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Features
* * * * * * * *
Single 3-V Supply Voltage High-power-added Efficient Power Amplifier (Pout 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 VS 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-ISM-01/04
Pin Configuration
Figure 2. Pinning QFN20
V3_PA_OUT V3_PA_OUT V3_PA_OUT GND_LNA2 LNA_IN
10 9 8 7 6 5 4
V2_PA V2_PA GND V1_PA NC
11 12 13 14 15 16 17 18 19 20
T7026
3 2 1
GND_LNA1 SWITCH_OUT_TX SWITCH_OUT_RX R_SWITCH RX_ON
Pin Description
Pin
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Slug
Symbol
RX_ON R_SWITCH SWITCH_OUT_RX SWITCH_OUT_TX GND_LNA1 LNA_IN GND_LNA2 V3_PA_OUT V3_PA_OUT V3_PA_OUT V2_PA V2_PA GND V1_PA NC RAMP PA_IN VS_LNA LNA_OUT PU GND
Function
RX active high Resistor to GND sets the PIN diode current Switched current output for PIN diode (active in RX mode) Switched current output for PIN diode (active in TX mode) Ground Low-noise amplifier input Ground Inductor to power supply and matching network for power amplifier output Inductor to power supply and matching network for power amplifier output Inductor to power supply and matching network for power amplifier output Inductor to power supply for power amplifier Inductor to power supply for power amplifier Ground Supply voltage for power amplifier Not connected Power ramping control input Power amplifier input Supply voltage input for low-noise amplifier Low-noise amplifier output Power-up active high Ground
2
T7026
4563C-ISM-01/04
RAMP PA_IN VS_LNA LNA_OUT PU
T7026
Absolute Maximum Ratings
Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. All voltages are referred to ground (pins GND and slug)
Parameters
Supply voltage Pins VS_LNA, V1_PA, V2_PA and V3_PA_OUT, no RF Junction temperature Storage temperature RF input power LNA RF input power PA
Symbol
VS Tj Tstg PinLNA PinPA
Value
5 150 -40 to +125 -5 dBm 10 dBm
Unit
V C C dBm dBm
Thermal Resistance
Parameters
Junction ambient QFN20, slug soldered on PCB
Symbol
RthJA
Value
27
Unit
K/W
Operating Range
All voltages are referred to ground (pins GND and slug). Power supply points are VS_LNA, V1_PA, V2_PA, V3_PA_OUT. The following table represents the sum of all supply currents depending on the TX/RX mode.
Parameters
Supply voltage Pins V1_PA, V2_PA and V3_PA_OUT Supply voltage Pin VS_LNA Supply current TX RX
Symbol
VS VS IS IS IS Tamb
Min.
2.7 2.7
Typ.
3.6 3.0 470 8 10
Max.
4.6 5.5
Unit
V V mA mA A
Standby current PU = 0 Ambient temperature
-25
+25
+70
C
3
4563C-ISM-01/04
Electrical Characteristics
Test conditions (unless otherwise specified): VS = 3.6 V, Tamb = 25C
Parameters Power Amplifier
Supply voltage Supply current Standby current Frequency range Gain-control range Power gain maximum Power gain minimum Ramping voltage maximum Ramping voltage minimum Ramping current maximum Power-added efficiency Saturated output power Input matching(2) Output matching(2) Harmonics at P 1dBCP Harmonics at P 1dBCP
(1)
Test Conditions
Pins V1_PA, V2_PA and V3_PA_OUT TX RX (PA off), VRAMP 0.1 V Standby for VRAMP 0.1 V TX TX TX Pin PA_IN to V3_PA_OUT TX, power gain (max), pin RAMP TX, power gain (min), pin RAMP TX, VRAMP = 1.75 V, pin RAMP TX TX, input power = 0 dBm referred to pins V3_PA_OUT TX pin PA_IN TX pins V3_PA_OUT TX pins V3_PA_OUT TX pins V3_PA_OUT Standby, pin SWITCH_OUT RX TX at 100 W TX at 1.2 kW TX at 33 kW TX at R switch open
Symbol
Min.
Typ.
Max.
