Features
•
High-power-added Efficient Power Amplifier (Pout Typically 29 dBm)
•
Controlled Output Power
•
Low-noise Preamplifier (NF Typically 1.5 dB)
•
Few External Components
•
PSSO20 Plastic Package with Down-set Paddle
Electrostatic sensitive device.
Observe precautions for handling.
1. Description
The ATR0981 is a monolithic IC manufactured using Atmel’s advanced SiGe technol-
ogy. The IC performs a transmit and receive front-end function, dedicated for a
frequency range of 300 MHz to 500 MHz. It consists of a Low-Noise Amplifier (LNA)
and a Power Amplifier (PA) with good Power-added Efficiency (PAE).
Figure 1-1. Block Diagram
1234567 9108
20 19 18 17
BIAS
BIAS
16 15 14 12 1113
UHF SiGe
Front-end IC
ATR0981
Preliminary
Rev. 4862A–SIGE–09/05
2
4862A–SIGE–09/05
ATR0981 [Preliminary]
2. Pin Configuration
Figure 2-1. Pinning PSSO20 with Down Set Paddle
GND4
VS_CTRL
GND5
LNA_OUT
GND4
PA_IN
POUT_CONTRO
L
GND3
NC
GND6
V2_PA
GND5
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
V3_PA_OUT
V3_PA_OUT
V3_PA_OUT
GND3
GND2
GND1
LNA_IN
BIAS_LNA
Table 2-1. Pin Description
Pin Symbol Function
1 V3_PA_OUT Matching network for power amplifier output
2 V3_PA_OUT Inductor to power supply and matching network for power amplifier output
3 V3_PA_OUT Inductor to power supply and matching network for power amplifier output
4 GND4 Ground
5 GND3 Ground
6 NC Not connected
7 GND2 Ground
8 LNA_IN Low-noise amplifier input
9 GND1 Ground
10 BIAS_LNA Resistor to VS sets the LNA current
11 VS_CTRL Supply voltage for control of power amplifier
12 GND5 Ground
13 LNA_OUT Low-noise amplifier output and supply voltage
14 GND4 Ground
15 PA_IN Power amplifier input
16 GND3 Ground
17 POUT_CONTROL Power amplifier control input
18 GND6 Ground
19 V2_PA Supply voltage for power amplifier
20 GND5 Ground
3
4862A–SIGE–09/05
ATR0981 [Preliminary]
3. Absolute Maximum Ratings
All voltages are referred to GND (Pins 7, 9, 16, 18, 20, Slug)
Parameters Symbol Min. Max. Unit
Supply voltage PA, TX, pins 1, 2, 3, 11, 19 VS_PA 5 V
Supply voltage LNA, RX, pin 13 VS_LNA 2.8 V
PA control voltage, TX, pin 17 VCNTL 5V
Junction temperature Tjmax 150 °C
Storage temperature TStg –55 +125 °C
Electrostatic handling HMB, all RF pins VESD 200 V
Electrostatic handling HMB, all control pins VESD 2kV
4. Operating Range
All voltages are referred to GND (Pins 7, 9, 16, 18, 20, Slug). The following table represents the sum of all supply currents
into the mentioned pins.
Parameters Test Conditions/Pins Symbol Min. Typ. Max. Unit
Supply voltage PA TX, pins 1, 2, 3, 11, 19 VS_PA 3.0 3.6 4.5 V
Supply voltage LNA RX, pin 13 VS_LNA 2.4 2.5 2.6 V
Supply current PA TX, pins 1, 2, 3, 11, 19 IS_PA 400 mA
Supply current LNA Pins 10, 13 IS_LNA 2.5 mA
Ambient temperature Tamb –30 +25 +60 °C
5. Thermal Resistance
Parameters Symbol Value Unit
Junction ambient RthJA 19 K/W
4
4862A–SIGE–09/05
ATR0981 [Preliminary]
Notes: 1. Power amplifier should be unconditionally stable, maximum duty cycle 100%, true cw operation, maximum load mismatch
10:1 for 5s at 3.6V
2. Ensured by design
6. Electrical Characteristics
Test conditions (unless otherwise specified) : VS_PA = 3.6V, T
amb
= 25°C.
