T0781.pdf 데이터시트 (총 18 페이지) - 파일 다운로드 T0781 데이타시트 다운로드

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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
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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

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Pin Configuration
Figure 2. Pinning SSOP16
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IFP
VCC
GND
RFP
RFN
GND
VCC
L1
1
2
3
4
5
6
7
8
16 IFN
15 VCC
14 GND
13 LOP
12 LON
11 GND
10 VCC
9 L2
Pin Description
Pin Symbol
1 IFP
2 VCC
3 GND
4 RFP
5 RFN
6 GND
7 VCC
8 L1
9 L2
10 VCC
11 GND
12 LON
13 LOP
14 GND
15 VCC
16 IFN
Function
IF positive output
5-V power supply
Ground
RF positive input
RF negative input
Ground
5-V power supply
External inductor terminal
External inductor terminal
5-V power supply
Ground
Local oscillator, negative input
Local oscillator, positive input
Ground
5-V power supply
IF negative output
2 T0781
4534B–SIGE–01/03

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T0781
Absolute Maximum Ratings (1)
All voltages are referred to GND.
Parameters
Symbol
Value
Supply voltage
LO input
VCC
LOP, LON
5.5
10
IF input
RFP, RFN
15
Operating temperature
TOP -40 to +85
Storage temperature
Tstg -65 to +150
Notes: 1. The device may not survive all maximum values applied simultaneously.
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Thermal Resistance
Parameters
Junction ambient
Junction case
Symbol
RthJA
RthJC
Value
TBD
46
Unit
V
dBm
V
°C
°C
Unit
K/W
°C/W
Electrical Characteristics
Test Conditions: VCC = 5 V, Tamb = 25°C, RF input: -40 dB at 1880 MHz, LO input: 0 dBm at 1680 MHz
1700 to 2000 MHz
2000 to 2300 MHz
Test
Operation
Operation
No. Parameters
Conditions
Pin Symbol Min. Typ. Max. Min. Typ. Max. Unit Type*
1 AC Performance
1.1 RF frequency
range
For RF = 2000 4, 5 fRF 1700
to 2300 MHz
operation,
single-ended
RF + LO drive is
recommended
2000 2000
2300 MHz B, C
1.11 LO frequency
range
fLO 1400
2000 1700
2300 MHz B, C
1.2 IF frequency
range
1, FIF
16
30 200 300 30 200 300 MHz B, C
1.3 Input IP3
RF1 = RF2 =
-15 dBm/tone,
1 MHz spacing
4, 5
IIP3
12 15
12 15
dBm D
1.4 Input P1dB
4, 5 P1dB
1
2
35
dBm D
1.5 Conversion gain
1, G
16
9 12
69
dB A
*) Type means: A = 100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter
Note:
1. The return losses shown were measured with the T0781 mounted on Atmel’s FR4 evaluation boards using standard
matching practices as indicated on the respective application schematic (see Figure 23 and Figure 24). Users following
the RF, LO and IF matching guidelines will achieve similar performance.
4534B–SIGE–01/03
3