Ordering number : ENA0974A
Bi-CMOS IC
LV2283VB
FM Transmitter IC with
Stereo Modulation
Overview
The LV2283VB is an FM Transmitter IC. MPX block makes stereo modulated, composite signal from L and R sound
inputs. RF VCO includes FM modulation function. PLL synthesizer determines RF output frequency with I2C control.
Application
• Portable Memory Player
• Portable HDD Player
• Wireless Headphone
Features
• (Audio)
• (RF)
• (PLL)
• (Bus control)
• (Regulator)
Pilot tone system stereo modulation, audio attenuation
VCO, programmable gain driver amplifier
70 to 110MHz 100kHz step
I2C bus control
2.8V LDO regulator
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter
Symbol
Conditions
Ratings
Pin 6
Unit
Maximum supply voltage
VCC max
7.0
Maximum input voltage
VIN max
VCC+0.3
V
Minimum input voltage
VIN min
-0.3
V
Allowable power dissipation
Pd max
500
mW
Ta ≤ 85°C, Mounted on a specified board*
V
Operating temperature
Topr
-40 to +85
°C
Storage temperature
Tstg
-55 to +150
°C
* Specified board : 114.3mm×76.1mm×1.6mm, glass epoxy circuit board.
Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to
"standard application", intended for the use as general electronics equipment (home appliances, AV equipment,
communication device, office equipment, industrial equipment etc.). The products mentioned herein shall not be
intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace
instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety
equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case
of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee
thereof. If you should intend to use our products for applications outside the standard applications of our
customer who is considering such use and/or outside the scope of our intended standard applications, please
consult with us prior to the intended use. If there is no consultation or inquiry before the intended use, our
customer shall be solely responsible for the use.
Specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein stipulate
the performance, characteristics, and functions of the described products in the independent state, and are not
guarantees of the performance, characteristics, and functions of the described products as mounted in the
customer' s products or equipment. To verify symptoms and states that cannot be evaluated in an independent
device, the customer should always evaluate and test devices mounted in the customer' s products or
equipment.
D2607 MS 20071211-S00002 / D1207 MS PC No.A0974-1/10
LV2283VB
Recommended Operating Conditions at Ta = 25°C
Parameter
Symbol
Conditions
Ratings
Unit
Recommended supply voltage
VCC
Pin 6
3.3
V
Operating supply voltage range
VCC op
Pin 6
2.8 to 5.5
V
AC Characteristics Ta = 25°C, VCC = 3.3V, I2C bits = Default state, L and R input = 1kHz, 450mVrms,
unless otherwise noted
Parameter
Symbol
Ratings
Conditions
min
Circuit current
ICC
No input signal, Pin 6 current
Standby current
ISTB
No input signal, I2C bit “STB” = “1”,
typ
Unit
max
8
10
mA
1.0
µA
Pin 6 current
Audio and MPX Blocks
Parameter
Symbol
Ratings
Conditions
min
Maximum audio input
typ
Unit
max
VA max
Pin 1 and 24 input
Audio input frequency
FAF
Pin 1 and 24 input
20
Channel separation
SEP
Pin 7, composite output, L→R, R→L
20
35
Pin 7, composite output
-2
0
0.1
0.3
%
0.5
0.85
1.2
mVp-p
3.3
3.8
4.3
mVrms
30
35
1.5
2
2.5
dB
Channel balance
Total harmonic distortion
Pilot tone output level
Composite output level
Audio mute
CB
THD
PMOD
MUTE
ATTSTEP
Crystal oscillator frequency (1)
FXOSC (1)
15k
Pin 7, composite output
I2C bits “ST” =”1”
MPXOUT
Audio attenuation adjustment step
900
I2C
bit “MUTE” = “1”
I2C bit “ATT2 – ATT0” = “000” to “111”,
mVrms
Hz
dB
2
dB
dB
totally 8 steps.
Pin 21 and Pin 22
76
kHz
RF Blocks
Parameter
Symbol
Ratings
Conditions
min
RF output
RFOUT
f = 98MHz, I2C bit “RF2 - RF0” = “011”,
typ
Unit
max
109
112
115
dBµV
0.4
0.9
1.4
dB
110
MHz
Pin 12 output
RF output adjustment step
RFSTEP
I2C bit “RF2 – RF0” = “000” to “111”,
totally 8 steps. Pin 12 relative output.
