TDA2546A [NXP]
Quasi-split-sound circuit with 5,5 MHz demodulation; 准分音电路5,5 MHz的解调型号: | TDA2546A |
厂家: | NXP |
描述: | Quasi-split-sound circuit with 5,5 MHz demodulation |
文件: | 总10页 (文件大小:88K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
INTEGRATED CIRCUITS
DATA SHEET
TDA2546A
Quasi-split-sound circuit
with 5,5 MHz demodulation
February 1985
Product specification
File under Integrated Circuits, IC02
Philips Semiconductors
Product specification
Quasi-split-sound circuit
with 5,5 MHz demodulation
TDA2546A
GENERAL DESCRIPTION
The TDA2546A is a monolithic integrated circuit for quasi-split-sound processing, including 5,5 MHz demodulation, in
television receivers.
Features
1st i.f. (V.C.: vision carrier plus S.C.: sound carrier)
• 3-stage gain controlled i.f. amplifier
• A.G.C. circuit
• Reference amplifier and limiter amplifier for vision carrier (V.C.) processing
• Linear multiplier for quadrature demodulation
2nd i.f. (5,5 MHz signal)
• 8-stage limiter amplifier
• Quadrature demodulator
• A.F. amplifier with de-emphasis
• AV switch
QUICK REFERENCE DATA
Supply voltage (pin 15)
VP = V15-16
IP = I15
typ.
typ.
typ.
typ.
typ.
typ.
12
V
Supply current (pin 15)
57
mA
µV
mV
mV
dB
Minimum i.f. vision carrier input voltage (r.m.s. value)
Output voltage; 5,5 MHz (r.m.s. value)
Output voltage; 5,742 MHz (r.m.s. value)
I.F. control range
VVC1-18 (rms)
V14-16(rms)
V14-16(rms)
∆Gv
150
100
45
64
Signal-to-weighted-noise ratio (rel. to 1 kHz; 30 kHz deviation)
at 5,5 MHz
S + W/W
typ.
58
dB
for 2T/20T pulses with white bars
at 5,742 MHz
S + W/W
typ.
typ.
56
dB
V
A.F. output voltage (r.m.s. value)
Vo6-16(rms)
0,6
PACKAGE OUTLINES
18-lead DIL; plastic (SOT 102); SOT102-1; 1996 November 19.
February 1985
2
Philips Semiconductors
Product specification
Quasi-split-sound circuit
with 5,5 MHz demodulation
TDA2546A
February 1985
3
Philips Semiconductors
Product specification
Quasi-split-sound circuit
with 5,5 MHz demodulation
TDA2546A
RATINGS
Limiting values in accordance with the Absolute Maximum System (IEC 134)
Supply voltage (pin 15)
VP = V15-16
max. 13,2
max. 7
V
Input current (pin 4)
I4
mA
Storage temperature range
Operating ambient temperature range
Tstg
Tamb
−25 to +150 °C
0 to +70 °C
February 1985
4
Philips Semiconductors
Product specification
Quasi-split-sound circuit
with 5,5 MHz demodulation
TDA2546A
CHARACTERISTICS
VP = V15-16 = 12 V; Tamb = 25 °C; measured at fVC = 38,9 MHz, fSC1 = 33,4 MHz, fSC2 = 33,158 MHz:
Vision carrier (V.C.) modulated with different video signals (see below); modulation depth 100% (proportional to 10%
residual carrier).
Vision carrier amplitude (r.m.s. value) is VVC = 10 mV.
Vision-to-sound carrier ratios are VC/SC1 = 13 dB and VC/SC2 = 20 dB.
Sound carriers (SC1, SC2) modulated with f = 1 kHz and deviation ∆f = ± 30 kHz.
For measuring circuit see Fig.2; unless otherwise specified.
PARAMETER
SYMBOL
MIN.
TYP.
MAX.
UNIT
Supply (pin 15)
Supply voltage
Supply current
VP = V15-16
10,8
12
13,2
V
IP = I15
40
57
75
mA
I.F. amplifier
Input voltage for start of gain control
(intercarrier signals −3 dB)
Input voltage for end of gain control
(intercarrier signals + 1 dB)
I.F. gain control range
VVC1-18(rms)
−
150
200
µV
VVC1-18 (rms)
∆Gv
100
60
4
250
64
−
mV
dB
V
−
Control voltage range (see Fig.3)
Input resistance
V3-16
−
Vp
−
R1-18
−
2,5
1,5
kΩ
pF
Input capacitance
C1-18
−
−
Intercarrier generation
Output voltage; 5,5 MHz (r.m.s. value)
Output voltage; 5,742 MHz (r.m.s. value)
D.C. output voltage
V14-16(rms)
V14-16(rms)
V14-16
60
27
−
100
45
5,9
−
140
63
−
mV
mV
V
Allowable d.c. load resistance at the output
Allowable output current
R14-16
7
−
V
−I14
−
−
1
mA
Frequency demodulator (measured at f = 5,5 MHz)
Input voltage vor start of limiting (r.m.s. value)
Maximum input voltage (r.m.s. value)
D.C. output voltage
V12-16(rms)
V12-16 (rms)
V11,12,13-16
V6-16(rms)
v6-16
−
−
100
−
µV
mV
V
−
200
2,2
600
4
−
−
A.F. output voltage (r.m.s. value)
D.C. output voltage
450
−
810
−
mV
V
Allowable d.c. load resistance at the output
Allowable a.c. load impedance at the output
Total harmonic distortion
R6-16
27
10
−
−
−
kΩ
kΩ
%
Z6-16
−
−
THD
−
1
Internal de-emphasis resistance
Switching voltage (pin 4)
Ri5-16
−
1
−
kΩ
for mute
V4-16
V4-16
9
−
−
−
V
V
for a.f. on
−
2,5
February 1985
5
Philips Semiconductors
Product specification
Quasi-split-sound circuit
with 5,5 MHz demodulation
TDA2546A
PARAMETER
SYMBOL
MIN.
