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TFS 238a.doc
version 1.1
10.04.2003
VI TELEFILTER
Measurement condition
Ambient temperature TA: Input power level: Terminating impedances at fc*:
Preliminary Specification
TFS 238 A
1/5
25 C 0 dBm input: 1000 output: 670
// - 7,2 pF // - 7,8 pF
Characteristics
Remark: Reference level for the relative attenuation arel of the TFS 238A is the insertion loss. The minimum of the pass band attenuation amin is defined as the insertion loss ae . The centre frequency fc is the arithmetic mean value of the upper and lower frequencies at the 3 dB filter attenuation level relative to the insertion loss ae. The temperature coefficient of frequency Tcf is valid both for the reference frequency fc and the frequency response of the filter in the operating temperature range.
Data Insertion loss ae (reference level at ambient temperature) Nominal frequency Centre frequency Passband Ripple (p-p) Relative attenuation fN ......... fN 0,5 MHz ......... fN fN fN fN + 0,9 1,25 4 4 MHz MHz MHz MHz ......... ......... ......... ......... fN fN fN fN fN fN fN fN fc 500 kHz arel 0,5 MHz 0,615 MHz MHz MHz MHz MHz
typ. value 9,5 238,4 0,4 MHz dB dB
tolerance / limit min. max. 8,9 dB 10,9 dB 238,4 MHz max. 1 dB
0,4 1 25 35 55 60 1,2
dB dB dB dB dB dB deg rms
max. max. min. min. min. min. max.
1 5 20 30 47 47 4
dB dB dB dB dB dB deg rms
1,25 4 - 228,4 + 111,6
Phase variation within fN
630 kHz
Triple transit response suppression Operating temperature range Storage temperature range Temperature coefficient of frequency Frequency inversion temperature Input power
TCf ***
27 -
dB
min.
20
dB C C -
- 20 C.... + 85 - 55 C.... + 125
2
-0,036 ppm/K 35 C
-
T0
max.
20
dBm **
*) The terminating impedances depend on parasitics and q-values of matching elements and the board used, and are to be understood as
reference values only. Should there be additional questions do not hesitate to ask for an application note or contact our design team. **) This power level is allowed for short term operation (10% of life time) only, the max. input power for continuous operation is 15 dBm ***) f(Hz) = TCf(ppm/K) x (T-T0) x fTo(MHz)
generated:
checked / approved:
TELEFILTER GmbH Potsdamer Strae 18 D 14 513 TELTOW / Germany Tel: (+49) 3328 4784-0 / Fax: (+49) 3328 4784-30 E-Mail: tft@telefilter.com
VI TELEFILTER reserves the right to make changes to the product(s) and/or information contained herein without notice. No liability is assumed as a result of their use or application. No rights under any patent accompany the sale of any such product(s) or information
TFS 238a.doc
version 1.1
10.04.2003
VI TELEFILTER
Preliminary Specification
- matching network
TFS 238 A
2/5
Construction, pin configuration and 50
(all dimensions in mm)
10 9
15,32 0,20
8
7
6
TFS 238 A R16
1 2 3 4 5
1,0 0,2
date code
6,50 0,20
1 2 3 4 5 6 7 8 9 10
output ground ground ground input rf return input ground ground ground output rf return
2,0Max.
1 120
date code: year + week N 2001 P 2002 R 2003 ......
