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PDF TQ9203 Data sheet ( Hoja de datos )
| Número de pieza | TQ9203 | |
| Descripción | Low-Current Cellular Band Downconverter IC | |
| Fabricantes | TriQuint Semiconductor | |
| Logotipo |  |
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WIRELESS COMMUNICATIONS DIVISION
Mixer
LO In
LNA
IN0
Select
LNA
IN1
VDD
Mixer
IF out
Mixer
RF In
LNA
out
TQ9203
DATA SHEET
Low-Current Cellular
Band Downconverter IC
GND
LO Tune
Product Description
The TQ9203 RFIC Downconverter is a multifunction RF front end designed for the
high dynamic range cellular communications standards. The design of the TQ9203
provides a 2.5dB system noise figure for excellent sensitivity, and a good signal
range with –10dBm input IP3. Its low current consumption, single +5V operation and
small, plastic surface-mount package are ideally suited for cost-competitive, space-
limited and portable applications. In addition, two selectable RF inputs simplify
implementation of “antenna diversity”in applications such as CDPD. The TQ9203 is
specified over a RF frequency range of 800 to 1000MHz, and therefore may be used
for any of the cellular and cordless telephony standards.
Electrical Specifications1
Features
§+5-V single supply
§Internal buffer amplifier on mixer
LO port
§On-chip matching to 50Ω
§Two selectable RF inputs
§Low-cost SO-14 plastic package
§21dB system gain
§-10dBm typical input intercept point
§2.5dB typ. system noise figure
§10.5mA typ. operating current
Parameter
Frequency
Min Typ Max
800 1000
Units
MHz
Gain 21.0 dB
Noise Figure
2.5 dB
Input 3rd Order Intercept
-10.0 dBm
DC supply Current
10.5 mA
Note 1. Test Conditions: Vdd=5V, Ta=25C, filter IL=3.0dB, RF=881MHz, LO=966MHz, IF=85MHz,
LO input=-6dBm
2. Specified with external noise-matching circuit elements, with image-stripping BPF IL=3dB
3. Frequency separation of the two signals is 500KHz; BPF IL=3dB
Applications
§Cellular Communications
§Spread-Spectrum Receivers
§Cordless Phones
Electrical Characteristics
For additional information and latest specifications, see our website: www.triquint.com
1
1 page  
TQ9203
Data Sheet
17.5
17
16.5
16
15.5
15
14.5
4
16
15
14
13
12
11
10
9
8
4
LNA Performance
Gain vs. Vdd vs. Freq.
820MHz
881MHz
947MHz
4.5 5 5.5
Vdd (V)
6
LNA Performance
IP3 vs. Vdd vs. Freq.
820MHz
881MHz
947MHz
4.5 5 5.5
Vdd (V)
6
Mixer Performance
Gain vs. Freq. vs. Temp.
6
5
4
3
2
-40C
1 +25C
+85C
0
869 872 875 878 881 884 887 890 893
Freq. (MHz)
Mixer Performance
Noise Figure vs. Freq. vs. Temp.
14
13
12
11
10
9
-40C
+25C
8 +85C
869 872 875 878 881 884 887 890 893
Freq. (MHz)
Mixer Performance
IP3 vs. Freq. vs. Temp.
11
10
9
8
7
6 -40C
5 +25C
+85C
4
869 872 875 878 881 884 887 890 893
Freq. (MHz)
Mixer Performance
Gain vs. Input IP3 vs. LO Power
10
9
8
7
6
5
4
3
2
1
0
-8
Gain 881MHz
IP3 881MHz
-6 -4 -2
LO Power (dBm)
0
For additional information and latest specifications, see our website: www.triquint.com
5
5 Page 
Package Pinout
TQ9203
Data Sheet
Mixer LO input 1
14 Mixer IF Output
GND
2
13 LO Tune
Vdd 3
LNA IN0 4
TQ9203
12 GND
11 Mixer RF Input
Select
5
10 GND
LNA IN1 6
9 LNA Output
Pin Descriptions
Pin Name
Mixer LO IN
Vdd
Pin #
1
3
LNA IN0
4
Select
5
LNA IN1
6
LNA Out
Mixer RF IN
9
11
LO Tune
Mixer IF Out
GND
13
14
2,7,8,
10,12
GND 7
8 GND
Description and Usage
Buffered LO port. There is an internal DC block on this port, which is matched to 50Ω.
Supply voltage for bias circuitry and LNA. This pin draws 8mA, typically. Decouple with 0.01uF within 0.25 inch of
package.
LNA IN0 is an auxiliary input and has characteristics similar to the LNA IN1 input port. Best performance is achieved
with external noise-matching network. Internally DC blocked.
Input port selection switch. CMOS-compatible drive, switches input ports from LNA IN1 to LNA IN0. Low=IN0,
High=IN1.
LNA IN1 is the primary input port. Best performance is achieved with external noise-matching network. Internally DC
blocked.
Output port from switched LNA section. Internally matched to 50Ω. Internally DC blocked.
Mixer RF Input port. Image stripping band pass filtering before Mixer section improves noise and spurious performance.
No return to ground is required. Shunt L recommended for IF suppression.
LO buffer tuning, inductor to ground.
Mixer IF signal port. Open “collector-”type output requires connection to Vdd and impedance matching to load.
Ground connection. Keep physically short for stability and performance. Use several via holes immediately adjacent to
the pins down to backside ground plane.
For additional information and latest specifications, see our website: www.triquint.com
11
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet TQ9203.PDF ] | |
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