RF frequency
FRF
100kHz step
70
PLL Blocks
Parameter
Symbol
Ratings
Conditions
min
typ
Unit
max
I2C input “High” voltage
VH
0.8VCC
VCC+0.3
V
I2C input “Low” voltage
VL
-0.3
0.2VCC
V
19kHz output voltage
V19K
Pin 20. 19kHz output. I2C bit “19K” = “1”.
0.6VCC
0.8VCC
Vp-p
Load impedance = 47kΩ.
RF input frequency
Crystal oscillator frequency (2)
External clock frequency
FPLL
FXOSC (2)
FEXT
Step = 100kHz, See table 1
70
Pin 16
External clock injection to Pin 13
110
16
1
MHz
MHz
24
MHz
instead of 16MHz crystal oscillation.
When the LSI is standby mode, external
clock should be stop.
CP output current
ICP
CP voltage = 1.4V
30
µA
No.A0974-2/10
LV2283VB
Package Dimensions
unit : mm (typ)
3287
6.5
24
0.5
6.4
4.4
13
12
1
0.5
0.15
0.22
0.1
(1.3)
1.5max
(0.5)
SANYO : SSOP24(225mil)
Pin Assignment
L-INPUT 1
L-CAP 2
GND 3
MPX+B 4
24 R-INPUT
23 R-CAP
22 76K OSC IN
21 76K OSC OUT
GND 5
20 19K OUT
VCC 6
19 COUNTER RESET
COMPOSITE OUT 7
18 SDA
CP OUT 8
17 SCL
GND 9
16 XTAL
VCO 10
15 GND
RF+B 11
RF OUT 12
14 PLL+B
13 GND
No.A0974-3/10
LV2283VB
R-INPUT
R-CAP
76K OSC IN
76K OSC OUT
19K OUT
COUNTER RESET
SDA
SCL
XTAL
GND
PLL+B
GND
Block Diagram
24
23
22
21
20
19
18
17
16
15
14
13
Preemphasis
(19K)
X'tal OSC
Shift Register
Switch
38kHz
1/2
38kHz
(R6-R0)
VCC
X'tal
OSC
(RF2-RF0)
(P10-P0)
100kΩ
reset
(MUTE,ST)
19kHz
1/2
R-Counter
(ATT2-ATT0)
Phase DET
reset
P-Counter
(PILOT)
Attenuator
Charge Pump
L-CAP
GND
MPX+B
GND
6
7
8
9
10
11
12
RF OUT
5
VCO
4
GND
3
CP OUT
2
COMPOSITE OUT
1
L-INPUT
Preemphasis
RF+B
VCO
2.8V
Regulator
VCC
Switch
AC Testing Circuit
SW1
a R-INPUT
+
b
47kΩ
1µF
24
23
1
2
1µF
76KHz
22
21
VCC
COUNTER RESET
19K OUT
SW5
SW4
EXTERNAL
CLOCK
INPUTT
16MHz
3.3kΩ
3.3kΩ
SDA
SCL
100nF
270pF
20
19
18
17
16
15
14
13
5
6
7
8
9
10
11
12
SG INPUT
4
1µF
+
390nH RF OUT
10µF
100nF
a
100nF
SW3
b
Stereo DEC
COMP-OUT
VCC
R-OUT
3
L-OUT
SW2
a L-INPUT
+
1µF
b
VA
No.A0974-4/10
LV2283VB
Pin Description
Pin No.
1
Pin Name
L-INPUT
DC Voltage
Description
(V)
0
Equivalent Circuit
Left channel input. If audio source DC
voltage is not 0V, AC coupling
6
capacitance is required. Pre-emphasis
4
capacitance should be required between
pin 1 (24) and 2 (23).
50kΩ
1
1kΩ
24
10kΩ
2
23
5
2
L-CAP
0
3
GND
0
4
MPX+B
2.8
See Pin 1
LDO regulator output for audio frequency
6
and MPX blocks. External decoupling
capacitance is required.
4
5
5
GND
0
6
VCC
3.3
7
COMPOSITE
0.05
Stereo modulated output.
