TA1372FNG
TOSHIBA Bipolar Linear Integrated Circuit Silicon Monolithic
TA1372FNG
VHF Band RF Modulator IC for VCRs and Set top boxes
The TA1372FNG is a VHF band RF modulator IC that features
PLL-based RF carrier and sound intercarrier oscillation.
There is no external parts of RF Oscillator and Sound Oscillator.
Therefore, PCB design and adjustment with much time are not
required.
The TA1372FNG is compatible with CH 3 & CH 4 (U.S.A. channel)
of NTSC television system.
SSOP16-P-225-0.65B
Weight: 0.07 g (typ.)
Features
•
RF Oscillator is all built in IC and external tank circuit is not required.
(U.S.A. channels CH 3 & CH 4)
•
Sound Oscillator is all built in IC and external tank circuit is not required.
Formats supported: System M
•
The Picture to Sound ratio is set up by external resistance.
•
Muted RF output on power-on and as required.
•
Reference signal can use 4MHz and 3.579545MHz.
These modes are selected by pin 1.
•
In Carrier off mode, Supply current is saved by stopping Sound VCO.
•
There is White Clip Through Mode in test mode.
•
Package is improved to Lead-Free
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TA1372FNG
Block Diagram
N.C.
16
RF
signal
output
15
Antnna SW
driver
output
14
Sound PLL
loop
filter
12
Analog
VCC
13
Digital
VCC
11
A.VCC
Voltage
Regulator
D.VCC
RF
Mod.
Mixer
P/S ratio
set up
10
Sound
VCO
9
D.GND
Charge
Pump
Sound
Counter
Video Mod.
Digital
GND
Phase
Comp.
20.8 kHz
1/4
White
Clip
Reference
Divider
RFCarrier
OSC
Clamp
Programmable
Divider
Charge
Pump
Phase
Comp.
X’tal
OSC
62.5 kHz
A.GND
1
2
3
4
5
Reference
signal mode
selection
Video
signal
input
RF PLL
loop
filter
Analog
GND
Sound
signal
input
6
Carrier off
mode
selection
7
8
4 MHz X’tal
or External
Reference
signal input
Channel
selection
Some of the functional blocks, circuits, or constants in the block diagram may be omitted or simplified for
explanatory purpose.
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TA1372FNG
Pin Description (VCC = 5.0 V, Ta = 25°C)
The equivalent circuit diagrams may be simplified or some parts of them may be omitted for explanatory purpose.
Pin
No.
Name
DC Voltage AC Voltage
(typ.)
(typ.)
Interface equivalent circuit
Note
1
Reference
signal Mode
selection
120 kΩ
D.VCC
H: 5 V
M: 2.5V
⎯
10 kΩ
1
L: 0 V
D.GND
A.VCC
2.4 V
500 mVp-p
Input
(sync tip)
(80%
modulation)
2
A.GND
RF PLL loop
filter
⎯
⎯
1 kΩ 1 kΩ
D.VCC
3
3
2 kΩ
Analog GND
(0 V)
⎯
⎯
10 kΩ
Sound signal
input
167 mVp-p
L: 0 V
(100% FM
modulation)
(normal
mode)
2 kΩ
5
The reference frequency is
62.5 kHz.
Sound modulation depth is
set by level of sound signal
input on this pin.
Sound pre-emphasis is
applied before this pin.
This pin is also used for
switching test mode.
105 kΩ
5
M: 2.5V
RF oscillation frequency is
compared with RF setting
frequency(pin 8), and the
error is outputted by Charge
pump.
Analog GND
A.VCC
H: 5 V
White clip level for IC is set
internally for DC, but it will
change by the high
frequency-factor.
LPF for high frequency
rejection is connected to
this terminal. And the
voltage for RF VCO control
is generated.
D.GND
4
Sync tip clamp input. It is
used by AC coupling.
Video modulation depth is
set by level of input signal
on this pin.
3.1 V
2
Video signal
Reference signal Mode can
be selected this pin.
