ADL5802ACPZ-R7 [ADI]
Dual Channel, High IP3, 100 MHz to 6 GHz Active Mixer; 双通道,高IP3 , 100 MHz至6 GHz有源混频器型号: | ADL5802ACPZ-R7 |
厂家: | ADI |
描述: | Dual Channel, High IP3, 100 MHz to 6 GHz Active Mixer |
文件: | 总32页 (文件大小:780K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
Dual Channel, High IP3,
100 MHz to 6 GHz Active Mixer
ADL5802
FE ATURES
FUNCTIONAL BLOCK DIAGRAM
VPOS RF1+ RF1– GND RF2+RF2–
Power conversion gain of 1.6 dB
Wideband RF, LO, and IF ports
SSB noise figure of 11 dB
24
23
22
21
20
19
1
2
3
4
18
17
16
15
GND
GND
GND
GND
OP2+
OP2–
Input IP3 of 28 dBm
Input P1dB of 12 dBm
Typical LO drive of 0 dBm
Low LO leakage
Single supply operation: 5 V @ 240 mA
Exposed paddle, 4 mm × 4 mm, 24-lead LFCSP package
OP1+
OP1–
GND
5
6
14 GND
IP3
BIAS
ADL5802
APPLICATIONS
VPOS
13 VPOS
Cellular base station receivers
Main and diversity receiver designs
Radio link downconverters
7
8
9
10
11
12
LOIN GND VSET
ENBL GND LOIP
Figure 1.
GENERAL DESCRIPTION
The IF outputs are designed for a 200 Ω source impedance and
provide a typical voltage conversion gain of 7.6 dB when loaded
into a 200 Ω load.
The ADL5802 uses high linearity, double-balanced, active mixer
cores with integrated LO buffer amplifiers to provide high
dynamic range frequency conversion from 100 MHz to 6 GHz.
The mixers benefit from a proprietary linearization architecture
that provides enhanced input IP3 performance when subject to
high input levels. A bias adjust feature allows the input linearity,
SSB noise figure, and dc current to be optimized using a single
control pin. The high input linearity allows the device to be used
in demanding cellular applications where in-band blocking
signals may otherwise result in degradation in dynamic perform-
ance. The balanced active mixer arrangement provides superb
LO to RF and LO to IF leakage, typically better than −30 dBm.
The ADL5802 is fabricated using a SiGe high performance IC
process. The device is available in a compact 4 mm × 4 mm,
24-lead LFCSP package and operates over a −40°C to +85°C
temperature range. An evaluation board is also available.
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityisassumedbyAnalog Devices for its use, norforany infringements ofpatents or other
rightsofthirdpartiesthat mayresult fromitsuse.Specificationssubjectto changewithoutnotice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
www.analog.com
©2009 Analog Devices, Inc. All rights reserved.
ADL5802
TABLE OF CONTENTS
Features .............................................................................................. 1
Spur Performance........................................................................21
Circuit Description..........................................................................24
LO Amplifier and Splitter...........................................................24
RF Voltage to Current (V-to-I) Converter ...............................24
Mixer Cores..................................................................................24
Mixer Load ...................................................................................24
Bias Circuit...................................................................................24
Applications Information ...............................................................25
Basic Connections .......................................................................25
RF and LO Ports ..........................................................................25
IF Port ...........................................................................................26
Evaluation Board .............................................................................27
Outline Dimensions ........................................................................29
Ordering Guide............................................................................29
Applications....................................................................................... 1
Functional Block Diagram .............................................................. 1
General Description ......................................................................... 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
Absolute Maximum Ratings............................................................ 5
ESD Caution.................................................................................. 5
Pin Configuration and Function Descriptions............................. 6
Typical Performance Characteristics ............................................. 7
Downconverter Mode Using a Broadband Balun.................... 7
Downconverter Mode Using a Johanson 2.7 GHz Balun ..... 12
Downconverter Mode Using a Johanson 3.5 GHz Balun ..... 15
Downconverter Mode Using a Johanson 5.7 GHz Balun ..... 18
REVISION HISTORY
11/09—Revision 0: Initial Version
Rev. 0 | Page 2 of 32
ADL5802
SPECIFICATIONS
VS = 5 V, VSET = 4 V, TA = 25°C, fLO = (fRF − 153) MHz, LO power = 0 dBm, Z0 1 = 50 Ω, unless otherwise noted.
Table 1.
Parameter
Test Conditions/Comments
Min
Typ
Max
Unit
RF INPUT INTERFACE
Return Loss
Tunable to >20 dB over a limited bandwidth
18
50
dB
Ω
MHz
Input Impedance
RF Frequency Range
OUTPUT INTERFACE
Output Impedance
IF Frequency Range
DC Bias Voltage2
100
6000
Differential impedance, f = 200 MHz
Can be matched externally to 3000 MHz
Externally generated
240
VS
Ω
MHz
V
LF
4.75
600
5.25
LO INTERFACE
LO Power
Return Loss
−10
0
18
50
+10
dBm
dB
Ω
Input Impedance
LO Frequency Range
POWER INTERFACE
Supply Voltage
Quiescent Current
Disable Current
100
6000
MHz
4.75
5
5.25
300
V
Resistor programmable
ENBL pin low
Time from ENBL pin low to power-up
Time from ENBL pin high to power-down
220
170
182
28
mA
mA
ns
Enable Time
Disable Time
ns
DYNAMIC PERFORMANCE at fRF = 900 MHz/1900 MHz
Power Conversion Gain3
fRF = 900 MHz
fRF = 1900 MHz
fRF = 900 MHz
