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TOSHIBA SURFACE ACOUSTIC WAVE FILTER
F045LSL
· APPLICATION ………………………………TV-IF FILTER
· SYSTEM ……………………………………………………I
· CARRIER FREQUENCY ……………………… 39.5 MHz
ELECTRICAL CHARACTERISTICS
· LiNbO3 (Lithium tantalum)
Parameters
Insertion Loss
Conditions
Min. Typical Max. Unit
fp-1.5 (38.0 MHz) –
17.1 –
dB
PACKAGE DIMENSION
Unit : mm
fp-8 (31.5 MHz) –
– –38
dB
fp-6 (33.5 MHz) –23.5 –22.0 –20.5 dB
16.3 MAX
6.3 MAX
fp-4.43 (35.07 MHz) –3.3 –2.3 –1.3 dB
Relative
fp-1.5 (38.0 MHz) –
0 – dB
level**
Outband
fp (39.5
fp+2 (41.5
25.0 to 31.5
MHz)
MHz)
MHz
–6.0
–5.0 –4.0
– –42
– –32
dB
dB
dB
#1 #2 #3 #4 #5
ø 0.52 ± 0.05
Rejection
41.5 to 45.0
MHz –
– –30
4.2 ± 0.2
Amplitude ripple within pass band (p-p)
Group
fp-4.43 (35.07 MHz)
0.2 0.7 dB
15 – ns
2.5 ± 0.5 pitch
Delay**
fp-2 (37.5 MHz) – 0 – ns
fp (39.5 MHz) – 0 – ns
Ripple (p-p)
37.47 to 38.9
MHz –
30
Temperature Coefficient of Frequency Response
– –72
70 ns
– ppm/˚C
#1 #2 #3 #4 #5
Input
impedance***
Output
Ri
Ci
Ro
(37.4
(1
(37.4
MHz)
MHz)
MHz)
––
9.4 –
––
k
pF
k
16.3MAX
***impedance
Co
( 1 MHz) –
2.4 –
pF
*
**
***
The reference is fp-1.5 level.
Relative value to fp point.
Impedance equivalent circuits is shown on the right hand side.
PIN CONNECTIONS
Pin No.
#1. INPUT
* MEASLIREMENT CIRCUIT
+12 V
2.2 k 100 n
10
100 n
560
10
270 100 n
100 n 100 µ
470
1.2 k
BF241
91
270 p
2.7 k
1n
47 1 n
BF959
47 1 n
BF959
220 BF959 270 p
91 4 : 2
270
Output
10 n
Input 47 1 n
1n
BF959
390
47
120
1.2 k
BF241
2.7 k
56
#2. INPUT
#3. GROUND
#4. OUTPUT
#5. OUTPUT
EQUIVALENT CIRCUIT
10 p
20 3.3 k
100 n
22 p 39 15 p
FREQUENCY CHARACTERISTICS
INPUT Ci Ri Ro Co OUTPUT
( 10dB / div )
( 1dB / div )
( 100ns / div )
26 28
30 32 34 36 38 40 42 44
FREQUENCY ( MHz )
46
31 32 33 34 35 36 37 38 39 40 41
FREQUENCY ( MHz )
* 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.
* The information contained herein may be changed without prior notice. It is therefore advisable to contact TOSHIBA before proceeding
with the design of equipment incorporating this product.
No. TE - F045LSL
1998-07-01