High or Open: 4MHz
external input mode
Middle: 3.579545MHz
external input mode
Low: Internal Oscillation
Mode with 4MHz X’tal
A.GND
Normally this pin is used at
0 V DC (used by AC
coupling).
H: Test mode
M: Test mode (White Clip
through mode)
L (open): Normal mode
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TA1372FNG
Pin
No.
Name
DC Voltage AC Voltage
(typ.)
(typ.)
Interface equivalent circuit
Note
D.VCC
Carrier off
mode
selection
H: 5 V
L: 0 V
⎯
High : Carrier ON
10 kΩ
6
Antenna SW High
110 kΩ
6
Low or Open : Carrier OFF
D.GND
100 kΩ
(Note1)
(External
input
mode)
3.6 V
⎯
4 MHz X’tal
Antenna SW Low
D.VCC
4.3 V
7
This terminal is selection of
Carrier off-mode and
Antenna SW driver output.
2.7 V
(Note2)
2 kΩ
7
2 kΩ
0.1 mA
Reference signal Mode can
be selected pin 1.
D.GND
(Internal
oscillation
mode)
As reference signal, either
4-MHz crystal resonator can
be connected to this pin for
internal oscillation or
external signal can be input.
Note1: Internal oscillation mode OFF
Note2: External input mode OFF
H: 5 V
8
Channel select
L: 0 V
120 kΩ
D.VCC
⎯
This terminal is the
selection of RF VCO
oscillation frequency.
10 kΩ
8
Open or High : USA 3ch
Low : USA 4ch
D.GND
9
Digital GND
(0 V)
⎯
⎯
Digital GND
P/S ratio
10
set up
50 kΩ
A.VCC
5V
(Pin Open)
⎯
P / S ratio is set up by
connecting resistance with
this terminal between GND.
80 kΩ
10
A.GND
11
Digital Vcc
(5 V)
⎯
Digital Vcc
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TA1372FNG
Pin
No.
Name
DC Voltage AC Voltage
(typ.)
(typ.)
Interface equivalent circuit
Note
Sound PLL
12
loop filter
⎯
⎯
1 kΩ 1 kΩ
D.VCC
12
LPF for high frequency
rejection is connected to
this terminal. And the
voltage for sound VCO
control is generated.
2 kΩ
D.GND
13
Analog Vcc
(5 V)
Sound VCO oscillation
frequency is compared with
4.5MHz, and the error is
outputted by Charge pump.
⎯
The reference frequency is
20.8 kHz.
Analog Vcc
Ａ.VCC
Antenna SW
driver output
H: 4.1 V
L: 0 V
⎯
14
67 kΩ
14
This terminal is a driver
output for an Antenna SW
switching and controlled by
the terminal 6.
The maximum output
current is 15mA.
D.GND
A.VCC
RF signal
output
3.2 V
93dBµV
550 Ω
15
RF signal output pin.
15 Low-impedance
emitter-follower output
A.GND
16
N.C.
⎯
⎯
⎯
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TA1372FNG
Explanation in each mode
1. Reference signal Mode selection (Pin 1)
As reference signal, either 4-MHz crystal resonator can be connected to this pin for internal oscillation or
external signal can be input. Reference signal Mode can be selected pin 1. 4MHz and 3.579545MHz can be
used for the frequency of an external input signal.
Voltage of pin 1
Reference signal mode
High or Open
4MHz External input
Middle
3.579545MHz External input
Low
Internal oscillation with 4MHz X’tal
2. Test mode selection (Pin 5)
Pin 5 is also used for switching test mode. Normally this pin is used at 0 V DC (used by AC coupling).
White clip mode is prepared into test mode. ( e.g. when modulation characteristics for near-100%
modulation are being checked.)
Voltage of pin 5
Mode
High
Test mode
White Clip through mode
Middle
(Test mode)
Low or Open
Normal mode
If the voltage of a terminal 5 becomes more than 1.2V, it will change to the test mode.
Be careful of the influence of a noise etc.