1.5
1.6
7.5
7.6
10
11
18
22
26
28
60
45
12
dB
dB
dB
dB
dB
dB
dB
dB
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBc
dBc
dBc
dBc
dBc
dBc
Voltage Conversion Gain4
SSB Noise Figure
fRF = 1900 MHz
fCENT = 900 MHz
fCENT = 1900 MHz
fCENT = 900 MHz
fCENT = 1900 MHz
fCENT = 890 MHz
fCENT = 1890 MHz
fCENT = 890 MHz
fCENT = 1890 MHz
fRF = 900 MHz
SSB Noise Figure Under Blocking5
Input Third Order Intercept6
Input Second Order Intercept7
Input 1 dB Compression Point
fRF = 1900 MHz
Unfiltered IF output
12
LO to IF Output Leakage
LO to RF Input Leakage
RF to IF Output Isolation
RFI1 to RFI2 Channel Isolation
IF/2 Spurious8
−35
−30
25
45
0 dBm input power, fRF = 900 MHz
0 dBm input power, fRF = 900 MHz
0 dBm input power, fRF = 1900 MHz
0 dBm input power, fRF = 1900 MHz
−68
−67
−53
−59
IF/3 Spurious8
IF/2 Spurious8
IF/3 Spurious8
DYNAMIC PERFORMANCE at fRF = 2500 MHz9
Power Conversion Gain10
Voltage Conversion Gain4
SSB Noise Figure
SSB Noise Figure Under Blocking11
Input Third Order Intercept6
−0.5
5.67
11.5
18
dB
dB
dB
dB
fCENT = 2145 MHz
fCENT = 2500 MHz
30
dBm
Rev. 0 | Page 3 of 32
ADL5802
Parameter
Test Conditions/Comments
fCENT = 2500 MHz
Min
Typ
47
13
36
31
26
42
−52
−56
Max
Unit
dBm
dBm
dBm
dBm
dBc
dBc
dBc
dBc
Input Second Order Intercept7
Input 1 dB Compression Point
LO to IF Output Leakage
LO to RF Input Leakage
RF to IF Output Isolation
RFI1 to RFI2 Channel Isolation
IF/2 Spurious8
Unfiltered IF output
0 dBm input power
0 dBm input power
IF/3 Spurious8
DYNAMIC PERFORMANCE at fRF = 3500 MHz12
Power Conversion Gain13
Voltage Conversion Gain4
SSB Noise Figure
−0.5
5.5
12.5
18
25
39
13
33
28
31
dB
dB
dB
dB
dBm
dBm
dBm
dBm
dBm
dBc
dBc
dBc
dBc
SSB Noise Figure Under Blocking14
Input Third Order Intercept5
Input Second Order Intercept7
Input 1 dB Compression Point
LO to IF Output Leakage
LO to RF Input Leakage
RF to IF Output Isolation
RFI1 to RFI2 Channel Isolation
IF/2 Spurious8
fCENT = 3500 MHz
fCENT = 3500 MHz
fCENT = 3500 MHz
Unfiltered IF output
39
−46
−63
0 dBm input power
0 dBm input power
IF/3 Spurious8
DYNAMIC PERFORMANCE at fRF = 5500 MHz15
Power Conversion Gain16
Voltage Conversion Gain4
SSB Noise Figure
−3
5.67
14
dB
dB
dB
SSB Noise Figure Under Blocking17
Input Third Order Intercept5
Input Second Order Intercept7
Input 1 dB Compression Point
LO to IF Output Leakage
LO to RF Input Leakage
RF to IF Output Isolation
RFI1 to RFI2 Channel Isolation
IF/2 Spurious8
fCENT = 5800 MHz
fCENT = 5500 MHz
fCENT = 5500 MHz
17
23
35
13
42
27
50
33
dB
dBm
dBm
dBm
dBm
dBm
dBc
dBc
dBc
dBc
Unfiltered IF output
0 dBm input power
0 dBm input power
−49
−64
IF/3 Spurious8
1 Z0 is the characteristic impedance assumed for all measurements and the PCB.
2 Supply voltage must be applied from an external circuit through choke inductors.
3 Excluding 4:1 IF port transformer (TC4-1W+), RF and LO port transformers (TC1-1-13M+), and PCB loss.
4 ZSOURCE = 50 Ω, differential; ZLOAD = 200 Ω, differential 5 dBm; ZSOURC E is the impedance of the source instrument; ZLOAD is the load impedance at the output.
5 fRF1 = fCENT, fBLOCKER = (fCENT − 5) MHz, fLO = (fCENT − 153) MHz, blocker level = 0 dBm.
6 fRF1 = (fCENT − 1) MHz, fRF2 = fC EN T, fLO = (fCENT − 153) MHz, each RF tone at −10 dBm.
7 fRF1 = fCENT, fRF2 = (fCENT + 100) MHz, fLO = (fC EN T − 153) MHz, each RF tone at −10 dBm.
8 For details, see the Spur Performance section.
9 VS = 5 V, VSET = 4.5 V, TA = 25°C, fLO = (fRF − 211) MHz, LO power = 0 dBm, Z0 = 50 Ω.
10 Excluding 4:1 IF port transformer (TC4-1W+), RF and LO port transformers (2500BL14M050), and PCB loss.
11
f
= fCENT, fBLOCKER = (fCENT − 5) MHz, fLO = (fCENT − 235) MHz, blocker level = 0 dBm.
RF1
12 VS = 5 V, VSET = 5 V, TA = 25°C, fLO = (fRF − 153) MHz, LO power = 0 dBm, Z0 = 50 Ω.
13 Including 4:1 IF port transformer (TC4-1W+), RF and LO port transformers (3600BL14M050), and PCB loss.
14
f
RF1
= fCENT, fBLOCKER = (fCENT − 5) MHz, fLO = (fCENT − 153) MHz, blocker level = −20 dBm.
15 VS = 5 V, VSET = 4.8 V, TA = 25°C, fLO = (fRF − 380) MHz, LO power = 0 dBm, Z0 = 50 Ω.
16 Including 4:1 IF port transformer (TC4-1W+), RF and LO port transformers (5400BL15B050), and PCB loss.
17
f
RF1
= fCENT, fBLOCKER = (fCENT − 5) MHz, fLO = (fCENT − 300) MHz, blocker level = −20 dBm.
Rev. 0 | Page 4 of 32
ADL5802
ABSOLUTE MAXIMUM RATINGS
Table 2.
Stresses above those listed under Absolute Maximum Ratings
may cause permanent damage to the device. This is a stress
rating only; functional operation of the device at these or any
other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
Parameter
Rating
Supply Voltage, VPOS
5.5 V
VSET, ENBL
5.5 V
OP1+, OP1−, OP2+, OP2−
RF Input Power
5.5 V
20 dBm
1.6 W
26.5°C/W
8.7°C/W
150°C
Internal Power Dissipation
θJA (Exposed Paddle Soldered Down)1
θJC (at Exposed Paddle)
Maximum Junction Temperature
Operating Temperature Range
Storage Temperature Range
ESD CAUTION
−40°C to +85°C
−65°C to +150°C
1 As measured on the evaluation board. For details, see the Evaluation Board
section.
Rev. 0 | Page 5 of 32
ADL5802
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
PIN 1
INDICATOR
GND
GND
OP1+
OP1–
GND
1
2
3
4
5
6
18 GND
17 GND
16 OP2+
15 OP2–
14 GND
13 VPOS
ADL5802
TOP VIEW
(Not to Scale)
VPOS
NOTES
1. THERE IS AN EXPOSED PADDLE THAT
MUST BE SOLDERED TO GROUND.
Figure 2. Pin Configuration
Table 3. Pin Function Descriptions
Pin No.
Mnemonic
Function
GND
Device Common (DC Ground).
1, 2, 5, 8, 11,
14, 17, 18, 21
3, 4
OP1+, OP1−
Channel 1 Mixer Differential Output Terminals. Bias must be applied through pull-up choke inductors or
the center tap of the IF transformer.
6, 13, 24
7
9, 10
12
VPOS
ENBL
LOIP, LOIN
VSET
Positive Supply Voltage. 5.0 V nominal.
Device Enable. Pull low or leave disconnected to enable the device; pull high to disable the device.
Differential LO Input Terminals. Internally matched to 50 Ω; must be ac-coupled.
