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Электронный компонент: K7257M

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SAW Components
Data Sheet K 7257 M
2
Jan 27, 2003
SAW Components
K 7257 M
33,90 MHz and 38,90 MHz
IF Filter for Video / Multistandard Applications
Data Sheet
Plastic package SIP5K
Standard
s
B/G
s
L/L'
s
M/N
Features
s
TV IF filter switchable from B/G,L/L' mode to
M/N mode
s
B/G,L/L' mode with Nyquist slope and sound
suppression
s
Highly reduced group delay predistortion as
compared to standard B/G, half
s
M/N mode with Nyquist slope and sound sup-
pression
s
Constant group delay
Terminals
s
Tinned CuFe alloy
Dimensions in mm, approx. weight 1,0 g
Pin configuration
1
Input
2
Switching input
3
Chip carrier ground
4, 5
Output
Type
Ordering code
Marking and package
according to
Packing
according to
K 7257 M
B39389-K7257-M100
C61157-A1-A15
F61074-V8067-Z000
Maximum ratings
Operable temperature range
T
A
25/+65
C
Storage temperature range
T
stg
40/+85
C
DC voltage
V
DC
5
V
between any terminals
AC voltage
V
pp
10
V
between any terminals
1
2
3
5
4
3
Jan 27, 2003
SAW Components
K 7257 M
33,90 MHz and 38,90 MHz
IF Filter for Video / Multistandard Applications
Data Sheet
Characteristics in B/G, L/L' mode (switching input pin 2 connected to ground)
Reference temperature:
T
A
= 25 C
Terminating source impedance:
Z
S
= 50
Terminating load impedance:
Z
L
= 2 k
|| 3 pF
min.
typ.
max.
Insertion attenuation
Reference level for the
37,40 MHz
15,1
16,6
18,1
dB
following data
Relative attenuation
rel
Picture carrier
38,90 MHz
5,0
6,0
7,0
dB
Picture carrier
33,90 MHz
--
7,9
--
dB
Color carrier
34,47 MHz
-0,5
0,5
1,5
dB
Sound carrier
33,40 MHz
28,0
43,0
--
dB
NICAM sound carrier
33,05 MHz
--
36,0
--
dB
Adjacent picture carrier
30,90 MHz
45,0
60,0
--
dB
31,90 MHz
47,0
60,0
--
dB
32,40 MHz
45,0
60,0
--
dB
40,15 MHz
39,0
52,0
--
dB
Adjacent sound carrier
40,40 MHz
40,0
53,0
--
dB
41,40 MHz
40,0
50,0
--
dB
Lower sidelobe
25,00 ... 31,90 MHz
40,0
46,0
--
dB
Upper sidelobe
40,40 ... 45,00 MHz
36,0
43,0
--
dB
Reflected wave signal suppression
1,2
s ... 6,0
s after main pulse
42,0
52,0
--
dB
(test pulse 250 ns,
carrier frequency 37,40 MHz)
Feedthrough signal suppression
1,3
s ... 1,2
s before main pulse
50,0
56,0
--
dB
(test pulse 250 ns,
carrier frequency 37,40 MHz)
Group delay predistortion
ns
(reference frequency 38,90 MHz)
36,90 MHz
--
50
--
ns
34,47 MHz
--
50
--
ns
Impedance at 37,40 MHz
Input:
Z
IN
=
R
IN
||
C
IN
--
1,2 ||18,6
--
k
|| pF
Output:
Z
OUT
=
R
OUT
||
C
OUT
--
1,8 || 4,2
--
k
|| pF
Temperature coefficient of frequency
TC
f
--
72
--
ppm/K
4
Jan 27, 2003
SAW Components
K 7257 M
33,90 MHz and 38,90 MHz
IF Filter for Video / Multistandard Applications
Data Sheet
Characteristics in M/N mode (switching input pin 2 connected to pin 1)
Reference temperature:
T
A
= 25 C
Terminating source impedance:
Z
S
= 50
Terminating load impedance:
Z
L
= 2 k
|| 3 pF
min.
typ.
max.
Insertion attenuation
Reference level for the
37,40 MHz
14,8
16,3
17,8
dB
following data
Relative attenuation
rel
Picture carrier
38,90 MHz
5,4
6,4
7,4
dB
Color carrier
35,32 MHz
1,6
2,6
3,6
Sound carrier
34,40 MHz
28,0
39,0
--
dB
Adjacent picture carrier
32,90 MHz
37,0
45,0
--
dB
Adjacent sound carrier
40,40 MHz
40,0
48,0
--
dB
Lower sidelobe
25,00 ... 32,90 MHz
36,0
44,0
--
dB
Upper sidelobe
40,40 ... 45,00 MHz
32,0
38,0
--
dB
Reflected wave signal suppression
1,3
s ... 6,0
s after main pulse
42,0
52,0
--
dB
(test pulse 250 ns,
carrier frequency 37,40 MHz)
Feedthrough signal suppression
1,3
s ... 1,2
s before main pulse
--
50,0
--
dB
(test pulse 250 ns,
carrier frequency 37,40 MHz)
Group delay ripple (p-p)
35,32 ... 38,90 MHz
--
50
--
ns
Impedance at 37,40 MHz
Input:
Z
IN
=
R
IN
||
C
IN
--
1,3 ||19,5
--
k
|| pF
Output:
Z
OUT
=
R
OUT
||
C
OUT
--
1,8 || 4,2
--
k
|| pF
Temperature coefficient of frequency
TC
f
--
72
--
ppm/K
5
Jan 27, 2003
SAW Components
K 7257 M
33,90 MHz and 38,90 MHz
IF Filter for Video / Multistandard Applications
Data Sheet
Frequency response in B/G, L/L' mode
6
Jan 27, 2003
SAW Components
K 7257 M
33,90 MHz and 38,90 MHz
IF Filter for Video / Multistandard Applications
Data Sheet
Frequency response in B/G, L/L' mode
Time domain response in B/G, L/L' mode
7
Jan 27, 2003
SAW Components
K 7257 M
33,90 MHz and 38,90 MHz
IF Filter for Video / Multistandard Applications
Data Sheet
Frequency response in M/N mode
8
Jan 27, 2003
SAW Components
K 7257 M
33,90 MHz and 38,90 MHz
IF Filter for Video / Multistandard Applications
Data Sheet
Frequency response in M/N mode
Time domain response in M/N mode
9
Jan 27, 2003
SAW Components
K 7257 M
33,90 MHz and 38,90 MHz
IF Filter for Video / Multistandard Applications
Data Sheet
Published by EPCOS AG
Surface Acoustic Wave Components Division, SAW CE MM PD
P.O. Box 80 17 09, 81617 Munich, GERMANY
EPCOS AG 2003. Reproduction, publication and dissemination of this brochure and the informa-
tion contained therein without EPCOS' prior express consent is prohibited.
Purchase orders are subject to the General Conditions for the Supply of Products and Services of
the Electrical and Electronics Industry recommended by the ZVEI (German Electrical and Electronic
Manufacturers' Association), unless otherwise agreed.
This brochure replaces the previous edition.
For questions on technology, prices and delivery please contact the Sales Offices of EPCOS AG or
the international Representatives.
Due to technical requirements components may contain dangerous substances. For information on
the type in question please also contact one of our Sales Offices.