3. Carrier off mode selection (Pin 6)
Pin 6 is selection of Carrier off-mode and Antenna SW driver output. In Carrier off mode, Supply current is
saved by stopping Sound VCO.
Voltage of pin 6
RF&sound oscillation
Antenna SW driver output (pin 14)
High
ON
High
Low or Open
OFF
Low
When changing a carrier ON, RF output is muted the time of about 130 msec. Mute of RF output is for
avoiding the influence of the noise by RF carrier frequency being unstable. At the time of Channel
switching, RF output is muted similarly.
4. Channel selection (Pin 8)
Pin 8 is the selection of RF VCO oscillation frequency.
Voltage of pin 8
Channel
High or Open
USA 3ch (61.25MHz)
Low
USA 4ch (67.25MHz)
5. P/S ratio set up (Pin 16)
P / S ratio is set up by connecting resistance with pin 16 between GND. P / S ratio can be set as the range of
–9dB to -17dB.
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TA1372FNG
Maximum Ratings (Ta = 25°C)
The absolute maximum ratings of a semiconductor device are a set of specified parameter values, which
must not be exceeded during operation, even for an instant.
If any of these rating would be exceeded during operation, the device electrical characteristics may be
irreparably altered and the reliability and lifetime of the device can no longer be guaranteed.
Moreover, these operations with exceeded ratings may cause break down, damage and/or degradation to
any other equipment.
Applications using the device should be designed such that each maximum rating will never be exceeded in
any operating conditions. Before using, creating and/or producing designs, refer to and comply with the
precautions and conditions set forth in this documents.
Characteristics
Symbol
Supply voltage
Rating
Unit
VCC
6
V
PD
810
mW
Input terminal voltage
VIN
GND − 0.3~VCC + 0.3
V
Operating temperature
Topr
−20~75
°C
Storage temperature
Tstg
−55~150
°C
Power dissipation
(Note 1)
Note 1: Power dissipation in the IC alone. If the device is operated at Ta > 25°C, this parameter must be derated by
6.5 mW per 1°C.
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TA1372FNG
Electrical Characteristics (VCC = 5.0 V, Ta = 25°C, When there is no indication of
conditions fp = 61.25 MHz)
No.
1-1
Symbol
Min
Typ.
Max
Unit
5.0
5.5
V
Note
Supply voltage
Vcc
4.5
Operating frequency range
fop
61.25
-
67.25
MHz
fp frequency
Supply current 1
(Normal mode)
Icc1
38
45
51
mA
Normal moe,IANT SW=0mA
1-4
Supply current 2
(Carrier off mode)
Icc2
2.5
3.5
4.5
mA
Carrier off mode
2-1-1
Video RF output level
Vo
90
93
96
dBμV
50-Ω termination, staircase (B/W) signal,
0.5-Vp-p input
2-1-2
Video RF output level
(Difference of channel)
ΔVo
-1.2
0.2
0.8
dB
50-Ω termination, staircase (B/W) signal,
0.5-Vp-p input, Vo(3ch) – Vo(4ch)
2-2
Video modulation depth
mp