High Input IP3 Bias Control. For high input IP3 performance, apply ~4 V to 5 V. Improved noise figure (NF)
performance and lower supply current can be set by applying ~2 V to 3 V to the VSET pin. A resistor can be
connected to the supply to raise the voltage, whereas a resistor to GND lowers the voltage.
15, 16
OP2−, OP2+
Channel 2 Mixer Differential Output Terminals. Bias must be applied through pull-up choke inductors or
the center tap of the IF transformer.
19, 20
22, 23
RF2−, RF2+
RF1−, RF1+
EPAD
Differential RF Input Terminals for Channel 2. Internally matched to 50 Ω; must be ac-coupled.
Differential RF Input Terminals for Channel 1. Internally matched to 50 Ω; must be ac-coupled.
Exposed Paddle. Must be soldered to ground.
Rev. 0 | Page 6 of 32
ADL5802
TYPICAL PERFORMANCE CHARACTERISTICS
DOWNCONVERTER MODE USING A BROADBAND BALUN
VS = 5 V, T A = 25°C, VSET = 4 V, I F = 153 MHz, as measured using a typical circuit schematic with low-side local oscillator (LO), unless
otherwise noted. Insertion loss of input and output baluns (TC1-1-13M+, TC4-1W+) is extracted from the gain measurement.
6
4.0
3.5
3.0
2.5
2.0
1.5
1.0
39.96
33.30
26.64
19.98
13.32
6.66
5
4
T
= –40°C
A
3
T
= +25°C
A
2
1
GAIN = 900MHz
GAIN = 1900MHz
0
INPUT IP3 = 900MHz
INPUT IP3 = 1900MHz
T
= +85°C
A
–1
–2
–3
–4
0
0
500
1000
1500
2000
2500
3000
3500
–15
–10
–5
0
5
10
15
LO POWER (dBm)
RF FREQUENCY (MHz)
Figure 3. Power Conversion Gain vs. RF Frequency
Figure 6. Power Conversion Gain and Input IP3 vs. LO Power
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
100
MEAN = 1.5
SD = 0.039
80
60
40
20
0
900MHz
1900MHz
0
50
100
150
200
250
IF FREQUENCY (MHz)
GAIN (dB)
Figure 4. Power Conversion Gain vs. IF Frequency
Figure 7. Power Conversion Gain Distribution
3.0
2.5
2.0
1.5
1.0
0.5
0
0.30
0.25
0.20
0.15
0.10
0.05
0
2.5
T
T
= –40°C
= +25°C
A
2.0
1.5
1.0
0.5
0
A
T
= +85°C
A
GAIN = 900MHz
GAIN = 1900MHz
I
I
= 900MHz
POS
POS
= 1900MHz
0
1
2
3
4
5
6
4.7
4.8
4.9
5.0
SUPPLY (V)
5.1
5.2
5.3
VSET (V)
Figure 5. Power Conversion Gain and IPOS vs. VSET
Figure 8. Power Conversion Gain vs. Supply Voltage
Rev. 0 | Page 7 of 32
ADL5802
80
70
60
50
40
30
20
10
0
40
35
30
25
20
15
10
5
T
= –40°C
T
= +25°C
A
A
T
= +85°C
A
T
= +85°C
A
T
= +25°C
A
T
= –40°C
A
0
0
0
500
1000
1500
2000
2500
3000
3500
500
1000
1500
2000
2500
3000
3500
RF FREQUENCY (MHz)
RF FREQUENCY (MHz)
Figure 9. Input IP3 vs. RF Frequency
Figure 12. Input IP2 vs. RF Frequency
40
35
30
25
20
15
80
70
60
50
40
30
20
10
0
900MHz
1900MHz
900MHz
1900MHz
10
0
0
50
100
150
200
250
50
100
150
200
250
IF FREQUENCY (MHz)
IF FREQUENCY (MHz)
Figure 13. Input IP2 vs. IF Frequency
Figure 10. Input IP3 vs. IF Frequency
80
70
60
50
40
30
20
10
0
35
30
25
20
15
10
5
900MHz
1900MHz
INPUT IP3 = 900MHz
INPUT IP3 = 1900MHz
NF = 900MHz
NF = 1900MHz
0
0
0
1
2
3
4
5
6
1
2
3
4
5
6
VSET (V)
VSET (V)
Figure 11. Input IP3, Noise Figure vs. VSET
Figure 14. Input IP2 vs. VSET
Rev. 0 | Page 8 of 32
ADL5802
25
20
15
10
5
20
18
16
14
12
10
8
T
= +85°C
A
T
= –40°C
A
NF vs. IF, RF = 1900MHz
NF vs. IF, RF = 900MHz
T
= +25°C
A
6
4
2
0
0
0
100
200
300
400
500
600
700
0
500
1000
1500
2000
2500
3000
3500
IF FREQUENCY (MHz)
RF FREQUENCY (MHz)
Figure 15. Input P1dB vs. RF Frequency
Figure 18. SSB Noise Figure vs. IF Frequency
20
18
16
14
12
10
8
30
25
20
15
10
5
900MHz
NF, RF 1846MHz,
IF 153MHz, BLOCKER 1841MHz
1900MHz
6
NF, RF 951MHZ,
IF 153MHz, BLOCKER 946MHz
4
2
0
0
–30
–25
–20
–15
–10
–5
0
5
10
0
50
100
150
200
250
BLOCKER LEVEL (dBm)
IF FREQUENCY (MHz)
Figure 16. Input P1dB vs. IF Frequency
Figure 19. SSB Noise Figure vs. Blocker Level
20
18
16
14
12
10
8
18
16
14
12
10
8
T
= +85°C
A
T
= +25°C
A
1900MHz
900MHz
T
= –40°C
A
6
6
4
4
2
2
0
–15
0
–10
–5
0
5
10
15
0
500
1000
1500
2000
2500
3000
3500
LO LEVEL (dBm)
RF FREQUENCY (MHz)
Figure 17. SSB Noise Figure vs. RF Frequency
Figure 20. SSB Noise Figure vs. LO Drive
Rev. 0 | Page 9 of 32
ADL5802
–10
–15
–20
–25
–30
–35
–40
–45
–50
–55
–60
–0
RF RETURN LOSS 5500MHz BALUN:
5400BL15B050 3pF INPUT CAPACITANCE
–5
–10
–15
–20
–25
–30
–35
T
= –40°C
A
T
= +25°C
A
RF RETURN LOSS 3500MHz BALUN:
3600BL14M050 1.5pF INPUT CAPACITANCE
T
= +85°C
A
