SAW Components
Data Sheet B7721
2Oct 25, 2002
SAW Components B7721
942,5 MHz
Low-Loss Filter for Mobile Communication
Data Sheet
side view
top view
bottom vie
w
0,1
0,1
2,5
2,0 0,8
1
2
3
654
0,5
0,5
Chip sized SAW package DCS6K
Features
■Low-loss RF filter for mobile telephone
EGSM system, receive path
■Low amplitude ripple
■Usable passband 35 MHz
■Unbalanced to balanced operation
■Excellent symmetry
■Impedance transformation from 50 Ω
to 200 Ω
■Suitable for GPRS class 1 to 12
■Ceramic package for Surface Mounted
Technology (SMT)
■Pb-free
Terminals
■Ni, gold-plated
Dimensions in mm
Pin configuration
2 Input, unbalanced
4, 6 Balanced outputs
1, 3, 5 To be grounded
1, 5 Case ground
Electrostatic Sensitive Device (ESD)
Type Ordering code Marking and Package
according to
Packing
according to
B7721 B39941–B7721–C910 C61157-A7-A97 F61074-V8153-Z000
Maximum ratings
Operable temperature range
T
– 25 / + 85 ˚C
Storage temperature range
T
stg – 40 / + 85 ˚C
DC voltage
V
DC 5V
ESD voltage
V
ESD 100 V
Input power at
GSM850, GSM900
GSM1800 and GSM1900
Tx bands
P
IN 15 dBm peakpowerofGSM signal,
duty cycle 4:8
3Oct 25, 2002
SAW Components B7721
942,5 MHz
Low-Loss Filter for Mobile Communication
Data Sheet
Characteristics
Operating temperature range:
T
= 25 ± 2 ˚C
Terminating source impedance:
Z
S= 50 Ω
Terminating load impedance:
Z
L= 200 Ω || 68 nH
min. typ. max.
Center frequency
f
C— 942,5 — MHz
Maximum insertion attenuation αmax
925,0 ... 960,0 MHz — 2,4 2,8 dB
Amplitude ripple (p-p) ∆α
925,0 ... 960,0 MHz — 1,1 1,5 dB
Input VSWR 925,0 ... 960,0 MHz — 2,2 2,4
Output VSWR 925,0 ... 960,0 MHz — 2,0 2,4
Output phase balance φ(S31)−φ(S21)
925,0 ... 960,0 MHz -5 — 5 degree
Output amplitude balance (|S31/S21|)
925,0 ... 960,0 MHz -0,5 — 0,5 dB
Diff. to common mode suppression Ssc12
925,0 ... 960,0 MHz 20 38 — dB
824,0 ... 995,0 MHz 20 29 — dB
1648,0 ... 1990,0 MHz 20 50 — dB
3296,0 ... 3980,0 MHz 20 31 — dB
Attenuation α
0,0 ... 880,0 MHz 50 64 — dB
880,0 ... 905,0 MHz 30 39 — dB
905,0 ... 915,0 MHz 20 26 — dB
980,0 ...1050,0 MHz 23 30 — dB
1050,0 ...1850,0 MHz 50 70 — dB
1850,0 ...1920,0 MHz 50 72 — dB
1920,0 ...2880,0 MHz 50 64 — dB
2880,0 ...4000,0 MHz 40 66 — dB
4000,0 ...6000,0 MHz 40 66 — dB
4Oct 25, 2002
SAW Components B7721
942,5 MHz
Low-Loss Filter for Mobile Communication
Data Sheet
Characteristics
Operating temperature range:
T
= -10 to +80 ˚C
Terminating source impedance:
Z
S= 50 Ω
Terminating load impedance:
Z
L= 200 Ω || 68 nH
min. typ. max.
Center frequency
f
C— 942,5 — MHz
Maximum insertion attenuation αmax
925,0 ... 960,0 MHz — 2,4 3,0 dB
Amplitude ripple (p-p) ∆α
925,0 ... 960,0 MHz — 1,1 1,7 dB
Input VSWR 925,0 ... 960,0 MHz — 2,2 2,4
Output VSWR 925,0 ... 960,0 MHz — 2,0 2,4
Output phase balance φ(S31)−φ(S21)
925,0 ... 960,0 MHz -5 — 5 degree
Output amplitude balance (|S31/S21|)
925,0 ... 960,0 MHz -0,5 — 0,5 dB
Diff. to common mode suppression Ssc12
925,0 ... 960,0 MHz 20 38 — dB
824,0 ... 995,0 MHz 20 29 — dB
1648,0 ... 1990,0 MHz 20 50 — dB
3296,0 ... 3980,0 MHz 20 31 — dB
Attenuation α
0,0 ... 880,0 MHz 50 64 — dB
880,0 ... 905,0 MHz 30 37 — dB
905,0 ... 915,0 MHz 20 26 — dB
980,0 ...1050,0 MHz 23 29 — dB
1050,0 ...1850,0 MHz 50 70 — dB
1850,0 ...1920,0 MHz 50 72 — dB
1920,0 ...2880,0 MHz 50 64 — dB
2880,0 ...4000,0 MHz 40 66 — dB
4000,0 ...6000,0 MHz 40 66 — dB
5Oct 25, 2002
SAW Components B7721
942,5 MHz
Low-Loss Filter for Mobile Communication
Data Sheet
Transfer function (measurement)
Transfer function (wideband measurement)
6Oct 25, 2002
SAW Components B7721
942,5 MHz
Low-Loss Filter for Mobile Communication
Data Sheet
Published by EPCOS AG
Surface Acoustic Wave Components Division, SAW MC WT
P.O. Box 80 17 09, 81617 Munich, GERMANY
EPCOS AG 2002. Reproduction, publication and dissemination of this brochure and the informa-
tion contained therein without EPCOS’ prior express consent is prohibited.
Purchase orders are subject to the General Conditions for the Supply of Products and Services of
the Electrical and Electronics Industry recommended by the ZVEI (German Electrical and Electronic
Manufacturers’ Association), unless otherwise agreed.
This brochure replaces the previous edition.
For questions on technology, prices and delivery please contact the Sales Offices of EPCOS AG or
the international Representatives.
Due to technical requirements components may contain dangerous substances. For information on
the type in question please also contact one of our Sales Offices.
