Freescale Semiconductor
Technical Data
Document Number: MC13853
Rev. 1.8, 8/2008
MC13853
Package Information
Plastic Package
(QFN–16)
MC13853
Tri-Band Low Noise Amplifiers
with Bypass Switches
1
Introduction
The MC13853 is a SPI controlled, tri-band, high gain
LNA with extremely low noise figure, designed for
cellular band applications. Integrated bypass switches
are included to preserve input intercept performance.
The input and output match are external to allow
maximum design flexibility. The MC13853 is fabricated
using Freescale's advanced RF BiCMOS process using
the SiGe:C option and is packaged in the QFN-16
leadless package.
1.1
•
•
•
•
Ordering Information
Device
Device Marking or
Operating
Temperature Range
Package
MC13853
853
QFN-16
Contents
1
2
3
4
5
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Electrical Specifications . . . . . . . . . . . . . . . . 3
Application Information . . . . . . . . . . . . . . . . . 9
Packaging . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Product Documentation . . . . . . . . . . . . . . . . 25
Features
RF input frequency: 800 MHz to 2.4 GHz
Gain: 13.5 dB (typical) at 1960 MHz, 15 dB
(typical) at 2140 MHz, and 13.5 dB (typical) at
880 MHz
Input 3rd order intercept point (IIP3): -3 dBm
(typical) at 880 MHz, -4.0 dBm (typical) at 1960
MHz, and -3.0 dBm (typical) at 2140 MHz
Noise figure (NF): 1.5 dB (typical) at 880 MHz,
1.5 dB (typical) at 1960 MHz, and 1.6 dB
(typical) at 2140 MHz
This document contains information on a product under development. Freescale reserves the right to change or discontinue this
product without notice.
© Freescale Semiconductor, Inc., 2006 - 2008. All rights reserved.
Introduction
•
•
•
•
•
•
•
•
•
Current Settings are SPI controllable
Freescale’s IP3 boost circuitry
Bypass mode included for improved intercept point performance
Total supply current:
LB – 9.7 mA in current setting 6
HB1 – 9.2 mA in current setting 6
HB2 – 6.5 mA in current setting 2
10 µA (typical) in bypass mode
Bias stabilized for device and temperature variations
QFN-16 leadless package with low parasitics
SiGe technology ensures lowest possible noise figure
SPI controlled
At POR, all bands default to bypass mode. In deep sleep mode, all bands are set to disable mode.
800/900, 1800/1900 and 2100 MHz LNAs
QFN16
16 pin
3 x 3 x 0.85 mm
Package
LB Emit
16
LB LNA
OUT
15
GPO1
14
GPO2
13
LB 800/900
LNA IN
1
HB1 Emit
2
11
HB1 LNA
OUT
3
10
HB2 LNA
OUT
HB1 1800/1900
LNA IN
HB2 2100
LNA IN
12
Triband
LNA Die
4
9
SPI
5
6
7
8
HB2 Emit
SPI Data
SPI Clk
SPI Frm
Vcc
VDDauxSPI
Figure 1. Simplified Block Diagram
MC13853 Technical Data, Rev. 1.8
2
Freescale Semiconductor
Electrical Specifications
2
Electrical Specifications
Table 1. Maximum Ratings
Ratings
Symbol
Value
Unit
Supply Voltage
VCC
3.3
V
Storage Temperature Range
Tstg
-65 to 150
°C
Operating Ambient Temperature Range
TA
-30 to 85
°C
RF Input Power
Prf
10
dBm
Power Dissipation
Pdis
100
mW
Thermal Resistance, Junction to Case
RθJC
24
C/W
Thermal Resistance, Junction to Ambient, 4 Layer Board
RθJA
90
C/W
ESD Rating HBM RF Pins
100
V
ESD Rating HBM non-RF Pins
550
V
NOTES: 1. Maximum Ratings are those values beyond which damage to the device may occur.
