SAW multimedia filters
Series/Type:
G1985M
The following products presented in this data sheet are being withdrawn.
Ordering Code
B39389G1985M100
Substitute Product
Date of Withdrawal
2011-01-14
Deadline Last
Orders
2011-09-30
Last Shipments
2012-09-30
For further information please contact your nearest EPCOS sales office, which will also support you in selecting a
suitable substitute. The addresses of our worldwide sales network are presented at www.epcos.com/sales.
EPCOS AG 2015. Reproduction, publication and dissemination of this publication, enclosures hereto and the information
contained therein without EPCOS' prior express consent is prohibited.
EPCOS AG is a TDK Group Company.
SAW Components
IF Filter for Intercarrier Applications
Data Sheet
Standard
s
B/G
G 1985 M
38,90 MHz
Plastic package
SIP5K
Features
s
TV IF filter with Nyquist slope and sound shelf
s
High color carrier level
s
Reduced group delay predistortion as compared
with standard B/G, half
s
Extended sound shelf for NICAM reception
s
Suitable for CENELEC EN 55020
Terminals
s
Tinned CuFe alloy
Dimensions in mm, approx. weight 1,0 g
Pin configuration
1
2
3
4
5
Input
Input - ground
Chip carrier - ground
Output
Output
Type
G 1985 M
Ordering code
B39389-G1985-M100
Marking and package
according to
C61157-A1-A15
Packing
according to
F61074-V8067-Z000
Maximum ratings
Operable temperature range
Storage temperature range
DC voltage
AC voltage
T
A
T
stg
V
DC
V
pp
–25/+65
–40/+85
5
10
˚C
˚C
V
V
between any terminals
between any terminals
2
Mar 31, 2006
SAW Components
IF Filter for Intercarrier Applications
Data Sheet
Characteristics
Reference temperature:
Terminating source impedance:
Terminating load impedance:
G 1985 M
38,90 MHz
T
A
= 25 ˚C
Z
S
= 50
Ω
Z
L
= 2 kΩ || 3 pF
min.
typ.
13,1
max.
14,6
dB
Insertion attenuation
Reference level for the
following data
Relative attenuation
Picture carrier
Color carrier
Sound carrier
NICAM sound carrier
Adjacent picture carrier
α
37,40 MHz
α
rel
38,90
34,47
33,40
33,05
30,90
31,40
31,90
32,40
40,15
40,40
41,40
25,00 ... 31,90
40,40 ... 45,00
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
5,2
-0,8
12,9
—
49,0
50,0
50,0
36,0
44,0
50,0
47,0
43,0
44,0
42,0
6,2
0,2
14,4
14,5
56,0
60,0
63,0
43,0
56,0
60,0
60,0
48,0
50,0
52,0
7,2
1,2
15,9
—
—
—
—
—
—
—
—
—
—
—
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
11,6
Adjacent sound carrier
Adjacent sound carrier
Lower sidelobe
Upper sidelobe
Reflected wave signal suppression
1,2
µs
... 6,0
µs
after main pulse
(test pulse 250 ns,
carrier frequency 37,40 MHz)
Feedthrough signal suppression
1,2
µs
... 1,1
µs
before main pulse
(test pulse 250 ns,
carrier frequency 37,40 MHz)
Group delay predistortion
(reference frequency 38,90 MHz)
36,90 MHz
34,47 MHz
Impedance
at 37,40 MHz
Input:
Z
IN
=
R
IN
||
C
IN
Output:
Z
OUT
=
R
OUT
||
C
OUT
Temperature coefficient of frequency
∆τ
50,0
56,0
—
dB
—
—
—
—
–90
70
1,3 ||18,4
1,9 || 4,2
–72
—
—
—
—
—
ns
ns
kΩ || pF
kΩ || pF
ppm/K
TC
f
—
3
Mar 31, 2006
SAW Components
IF Filter for Intercarrier Applications
Data Sheet
Frequency response
G 1985 M
38,90 MHz
4
Mar 31, 2006
SAW Components
IF Filter for Intercarrier Applications
Data Sheet
Frequency response
G 1985 M
38,90 MHz
Time domain response
5
Mar 31, 2006
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