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PDF T0781 Data sheet ( Hoja de datos )
| Número de pieza | T0781 | |
| Descripción | 1700 - 2300 MHz High Linearity SiGe Active Receiver Mixer | |
| Fabricantes | ATMEL Corporation | |
| Logotipo |  |
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Features
• Active Mixer with Conversion Gain
• No External LO Driver Necessary
• Low LO Drive Level Required
• RF and LO Ports May Be Driven Single-ended
• Single 5-V Supply Voltage
• High LO-RF Isolation
• Broadband Resistive 50-W Impedances on All Three Ports
Applications
www.Da•taISnhferaets4tUru.ccotmure Digital Communication Systems
• 1700 MHz to 2300 MHz Receivers for CDMA/PCS/DCS/UMTS Base Stations
Electrostatic sensitive device.
Observe precautions for handling.
Description
The T0781 is a high linearity active mixer which is manufactured using Atmel’s
advanced Silicon-Germanium technology. This mixer features a frequency range of
1700 MHz to 2300 MHz. It operates from a single 5-V supply and provides 12 dB of
conversion gain while requiring only 0 dBm input to the integrated LO driver. An IF
amplifier is also included.
The T0781 incorporates internal matching on each RF, IF and LO ports to enhance
ease of use and to reduce the external components required. The RF and LO inputs
can be driven differentially or single-ended.
1700 - 2300 MHz
High Linearity
SiGe Active
Receiver Mixer
T0781
Preliminary
Figure 1. Block Diagram
4
RFP
RFN 5
13
LOP
LON 12
1 IFP
16 IFN
Rev. 4534B–SIGE–01/03
1
1 page  
T0781
1700 MHz to 2000 MHz: Typical Device Performance
www.DataSheet4U.com
Figure 3. Conversion Gain Versus Temperature, PLO = 0 dBm
20.0
Conversion Gain vs Tem perature
Plo = 0dBm
16.0
12.0
8.0
4.0
0.0
1400
-40º C
+25º C
+85º C
1600
1800
2000
Frequency (MHz)
2200
Figure 4. Conversion Gain Versus LO Drive, Tamb = 25°C
Conversion Gain vs LO Drive
T=+25ºC
20.0
16.0
12.0
8.0
4.0
0.0
1400
-3 dBm
0 dBm
+3 dBm
1600
1800
2000
Frequency (MHz)
2200
Figure 5. Leakages, PLO = 0 dBm at Pins, PRF = -20 dBm at Pins, Tamb = 25°C
Le ak age s
Plo=0 dBm at pins, Prf=-20 dBm at pins,
T=+25ºC
0
LO-RF
-20
RF-IF
LO-IF
-40
-60
-80
1400
1600
1800
2000
Frequency (MHz)
2200
4534B–SIGE–01/03
5
5 Page 
www.DataSheet4U.com
4534B–SIGE–01/03
Figure 19. RF & LO Return Loss, VCC = 5 V, Tamb = 25°C
0
-5
-10
-15
-20
-25
-30
-35
1800
RF & LO Return Loss (Note 1)
Vcc=5V, T=+25ºC
RF RL
LO RL
1900 2000 2100 2200 2300
Frequency (MHz)
2400
Figure 20. IF Return Loss, Tamb = 25°C
0
-5
-10
-15
-20
-25
-30
30
IF Return Loss (Note 1)
T=25C
75 120 165 210 255 300
Frequency (MHz)
Figure 21. Input P1dB Versus Temperature, PLO = 0 dBm
Input P1dB vs Tem perature
Plo=0dBm
10.0
-40º C
8.0 +25ºC
+85º C
6.0
4.0
2.0
0.0
2000
2050
2100 2150 2200
Frequency (MHz)
2250
2300
T0781
11
11 Page | ||
| Páginas | Total 18 Páginas | |
| PDF Descargar | [ Datasheet T0781.PDF ] | |
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