RF RETURN LOSS 2500MHz BALUN:
2500BL14M050 3pF INPUT CAPACITANCE
RF RETURN LOSS 900MHz AND 1900MHz BALUN:
TC1-1-13M+ 100pF INPUT CAPACITANCE
–40
0
1000
2000
3000
4000
5000
6000
7000
0
500
1000
1500
2000
2500
3000
3500
FREQUENCY (MHz)
LO FREQUENCY (MHz)
Figure 21. RF Return Loss Measured Differentially at the RF Port
Figure 24. LO to IF Leakage vs. LO Frequency
–10
–15
–20
–25
–30
–35
–40
–45
–50
–55
–60
0
LO RETURN LOSS 2500MHz BALUN:
2500BL14M050 3pF
LO RETURN LOSS 5500MHz BALUN:
INPUT CAPACITANCE
5400BL15B050 3pF
–5
–10
–15
–20
–25
–30
INPUT CAPACITANCE
T
= +85°C
A
T
= +25°C
A
T
= –40°C
A
LO RETURN LOSS BALUN:
TC1-1-13M+ 100pF
INPUT CAPACITANCE
LO RETURN LOSS 3500MHz BALUN:
3600BL14M050 1.5pF
INPUT CAPACITANCE
0
500
1000
1500
2000
2500
3000
3500
0
1000
2000
3000
4000
5000
6000
7000
LO FREQUENCY (MHz)
FREQUENCY (MHz)
Figure 22. LO Return Loss Measured Differentially at the LO Port
Figure 25. LO to RF Leakage vs. LO Frequency
0
–10
–20
–30
–40
–50
–60
500
8
6
4
2
400
300
200
100
0
T
= +25°C
A
RESISTANCE
T
= +85°C
A
CAPACITANCE
T
= –40°C
A
0
–2
3000
0
500
1000
1500
2000
2500
3000
3500
10
100
1000
RF FREQUENCY (MHz)
IF FREQUENCY (MHz)
Figure 23. IF Differential Output Impedance (R Parallel C Equivalent)
Figure 26. RF to IF Output Isolation vs. RF Frequency
Rev. 0 | Page 10 of 32
ADL5802
70
65
60
55
50
45
40
35
30
25
20
T
= –40°C
= +85°C
A
T
= +25°C
A
T
A
0
500
1000
1500
2000
2500
3000
3500
RF FREQUENCY (MHz)
Figure 27. RF Channel Isolation
Rev. 0 | Page 11 of 32
ADL5802
DOWNCONVERTER MODE USING A JOHANSON 2.7 GHZ BALUN
VS = 5 V, T A = 25°C, VSET = 4.5 V, I F = 2 1 1 MHz, as measured using a typical circuit schematic with low-side LO, unless otherwise noted.
Insertion loss of input and output baluns (2500BL14M050, TC4-1W+) is included in the gain measurement.
5
35
30
25
20
15
10
5
4
3
2
T
= –40°C
A
INPUT IP3
1
T
= +25°C
A
0
–1
–2
–3
–4
–5
NOISE FIGURE
T
= +85°C
A
0
0
1
2
3
4
5
6
1900
2100
2300
2500
2700
2900
3100
VSET (V)
RF FREQUENCY (MHz)
Figure 31. Input IP3, Noise Figure vs. VSET
Figure 28. Power Conversion Gain vs. RF Frequency
0.30
0.27
0.24
0.21
0.18
0.15
0.12
0.09
0.06
0.03
0
60
55
50
45
40
35
30
5
4
3
I
POS
T
= +85°C
A
2
T
= –40°C
A
1
0
GAIN
T
= +25°C
A
–1
–2
–3
–4
–5
1900
2100
2300
2500
2700
2900
3100
0
1
2
3
4
5
6
RF FREQUENCY (MHz)
VSET (V)
Figure 32. Input IP2 vs. RF Frequency
Figure 29. Power Conversion Gain and IPOS vs. VSET
35
30
25
20
15
10
5
50
T
= +85°C
T
= +25°C
A
A
48
46
44
42
40
38
36
34
32
30
T
= –40°C
A
0
1900
2100
2300
2500
2700
2900
3100
0
1
2
3
4
5
6
VSET (V)
RF FREQUENCY (MHz)
Figure 33. Input IP2 vs. VSET
Figure 30. Input IP3 vs. RF Frequency
Rev. 0 | Page 12 of 32
ADL5802
15
14
13
12
11
10
9
0
–5
T
= +85°C
A
T
= +25°C
A
–10
–15
–20
–25
–30
–35
–40
–45
–50
T
= –40°C
A
T
= –40°C
A
T
= +25°C
A
T
= +85°C
A
8
1900
1900
2100
2300
2500
2700
2900
3100
2100
2300
2500
2700
2900
3100
LO FREQUENCY (MHz)
RF FREQUENCY (MHz)
Figure 34. Input P1dB vs. RF Frequency
Figure 37. LO to IF Leakage vs. LO Frequency
20
18
16
14
12
10
8
–30
–31
–32
–33
–34
–35
–36
–37
–38
–39
–40
T
= +85°C
A
T
= +25°C
A
T
= +25°C
A
T
= +85°C
A
T
= –40°C
A
T
= –40°C
A
6
4
2
0
1800
1900
2100
2300
2500
2700
2900
3100
2000
2200
2400
2600
2800
3000
LO FREQUENCY (MHz)
RF FREQUENCY (MHz)
Figure 38. LO to RF Leakage vs. LO Frequency
Figure 35. SSB Noise Figure vs. RF Frequency
30
25
20
15
10
5
–21
–23
–25
–27
–29
–31
–33
–35
T
= +25°C
A
T
= –40°C
A
NF, RF 2145MHz,
IF 230MHz, BLOCKER 2140MHz
T
= +85°C
A
0
–60
1900
2100
2300
2500
2700
2900
3100
–50
–40
–30
–20
–10
0
10
RF FREQUENCY (MHz)
BLOCKER LEVEL (dBm)
Figure 36. SSB Noise Figure vs. Blocker Level
Figure 39. RF to IF Output Isolation vs. RF Frequency
Rev. 0 | Page 13 of 32
ADL5802
50
48
46
44
42
40
38
36
34
32
T
= –40°C
A
T
= +25°C
A
T
= +85°C
A
30
1900
2100
2300
2500
2700
2900
3100
RF FREQUENCY (MHz)
Figure 40. RF Channel Isolation
Rev. 0 | Page 14 of 32
ADL5802
DOWNCONVERTER MODE USING A JOHANSON 3.5 GHZ BALUN
VS = 5 V, T A = 25°C, VSET = 5 V, I F = 1 5 3 MHz, as measured using a typical circuit schematic with low-side LO, unless otherwise noted.
Insertion loss of input and output baluns (3600BL14M050, TC4-1W+) is included in the gain measurement.
