U7004B-MFSG3
| Model | U7004B-MFSG3 |
| Description | DECT SiGe Front End IC |
| PDF file | Total 12 pages (File size: 231K) |
| Chip Manufacturer | ATMEL |
Features
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Single 3-V Supply Voltage
High Power-added Efficient Power Amplifier (P
out
typically 26.5 dBm)
Ramp-controlled Output Power
Low-noise Preamplifier (NF typically 1.8 dB)
Biasing for External PIN Diode T/R Switch
Current-saving Standby Mode
Few External Components
DECT SiGe
Front End IC
U7004B
Electrostatic sensitive device.
Observe precautions for handling.
Description
The U7004B is a monolithic SiGe transmit/receive front end IC with power amplifier,
50-
W
internal matching, low-noise amplifier and T/R switch driver. It is especially
designed for operation in TDMA systems like DECT. Due to the ramp-control feature
and a very low quiescent current, an external switch transistor for V
S
is not required.
Figure 1.
Block Diagram
VS_PA
V1_PA
PA
PA_IN
RAMP
LNA
LNA_IN
TX/RX
Standby
control
T/R
Switch
driver
SWITCH_OUT
V2_PA_OUT
LNA_OUT
RX_ON
PU
R_SWITCH
4713A–DECT–07/03
1