Unit
VS IS_TX IS_RX IS_standby f DGp Gp Gp VRAMP max VRAMP min IRAMP max PAE Psat Load VSWR Load VSWR 2 fo 3 fo IS_O_standby IS_O_RX IS_O_100 IS_O_1k2 IS_O_33k IS_O_R
2.7
3.6 470
4.6
V mA
10 10 2.4 60 28 -40 1.6 1.65 1 0.1 33 27 37 28 < 1.5:1 < 1.5:1 -30 -30 1 1 1.7 7 17 19 7 29 42 34 33 -17 1.7 2.5
A A GHz dB dB dB V V mA % dBm
dBc dBc A A mA mA mA mA mA V mA mA A GHz
T/R-switch Driver (Current Programming by External Resistor from R_SWITCH to GND)
Switch-out current output
I_Switch_Out_RX maximum
Low-noise Amplifier(3)
Supply voltage Supply current Supply current (LNA and control logic) Standby current Frequency range Notes: All, pin VS_LNA RX TX (control logic active) pin VS_LNA Standby, pin VS_LNA RX VS IS IS IS_standby f 2.4 1 2.7 3.0 8 5 10 0.5 10 2.5
1. Power amplifier shall be unconditionally stable, maximum duty cycle 100%, true cw operation, maximum load mismatch and duration: VSWR = 8:1 (all phases) 10 s, ZG = 50 W, VS = 3.6 V. 2. With external matching network, load impedance 50 W. 3. Low-noise amplifier shall be unconditionally stable. 4. With external matching components.
4
T7026
4563C-ISM-01/04
T7026
Electrical Characteristics (Continued)
Test conditions (unless otherwise specified): VS = 3.6 V, Tamb = 25C
Parameters
Power gain Noise figure Gain compression Third-order input interception point Input matching
(4) (4)
Test Conditions
RX, pin LNA_IN to LNA_OUT RX RX, referred to pin LNA_OUT RX RX, pin LNA_IN RX, pin LNA_OUT = `1', pins RX_ON and PU = `0' = `1', ViH = 2.4 V = `0'
Symbol
Gp NF O1dB IIP3 VSWRin VSWRout ViH ViL IiH IiL
Min.
15 -9 -16
Typ.
16 2.1 -7 -14 < 2:1 < 2:1
Max.
19 2.3 -6 -13
Unit
dB dB dBm dBm
Output matching High input level Low input level
Logic Input Levels (RX_ON, PU)
2.4 0 40 VS, LNA 0.5 60 0.2 V V A A
High input current Low input current Notes:
1. Power amplifier shall be unconditionally stable, maximum duty cycle 100%, true cw operation, maximum load mismatch and duration: VSWR = 8:1 (all phases) 10 s, ZG = 50 W, VS = 3.6 V. 2. With external matching network, load impedance 50 W. 3. Low-noise amplifier shall be unconditionally stable. 4. With external matching components.
Control Logic for LNA and T/R-switch Driver
Operation Mode
Standby TX RX
PU
0 1 1
RX_ON
0 0 1
5
4563C-ISM-01/04
Input/Output Circuits
Figure 3. Internal Circuitry; PA_IN, V1_PA
V1_PA
PA_IN
GND
Figure 4. Internal Circuitry; RAMP, V1_PA
V1_PA
RAMP
Figure 5. Internal Circuitry V2_PA
V2_PA
GND
6
T7026
4563C-ISM-01/04
T7026
Figure 6. Internal Circuitry V3_PA_OUT
V3_PA_OUT
GND
Figure 7. Internal Circuitry SWITCH_OUT_RX, SWITCH_OUT_TX, R_SWITCH, V1_PA
V1_PA
SWITCH_OUT_RX/ SWITCH_OUT_TX
R_SWITCH GND
Figure 8. Internal Circuitry LNA_IN, VS_LNA
VS_LNA
LNA_IN
GND
7
4563C-ISM-01/04
Figure 9. Internal Circuitry PU, RX_ON, VS_LNA
VS_LNA
RX_ON/ PU
Figure 10. Internal Circuitry LNA_OUT, VS_LNA
VS_LNA
LNA_OUT
GND
8
T7026
4563C-ISM-01/04
T7026
Ordering Information
Extended Type Number
T7026-PGS T7026-PGQ T7026-PGP
Package
QFN20 QFN20 QFN20
Remarks
Tube Taped and reeled Taped and reeled
Package Information
9
4563C-ISM-01/04
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4563C-ISM-01/04
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