U7004B Datasheet, PDF (1/12 Pages) ATMEL Corporation – DECT SiGe Front End IC

Features
• 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
Electrostatic sensitive device.
Observe precautions for handling.
DECT SiGe
Front End IC
U7004B
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
V2_PA_OUT
TX/RX
Standby
control
T/R
Switch
driver
SWITCH_OUT
LNA_OUT RX_ON PU
R_SWITCH
4713A–DECT–07/03
1