76
80
84
%
White signal:0.5Vp-p input
2-3
White clipping level
mpMAX
88
92
96
%
White signal:1.0Vp-p input
2-4
Differential gain
DG
-5
0
+5
%
10-step staircase signal: 0.5-Vp-p input
(chroma signal = 20 IRE), 9th step
2-5
Differential phase
DP
-5
0
+5
°
10-step staircase signal: 0.5-Vp-p input
(chroma signal = 20 IRE), 9th step
2-6
Video S/N ratio
mpS/N
50
51.5
-
dB
0.1 MHz~4.2 MHz, unweighted,
50% White signal input
2-7
Video frequency responce
fv
-2.4
-0.4
1.6
dB
0.1 MHz~4.2 MHz, referenced to 1 MHz
2-8
Average picture level drift
mp(APL)
-3
0
+3
%
10%~90% APL, referenced to 50%,
variation in video modulation depth
2-9
Sync crush level
Δsync
-
1
3
%
{1 − (Vsync/Vwhite) × (100/40)}
2-10
Chroma beat
Vc
-
-75
-70
dB
3.58MHz sine wave: 0.5-Vp-p input,
Referenced to video carrier level,
P/S ratio = −16dB
2-11-1
Video RF 2nd harmonic
V2fp
-
-35
-30
dB
Referenced to video carrier level
2-11-2
Video RF 3rd harmonic
V3fp
-
-33
-28
dB
Referenced to video carrier level
2-11-3
Video RF 4th harmonic
V4fp
-
-55
-50
dB
Referenced to video carrier level
2-12
Video harmonic
Vph
-
-53
-50
dB
1MHz sine wave: 0.5-Vp-p input,
Referenced to fp+1MHz level,
Level of fp+2MHz
2-13-1
Video carrier frequency
accuracy 1
Δfp4
-50
0
50
kHz
Reference frequency 4MHz, Internal
oscillation mode, Series capacitance of
crystal : 6pF
2-13-2
Video carrier frequency
accuracy 2
Δfp358
-0.008
-
+34
kHz
Reference frequency 3.579545MHz,
External signal input mode
1-2
Entire
1-3
IC
Video
Block
Characteristics
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TA1372FNG
No.
Characteristics
3-1-1
Picture to Sound ratio
3-1-2
Symbol
Min
Typ.
Max
Unit
RP/S
-18
-16
-14
dB
P/S ratio: −16dB set-up, Connecting a
16k ohm resistor between pin 10 and
GND. staircase (B/W) signal: 0.5-Vp-p
input
Picture to Sound ratio
(Difference of channel)
ΔRP/S
-0.5
0
0.5
dB
P/S ratio: −16dB set-up, Connecting a
16k ohm resistor between pin 10 and
GND. staircase (B/W) signal: 0.5-Vp-p
input, RP/S (3ch) –RP/S (4ch)
3-2-1
Maximum P/S ratio
RP/S max
-11
-9
-
dB
P/S ratio: maximum set-up,
Pin 10 is open.
staircase (B/W) signal: 0.5-Vp-p input
3-2-2
Minimum P/S ratio
RP/S min
-
-18
-16
dB
P/S ratio: minimum set-up, Pin 10 is
connected to GND.
staircase (B/W) signal: 0.5-Vp-p input
3-3
Sound modulation sensitivity
βFM
0.27
0.3
0.33
3-4-1
Sound S/N ratio 1
S/N(FM1)
51
52.5
-
dB
1-kHz sine wave input,
±25 kHz Dev. = 0dB, Inter Carrier
demod., De-Emph = IN
3-4-2
Sound S/N ratio 2
S/N(FM2)
50
51.5
-
dB
1-kHz sine wave input,
±25 kHz Dev. = 0dB, Color bar signal:
0.5-Vp-p input, Inter Carrier demod.,
De-Emph = IN
kHz/mV 1-kHz sine wave: 167 mVp-p input
βFM = ∆f (kHz)/ 167 (mV)
Sound
Block
(with video signal)
Logic
Block
Note
3-5
Sound distortion
THD
-
0.3
0.5
%
1-kHz sine wave: ±25kHz Dev.
