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-Ω Impedances on All Three Ports Small SSO16 Package
Applications
• Digital Communication Systems • 800 MHz to 1000 MHz Transceivers for Base Stations
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Electrostatic sensitive device. Observe precautions for handling.
800 MHz 1000 MHz High Linearity SiGe Active Receive Mixer T0780 Preliminary
Description
The T0780 is a high linearity active mixer which is manufactured using Atmel’s advanced Silicon-Germanium (SiGe) technology. This mixer features a frequency range of 800 MHz to 1000 MHz. It operates from a single 5-V supply and provides 10 dB of conversion gain while requiring only 0 dBm input to the integrated LO driver. An IF amplifier is also included. The T0780 incorporates internal matching on each RF, IF and LO port to enhance ease of use and to reduce the external components required. The RF and LO inputs can be driven differentially or single-ended.
Figure 1. Block Diagram
RFP RFN
4 5 1 16 13
IFP IFN
LOP 12 LON
Rev. 4525D–SIGE–10/03
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 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
Absolute Maximum Ratings
All voltages are referred to GND.
Parameters Supply voltage LO input IF input Operating temperature Storage temperature Symbol VCC LOP, LON RFP, RFN TOP Tstg Value 5 to 5.5 10 15 -40 to +85 -65 to +150 Unit V dBm dBm °C °C
2
T0780 [Preliminary]
4525D–SIGE–10/03
T0780 [Preliminary]
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: -20 dBm at 900 MHz; LO output: 0 dBm at 700 MHz
No. 1 1.1 1.11 1.2 1.5 1.6 1.3 1.4 1.7 1.8 1.9 1.10 2 2.1 2.2 2.3 3 3.1 3.1 Parameters AC Performance RF frequency range LO frequency range IF frequency range Conversion gain SSB noise figure Input IP3 Input P1dB RF return loss LO return loss IF return loss LO drive Isolation Performance Leakage (LO-RF) Leakage (LO-IF) Leakage (RF-IF) Miscellaneous Supply voltage Supply current VCC ICC 4.75 5 160 5.25 180 V mA A A Single-ended configuration Single-ended configuration Single-ended configuration -40 -26 -40 -35 -20 -35 dBm dBm dBm D D D Matched to 50 W(1) Matched to 50 W(1) Matched to 50 W
(1) (1)
Test Conditions/Pins
Pin
Symbol fR.