6
OUT
4
12kΩ
7
2kΩ
5
8
CP OUT
-
Charge pump current output.
6
11
30µA
8
30µA
9
9
GND
0
Continued on next page.
No.A0974-5/10
LV2283VB
Continued from preceding page.
Pin No.
10
Pin Name
VCO
DC Voltage
Description
(V)
2.2
Equivalent Circuit
Transistor BASE terminal for Colpitz
6
oscillator.
11
10
9
11
RF+B
2.8
LDO regulator output for RF blocks.
6
11
5
12
RF OUT
2.8
Collector output. Inductance should be
connected Between pin 11 and pin 12 for
6
getting resonant frequency and making
11
pin12 DC bias 2.8V.
450Ω
20Ω
12
13
13
GND
14
PLL+B
0
2.8
LDO regulator output for digital blocks.
6
14
5
15
GND
0
Continued on next page.
No.A0974-6/10
LV2283VB
Continued from preceding page.
Pin No.
16
Pin Name
XTAL
DC Voltage
Description
(V)
2.0
Equivalent Circuit
16MHz crystal is needed for PLL
6
reference frequency. If external clock is
14
injected to Pin 16, frequency should be
from 1MHz to 24MHz and N (integer) ×
200kHz.
When the IC is Standby mode, external
clock should be stop.
16
15
17
SCL
-
I2C clock input.
6
CMOS Logic Input
17
15
18
SDA
-
I2C data input.
6
CMOS Logic Input
18
15
19
COUNTER
3.3
RESET
Usually pin 19 should be kept “Logic High”
6
or opened (pull up 100kΩ makes pin 19
“Logic High” automatically).
100kΩ
When pin 19 is “Logic Low” level, internal
1kΩ
19
frequency counter from 76kHz to 19kHz is
CMOS Logic Input
reset.
15
20
19K OUT
-
19kHz output (same phase as pilot tone).
6
When I2C bit “19K”=0, Pin 20 is kept
“Logic Low” level.
20
CMOS Logic Output
15
21
76K OSC
OUT
2.0
For stereo modulator pilot signal and sub
carrier. 76kHz crystal should be
connected between Pin 21 and Pin 22
6
14
21
22
1kΩ
1kΩ
1MΩ
15
Continued on next page.
No.A0974-7/10
LV2283VB
Continued from preceding page.
Pin No.
DC Voltage
Pin Name
Description
(V)
Equivalent Circuit
22
76K OSC IN
0.7
See Pin 21
23
R-CAP
0
See Pin 1
See Pin 21
See Pin 21
24
R-INPUT
0
See Pin 1
See Pin 21
I2C Bus Definition
Table 1. I2C Bus Write Data Format
Name
Bit
Byte
ACK
MSB (1)
Address Byte
1
Control Byte 1
AD7
AD6
AD5
AD4
AD3
AD2
AD1
R/W
1
1
0
1
0
0
0
0
P10
P9
P8
P7
P6
P5
P4
P3
0
1
1
1
1
0
1
0
P2
P1
P0
19K
ST
PILOT
STB
MUTE
1
0
0
0
1
1
0
0
RES1
RES0
RF2
RF1
RF0
ATT2
ATT1
ATT0
0
0
1
1
1
0
1
1
R6
R5
R4
R3
R2
R1
R0
TEST
1
0
1
0
0
0
0
0
2
Control Byte 2
3
Control Byte 3
4
Control Byte 4
LSB
5
A
A
A
A
A
(1) : MSB is transmitted first.
Table 2. I2C Write Mode Description
Bit
Name
AD7 – AD1
Address bit
LV2283VB requires address bits.
Description
R/W
Read/Write
“0” for Write mode (Write mode only).
A
Acknowledge
P10 – P0
Programmable counter
11 bit Programmable counter. P0 = LSB, P10 = MSB.
RF Frequency = (P10×210 + P9×29 + ... P1×21 + P0) × 100kHz
Default state = “01111010100” (980)
19K
19kHz output
ST
MONO/ST selection
19K OUT (Pin 20) ON / OFF. “19K” = “0” for no output. “1” for 19kHz output (same phase as pilot tone).