3-6
Sound frequency response
fs
-2
0
2
dB
100 Hz~100 kHz, 1-kHz reference
3-7
Maximum FM deviation
ΔDev
400
450
-
%
1-kHz sine wave input, THD<3%
3-8-1
Sound RF 2nd harmonic
VSH1
-
-70
-65
dB
P/S ratio = −16dB set-up,
Video carrier level reference
3-8-2
Sound RF 3rd harmonic
VSH2
-
-75
-70
dB
P/S ratio = −16dB set-up,
Video carrier level reference
3-9-1
Sound carrier frequency
accuracy 1
Δfs4
-750
0
750
Hz
Reference frequency 4MHz, Internal
oscillation mode, Series capacitance of
crystal : 6 pF
3-9-2
Sound carrier frequency
accuracy 2
Δfs358
-0.6
-
-
Hz
Reference frequency 3.579545MHz,
External signal input mode
4-1-1
Input voltage Low level for
channel selection
ViL1
0
-
1.7
V
Pin 8: Low:67.25MHz,
Open,High:61.25MHz
4-1-2
Input voltage High level for
channel selection
ViH1
2
-
Vcc
V
Pin 8
4-2-1
Input voltage Low level for
Carrier off mode selection
ViL2
0
-
1.7
V
Pin 6 Low,Open : Carrier off ,
Antenna SW Out Low
4-2-2
Input voltage High level for
Carrier off mode selection
ViH2
2
-
Vcc
V
Pin 6 High : Carrier on ,
Antenna SW Out High
4-3-1
Input voltage Low level for
reference signal mode
selection
ViL3
0
-
1.2
V
Pin 1 Low : Internal oscillation mode with
4MHz X'tal
4-3-2
Input voltage Middle level for
reference signal mode
selection
ViM3
1.8
2.5
3.2
V
Pin 1 Middle : 3.58MHz External signal
input mode
4-3-3
Input voltage High level for
reference signal mode
selection
ViH3
3.8
-
Vcc
V
Pin 1 Open,High : 4MHz External signal
input mode
4-4
Threshold voltage for
power-on reset
VRESET
2.5
2.8
3.1
V
4-5-1
Input voltage Low level for
Test mode selection
VIl4
0
-
1.2
V
Pin 5 Low : Normal mode
4-5-2
Input voltage High level for
Test mode selection
ViH4
1.8
-
Vcc
V
Pin 5 High : Test mode
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TA1372FNG
No.
Characteristics
Symbol
Min
Typ.
Max
Unit
4-6
Output voltage Low level of
Antenna SW driver
VOL
-
0
0.1
V
4-7
Output voltage High level of
Antenna SW driver
VOH
3.6
4
4.3
V
5-1
Negative resistance of X’tal
oscillator
RXO
-1
-
-
kΩ
5-2
Input signal level of external
reference signal
Vosc
50
10
-
mVp-p
10
Note
15mA load
External reference signal input Mode
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TA1372FNG
Input Waveforms
Staircase (B/W) signal
APL50%
40 IRE
V SYNC
40 IRE
100 IRE
VWHITE
100 IRE
White signal
63.5 µs
63.5 µs
40 IRE
90 IRE
20 IRE
Staircase (sub-carrier 20 IRE) signal
APL 50%
63.5 µs
Input Waveforms may be simplified for explanatory purpose.
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TA1372FNG
Test and Application Circuit
5V
0.47 µF
P/S ratio
set up
0.1 µF
1000 pF
16
15
14
16 kΩ
1000 pF
15 kΩ
0.47 µF
Antnna SW
driver
output
0.022 µF
RF
signal
output
13
12
11
A.VCC
Voltage
Regulator
RF
Mod.
Mixer
10
9
D.GND
D.VCC
Sound
VCO
Charge
Pump
Sound
Counter
Video Mod.
Phase
Comp.
20.8 kHz
1/4
White
Clip
Reference
Divider
RF Carrier
OSC
Clamp
Programmable
Divider
Charge
Pump
Phase
Comp.
X’tal
OSC
62.5 kHz
A.GND
Reference signal
mode selection
High,Open : Ext. 4MHz
Mid. : Ext. 3.58MHz
Low : Int. osc
Video
signal
input
Sound
signal
input
8
4 MHz
X’tal
Pre
Emph.
7
6 pF
6
1000 pF
5
1 µF
4
0.22 µF 15 kΩ
3
0.1 µF
0.1 µF
2
120 kΩ
1
(External
Reference
signal input)
Carrier off
mode selection
High : Carrier on
Low,Open : Carrier off
Channel
selection
High,Open : 3CH
Low : 4CH
Components in the test circuits are only used to obtain and confirm the device characteristics. These components
and circuits do not warrant to prevent the application equipment from malfunction or failure.
