35
0.25
0.25
0.10
0.4
10.50
10.20
1.27
11.43
20
11
technical drawings
according to DIN
specifications
13038
1
10
8 (9)
TELEFUNKEN Semiconductors
Rev. A1, 10-Apr-97
Preliminary Information
U4280BM
Ozone Depleting Substances Policy Statement
It is the policy of TEMIC TELEFUNKEN microelectronic GmbH to
1. Meet all present and future national and international statutory requirements.
2. Regularly and continuously improve the performance of our products, processes, distribution and operating systems
with respect to their impact on the health and safety of our employees and the public, as well as their impact on
the environment.
It is particular concern to control or eliminate releases of those substances into the atmosphere which are known as
ozone depleting substances (ODSs).
The Montreal Protocol (1987) and its London Amendments (1990) intend to severely restrict the use of ODSs and
forbid their use within the next ten years. Various national and international initiatives are pressing for an earlier ban
on these substances.
TEMIC TELEFUNKEN microelectronic GmbH semiconductor division has been able to use its policy of
continuous improvements to eliminate the use of ODSs listed in the following documents.
1. Annex A, B and list of transitional substances of the Montreal Protocol and the London Amendments respectively
2. Class I and II ozone depleting substances in the Clean Air Act Amendments of 1990 by the Environmental
Protection Agency (EPA) in the USA
3. Council Decision 88/540/EEC and 91/690/EEC Annex A, B and C (transitional substances) respectively.
TEMIC can certify that our semiconductors are not manufactured with ozone depleting substances and do not contain
such substances.
We reserve the right to make changes to improve technical design and may do so without further notice.
Parameters can vary in different applications. All operating parameters must be validated for each customer
application by the customer. Should the buyer use TEMIC products for any unintended or unauthorized
application, the buyer shall indemnify TEMIC against all claims, costs, damages, and expenses, arising out of,
directly or indirectly, any claim of personal damage, injury or death associated with such unintended or
unauthorized use.
TEMIC TELEFUNKEN microelectronic GmbH, P.O.B. 3535, D-74025 Heilbronn, Germany
Telephone: 49 (0)7131 67 2831, Fax number: 49 (0)7131 67 2423
TELEFUNKEN Semiconductors
9 (9)
Rev. A1, 10-Apr-97
Preliminary Information
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