Parameters Test Conditions/Pins Symbol Min. Typ. Max. Unit
Power Amplifier(1)
Supply voltage TX, pins 1, 2, 3, 11, 19 VS_PA 3.0 3.6 4.5 V
Supply current TX, pins 1, 2, 3, 11, 19 IS_PA 400 550 mA
Frequency range TX f 300 500 MHz
Power gain TX, pin 15 to pins 1, 2, 3 Gp 30 34 dB
Output power control range TX ∆Pout ±1 ±3 dB
Control voltage TX, output power (maximum), pin 17 2.0 2.5 V
TX, output power (minimum), pin 17 0.7 V
Control current Pin 17 0 400 µA
Shut down mode Control voltage ≤ 0.1V,
pins 1, 2, 3, 11, 19 IS_PA 10 20 µA
Power added efficiency TX at 466 MHz PAE 50 55 %
Saturated output power TX, input power 3 dBm Psat 27.5 29 30.5 dBm
Harmonics TX, input power 3 dBm 2 fo –20 dBc
TX, input power 3 dBm 3 fo –20 dBc
Low-noise Amplifier
Supply voltage RX, pins 10, 13 VS_LNA 2.4 2.5 2.6 V
Supply current RX, pins 10, 13 IS_LNA 2.5 3.5 mA
Frequency range RX f 300 500 MHz
Power gain RX at R1 = 5.6 kΩ, IS = 2.5 mA Gp 17.5 19 20.5 dB
Noise figure(2) RX at R1 = 5.6 kΩ, IS = 2.5 mA NF 1.5 2.0 dB
Isolation RX at R1 = 5.6 kΩ, IS = 2.5 mA ISO 20 dB
Third-order input interception point RX at R1 = 5.6 kΩ, IS = 2.5 mA IIP3 –13 –10 dBm
5
4862A–SIGE–09/05
ATR0981 [Preliminary]
7. Typical Characteristics
Figure 7-1. Power Sweep
Figure 7-2. Ramp Sweep
Figure 7-3. VCC Sweep
-20.0
-10.0
0.0
10.0
20.0
30.0
40.0
50.0
60.0
70.0
-50.0 -40.0 -30.0 -20.0 -10.0 0.0 10.0 20.
0
P
in
(dBm)
PAE (%)
P
out
(dBm)
Gain (dB)
P
out
Gain
PAE
0
10
20
30
40
50
60
70
0.00 0.50 1.00 1.50 2.00 2.50 3.00 3.5
0
V
ramp (V)
PAE (%)
P
out
(dBm)
P
out
PAE
0.0
10.0
20.0
30.0
40.0
50.0
60.0
70.0
0.0 1.0 2.0 3.0 4.0 5.0
V
CC
(V)
PAE (%)
P
out
(dBm)
PAE
P
out
6
4862A–SIGE–09/05
ATR0981 [Preliminary]
8. Application Circuit
Figure 8-1. Typical Application Circuit
C14
C13
L8
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20 19 18 17
C3
C11
C2 C5 C6
C4
C7
C9
VS_PA L5
R1
L6
C1 R2L2 L3
BIAS
BIAS
PA_IN
PA_OUT
LNA_IN
POUT_CONTROL LNA_OUT
VS_PA
VS_LNA
VS_PA
VS_LN
A
16 15 14 12 1113
L4
C8
C10
L1
7
4862A–SIGE–09/05
ATR0981 [Preliminary]
Table 8-1. Bill of Materials for 460 MHz Applications
Part No. Description Part Value Package Vendor
C1 Capacitor 1 nF 0603 Standard
C2, C3, C7, C9, C11, C13 Capacitor 100 pf 0603 Standard
C4 Capacitor n.c. 0603 Standard
C5 Capacitor 3.9 pF 0603 Standard
C6 Capacitor 220 pF 0603 Standard
C8 Capacitor 2.7 pF 0604 Standard
C10 Capacitor 12 pF 0603 Standard
C14 Capacitor 8.2 pF 0603 Standard
L1 Inductor 1.5 nH 0805 Standard
L2 Inductor 39 nH 0805 Standard
L3, L5, L8 Inductor 22 nH 0805 Standard
L4 Inductor 6.8 nH 0805 Standard
L6 Inductor 3.9 nH 0805 Standard
R2 Resistor 0 0603 Standard
9. Ordering Information
Extended Type Number Package Remarks
ATR0981-TRUY PSSO20 Tube
ATR0981-TRHY PSSO20 Taped and reeled
8
4862A–SIGE–09/05
ATR0981 [Preliminary]
10. Package Information
CA
specifications
according to DIN
technical drawings
Package: PSS020
Dimensions in mm
3.1
0.575
1.3
0.05+0.09
4
B 0.15
0.65
5.85
0.12
0.25
A
110
20 11
0.18 max.
(20x)
6.75 max.
6.7 max.
∅ 0.4 AB
6.45±0.15
4.4±0.1
5.4±0.2
Issue: 1; 23.08.00
Drawing-No.: 6.543-5071.01-4
Printed on recycled paper.
4862A–SIGE–09/05
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