The application circuits shown in this document are provided for reference purposes only. Especially, a thorough
evaluation is required on the phase of mass production design. Toshiba dose not grant the use of any industrial
property rights with these examples of application circuits.
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TA1372FNG
Handling Precautions
1.
Do not drive the device’s power supply voltage High or Low until it is attached to an inspection board or
similar test assembly. Attaching the device to, or removing it from the inspection board while it is powered
on may damage the device or degrade its characteristics. The power supply voltage should not be applied
suddenly. Any overshoot or chattering in the power supply may result in degradation of the IC’s
characteristics. A filter or similar protective component should be inserted on the power supply line.
2.
If the voltage of a terminal 5(Sound signal input) becomes more than 1.2V, it will change to the test mode.
Be careful of the influence of a noise etc.
3.
The application circuits described in this document are merely intended as examples to enable the
operation of the device to be evaluated. None of the peripheral circuit configurations shown or circuit
constants specified are intended to be incorporated into application systems or used in designs for
mass-produced equipment. Toshiba Corporation cannot assume responsibility for any damage arising from
the use of any of these circuits. This is because the high-frequency characteristics of a device can vary
according to a number of factors, including factors relating to the external components and the mounting
pattern used. Therefore, the user must design external circuits according to the requirements of the specific
application system, using this document as a reference only. The user must also test the application
circuit’s characteristics thoroughly. This document only guarantees device quality and characteristics as
described herein; Toshiba Corporation cannot assume responsibility for any user’s product design or
application implementation.
4.
Before attempting to use this product, the user should refer to the latest edition of the Toshiba
Semiconductor Reliability Handbook, Integrated Circuits in order to gain a better understanding of the
general principles governing the quality and reliability of Toshiba products and to learn how Toshiba seeks
to enhance the management and control of product quality and reliability. The Toshiba Semiconductor
Reliability Handbook, Integrated Circuits is also available on the semiconductor products information page
of the Toshiba Electronic Components and Materials website at the following URL:
http://www.semicon.toshiba.co.jp/eng/prd/common/index.html.
(Last updated: Dec. 2003)
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TA1372FNG
Package Dimensions
Weight: 0.07 g (typ.)
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TA1372FNG
RESTRICTIONS ON PRODUCT USE
•
030619EBA
The information contained herein is subject to change without notice.
•
The information contained herein is presented only as a guide for the applications of our products. No
responsibility is assumed by TOSHIBA for any infringements of patents or other rights of the third parties which
may result from its use. No license is granted by implication or otherwise under any patent or patent rights of
TOSHIBA or others.
•
TOSHIBA is continually working to improve the quality and reliability of its products. Nevertheless, semiconductor
devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical
stress. It is the responsibility of the buyer, when utilizing TOSHIBA products, to comply with the standards of
safety in making a safe design for the entire system, and to avoid situations in which a malfunction or failure of
such TOSHIBA products could cause loss of human life, bodily injury or damage to property.
In developing your designs, please ensure that TOSHIBA products are used within specified operating ranges as
set forth in the most recent TOSHIBA products specifications. Also, please keep in mind the precautions and
conditions set forth in the “Handling Guide for Semiconductor Devices,” or “TOSHIBA Semiconductor Reliability
Handbook” etc..
•
The TOSHIBA products listed in this document are intended for usage in general electronics applications
(computer, personal equipment, office equipment, measuring equipment, industrial robotics, domestic appliances,
etc.). These TOSHIBA products are neither intended nor warranted for usage in equipment that requires
extraordinarily high quality and/or reliability or a malfunction or failure of which may cause loss of human life or
bodily injury (“Unintended Usage”). Unintended Usage include atomic energy control instruments, airplane or
spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments,
medical instruments, all types of safety devices, etc.. Unintended Usage of TOSHIBA products listed in this
document shall be made at the customer’s own risk.
•
•
The products described in this document are subject to the foreign exchange and foreign trade laws.
TOSHIBA products should not be embedded to the downstream products which are prohibited to be produced
and sold, under any law and regulations.
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