AKM AK1221

[AK1221]
AK1221
3500MHz High Linearity Mixer
1. Overview
The AK1221 is high linearity mixer. RF and Lo frequency range coverage is from 700 to 3500MHz and IF coverage
is from 20 to 200MHz. The RF input provides single-ended 50Ω interface. Lo ports are 50Ω matched and
complementary input should be decoupled to the ground. IF output ports are differential open drain outputs. The
linearity and power consumption performances can be optimized by the resistance connected to the BIAS Pin.
2. Features

Operating Frequency:

Linearity vs. Power selectable architecture
700MHz to 3500MHz
Power Consumption: 45mA, IIP3: +25dBm, Gain: -0.5dB, NF: 14dB

Lo input level:
0dBm ±5dB

Operating Supply Voltage:
4.75 to 5.25 V

Package:
16pin UQFN (0.5mm pitch, 3mm  3mm  0.60mm)

Operating Temperature Range:
-40 to 85C
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3. Table contents
1.
Overview _____________________________________________________ 1
2.
Features _____________________________________________________ 1
3.
Table contents ________________________________________________ 2
4.
Block Diagram ________________________________________________ 3
5.
System Diagram _______________________________________________ 4
6.
Pin Functional Description ______________________________________ 5
7.
Absolute Maximum Ratings______________________________________ 7
8.
Recommended Operating Range _________________________________ 7
9.
Electrical Characteristics ________________________________________ 8
10. Typical Performance ___________________________________________ 9
11. Typical Evaluation Board Schematic _____________________________ 16
12. LSI Interface Schematic ________________________________________ 18
13. Outer Dimensions _____________________________________________ 19
14. Marking _____________________________________________________ 20
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BIAS
4. Block Diagram
LOINP
Iref
Lo Buffer
LOINN
IFOUTP
RFIN
Mixer
Fig. 1
MS1400-E-02
VSS
VDD
IFOUTN
Block Diagram
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[AK1221]
5. System Diagram
AK1221
Current Adjustment
Resistor
22kΩ to 56kΩ
VSS
LO Input
VDD
(Powerfeeding for
Open-drain Output)
BIAS
LOINP
LO Buffer
Iref
10nF
100pF
LOINN
VSS
IFOUTP
Mixer
RF Input
Output Load
Resistor
680Ω
VSS
BALUN
IF Output
RFIN
IFOUTN
RF Input
Impedance
Matching
VDD
VSS
IF Input
Impedance
Matching
VSS
100pF
VSS
10nF
VDD
VSS
Fig. 2
MS1400-E-02
System Diagram
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[AK1221]
6. Pin Functional Description
Table 1
No.
Name
I/O
1
RFIN
AI
RF Input
2
VSS
G
Ground pin
3
VSS
G
Ground pin
4
LOINN
AI
Lo Input Negative
5
LOINP
AI
Lo Input Positive
6
VDD
P
Power Supply
7
VDD
P
Power Supply
8
VDD
P
Power Supply
9
VDD
P
Power Supply
10
BIAS
AIO
Pin Function
Pin Functions
Resistance pin for current
Remarks
Connecting an inductor between this pin and ground.
Connecting a resistor between this pin and ground.
adjustment
11
IFOUTN
AO
IF Output Negative
This pin is open drain output.
It needs power feeding via an inductor.
12
IFOUTP
AO
IF Output Positive
This pin is open drain output.
It needs power feeding via an inductor.
13
VSS
G
Ground pin
14
VSS
G
Ground pin
15
VSS
G
Ground pin
16
VSS
G
Ground pin
Note)
The exposed pad at the center of the backside should be connected to ground.
AI : Analog input pin
P : Power supply pin
MS1400-E-02
AO : Analog output pin
G : Ground pin
AIO : Analog I/O pin
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VSS
15
VSS
16
IFOUTN
BIAS
VDD
9
TOP
VIEW
1
2
3
4
LOINN
14
10
VSS
VSS
11
VSS
13
12
RFIN
VSS
IFOUTP
[AK1221]
Fig. 3
MS1400-E-02
8
VDD
7
VDD
6
VDD
5
LOINP
Package Pin Layout
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[AK1221]
7. Absolute Maximum Ratings
Table 2
Parameter
Symbol
Absolute Maximum Ratings
Min.
Max.
Unit
-0.3
5.5
V
Supply Voltage
VDD
RF Input Power
RFPOW
12
dBm
LO Input Power
LOPOW
12
dBm
Storage Temperature