5
25
20
15
10
5
4
3
INPUT IP3
2
T
= –40°C
A
1
T
= +25°C
A
0
NOISE FIGURE
–1
–2
–3
–4
–5
T
= +85°C
A
0
0
1
2
3
4
5
6
2900
3100
3300
3500
3700
3900
4100
VSET (V)
RF FREQUENCY (MHz)
Figure 44. Input IP3, Noise Figure vs. VSET
Figure 41. Power Conversion Gain vs. RF Frequency
0.30
0.27
0.24
0.21
0.18
0.15
0.12
0.09
0.06
0.03
0
50
48
46
44
42
40
38
36
34
32
30
5
4
3
I
POS
2
T
= –40°C
A
1
0
GAIN
T
= +85°C
A
T = +25°C
A
–1
–2
–3
–4
–5
2900
3100
3300
3500
3700
3900
4100
0
1
2
3
4
5
6
RF FREQUENCY (MHz)
VSET (V)
Figure 45. Input IP2 vs. RF Frequency
Figure 42. Power Conversion Gain and IPOS vs. VSET
30
25
20
15
10
5
50
T
= +85°C
A
48
46
44
42
40
38
36
34
32
30
T
= +25°C
A
T
= –40°C
A
0
2900
3100
3300
3500
3700
3900
4100
0
1
2
3
4
5
6
VSET (V)
RF FREQUENCY (MHz)
Figure 43. Input IP3 vs. RF Frequency
Figure 46. Input IP2 vs. VSET
Rev. 0 | Page 15 of 32
ADL5802
15
14
13
12
11
10
9
–20
–25
–30
–35
–40
–45
–50
T
= +85°C
T
= +25°C
A
A
T
= +25°C
A
T
= –40°C
A
T
= +85°C
A
T
= –40°C
A
8
2900
2900
3100
3300
3500
3700
3900
4100
4100
4100
3100
3300
3500
3700
3900
4100
LO FREQUENCY (MHz)
RF FREQUENCY (MHz)
Figure 47. Input P1dB vs. RF Frequency
Figure 50. LO to IF Leakage vs. LO Frequency
–20
–22
–24
–26
–28
–30
–32
–34
–36
–38
–40
20
18
16
14
12
10
8
T
= +85°C
A
T
= –40°C
A
T
= +25°C
T
= +25°C
A
T
= +85°C
A
A
T
= –40°C
A
6
4
2
0
2700
2900
3100
3300
3500
3700
3900
4100
4300
2900
3100
3300
3500
3700
3900
RF FREQUENCY (MHz)
LO FREQUENCY (MHz)
Figure 48. SSB Noise Figure vs. RF Frequency
Figure 51. LO to RF Leakage vs. LO Frequency
45
40
35
30
25
20
–10
–15
–20
–25
–30
–35
–40
–45
–50
NF, RF 3805MHz,
IF 300MHz, BLOCKER 3800MHz
T
T
T
= –40°C
= +25°C
= +85°C
A
A
A
15
10
5
0
–60
–50
–40
–30
–20
–10
0
10
2900
3100
3300
3500
3700
3900
BLOCKER LEVEL (dBm)
RF FREQUENCY (MHz)
Figure 49. SSB Noise Figure vs. Blocker Level
Figure 52. RF to IF Output Isolation vs. RF Frequency
Rev. 0 | Page 16 of 32
ADL5802
50
48
46
44
42
40
38
36
34
32
30
T
= +25°C
A
T
= +85°C
T
= –40°C
A
A
2900
3100
3300
3500
3700
3900
4100
RF FREQUENCY (MHz)
Figure 53. RF Channel Isolation
Rev. 0 | Page 17 of 32
ADL5802
DOWNCONVERTER MODE USING A JOHANSON 5.7 GHZ BALUN
VS = 5 V, T A = 25°C, VSET = 4.8 V, I F = 3 8 0 MHz, as measured using a typical circuit schematic with low-side LO, unless otherwise noted.
Insertion loss of input and output baluns (5400BL15B050, TC4-1W+) is included in the gain measurement.
25
20
15
10
5
30
24
18
12
6
2
0
IP3
T
= +85°C
A
T
= –40°C
A
–2
–4
–6
–8
NOISE FIGURE
T
= +25°C
A
0
0
4900
5100
5300
5500
5700
5900
6100
0
1
2
3
4
5
6
RF FREQUENCY (MHz)
VSET (V)
Figure 57. Input IP3, Noise Figure vs. VSET
Figure 54. Power Conversion Gain vs. RF Frequency
60
5
4
0.30
0.27
0.24
0.21
0.18
0.15
0.12
0.09
0.06
0.03
0
55
50
45
40
35
30
25
20
15
10
3
2
T
= +85°C
A
IPOS
GAIN
1
T
= +25°C
= –40°C
A
0
T
A
–1
–2
–3
–4
–5
4900
5100
5300
5500
5700
5900
0
1
2
3
4
5
6
RF FREQUENCY (MHz)
VSET (V)
Figure 58. Input IP2 vs. RF Frequency
Figure 55. Power Conversion Gain and IPOS vs. VSET
50
45
40
35
30
25
20
30
25
20
15
10
5
T
= –40°C
A
T
= +25°C
A
T
= +85°C
A
0
4900
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
5700
5300
RF FREQUENCY (MHz)
5100
5500
5900
6100
VSET (V)
Figure 59. Input IP2 vs. VSET
Figure 56. Input IP3 vs. RF Frequency
Rev. 0 | Page 18 of 32
ADL5802
16
15
14
13
12
11
10
9
–10
–15
–20
–25
–30
–35
–40
–45
–50
–55
–60
T
= +85°C
A
T
T
= +25°C
A
T
= –40°C
A
= –40°C
A
T
= +25°C
A
T
A
= +85°C
8
4900
5100
5300
5500
5700
5900
6100
4900
5100
5300
5500
5700
5900
6100
RF FREQUENCY (MHz)
LO FREQUENCY (MHz)
Figure 60. Input P1dB vs. RF Frequency
Figure 63. LO to IF Leakage vs. LO Frequency
–15
–17
–19
–21
–23
–25
–27
–29
–31
–33
–35
25
20
15
10
5
T
= –40°C
A
T
= +25°C
A
T
T
T
= –40°C
= +25°C
= +85°C
A
A
A
T
= +85°C
A
0
4900
5100
5300
5500
5700
5900
6100
4900
5100
5300
5500
5700
5900
6100
RF FREQUENCY (MHz)
LO FREQUENCY (MHz)
Figure 61. SSB Noise Figure vs. RF Frequency
Figure 64. LO to RF Leakage vs. LO Frequency
45
40
35
30
25
20
15
10
5
–30
–35
–40
–45
–50
–55
–60
–65
–70
T
= +25°C
T
= –40°C
A
A
NF, RF 5805MHz,
IF 380MHz, BLOCKER 5800MHz
T
= +85°C
A
0
–60
4900
5100
5300
5500
5700
5900
6100
–50
–40
–30
–20
–10
0
BLOCKER LEVEL (dBm)
RF FREQUENCY (MHz)
Figure 62. SSB Noise Figure vs. Blocker Level
Figure 65. RF to IF Output Isolation vs. RF Frequency
Rev. 0 | Page 19 of 32
ADL5802
45
43
41
39
37
35
33
31
29
27
T
T
T
= –40°C
= +25°C
= +85°C
A
A
A
25
4900
5100
5300
5500
5700
5900
6100
RF FREQUENCY (MHz)
Figure 66. RF Channel Isolation
Rev. 0 | Page 20 of 32
ADL5802
SPUR PERFORMANCE
All spur tables are (N × fRF) − (M × fLO) and were measured using the standard evaluation board (see the Evaluation Board section). Mixer
spurious products are measured in decibels relative to the carrier (dBc) from the IF output power level. Data was measured for frequencies
less than 6 GHz only. The typical noise floor of the measurement system is −100 dBm.
