LNA IC. TQ3131 Datasheet


TQ3131 IC. Datasheet pdf. Equivalent


Part Number

TQ3131

Description

3V Cellular Band CDMA/AMPS LNA IC

Manufacture

TriQuint Semiconductor

Total Page 16 Pages
Datasheet
Download TQ3131 Datasheet


TQ3131
WIRELESS COMMUNICATIONS DIVISION
Control
Logic C2
GND
C2
L1
VDD
GND
TQ3131
DATA SHEET
3V Cellular Band
CDMA/AMPS LNA IC
RF RF 50 ohm
IN OUT RF Out
GND
C3
Control
Logic
Product Description
The TQ3131 is a 3V, RF LNA IC designed specifically for Cellular band CDMA/AMPS
applications. It’s RF performance meets the requirements of products designed to
the IS-95 and AMPS standards. The TQ3131 is designed to be used with the
TQ5131 (CDMA/AMPS mixer) which provides a complete CDMA receiver for
800MHz dual-mode phones.
The LNA incorporates on-chip switches which determine CDMA, AMPS, and bypass
mode select. When used with the TQ5131 (CDMA RFA/mixer), four gain states are
available. The RF output port is internally matched to 50 , greatly simplifying the
design and keeping the number of external components to a minimum. The TQ3131
achieves good RF performance with low current consumption, supporting long
standby times in portable applications. Coupled with the very small SOT23-8
package, the part is ideally suited for Cellular band mobile phones.
Electrical Specifications1
Parameter
Frequency
Min Typ Max
832 894
Units
MHz
Gain 13.0 dB
Noise Figure
1.4 dB
Input 3rd Order Intercept
10.0 dBm
DC supply Current
10.5 mA
Note 1: Test Conditions: Vdd=2.8V, Tc=25C, RF frequency=881MHz, CDMA High Gain state.
Features
Small size: SOT23-8
Single 3V operation
Low-current operation
Gain Select
Mode Select
High IP3 performance
Few external components
Applications
IS-95 CDMA Mobile Phones
AMPS Mobile Phones
Dual Mode CDMA Cellular applications
832-870MHz CDMA applications
For additional information and latest specifications, see our website: www.triquint.com
1

TQ3131
TQ3131
Data Sheet
Electrical Characteristics
Parameter
Conditions
RF Frequency
CDMA Mode-High Gain
Gain
Noise Figure
Input IP3
LNA IN Return Loss (with external matching)
LNA OUT Return Loss
Supply Current
Bypass Mode
Gain
Noise Figure
Input IP3
LNA IN Return Loss (with external matching)
LNA OUT Return Loss
Supply Current
AMPS Mode
Gain
Noise Figure
Input IP3
LNA IN Return Loss (with external matching)
LNA OUT Return Loss
Supply Current
Supply Voltage
Note 1: Test Conditions: Vdd=2.8V, RF=881MHz, TC = 25° C, unless otherwise specified.
Note 2: Min/Max limits are at +25°C case temperature, unless otherwise specified.
Min.
832
11.5
8.0
10
10
-3.0
18.0
10
10
8.5
2.0
10
10
2.7
Absolute Maximum Ratings
Parameter
DC Power Supply
Power Dissipation
Operating Temperature
Storage Temperature
Signal level on inputs/outputs
Voltage to any non supply pin
Value
5.0
500
-40 to 85
-60 to 150
+20
+0.3
Units
V
mW
C
C
dBm
V
Typ/Nom
881
13.0
1.4
10.0
10.5
-2.0
2.0
30.0
1.2
11.0
1.6
3.0
4.0
2.8
2 For additional information and latest specifications, see our website: www.triquint.com
Max. Units
894 MHz
dB
2.0 dB
dBm
dB
dB
13.5 mA
dB
3.0 dB
dBm
dB
dB
2.5 mA
dB
2.2 dB
dBm
dB
dB
5.5 mA
3.3 V


Features WIRELESS COMMUNICATIONS DIVISION TQ3131 C2 Control Logic C2 L1 DATA SHEET V DD GND GND 3V Cellular Band CDMA/AMP S LNA IC RF IN RF 50 ohm OUT RF Out C ontrol Logic GND C3 Features Small s ize: SOT23-8 Single 3V operation Low-cu rrent operation Product Description Th e TQ3131 is a 3V, RF LNA IC designed sp ecifically for Cellular band CDMA/AMPS applications. It’s RF performance mee ts the requirements of products designe d to the IS-95 and AMPS standards. The TQ3131 is designed to be used with the TQ5131 (CDMA/AMPS mixer) which provides a complete CDMA receiver for 800MHz du al-mode phones. The LNA incorporates on -chip switches which determine CDMA, AM PS, and bypass mode select. When used w ith the TQ5131 (CDMA RFA/mixer), four g ain states are available. The RF output port is internally matched to 50 Ω, greatly simplifying the design and keep ing the number of external components t o a minimum. The TQ3131 achieves good R F performance with low current consumption, supporting long standby.
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