1,9 0,2 1,91 7,62 0,2 0,2
50
test circuit
L1 Input 50 Ohm C1
6
1
L2 Output 50 Ohm C2
SAW
2,3,4,5,7,8,9,10
TELEFILTER GmbH Potsdamer Strae 18 D 14 513 TELTOW / Germany Tel: (+49) 3328 4784-0 / Fax: (+49) 3328 4784-30 E-Mail: tft@telefilter.com
VI TELEFILTER reserves the right to make changes to the product(s) and/or information contained herein without notice. No liability is assumed as a result of their use or application. No rights under any patent accompany the sale of any such product(s) or information
TFS 238a.doc
version 1.1
10.04.2003
VI TELEFILTER
Stability characteristics
Preliminary Specification
TFS 238 A
3/5
After the following tests the filter shall meet the whole specification: 1. Shock: 2. Vibration: 3. Change of temperature: 4. Resistance to solder heat (reflow): 500g, 18 ms, half sine wave, 3 shocks each plane; DIN IEC 68 T2 - 27 10 Hz to 500 Hz, 0,35 mm or 5g respectively, 1 octave per min, 10 cycles per plan, 3 plans; DIN IEC 68 T2 - 6 -55 C to 125C / 30 min. each / 10 cycles DIN IEC 68 part 2 14 Test N reflow possible: twice max.; for temperature conditions, please refer to the attached "Air reflow temperature conditions" on page 4;
Packing
Tape & Reel: DIN IEC 286 3, with exception of value for N and minimum bending radius; tape type II, embossed carrier tape with top cover tape on the upper side; max. pieces of filters per reel: reel of empty components at start: reel of empty components at start including leader: trailer 2000 min 300 mm min 500 mm min 300 mm
Tape (all dimensions in mm) W Po Do E F : : : : : 24 4 0,3 0,1
Do Po
EMBOSSED CARRIER TAPE
P2
1,5 + 0,1 1,75 0,1 11,5 0,1 0,60 2 12 1,5 7,1 15,9 21,5 0,1 0,1 0,2 0,2 0,1
P1 Ct Bo Ao D1
E
G (min) : P2 : P1 : D1(min) : Ao Bo Ct : : :
F W
G
COVER TAPE
W2
Reel (all dimensions in mm): A : 330 24,40 +2,0 30,4 60 13 0,5/-0.2
A C N
W1 : W2 (max) : N (min) C : :
W1
The minimum bending radius is 45 mm. The mounting surface of the filters faces the bottom side of the embossed carrier tape. Markings on the filters can be read if the upper side of the carrier tape is regarded with the sprocket holes on its right.
TELEFILTER GmbH Potsdamer Strae 18 D 14 513 TELTOW / Germany Tel: (+49) 3328 4784-0 / Fax: (+49) 3328 4784-30 E-Mail: tft@telefilter.com
VI TELEFILTER reserves the right to make changes to the product(s) and/or information contained herein without notice. No liability is assumed as a result of their use or application. No rights under any patent accompany the sale of any such product(s) or information
TFS 238a.doc
version 1.1
10.04.2003
VI TELEFILTER
Air reflow temperature conditions
Preliminary Specification
TFS 238 A
4/5
1st and 2nd air reflow profile Name: Temperature: Time: pre-heating periods 150 C - 170 main-heating periods Cover 200 C 60 sec. - 90 sec. peak temperature 255 C 5 C 20 sec. - 25 sec.
Air reflow profile
260 240 220 200 180 temperature / C 160 140 120 100 80 60 40 20 0 0 20 40 60 80 100 120 time / sec. Table for temperature vs. time during the air reflow process Tolerance of temperatures: 5 C time / sec. 0 10 20 30 40 50 60 70 80 90 100 110 120 130 temperature / C 23 34 46 60 80 103 121 134 143 150 154 156 158 159 time / sec. 140 150 160 170 180 190 195 200 205 210 215 220 230 240 temperature / C 160 161 164 170 180 205 230 255 230 205 180 165 140 120 140 160 180 200 220 240
TELEFILTER GmbH Potsdamer Strae 18 D 14 513 TELTOW / Germany Tel: (+49) 3328 4784-0 / Fax: (+49) 3328 4784-30 E-Mail: tft@telefilter.com
VI TELEFILTER reserves the right to make changes to the product(s) and/or information contained herein without notice. No liability is assumed as a result of their use or application. No rights under any patent accompany the sale of any such product(s) or information
TFS 238a.doc
version 1.1
10.04.2003
VI TELEFILTER
History Version
1.0 1.1
Preliminary Specification
TFS 238 A
5/5
Reason of Changes
generation of specification
Name
Pfeiffer
Date
10.02.2003 Pfeiffer
typical values of relative attenuation and terminating impedance (preliminary values) added 10.04.2003
TELEFILTER GmbH Potsdamer Strae 18 D 14 513 TELTOW / Germany Tel: (+49) 3328 4784-0 / Fax: (+49) 3328 4784-30 E-Mail: tft@telefilter.com
VI TELEFILTER reserves the right to make changes to the product(s) and/or information contained herein without notice. No liability is assumed as a result of their use or application. No rights under any patent accompany the sale of any such product(s) or information

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