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Features
• Power Amplifier with High Power Added Efficient (PAE), • • • •
Pout Typically 29 dBm Controlled Output Power Low-noise Preamplifier (NF Typically 1.7 dB) Few External Components PSSO16 Plastic Package with Down Set Paddle
Description
The T0980 is a monolithic IC manufactured with Atmel’s advanced SiGe technology. The IC performs a transmit and receive front-end dedicated for a frequency range of 400 MHz to 500 MHz. It consists of a Low-Noise Amplifier (LNA) and a Power Amplifier (PA) with good Power Efficiency (PAE). Electrostatic sensitive device. Observe precautions for handling.
SiGe Transmit/ Receive Frontend IC T0980
Figure 1. Block Diagram
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16 13 11 9
DataShee
Bias
1
3
5
8
Rev. 4584A–SIGE–01/03
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Pin Configuration
Figure 2. Pinning PSSOP16
V2_PA_OUT 1 V2_PA_OUT 2 GND POUT_ CONTROL GND LNA_IN 3 16 V2_PA_OUT 15 GND V1_PA GND
14
4 T0980 5
13
12
PA_IN
6
11
GND
GND BIAS_LNA
7
10 LNA_OUT 9 VS_CTRL
8
Pin Description
Pin 1 2 4 5 6 7 8 9 10 11 12 13 14 15 16 Symbol V2_PA_OUT V2_PA_OUT GND POUT_CONTROL GND LNA_IN GND BIAS_LNA VS_CTRL LNA_OUT GND PA_IN GND V1_PA GND V2_PA_OUT Function Inductor to power supply and matching network for power amplifier output Inductor to power supply and matching network for power amplifier output Ground Ground Low-noise amplifier input Ground Resistor to VS sets the LNA current Supply voltage for control of power amplifier Low-noise amplifier output and supply voltage Ground Power amplifier input Ground Supply voltage for power amplifier Ground Matching network for power amplifier output
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Power amplifier control input
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T0980
4584A–SIGE–01/03
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T0980
Absolute Maximum Ratings
All voltages are referred to GND
Parameters Supply voltage PA, TX Pins 1, 2, 9 and 14 Supply voltage LNA, RX Pin 10 Junction temperature Storage temperature Electrostatic handling HMB; Pins 1, 2, 6, 10, 12 and 16 Electrostatic handling HMB; Pins 3, 4, 5, 7, 8, 9, 11, 13, 14 and 15 Symbol VS_PA VS_LNA Tjmax TStg VESD VESD -55 Min. Max. 4.8 2.8 150 +125 200 2000 Unit V V °C °C V V
Operating Range
All voltages are referred to GND. The following table represents the sum of all supply currents.
Parameters Supply voltage PA Supply voltage LNA Supply current PA Supply current LNA Ambient temperature Test Conditions/Pins TX, Pins 1, 2, 9 and 14 RX, Pin 10 TX, Pins 1, 2, 9 and 14 Pins 10 and 8 Symbol VS_PA VS_LNA IS_PA IS_LNA Tamb -25 Min. Typ. 3.6 2.5 400 2.5 25 60 Max. 4.5 2.6 Unit V V mA mA °C
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Value 25 Unit K/W
Thermal Resistance
Parameters Junction ambient Symbol RthJA
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4584A–SIGE–01/03
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Electrical Characteristics
Test conditions (unless otherwise specified) : VS_PA = 3.6 V, Tamb = 25°C.
Parameters Power Amplifier Supply voltage Supply current Frequency range Power gain Control voltage Control current Shut down mode Power added efficiency Saturated output power Harmonics Low-noise Amplifier Supply voltage Supply current Frequency range Noise figure Isolation 3rd-order input interception point Note: RX, Pins 8 and 10 RX at R1 = 5.6 kW, Pins 8 and 10 RX VS_LNA IS_LNA f Gp NF ISO IIP3 400 19 1.7 20 -10 2.5 2.5 2.5 500 V mA MHz dB dB dBm
(1)
Test Conditions/Pins TX, Pins 1, 2, 9 and 14 TX, Pins 1, 2, 9 and 14 TX TX TX, output power (maximum), Pin 4 TX, output power (minimum), Pin 4 Pin 4 Control voltage £ 0.1 V, Pins 1, 2, 9 and 14 TX at 450 MHz TX, input power 3 dBm TX, input power 3 dBm TX, input power 3 dBm
Symbol VS_PA IS_PA f Gp
Min.
Typ. 3.6 400
Max.
Unit V mA
400 33 2.5 0.7 0
500
MHz dB V V
400 10
µA µA %
IS_PA PAE Psat 2 fo 3 fo 50
29 -20 -20
dBm dBc dBc
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RX at R1 = 5.6 kW, Is = 2.5 mA RX at R1 = 5.6 kW, Is = 2.5 mA RX at R1 = 5.6 kW, Is = 2.5 mA
dB DataShee
1. Power amplifier should be unconditional stable, maximum duty cycle 100%, true cw-operation, maximum load mismatch 10:1 for 5 s at 3.6 V
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T0980
4584A–SIGE–01/03
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T0980
Typical Characteristics
Figure 3. Power Sweep
70.0 60.0
PAE
50.0
PAE (%) Pout (dBm) Gain (dB)
40.0 30.0 20.0 10.0 0.0 -10.0 -20.0 -50.0 -40.0 -30.0 -20.0 -10.0 0.0 10.0 20.0
Gain Pout
Pin (dBm)
Figure 4. Ramp Sweep
70 60 PAE 50 40 30 Pout 20 10 0 0.00
PAE (%) Pout (dBm)
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0.50
1.00
1.50
2.00
2.50
3.00
3.50
Vramp (V)
Figure 5. VCC Sweep
70.0 60.0 PAE 50.0
PAE (%) Pout (dBm)
40.0 30.0 Pout 20.0 10.0 0.0 0.0 1.0 2.0
VCC (V)
3.0
4.0
5.0
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Figure 6. Typical Application Circuit (460 MHz)
C12
1uF
VS_PA C2 C9
100pF 1uF
L5
22nH
C11
100pF
L6
4.7nH
L4
6.8nH
C8
2.7pF
GND
PA_OUT C10
12pF
1 2 3
16 15
L1.