900 MHz Performance
VS = 5 V, VS E T = 4 V, TA = 25°C, RF power = 0 dBm, LO power = 0 dBm, fRF = 900 MHz, fLO = 703 MHz, Z0 = 50 Ω.
M
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
0
−35.9
0.0
−25.5
−46.3
−68.2
≤100
−96.4
≤100
≤100
≤100
≤100
−47.3
−19.8
−61.6
−67.3
≤100
≤100
≤100
≤100
≤100
≤100
−27.4
−64.3
−68.7
−98.0
≤100
≤100
≤100
≤100
≤100
≤100
−51.5
−30.0
−80.7
−71.0
≤100
≤100
≤100
≤100
≤100
≤100
≤100
−37.5
−75.6
−67.5
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
−62.1
−45.0
−88.1
−86.3
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
−47.5
−67.8
−79.1
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
−34.3
−49.1
−86.7
−91.8
≤100
≤100
−55.3
−82.6
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
1
2
−69.2
−79.6
≤100
≤100
≤100
≤100
−91.5
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
−98.4
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
3
4
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
5
6
N
7
8
9
10
11
12
13
14
15
2090 MHz Performance
VS = 5 V, VS E T = 4 V, TA = 25°C, RF power = 0 dBm, LO power = 0 dBm, fRF = 2090 MHz, fLO = 1842 MHz, Z0 = 50 Ω.
M
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
−43.0
0.0
−23.7
−59.6
−53.8
−97.6
≤100
−52.9
−42.2
−67.5
−59.3
≤100
≤100
0
1
−26.8
−59.8
−80.5
−68.2
−92.2
−93.7
≤100
≤100
−71.9
−67.6
−84.1
−79.3
−97.8
−96.1
≤100
≤100
2
3
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
4
≤100
≤100
≤100
≤100
≤100
5
6
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
N
7
8
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
9
10
11
12
13
14
15
≤100
≤100
≤100
≤100
≤100
≤100
Rev. 0 | Page 21 of 32
ADL5802
2600 MHz Performance
VS = 5 V, VSET = 4.5 V, TA = 25°C, RF power = 0 dBm, LO power = 0 dBm, fRF = 2600 MHz, fLO = 2350 MHz, Z0 = 50 Ω.
M
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
0
−37.9
0.0
−31.5
−62.6
−52.2
−88.7
≤100
−27.5
−75.5
−36.3
−65.8
−56.3
≤100
≤100
1
2
−59.7
−75.0
−68.8
−86.8
−82.5
≤100
−90.5
−92.1
−94.4
≤100
3
4
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
5
≤100
≤100
≤100
≤100
≤100
6
N
7
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
8
9
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
10
11
12
13
14
15
≤100
≤100
≤100
≤100
3500 MHz Performance
VS = 5 V, VS E T = 5 V, TA = 25°C, RF power = 0 dBm, LO power = 0 dBm, fRF = 3500 MHz, fLO = 3800 MHz, Z0 = 50 Ω.
M
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
−43.0
0.0
−23.7
−59.6
−53.8
−97.6
≤100
−52.9
−42.2
−67.5
−59.3
≤100
≤100
0
1
−26.8
−59.8
−80.5
−68.2
−92.2
−93.7
≤100
≤100
−71.9
−67.6
−84.1
−79.3
−97.8
−96.1
≤100
≤100
2
3
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
4
≤100
≤100
≤100
≤100
≤100
5
6
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
N
7
8
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
≤100
9
10
11
12
13
14
15
≤100
≤100
≤100
≤100
≤100
≤100
Rev. 0 | Page 22 of 32
ADL5802
5800 MHz Performance
VS = 5 V, VSET= 4.8 V, TA = 25°C, RF power = −10 dBm, LO power = 0 dBm, fRF = 5800 MHz, fLO = 5600 MHz, Z0 = 50 Ω.
M
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
−28.3
0.0
0
−63.6
−80.5
−48.6
1
−92.6
−64.2
2
3
−98.7
−90.5
−98.3
≤100
4
5
−99.4
−81.6
−98.0
−87.2
6
N
7
−95.9
−84.0
−99.5
≤100
8
≤100
≤100
9
10
11
12
13
14
15
≤100
≤100
≤100
≤100
−99.6
≤100
−99.8
≤100
Rev. 0 | Page 23 of 32
ADL5802
CIRCUIT DESCRIPTION
The ADL5802 provides two double-balanced active mixers.
These mixers are designed for a 50 Ω input impedance and a
200 Ω output impedance. Both are driven from a common local
oscillator (LO) amplifier. The RF inputs and LO outputs are
differential, providing maximum usable bandwidth at the input
and output ports. The LO also operates with a 50 Ω input
impedance and can, optionally, be operated differentially or
single-ended. The input, output, and LO ports can be operated
over an exceptionally wide frequency range. The ADL5802 can
be configured as a downconvert mixer or as an upconvert mixer.
RF VOLTAGE TO CURRENT (V-TO-I) CONVERTER
The differential RF input signal is applied to a voltage-to-current
converter that converts the differential input voltage to output
currents. The V-to-I converter provides a 50 Ω input
impedance. The V-to-I section bias current can be adjusted up
or down using the VSET pin. Adjusting the current up improves
IP3 and P1dB input but degrades SSB NF. Adjusting the current
down improves SSB NF but degrades IP3 and P1dB input. The
conversion gain remains nearly constant over a wide range of
VSET pin settings, allowing the part to be adjusted dynamically
without affecting the conversion gain. The current adjustment
can be made by connecting a resistor from the VSET pin to the
positive supply to increase the bias current or from the VSET
pin to ground to decrease the bias current. The VSET pin
impedance is approxi-mately 675 Ω in series with two diodes
and an internal current source.
The ADL5802 can be divided into the following sections: the
local oscillator (LO) amplifier and splitter, the RF voltage-to-
current (V-to-I) converter, the mixer cores, the output loads,
and the bias circuit. A simplified block diagram of the device is
shown in Figure 67. The LO block generates a pair of differential
LO signals to drive two mixer cores. The RF input is converted
into current by the V-to-I converters that then feed into the two
mixer cores. The internal differential load of the mixers is
designed for a wideband 200Ω output impedance from the
mixer. Reference currents to each section are generated by the
bias circuit, which can be enabled or disabled using the ENBL
pin. A detailed description of each section of the ADL5802
follows.
MIXER CORES
The ADL5802 has two double-balanced mixers that use high
performance SiGe NPN transistors. These mixers are based on
the Gilbert cell design of four cross-connected transistors.
