1.0 GHz band Low Power I/Q Modulator For Direct Conversion - Fujitsu Media Devices
Description
FUJITSU SEMICONDUCTOR DATA SHEET
DS04-23510-2E
ASSP
1.
0 GHz band Low Power I/Q Modulator For Direct Conversion
MB54608L/MB54608B
s DESCRIPTION
The MB54608L/B is an I/Q Modulator for direct conversion method, and is used for up to 1.
0 GHz band digital cellular phones such as GSM, PDC and so on.
MB54608L consists of a frequency doubler, a Flip-flop type quadrature phase shifter, I/Q modulator and a mixer for frequency offset with a separate power supply.
Fujitsu’s advanced Bipolar process has realized very low current operation(ICC = 16.
5 mA @3 V).
SSOP-20 and BCC-16 package are available.
(MB54608L: SSOP-20, MB54608B: BCC-16)
s FEATURES
• Supporting GSM frequency band Output frequency: 1.
0 GHz (max.
) Output power: –4 dBm(Typical, VBB = 1.
0 Vp-p input) • Low voltage operation: VCC = 2.
6 V to 3.
8 V
(Continued)
s PACKAGES
20-pin plastic SSOP
16-pad plastic BCC
(FPT-20P-M03)
(LCC-16P-M04)
MB54608L/MB54608B
(Continued) • Low current: Please refer to below table.
• Offset mixer on-chip: The separate power supply control is possible.
(only MB54608L) • Output power level switch (Mode) enables high power mode
Offset Mixer not used Icc Pout(VBB=1.
0 Vp–p) Ips 16.
5 mA –4 dBm 19.
0 mA –2 dBm Offset Mixer used 22.
5 mA –4 dBm 25.
0 mA –2 dBm
Mode = Open Mode = GND Mode = Open Mode = GND Normal operation Power down
0.
22 mA
0.
44 mA
Note:Typical values Further increase of the output power is possible by attaching a resistor at Pcnt pin.
• Operating temperature range: Ta = –20 to +75°C
2
MB54608L/MB54608B
s PIN ASSIGNMENTS
• MB54608L (SSOP-20)
(TOP VIEW)
RFin 1 GND 2 IFin 3 VCCM 4 LO 5 LOX 6 VCC 7 GND 8 GND 9 GND 10
20 Pcnt 19 PSQ 18 Out 17 PSM 16 VCC 15 Mode 14 I 13 XI 12 XQ 11 Q
(FPT-20P-M03)
• MB54608B (BBC-16)
(TOP VIEW) Q XQ XI I Mode VCC Out 1 2 3 4 5 6 7 8 16 GND 15 14 13 12 11 10 9 GND VCC LOX LO N.
C.
GND
PSQ N.
C.
(LCC-16P-M04)
Note: MB54608B doesn’t have the off-set Mixer and Pcnt pin.
3
MB54608L/MB54608B
s PIN DESCRIPTIONS • MB54608L (SSOP-20)
Pin no.
1...
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