Document
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.
1700 - 2300 MHz High Linearity SiGe Active Receiver Mixer T0781
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.
Preliminary
Figure 1. Block Diagram
RFP RFN
4 5 1 16 13
IFP IFN
LOP 12 LON
Rev. 4534B–SIGE–01/03
1
Pin Configuration
Figure 2. Pinning SSOP16
IFP VCC GND RFP RFN GND VCC L1
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1 2 3 4 5 6 7 8
16 15 14 13 12 11 10 9
IFN VCC GND LOP LON GND VCC L2
Pin Description
Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Symbol IFP VCC GND RFP RFN GND VCC L1 L2 VCC GND LON LOP GND VCC 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
T0781
Absolute Maximum Ratings (1)
All voltages are referred to GND.
Parameters Supply voltage LO input IF input Operating temperature Storage temperature Notes:
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Symbol VCC LOP, LON RFP, RFN TOP Tstg
Value 5.5 10 15 -40 to +85 -65 to +150
Unit V dBm V °C °C
1. The device may not survive all maximum values applied simultaneously.
Thermal Resistance
Parameters Junction ambient Junction case Symbol RthJA RthJC Value TBD 46 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
Test Conditions For RF = 2000 to 2300 MHz operation, single-ended RF + LO drive is recommended 1700 to 2000 MHz Operation Pin 4, 5 Symbol fRF Min. 1700 Typ. Max. 2000 2000 to 2300 MHz Operation Min. 2000 Typ. Max. 2300 Unit MHz Type* B, C
No. 1 1.1
Parameters AC Performance RF frequency range
1.11 1.2 1.3
LO frequency range IF frequency range Input IP3 RF1 = RF2 = -15 dBm/tone, 1 MHz spacing 1, 16 4, 5
fLO FIF IIP3
1400 30 12 200 15
2000 300
1700 30 12 200 15
2300 300
MHz MHz dBm
B, C B, C D
1.4 1.5
Input P1dB Conversion gain
4, 5 1, 16
P1dB .