MIXER LOAD
Each mixer load is designed to use a pair of 100 Ω resistors con-
nected to the positive supply. This provides a 200 Ω differential
output resistance. The mixer output should be pulled to the
positive supply externally using a pair of RF chokes or using an
output transformer with the center tap connected to the positive
supply. It is possible to exclude these components when the mixer
core current is low, but both P1dB and IP3 are then reduced.
VPOS RF1+ RF1– GND RF2+RF2–
24
23
22
21
20
19
1
2
3
4
18
17
16
15
GND
GND
GND
GND
OP2+
OP2–
OP1+
OP1–
The mixer load output can operate from direct current (dc) up to
approximately 500 MHz into a 200 Ω load. For upconversion
applications, the mixer load can be matched using off-chip
matching components. Transmit operation up to 2 GHz is
possible. See the Applications Information section for matching
circuit details.
GND
5
6
14 GND
IP3
ADL5802
BIAS
VPOS
13 VPOS
7
8
9
10
11
12
LOIN GND VSET
ENBL GND LOIP
BIAS CIRCUIT
Figure 67. ADL5802 Block Diagram
A band gap reference circuit generates the reference currents
used by the mixers. The bias circuit can be enabled and disabled
using the ENBL pin. If the ENBL pin is grounded or left open,
the part is enabled. Pulling the ENBL pin high shuts off the bias
circuit and disables the part. However, the ENBL pin does not
alter the current in the LO section and, therefore, does not
provide a true power-down feature. Certain configurations may
require the VSET pin to be connected to the positive supply
through a resistor. This will result in an increased mixer core
current. Unless this resistor to positive supply is removed, bias
current will continue to be supplied to the mixer core.
LO AMPLIFIER AND SPLITTER
The LO input is amplified using a broadband LNA and is then
split and followed by separate LO limiting amplifiers. The LNA
input impedance is nominally 50 Ω. The LO is designed to
accommodate a wide range of LO input power levels. The LO
input is conditioned by the series of amplifiers to provide a well
controlled and limited LO swing to the mixer core, resulting in
excellent IP3. The LO circuit exhibits low additive noise,
resulting in an excellent mixer noise figure and output noise
under RF blocking. For optimal performance, the LO inputs
should be driven differentially but at lower frequencies; single-
ended drive is acceptable.
Rev. 0 | Page 24 of 32
ADL5802
APPLICATIONS INFORMATION
BASIC CONNECTIONS
RF AND LO PORTS
The RF and LO input ports are designed for differential input
impedance of approximately 50 Ω. Figure 69 and Figure 70
illustrate the RF and LO interfaces, respectively. It is recommended
that each of the RF and LO differential ports be driven through a
balun for optimum performance. It is also necessary to ac-
couple both RF and LO ports with the proper size capacitors.
Table 4 lists the recommended components for various RF
frequency bands. The characterization data is available in the
Typical Performance Characteristics section.
The ADL5802 features dual channel mixers with a common
local oscillator (LO). The mixer is designed to translate between
radio frequencies (RF) and intermediate frequencies (IF). For
both upconversion and downconversion applications, RF1+
(Pin 23), RF1− (Pin 22), RF2+ (Pin 20), and RF2− (Pin 19)
must be configured as the input interfaces. OP1+ (Pin 3), OP1−
(Pin 4), OP2+ (Pin 16), and OP2− (Pin 15) must be configured
as the output interfaces. Figure 68 illustrates the basic connections
for ADL5802 operation.
RF1
RF2
T3
T5
C13
C14
C5
C12
VPOS
24
23
22
21
20
19
C8
C11
VPOS RF1+ RF1– GND RF2+ RF2–
1
2
3
4
5
6
GND
18
17
16
15
GND
GND
GND
VPOS
VPOS
IF1P
OP1+
OP1–
GND
OP2+
OP2–
C16
C15
ADL5802
T2
T4
IF2P
GND 14
VPOS
VPOS 13
VPOS
VPOS
C10
C7
C6
C9
GND
8
ENBL
7
LOIP LOIN GND VSET
9
10
11
12
VSET
C3
T1
C2
LO
Figure 68. Basic Connections Schematic
Rev. 0 | Page 25 of 32
ADL5802
RF1
RF2
frequency. A variety of suitable choke inductors is commercially
available from manufacturers such as Coilcraft and Murata. An
impedance transforming network may be required to transform
the final load impedance to 200Ω at the IF outputs.
T5
T3
C13 C14
C5 C12
23
22
21
20
19
RF1+ RF1– GND RF2+ RF2–
1
2
3
4
5
GND
GND
OP1+
OP1–
GND
ADL5802
VPOS
Figure 69. ADL5802 RF Interface
IF1P
C16
ADL5802
T4
ADL5802
ENBL GND LOIP LOIN GND
7
8
9
10
11
C3
T1
C2
18
17
16
15
GND
GND
LO
VPOS
T2
Figure 70. ADL5802 LO Interface
OP2+
OP2–
C15
ADL5802
Table 4. Suggested Components for the RF and LO Interfaces
IF2P
RF and LO
Frequency
C2, C3, C5,
C12, C13, C14
T1, T3, T5
GND 14
900 MHz
1900 MHz
2500 MHz
Mini-Circuits® TC1-1-13M+ 100 pF
Mini-Circuits TC1-1-13M+
100 pF
3 pF
Figure 71. Biasing the IF Port Open-Collector Outputs
Using a Center-Tapped Impedance Transformer
Johanson Technology
2500BL14M050
3500 MHz
5500 MHz
1.5 pF
3 pF
Johanson Technology
3600BL14M050
Johanson Technology
5400BL15B050
VPOS
1
2
3
4
5
GND
GND
OP1+
OP1–
GND
C17
L3
IF1 OUT+
Z
IF PORT
IMPEDANCE
TRANSFORMING
NETWORK
Z
= 200Ω
LOAD
ADL5802
L
The IF port features an open-collector differential output
interface. It is necessary to bias the open collector outputs using
one of the schemes presented in Figure 71 and Figure 72.
IF1 OUT–
L4
Figure 71 shows the use of center-tapped impedance transformers.
The turns ratio of the transformer should be selected to provide
the desired impedance transformation. In the case of a 50 Ω
load impedance, a 4:1 impedance ratio transformer should be
used to transform the 50Ω load into a 200 Ω differential load at
the IF output pins.
C18
VPOS
VPOS
C4
18
17
16
15
GND
GND
L2
Figure 72 shows a differential IF interface where pull-up choke
inductors are used to bias the open-collector outputs. The
shunting impedance of the choke inductors used to couple dc
current into the mixer core should be large enough at the IF
frequency of operation so as not to load down the output
current before it reaches the intended load. Additionally, the dc
current handling capability of the selected choke inductors
must be at least 45 mA. The self-resonant frequency of the
selected choke inductors must be higher than the intended IF
IF2 OUT+
IF2 OUT–
OP2+
OP2–
IMPEDANCE
TRANSFORMING
NETWORK
ADL5802
Z
Z
= 200Ω
L
LOAD
L1
GND 14
C1
VPOS
Figure 72. Biasing the IF Port Open-Collector Outputs
Using Pull-Up Choke Inductors
Rev. 0 | Page 26 of 32
ADL5802
EVALUATION BOARD
An evaluation board is available for the ADL5802. The standard evaluation board is fabricated using Rogers® RO3003 material. Each of
the RF, LO, and IF ports is configured for single-ended signaling via a balun transformer. The schematic for the evaluation board is shown
in Figure 73. Table 5 describes the various configuration options for the evaluation board. Layout for the board is shown in Figure 74 and
Figure 75.