Tstg
125
C
-55
Remarks
Exceeding these maximum ratings may result in damage to the AK1221. Normal operation is not guaranteed at
these extremes.
8. Recommended Operating Range
Table 3
Parameter
Symbol
Min.
Operating
Temperature
Ta
-40
Supply Voltage
VDD
4.75
Recommended Operating Range
Typ.
5
Max.
Unit
85
C
5.25
V
Remarks
The specifications are applicable within the recommended operating range (supply voltage/operating temperature).
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9. Electrical Characteristics
1．Analog Circuit Characteristics
Unless otherwise noted IF output=150MHz, Lo Input Level=-5dBm to +5dBm,
Output Load Resistor （RLoad）=680Ω, VDD=4.75 to 5.25V, Ta=-40C to 85C
Parameter
Min.
Typ.
Max.
Unit
RF Input Frequency
700
3500
MHz
Lo Input Frequency
700
3500
MHz
IF output Frequency
20
200
MHz
Lo Input Power
-5
+5
dBm
Current Adjustment Resistor(BIAS)
22
56
kΩ
IDD
0
Remarks
BIAS=22kΩ
64
87
mA
The total current of VDD
BIAS=33kΩ
45
64
mA
pin,
BIAS=56kΩ
30
44
mA
IFOUTN pin.
IFOUTP
pin
and
RFIN=2500MHz, Current Adjustment Resistor =33kΩ
Conversion Gain
-2.5
SSB Noise Figure
-0.5
1.5
dB
14
16.5
dB
IP1dB
7
10
dBm
IIP3
21
25
dBm
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Design guarantee value
Design guarantee value
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[AK1221]
10. Typical Performance
Unless otherwise noted, RF input =2500MHz, Lo input =2350MHz, IF output =150MHz,
Output Load Resistor (RLoad)=680
Current Adjustment Resistor vs. IIP, NF, P1dB, Gain, IDD
30
20
28
19
26
18
24
17
22
16
NF [dB]
IIP3 [dBm]
1.
20
18
15
14
16
13
14
12
12
11
10
10
22
27
32
37
42
47
52
22
27
32
R_Bias[kohm]
37
42
47
52
47
52
R_Bias[kohm]
14
5
4
12
2
8
1
Gain [dB]
IP1dB [dBm]
3
10
6
0
-1
-2
4
-3
2
-4
0
-5
22
27
32
37
42
47
52
22
R_Bias[kohm]
27
32
37
42
R_Bias[kohm]
100
90
80
IDD [mA]
70
60
50
40
30
20
10
22
27
32
37
42
47
52
R_Bias[kohm]
Fig. 4 Current Adjustment Resistor vs. IIP3, NF, P1dB, Gain, IDD
Note ) A resistor with 5% tolerance are used.
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Over temperature vs. IIP3, NF, P1dB, Gain, IDD
30
20
28
19
26
18
24
17
22
16
NF [dB]
IIP3 [dBm]
2.
20
18
15
14
16
13
14
12
12
11
10
10
-40
10
60
-40
10
Temp[℃]
60
Temp[℃]
14
5
12
4
3
2
8
Gain [dB]
IP1dB [dBm]
10
6
4
1
0
-1
-2
-3
2
-4
0
-40
10
-5
60
-40
Temp[℃]
10
60
Temp[℃]
80
70
IDD [mA]
60
50
40
30
20
Resistance for current adjustment
10
22kohm
0
-40
10
60
33kohm
Temp[℃]
56kohm
Fig. 5 Over temperature vs. IIP3, NF, IP1dB, Gain, IDD
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[AK1221]
Supply voltage vs. IIP3, NF, P1dB, Gain, IDD
30
20
28
19
26
18
24
17
22
16
NF [dB]
IIP3 [dBm]
3.
20
18
15
14
16
13
14
12
12
11
10
10
4.75
4.85
4.95
5.05
5.15
5.25
4.75
4.85
VDD[V]
5.05
5.15
5.25
5.05
5.15
5.25
VDD[V]
5
14
4
12
3
10
2
8
1
Gain [dB]
IP1dB [dBm]
4.95
6
0
-1
-2
4
-3
2
-4
-5
0
4.75
4.85
4.95
5.05
5.15
4.75
5.25
4.85
4.95
VDD[V]
VDD[V]
70
60
IDD [mA]
50
40
30
20
Resistance for current adjustment
10
22kohm
0
4.75
4.85
4.95
5.05
5.15
33kohm
5.25
VDD[V]
56kohm
Fig. 6 Supply voltage vs. IIP3, NF, IP1dB, Gain, IDD
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[AK1221]
RF input frequency vs. IIP3, NF, Gain
30
20
28
19
26
18
24
17
22
16
NF [dB]
IIP3 [dBm]
4.
20
18
15
14
16
13
14
12
12
11
10
10
700
1200
1700
2200
2700
3200
700
1200
1700
2200
2700
3200
RF [MHz]
15
5
14
4
13
3
12
2
11
1
Gain [dB]
IP1dB [dBm]
RF [MHz]
10
9
0
-1
8
-2
7
-3
6
-4
-5
5
700
1200
1700
2200
2700
700
3200
1100
1500
1900
2300
2700
3100
3500
RF [MHz]
RF [MHz]
Resistance for current adjustment
22kohm
33kohm
56kohm
Fig. 7
MS1400-E-02
RF input frequency vs. IIP3, NF, Gain
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[AK1221]
5.
IF input frequency vs. IIP3, NF, Gain
30
20
28
19
26
18
17
22
NF [dB]
IIP3 [dBm]
24
20
18
16
16
15
14
14
13
12
10
12
20
40
60
80
100
120
140
160
180
200
20
40
60
80
100
120
140
160
180
200
140
160
180
200
IF [MHz]
15
5
14
4
13
3
12
2
11
1
Gain [dB]
IP1dB [dBm]
IF [MHz]
