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Single 3-V Supply Voltage
High-power-added Efficient Power Amplifier (P
out
Typically 28 dBm)
Ramp-controlled Output Power
Low-noise Preamplifier (NF Typically 2.1 dB)
Biasing for External PIN Diode T/R Switch
Current-saving Standby Mode
Few External Components
Package: QFN20
Description
The T7026 is a monolithic SiGe transmit/receive front-end IC with power amplifier,
low-noise amplifier and T/R switch driver. It is especially designed for operation in
TDMA systems like DECT, IEEE 802.11 FHSS WLAN, home RF and ISM proprietary
radios. Due to the ramp-control feature and a very low quiescent current, an external
switch transistor for V
S
is not required.
Electrostatic sensitive device.
Observe precautions for handling.
ISM 2.4 GHz
Front End IC
T7026
Figure 1.
Block Diagram
RX_ON
LNA_OUT
V1_PA
V2_PA
V2_PA
PA_IN
RAMP
GND
TX/RX
standby
control
TX
GND
PU
GND
LNA
PA
SiGe FE
T7026
SWITCH_OUT_RX
SWITCH_OUT_TX
R_SWITCH
GND
V3_PA_OUT
V3_PA_OUT
V3_PA_OUT
VS_LNA
LNA_IN
Rev. 4563C鈥揑SM鈥?1/04