JRC NSVA278 User manual

NSVA278 Oct. 2004
Application
Cordless telephone
Electrical Specification: (Table 1)
The device characteristics are measured in the circuit shown in Fig.1.
Maximum Rating: (Table 2)
Mechanical Specifications: (Fig.2)
Package is designed as small as 3.5x3.5x1.0[mm3] for SMD (Surface Mount Device) type.
Notice:
This part is electrostatic discharge sensitive and may be damaged by improper handling.
Table 1. Electrical Specifications
Item Spec. Typ.
Input and Output Impedance - 50Ω
Nominal Center Frequency (f0) - 903MHz
Insertion Loss 901.8~904.2MHz 3.5dB max. 2.5dB
Response Variation 901.8~904.2MHz 1.5dB max. 0.5dB
Input and Output VSWR 901.8~904.2MHz 2.5 max. 1.8
DC ~<823MHz 55dB min. 60dB min.
823~861MHz 45dB min. 50dB min.
926~928MHz 20dB min. 25dB min.
945~963MHz 30dB min. 32dB min.
Out of Band Rejection
(Relative to
Through Level)
<963~1500MHz 55dB min. 60dB min.
(Operating Temperature Range: -10~+60ºC)
Table 2. Maximum Ratings
Item Rating
Maximum Input Power +20dBm
Maximum DC Voltage 7.5V
Operating Temperature Range -10~+60ºC
Storage Temperature -20~+70ºC
JRC SAW FILTER
NSVA278
Communications and Device Group
Communications Equipment Marketing Department
10-1, Nishi-Shinjuku 6-chome, Shinjuku-ku,
Tokyo, 160-8328 Japan
Tel. [phone]
Fax. [phone]
http://www.jrc.co.jp/jp/product/device/saw/index.html (Japanese)
http://www.jrc.co.jp/eng/product/saw/index.html (English)

NSVA278 Oct. 2004
Marking
(1) Manufacture’s Mark
(2) Lot Number
(a) Year
(b) Month
*Oct.--- X
Nov.--- Y
Dec.--- Z
(3) Part number Mark
Pin no. Connection
1 GND
2 IN/OUT
3 GND
4 GND
5 GND
6 OUT/IN
7 GND
8 GND
3.5±0.2
3.5±0.2
1.0±0.2
(0.95) (0.8)
[5x]
(2.54)
(1.27)
(0.6)
[8x]
(0.6)
2
3
4
5
6
7
8
1
(1.0)
(3)
(2)
(b)
(a)
(1)
[2x]
Fig.1 Measuring circuit
Fig.2 Package dimensions (in mm)
Fig.3 Desirable land area (in mm)
J4X
03
1
2
345
6
7
8
SAW
IN
50ΩOUT
50Ω
Via-Hole(
Φ
0.3)
1.27
1.27
1.3 0.8
4.3
4.3
0.8
[6x]
[6x]

NSVA278 Oct. 2004
Notice
1. Use this component within operating temperature range. It might not be
satisfied with electrical specification without operating temperature range.
When it is used less than -10ºC or more than +60ºC, it might be a cause of
degradation or destruction of the component. Even if it endures during a short
time, it causes degradation of qualification.
2. When soldering iron is used, solder with the temperature at the tip of soldering
iron: 350ºC max., the time of soldering: 10 seconds max., the power of
soldering iron: 30W max..
3. Notice that the allowed time of soldering with soldering iron is accumulated
time, when soldering is repeated.
4. As rapid temperature change for cleaning after reflow soldering might be a
cause of destruction clean this component after confirming that temperature of
this component goes down to room temperature.
5. Confirm that there are not any influence for qualification to this component in
mounting on PCB when this component is cleaned.
6. As it might be a cause of degradation of destruction to apply static electricity to
this component, do not apply static electricity or excessive voltage while
assembling and measuring. And do not transport this component with bare
hand.
7. As it might be a cause of degradation or destruction to apply D.C. voltage
between each terminal, apply D.C. voltage 7.5V max. in actual circuit.
Note
1. This specification specifies the quality of this component as a single unit. Make
sure that this component is evaluated and confirmed against this specification
when it is mounted to your products.
2. The information contained herein may be changed without prior notice. It is
therefore advisable to contact Japan Radio Company before proceeding with
the design of equipment incorporating this product.
3. The products are designed to be used with ordinary electronic equipment (data
and communications equipment, office equipment, audio-video equipment,
measuring instruments, etc). Japan Radio Company does not assume any
liability for the case using the products with the application required high
reliability or safety extremely (such as space equipment, sea-bottom equipment,
medical equipment etc). When intending to use any our product please
contact our sales representatives in advance.

0
20
40
60
80
100
S21
Insertion Loss [dB]
0
2
4
6
8
10
CH1 : center 903 span 200
CH2 : center 903 span 200
Insertion Loss [dB]
FREQUENCY CHARACTERISTICS
NSVA278 Oct. 2004
S11 S22
S11 S22
1 1
3 3
5 5
7 7
9 9
11 11
803 8031003 1003
Frequency [MHz] Frequency [MHz]
VSWR VSWR
InsertionLoss [dB]
0
20
40
60
80
100
0.3 3000
S21
Frequency [MHz]
NSVS971 Dec-04
Fig.1 Measuring circuit
13.30±0.20
6.5±0.20
(R0.3)
[4×]
(0.76)
(2.54)
(1.4)
(0.8)
[12×]
(2.54±0.15)
Pin No. Connection
1GND(PKG)
2GND(PKG)
3 GND(PKG)
4GND(PKG)
5OUT/IN
6 GND(signal)
7GND(PKG)
8GND(PKG)
9GND(PKG)
10 GND(PKG)
11 IN/OUT
12 GND(signal)
2.0 max.
(1)
(a) (b)
(3)
Marking
(1) Manufacture's Mark
(2) Lot Number
(a) Year
(b) Month
*Oct.--- X
Nov.--- Y
Dec.--- Z
(c) Date
1-9--- 0
10-19--- 1
20-31--- 2
(3) Part Number Mark
(1.26±0.13)
[12×]
[12×]
(2.54)
(R0.3)
(2.54±0.15)
(2)
12345
6
7
8
910
11
12
(C)
Fig.2 Package dimensions(in mm)
J4Y1
VS971
１２３４
10
９８７
11
12
６
５
OUT
50O
IN
50O
SAW
*27nH
*27nH
39pF
33pF
*murata LQW18A series