10
9
0
-1
8
-2
7
-3
6
-4
-5
5
20
40
60
80
100
120
140
160
180
20
200
40
60
80
100
120
IF [MHz]
IF [MHz]
Resistance for current adjustment
22kohm
33kohm
56kohm
Fig. 8
MS1400-E-02
IF input frequency vs. IIP3, NF, Gain
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[AK1221]
Lo input power vs. IIP3, NF, Gain
30
20
28
19
26
18
24
17
22
16
NF [dB]
IIP3 [dBm]
6.
20
18
15
14
16
13
14
12
12
11
10
10
-10
-5
0
5
10
-10
-5
LO input[dBm]
5
10
5
10
5
14
4
12
3
10
2
8
1
Gain [dB]
IP1dB [dBm]
0
LO input[dBm]
6
0
-1
-2
4
-3
2
-4
-5
0
-10
-5
0
5
-10
10
-5
0
LO input[dBm]
LO input[dBm]
Resistance for current adjustment
22kohm
33kohm
56kohm
Fig. 9
MS1400-E-02
Lo input power vs. IIP3, NF, Gain
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[AK1221]
Output Load Resistor（RLoad） vs. IIP3, NF, Gain
30
28
26
24
22
20
18
16
14
12
10
18
17
16
NF [dB]
IIP3 [dBm]
7.
15
14
13
12
430
480
530
580
630
680
730
780
430
480
530
580
RL [ohm]
17
Gain [dB]
IP1dB [dBm]
15
13
11
9
7
5
480
530
580
630
680
730
780
680
730
780
RL [ohm]
19
430
630
680
730
5
4
3
2
1
0
-1
-2
-3
-4
-5
430
780
480
530
580
630
RL [ohm]
RL [ohm]
Resistance for current adjustment
22kohm
33kohm
56kohm
Fig. 10
8.
Output Load Resistor（RLoad） vs. IIP3, NF, Gain
Leakage
RFIN=2500MHz,-20dBm,LO input=2350MHz,0dBm,RLoad=680,Ta=25℃ VDD=5V
Parameter
RF – LO Leakage
RF – IF Leakage
LO – RF Leakage
LO – IF Leakage
MS1400-E-02
BIAS
Typ.
Unit
22k
-36
dBc
56k
-36
dBc
22k
-61
dBc
56k
-57
dBc
22k
-44
dBc
56k
-44
dBc
22k
-58
dBc
56k
-66
dBc
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[AK1221]
11. Typical Evaluation Board Schematic
1. Typical Evaluation Board Schematic
Current Adjustment
Resistor
22kΩ to 56kΩ
AK1221
VSS
LO Input
VDD
(Powerfeeding for
Open-drain Output)
BIAS
LOINP
LO Buffer
Iref
10nF
100pF
LOINN
VSS
IFOUTP
Mixer
RF Input
Output Load
Resistor
680Ω
VSS
BALUN
IF Output
RFIN
IFOUTN
RF Input
Impedance
Matching
VDD
VSS
IF Input
Impedance
Matching
VSS
100pF
VSS
10nF
VDD
VSS
Fig.11 Typical Evaluation Board Schematic
Note 1)
The open drain output needs power feeding via a inductor. (IFOUTP pin and IFOUTN pin)
Note 2)
It is necessary to adjust impedance matching as to its setting frequency. (RF input and IF output)
2. Example of impedance matching
2 -1 RFIN
RF Input
C1
C2
L1
L2
RFIN
AK1221
Frequency[MHz]
C1[pF]
C2[pF]
L1[nH]
L2[nH]
Impedance[ohm]
700
none
20
none
39
42.9 - j5.4
2500
39
2.2
1.8
10
61.2 - j12.8
3500
39
1.0
1.0
10
40.7 - j5.1
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[AK1221]
2 - 2 IFOUT
VDD (Powefeeding for Open-drain Output)
10nF
100pF
Output Load Resistor VSS
RLoad
L1
AK1221
BALUN
IF Output
IFOUTP
R1
C2
C1
IFOUTN
L2
VSS
Frequency [MHz]
20
150
200
R1 [ohm]
C1 [pF]
680
C2 [pF]
15
680
1
680
L1 [nH]
none
None
none
none
1200
*1
180
*2
*2
150
L2 [nH]
1200
180
150
*1
*2
*2
Impedance[ohm]
56.6 – j4.5
52.6 – j1.6
47.0 – j11.9
*1)Murata LQW21A series
*2)Murata LQW18A series
2 – 3 LOINP/LOINN
LO Input
LOINP
39pF
LOINN
AK1221
39pF
VSS
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[AK1221]
12. LSI Interface Schematic
No.
Name
I/O
Function
1
RFIN
I
RF Input pin
4
LOINN
I
Lo Input pins
5
LOINP
10
BIAS
I/O
Analog I/O pin
300Ω
11
IFOUTN
12
IFOUTP
O
IF Output pins
IFOUTP
IFOUTN
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[AK1221]
13. Outer Dimensions
1 pin marking
(Note 1)
1
4
16
5
8
13
12
9
Fig.12 Outer Dimensions
Note 1. 1 pin marking is only a reference for the 1 pin location on the top of package.
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14. Marking
(a) Style
:
UQFN
(b) Number of pins
:
16
(c) 1 pin marking:
:
○
(d) Product number
:
1221
(e) Date code
:
YWWL (4 digits)
Y:
Lower 1 digit of calendar year (Year 2012 → 2, 2013 → 3 ...)
WW :
Week
L:
Lot identification, given to each product lot which is made in a week
 LOT ID is given in alphabetical order (A, B, C…).
1221(d)
YWWL (e)
(c)
Fig. 13 Marking
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[AK1221]
IMPORTANT NOTICE