RF1
RF2
T5
T3
VPOS
GND
C11
C8
R19
C13 C14
C5 C12
VPOS
VPOS1
24
VPOS RF1+ RF1– GND RF2+ RF2–
GND
23
22
21
20
19
VPOS
VPOS
C4
GND
1
2
3
4
5
6
18
C17
GND
GND
OP2+
OP2–
17
16
15
14
13
L2
L3
R2
IF1P
IF1N
R14
R16
IF2N
IF2P
OP1+
OP1–
GND
C16
R21
C15
T4
ADL5802
R7
L4
T2
R6
R15
R13
C1
R3
L1
R20
C10
GND
R10
C6
R12
C7
C18
VPOS
C9
VPOS
VPOS
VPOS
ENBL GND LOIP LOIN GND VSET
10 11 12
7
8
9
R9
R4
C2
R5
C3
T1
VPOS
VSET
R11
R22
R23
VPOS
LOP
ENBL1
R1
LO
LON
Figure 73. Evaluation Board Schematic
Table 5. Evaluation Board Configuration
Components Function
C1, C4, C6, C7, C8, C9, Power supply decoupling. Nominal supply decoupling
Default Conditions
C6, C7, C8 = 10 pF (size 0402)
C10, C11, C17, C18,
R10, R12, R19, R20,
R21
consists of a 0.01 µF capacitor to ground in parallel with 10
pF capacitors to ground, positioned as close to the device
as possible. Series resistors are provided for enhanced
supply decoupling using optional ferrite chip inductors.
C9, C10, C11 = 0.01 µF (size 0402)
C1, C4, C17, C18 = open (size 0402)
R10, R12, R19, R20, R21 = 0 Ω (size 0402)
C5, C12, C13, C14 = 100 pF (size 0402)
T3, T5 = TC1-1-13M+ (Mini-Circuits)
C5, C12, C13, C14, T3, RF Channel 1 and RF Channel 2 input interfaces. Input
T5, RF1, RF2
channels are ac-coupled through C5, C12, C13, and C14. T3
and T4 are 1:1 baluns used to interface to the 50 Ω
differential inputs.
C15, C16 = 100 pF (size 0402)
C15, C16, L1, L2, L3,
L4, R2, R3, R6, R7,
R13, R14, R15, R16,
R20, R21, T2, T4, IF1,
IF2
IF Channel 1 and IF Channel 2 output interfaces. The 200 Ω
open-collector IF output interfaces are biased through the
center taps of T2 and T4 4:1 impedance transformers. C15
and C16 provide local bypassing with R20 and R21 available
for additional supply bypassing. R6, R7, R13, R14, R15, and
R16 are provided for IF filtering and matching options.
L1, L2, L3, L4 = open (size 0805)
R2, R3, R13, R14, R15, R16, R20, R21 = 0 Ω (size 0402)
R6, R7 = open (size 0402)
T2, T4 = TC4-1W+ (Mini-Circuits)
C2, C3, R4, R5, T1, LO
R1, R9, R11, ENBL1
C2, C3 = 1 nF (size 0402)
R4, R5 = open (size 0402)
T1 = TC1-1-13M+ (Mini-Circuits)
R9 = 10 kΩ (size 0402); R1, R11 = open (size 0402)
Or R1 = 10 kΩ (size 0402);R9, R11 = open (size 0402)
Or R11 = 10 kΩ (size 0402); R1, R9 = open (size 0402)
ENBL1 = 3-pin header and shunt
LO interface. C2 and C3 provide ac coupling for the local
oscillator input. T1 is a 1:1 balun to allow single-ended
interfacing to the differential 50 Ω local oscillator input.
Enable interface. The ADL5802 can be disabled using the 3-
pin ENBL1 header. The ENBL pin is pulled up to VPOS
through R9. R1 is provided as an optional termination for
the high impedance enable interface. If desired, the ENBL
pin can be driven by an external source through the ENBL
SMA connector.
Rev. 0 | Page 27 of 32
ADL5802
Components
Function
Default Conditions
R22, R23, VSET
R22, R23 = open (size 0402)
VSET bias control. R22 and R23 form an optional resistor
divider network between VPOS and GND, allowing for a
fixed bias setting. See the Typical Performance
Characteristics section to choose the recommended VSET
control voltage for the desired frequency band.
EPAD (EP)
Exposed paddle. Must be soldered to ground.
Figure 74. Evaluation Board Top Layer
Figure 75. Evaluation Board Bottom Layer
Rev. 0 | Page 28 of 32
ADL5802
OUTLINE DIMENSIONS
0.60 MAX
4.00
BSC SQ
0.60 MAX
PIN 1
INDICATOR
1
24
19
18
0.50
BSC
PIN 1
INDICATOR
2.65
2.50 SQ
2.35
TOP
VIEW
3.75
BSC SQ
EXPOSED
PA D
(BOTTOMVIEW)
0.50
0.40
0.30
6
13
12
7
0.23 MIN
0.80 MAX
0.65 TYP
2.50 REF
1.00
0.85
0.80
12° MAX
0.05 MAX
0.02 NOM
FOR PROPER CONNECTION OF
THE EXPOSED PAD, REFER TO
THE PIN CONFIGURATION AND
FUNCTION DESCRIPTIONS
0.30
0.23
0.18
COPLANARITY
0.08
0.20 REF
SEATING
PLANE
SECTION OF THIS DATA SHEET.
COMPLIANT TO JEDEC STANDARDS MO-220-VGGD-8
Figure 76. 24-Lead Lead Frame Chip Scale Package [LFCSP_VQ]
4 mm × 4 mm Body, Very Thin Quad
(CP-24-3)
Dimensions shown in millimeters
ORDERING GUIDE
Temperature
Range
Model
Package Description
Package Option Ordering Quantity
ADL5802ACPZ-R71
ADL5802-EVALZ1
−40°C to +85°C
24-Lead Lead Frame Chip Scale Package [LFCSP_VQ] CP-24-3
Evaluation Board
1,500 per Reel
1
1 Z = RoHS Compliant Part.
Rev. 0 | Page 29 of 32
ADL5802
NOTES
Rev. 0 | Page 30 of 32
ADL5802
NOTES
Rev. 0 | Page 31 of 32
ADL5802
NOTES
©2009 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
D07882-0-11/09(0)
Rev. 0 | Page 32 of 32
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