TYP.
MAX.
UNIT
Intercarrier signal-to-noise
(measured behind the FM demodulators)
Signal-to-weighted-noise ratio according to
CCIR 468-2, quasi-peak 2T/20T pulses with white
bars (see also Fig.4)
at 5,5 MHz
at 5,742 MHz
6 kHz sine wave
at 5,5 MHz
S+W/W
53
51
58
−
−
dB
S+W/W
56
dB
S+W/W
S+W/W
50
50
53
53
−
−
dB
dB
at 5,742 MHz
with black level (vision carrier modulated with sync
pulses only)
at 5,5 MHz
S+W/W
S+W/W
60
58
65
63
−
−
dB
dB
at 5,742 MHz
Notes to the characteristics
1. Incidential phase on the vision carrier, caused by TV-transmitter, has to be less than 0,5 degrees for black to white
transient.
(Equivalent to S+W/W = 56 dB for 6 kHz sine wave).
February 1985
6
Philips Semiconductors
Product specification
Quasi-split-sound circuit
with 5,5 MHz demodulation
TDA2546A
(1) I.F. signal: vision carrier (V.C.) and sound carrier (S.C.)
Fig.2 Measuring circuit for TDA2546A.
Fig.3 Control voltage at pin 3 as a function of the input voltage VVC1-18(rms).
February 1985
7
Philips Semiconductors
Product specification
Quasi-split-sound circuit
with 5,5 MHz demodulation
TDA2546A
Fig.4 Signal-to-weighted-noise ratio depending on video modulation.
February 1985
8
Philips Semiconductors
Product specification
Quasi-split-sound circuit
with 5,5 MHz demodulation
TDA2546A
PACKAGE OUTLINE
DIP18: plastic dual in-line package; 18 leads (300 mil)
SOT102-1
D
M
E
A
2
A
A
1
L
c
e
w M
Z
b
1
(e )
1
b
b
2
18
10
M
H
pin 1 index
E
1
9
0
5
10 mm
scale
DIMENSIONS (inch dimensions are derived from the original mm dimensions)
(1)
Z
A
A
A
2
(1)
(1)
1
w
UNIT
mm
b
b
b
c
D
E
e
e
L
M
M
H
1
2
1
E
max.
min.
max.
max.
1.40
1.14
0.53
0.38
1.40
1.14
0.32
0.23
21.8
21.4
6.48
6.20
3.9
3.4
8.25
7.80
9.5
8.3
4.7
0.51
3.7
2.54
0.10
7.62
0.30
0.254
0.01
0.85
0.055 0.021 0.055 0.013
0.044 0.015 0.044 0.009
0.86
0.84
0.26
0.24
0.15
0.13
0.32
0.31
0.37
0.33
inches
0.19
0.020
0.15
0.033
Note
1. Plastic or metal protrusions of 0.25 mm maximum per side are not included.
REFERENCES
OUTLINE
EUROPEAN
PROJECTION
ISSUE DATE
VERSION
IEC
JEDEC
EIAJ
93-10-14
95-01-23
SOT102-1
February 1985
9
Philips Semiconductors
Product specification
Quasi-split-sound circuit
with 5,5 MHz demodulation
TDA2546A
SOLDERING
Introduction
There is no soldering method that is ideal for all IC packages. Wave soldering is often preferred when through-hole and
surface mounted components are mixed on one printed-circuit board. However, wave soldering is not always suitable for
surface mounted ICs, or for printed-circuits with high population densities. In these situations reflow soldering is often
used.
This text gives a very brief insight to a complex technology. A more in-depth account of soldering ICs can be found in our
“IC Package Databook” (order code 9398 652 90011).
Soldering by dipping or by wave
The maximum permissible temperature of the solder is 260 °C; solder at this temperature must not be in contact with the
joint for more than 5 seconds. The total contact time of successive solder waves must not exceed 5 seconds.
The device may be mounted up to the seating plane, but the temperature of the plastic body must not exceed the
specified maximum storage temperature (Tstg max). If the printed-circuit board has been pre-heated, forced cooling may
be necessary immediately after soldering to keep the temperature within the permissible limit.
Repairing soldered joints
Apply a low voltage soldering iron (less than 24 V) to the lead(s) of the package, below the seating plane or not more
than 2 mm above it. If the temperature of the soldering iron bit is less than 300 °C it may remain in contact for up to
10 seconds. If the bit temperature is between 300 and 400 °C, contact may be up to 5 seconds.
DEFINITIONS
Data sheet status
Objective specification
Preliminary specification
Product specification
This data sheet contains target or goal specifications for product development.
This data sheet contains preliminary data; supplementary data may be published later.
This data sheet contains final product specifications.
Limiting values
Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one or
more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation
of the device at these or at any other conditions above those given in the Characteristics sections of the specification
is not implied. Exposure to limiting values for extended periods may affect device reliability.
Application information
Where application information is given, it is advisory and does not form part of the specification.
LIFE SUPPORT APPLICATIONS
These products are not designed for use in life support appliances, devices, or systems where malfunction of these
products can reasonably be expected to result in personal injury. Philips customers using or selling these products for
use in such applications do so at their own risk and agree to fully indemnify Philips for any damages resulting from such
improper use or sale.
February 1985
10
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