0. Asahi Kasei Microdevices Corporation (“AKM”) reserves the right to make changes to
the information contained in this document without notice. When you consider any use
or application of AKM product stipulated in this document (“Product”), please make
inquiries the sales office of AKM or authorized distributors as to current status of the
Products.
1. All information included in this document are provided only to illustrate the operation
and application examples of AKM Products. AKM neither makes warranties or
representations with respect to the accuracy or completeness of the information
contained in this document nor grants any license to any intellectual property rights
or any other rights of AKM or any third party with respect to the information in this
document. You are fully responsible for use of such information contained in this
document in your product design or applications. AKM ASSUMES NO LIABILITY
FOR ANY LOSSES INCURRED BY YOU OR THIRD PARTIES ARISING FROM THE
USE OF SUCH INFORMATION IN YOUR PRODUCT DESIGN OR APPLICATIONS.
2. The Product is neither intended nor warranted for use in equipment or systems that
require extraordinarily high levels of quality and/or reliability and/or a malfunction or
failure of which may cause loss of human life, bodily injury, serious property damage
or serious public impact, including but not limited to, equipment used in nuclear
facilities, equipment used in the aerospace industry, medical equipment, equipment
used for automobiles, trains, ships and other transportation, traffic signaling
equipment, equipment used to control combustions or explosions, safety devices,
elevators and escalators, devices related to electric power, and equipment used in
finance-related fields. Do not use Product for the above use unless specifically agreed
by AKM in writing.
3. Though AKM works continually to improve the Product’s quality and reliability, you
are responsible for complying with safety standards and for providing adequate
designs and safeguards for your hardware, software and systems which minimize risk
and avoid situations in which a malfunction or failure of the Product could cause loss
of human life, bodily injury or damage to property, including data loss or corruption.
4. Do not use or otherwise make available the Product or related technology or any
information contained in this document for any military purposes, including without
limitation, for the design, development, use, stockpiling or manufacturing of nuclear,
chemical, or biological weapons or missile technology products (mass destruction
weapons). When exporting the Products or related technology or any information
contained in this document, you should comply with the applicable export control laws
and regulations and follow the procedures required by such laws and regulations. The
Products and related technology may not be used for or incorporated into any products
or systems whose manufacture, use, or sale is prohibited under any applicable
domestic or foreign laws or regulations.
5. Please contact AKM sales representative for details as to environmental matters such
as the RoHS compatibility of the Product. Please use the Product in compliance with
all applicable laws and regulations that regulate the inclusion or use of controlled
substances, including without limitation, the EU RoHS Directive. AKM assumes no
liability for damages or losses occurring as a result of noncompliance with applicable
laws and regulations.
6. Resale of the Product with provisions different from the statement and/or technical
features set forth in this document shall immediately void any warranty granted by
AKM for the Product and shall not create or extend in any manner whatsoever, any
liability of AKM.
7. This document may not be reproduced or duplicated, in any form, in whole or in part,
without prior written consent of AKM.
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