Default state = “0”
Monaural/Stereo transmission mode selection. “ST” is set “0” for monaural mode (no pilot tone), “1” for
stereo transmission. Default state = “1”
PILOT
Pilot tone output
STB
Standby
MUTE
Audio mute
“1” for normal operation (default). “0” for NO pilot tone in composite output even if ST bit = “1” (Stereo
mode).
RES1, RES0
Reserved bits
RF2 – RF0
RF output adjustment
“1” for standby mode. Default state = “0” for normal operation.
“1” for Audio mute. Default state = “0” for normal operation.
Reserved bits. Default state = “00” for normal operation.
RF output voltage adjustment with 8 degree, 1dB steps. “RF2, RF1, RF0” = “111” for maximum. “000” is
minimum RF output. Default state = “111”
ATT2 – ATT0
Audio attenuator
Audio attenuator for FM modulation fine adjustment is set by “ATT2, ATT1, ATT0” with 8 degree,
2dB steps. “111” is for 0dB attenuation. “000” is for 14dB attenuation. Default state = “011”.
R6 – R0
Reference counter
7 bit Programmable counter. R0 = LSB, R6 = MSB.
Reference frequency should be set 100kHz.
{Crystal oscillator frequency (Pin 16)} / {(R6×26 + R5×25 ... + R1×21 + R0) × 2} = 100kHz.
Default state = “1010000” (80 × 2).
TEST
Test mode
For IC testing. Set “0” for normal operation.
“1” for counter testing mode. Default state = “0”
No.A0974-8/10
LV2283VB
I2C Bus Operation
SDA
Serial I/F Bus
Controller
(Master)
Control Byte 1
Control Byte 4
7 6 5 4 3 2 1 0
7 6 5 4 3 2 1 0
Address Byte
Master
S 6 5 4 3 2 1 0 W
MSB
MSB First
LV2283VB
(Slave)
SCL
LSB MSB
A
Slave
MSB
LSB
LSB
A
S → Start condition
F
A
F → Stop condition
A → Acknowledge
Time chart
tBUF
tHD ; STA
tSU ; DAT
tSU ; STO
SDA
SCL
Start
condition
tLOW
tR
tHD ; DAT
tHIGH
Stop
condition
tF
Table 3. Timing specification
Parameter
Ratings
Symbol
min
typ
Unit
max
SCL clock frequency
fSCL
Bus free time between a STOP and START condition
tBUF
4.7
µs
tHD ; STA
4.0
µs
LOW period of the SCL clock
tLOW
4.7
µs
HIGH period of the SCL clock
tHIGH
4.0
µs
Data hold time
tHD ; DAT
0.0
µs
Data set-up time
tSU ; DAT
250
Hold time START condition
100
ns
Rise time of both SDA and SCL signals
tR
1000
Fall time of both SDA and SCL signals
tF
300
Set-up time for STOP condition
tSU ; STO
4.0
kHz
ns
ns
µs
I2C Bus AC Characteristics : Temp=25°C VCC = 3.3V
Note : I2C Bus is a registered trademark of the Philips Co..
No.A0974-9/10
LV2283VB
Preemphasis
76KHz
22
21
SCL
23
SDA
24
COUNTER
RESET
R-INPUT
19K OUT
Application Circuit
20
19
18
17
X'tal OSC
Shift Register
VCC
Switch
16
15
14
13
11
12
X'tal
OSC
1/2
R-Counter
1/2
Phase DET
Switch
Attenuator
Charge Pump
1
VCO
2.8V
Regulator
Preemphasis
L-INPUT
P-Counter
2
3
4
5
6
7
8
9
10
+
VCC
+
SANYO Semiconductor Co.,Ltd. assumes no responsibility for equipment failures that result from using
products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition
ranges, or other parameters) listed in products specifications of any and all SANYO Semiconductor Co.,Ltd.
products described or contained herein.
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semiconductor products fail or malfunction with some probability. It is possible that these probabilistic failures or
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to smoke or fire, or accidents that could cause damage to other property. When designing equipment, adopt
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product/technology improvement, etc. When designing equipment, refer to the "Delivery Specification" for the
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Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed
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This catalog provides information as of December, 2007. Specifications and information herein are subject
to change without notice.
PS No.A0974-10/10