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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- Impedances on All Three Ports Small SSO16 Package
Applications
* Digital Communication Systems * 2200 MHz to 2700 MHz Transceivers for Base Stations
Electrostatic sensitive device. Observe precautions for handling.
2200-2700 MHz High Linearity SiGe Active Receive Mixer T0782
Description
The T0782 is a high-linearity active mixer which is manufactured using Atmel's advanced Silicon-Germanium technology. This mixer features a frequency range of 2200 MHz to 2700 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 T0782 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.
Preliminary
Figure 1. Block Diagram
RFP RFN
4 5 1 16 13
IFP IFN
LOP 12 LON
Rev. 4526A-SIGE-03/02
1
Pin Configuration
Figure 2. Pinning SSOP16
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 6.0 10 15 -40 to +85 -40 to +150 Unit V dBm dBm C C
2
T0782
4526A-SIGE-03/02
T0782
Thermal Resistance
Parameter Junction ambient Symbol RthJA Value TBD Unit K/W
Electrical Characteristics
Test conditions: Vcc = +5 V, Tamb = +25C RF input: -20 dBm at 2450 MHz LO output: 0 dBm at 2250 MHz
No. Parameters AC Performance Frequency range IF frequency range Output IP3 Output P1dB Conversion gain SSB noise figure RF return loss LO return loss IF return loss LO drive Isolation Performance Leakage (LO-RF) Leakage (LO-IF) Miscellaneous Supply voltage Supply current VCC ICC 4.75 5 150 5.25 V mA -30 -30 dBm dBm -3 RF1 = RF2 = -17 dBm/tone f FIF IP3 2200 10 200 15.5 4.5 10.5 15.5 14 14 14 0 +3 2700 300 MHz MHz dBm dBm dB dB dB dB dB dBm Test Conditions / Pins Pin Symbol Min. Typ. Max. Unit Type *
*) Type means: A = 100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter
Typical Device Performance
Figure 3. Conversion Gain versus RF Frequency, VCC = 5.0 V, LO = 0 dBm, RFIN = -20 dBm, IF = 200 MHz
14
12
7 q A v h B
10
8
6 2300
2350
2400
2450
2500
2550
SAA Arrp A HC
3
4526A-SIGE-03/02
Figure 4. Return Loss versus RF Frequency, VCC = 5.0 V
0
-10
i q A G A r S
-20
-30
-40
-50 2300
2350
2400
2450
2500
2550
SAA A rrp A HC
Figure 5. Return Loss at LO Input, VCC = 5.0 V
0
-10
i q A G A r S
-20
-30
-40
-50 2000 2100 2200 2300 2400 2500
GPA A rrpA HC
Figure 6. Return Loss versus IF Frequency, VCC = 5.0 V
0
5
i q A G A r S
10
15
20
25 150 175 200
D AA A rrp A HC
225
250
4
T0782
4526A-SIGE-03/02
T0782
Figure 7. Demo Test Board Schematic
5V
IFout J5 Lfil
Vcc
C3
T2 C7 IC1 1 2 3 4 5 6 7 8 L1 16 15 14 13 12 11 10 9
C9
C1
Vcc
C4 RFin J3 C5 R2 C20 R1
Vcc
R3 L4 R4 C21 L2 C12 C11 LOin J4
Vcc
T0782
Vcc
Vcc
C6
Vcc
C10
Bill of Material
Component Designator IC1 J3, J4, J5 T2 Lfil L1, L2 C1, C3, C20, C21 C6, C10 C7, C9 C4, C5 C11, C12 R1, R2, R3, R4 L4 1:1 1 H 100 nH 5.6 pF 100 pF 120 pF 1.2 pF 1.5 pF 0 27 nH TOKO LL1608-FSR10J Value Vendor Atmel Johnson Components Mini-circuits Part Number T0782 142-0701-851 TC1-1 Description SiGe receiver mixer SMA connector, end launch with tab, for 0.062 inch thick board IF transformer Inductor, 1210 footprint, minimum 200 mA rating Inductor, 0603 footprint, high Q series Capacitor, 0603 footprint Capacitor, 0603 footprint Capacitor, 0603 footprint Capacitor, 0603 footprint Capacitor, 0603 footprint Resistor, 0603 footprint Inductor, 0603 footprint
5
4526A-SIGE-03/02
Figure 8. Demo Test Board (Fully Assembled PCB)
J5
47 mm
T2 C7 C3 C4 L3 C5 C20 L1 C6 C9 IC1
T0782
T9
C1 L4
C11
T11
J3
C12 C21 L2 C10
J4
Lfil CON 2 1
47 mm
Figure 9. Recommended Package Footprint
31.75
6.35 0.74 0.4 0.74 3.0
3.0
0.33 via
0.7
0.9
6.9
all units are in mm - Indicates metalization - vias connect pad to underlying ground plane Remark: heatslug must be soldered to GND.
6
T0782
4526A-SIGE-03/02
T0782
Ordering Information
Extended Type Number T0782 Package SSOP16 Remarks
Package Information
7
4526A-SIGE-03/02
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4526A-SIGE-03/02 xM

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