b39570-x6948-n201 EPCOS AG, b39570-x6948-n201 Datasheet - Page 3

• Manufacturer Part Number: b39570-x6948-n201
• Description: Saw Bandpass Filter
• Manufacturer: EPCOS AG

Matching network
Data Sheet
Characteristics
Reference temperature:
Terminating source impedance:
Terminating load impedance:
1.5 s ... 6.0 s after main pulse
Please read cautions and warnings and
important notes at the end of this document.
Insertion attenuation
Reference level for
the following data
Amplitude ripple (p-p)
Relative attenuation
Lower sidelobe
Upper sidelobe
Reflected wave signal suppression
(test pulse 250 ns,
carrier frequency 57.02 MHz)
Group delay ripple (p-p)
Impedance at 57.02 MHz
Temperature coefficient of frequency
SAW Components
SAW bandpass filter
54.52 ... 59.02 (54.50 ... 59.00) MHz
45.02 ... 50.02 (45.00 ... 50.00) MHz
50.02 ... 52.77 (50.00 ... 52.75) MHz
62.40 ... 70.02 (62.38 ... 70.00) MHz
54.52 ... 59.02 (54.50 ... 59.00) MHz
Input:
Output: Z
Z
IN
OUT
57.02 (57.00) MHz
52.77 (52.75) MHz
54.12 (54.10) MHz
59.52 (59.50) MHz
60.27 (60.25) MHz
62.40 (62.38) MHz
64.77 (64.75) MHz
= R
= R
IN
OUT
|| C
|| C
IN
OUT
TC
rel
T
Z
Z
A
S
L
f
3
= 25 (45) ˚C
= 50
= 2 k ||3pF and matching network
Aug 20, 2007
min.
17.7
36.0
32.0
37.0
38.0
37.0
34.0
34.0
42.0
—
—
—
—
—
0.7
1.5
@ 25 ˚C
2.0||17.6
5.2|| 4.6
–18
typ.
19.2
42.0
40.0
47.0
45.0
42.0
39.0
39.0
52.0
40
0.5
2.2
3.0
L
max.
p1
20.7
—
—
—
—
—
—
—
—
—
—
—
—
—
3.7
4.5
= 820 nH
57.00 MHz
X 6948 D
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
ns
k || pF
k || pF
ppm/K