Functional operation should be restricted to the limits in the Recommended Operating
Conditions and Electrical Characteristics tables.
Table 2. Recommended Operating Conditions
Characteristic
RF Frequency Range
Supply Voltage
Symbol
Minimum
fRF
800
VCC
VDDauxSPI
2.6
1.5
1.25
0
Logic Voltage
Input High Voltage
Input Low Voltage
Typical
Maximum
Unit
2400
MHz
2.775
1.8
3
2.1
V
–
–
VCC
0.8
V
NOTES: 1.Supply voltage Vcc must be on before VDDauxSPI.
Table 3. Electrical Characteristics in Frequency Specific Tuned Circuits
(VCC = 2.775 V, 25°C)
Characteristic
Symbol
Minimum
Typical
Maximum
Unit
Frequency
f
869
880
894
MHz
Active Gain
Band V
Band VI
G
12.5
12.5
13.5
13.5
14.5
14.5
Active Noise Figure
NF
–
1.4
1.5
dB
Active Input Third Order Intercept Point
IIP3
-3
-2.5
–
dBm
Active Input 1 dB Compression Point
P1dB
-9.5
-9
–
dBm
ICC
–
8.6
10.2
mA
880 MHz (Refer to Figure 4)
Active Current @ 2.75 V in current setting 6
dB
MC13853 Technical Data, Rev. 1.8
Freescale Semiconductor
3
Electrical Specifications
Table 3. Electrical Characteristics in Frequency Specific Tuned Circuits (continued)
(VCC = 2.775 V, 25°C)
Characteristic
Bypass Gain
Bypass Input Third Order Intercept Point
Symbol
Minimum
Typical
Maximum
Unit
G
-10
-9.5
–
dB
IIP3
16
22
–
dBm
–
10
20
µA
Bypass Current
950 MHz (Refer to Figure 5)
Frequency
f
925
950
960
MHz
Active Gain
G
11.0
12.0
13.0
dB
Active Noise Figure
NF
–
1.45
1.5
dB
Active Input Third Order Intercept Point
IIP3
-3
-2.5
–
dBm
Active Input 1 dB Compression Point
P1dB
-9
-8.5
–
dBm
ICC
–
8.6
10.2
mA
G
-10
-9.5
–
dB
IIP3
16
22
–
dBm
–
10
20
µA
Active Current @ 2.75 V in current setting 6
Bypass Gain
Bypass Input Third Order Intercept Point
Bypass Current
1850 MHz (Refer to Figure 6)
Frequency
f
1805
1850
1880
MHz
Active Gain
G
12.5
13.5
14.5
dB
Active Noise Figure
NF
–
1.55
1.6
dB
Active Input Third Order Intercept Point
IIP3
-3
-2.5
–
dBm
Active Input 1 dB Compression Point
P1dB
-12.5
-11.7
–
dBm
ICC
–
7.8
9.7
mA
G
-9.5
-9
–
dB
IIP3
16
22
–
dBm
–
10
20
µA
Active Current @ 2.75 V in current setting 6
Bypass Gain
Bypass Input Third Order Intercept Point
Bypass Current
1960 MHz (Refer to Figure 7)
Frequency
f
1930
1960
1990
MHz
Active Gain
G
12.5
13.5
14.5
dB
Active Noise Figure
NF
–
1.55
1.6
dB
Active Input Third Order Intercept Point
IIP3
-3
-2.5
–
dBm
Active Input 1 dB Compression Point
P1dB
-12.5
-12
–
dBm
ICC
–
7.8
9.7
mA
G
-9.5
-9
–
dB
IIP3
20
22
–
dBm
–
10
20
µA
Active Current @ 2.75 V in current setting 6
Bypass Gain
Bypass Input Third Order Intercept Point
Bypass Current
MC13853 Technical Data, Rev. 1.8
4
Freescale Semiconductor
Electrical Specifications
Table 3. Electrical Characteristics in Frequency Specific Tuned Circuits (continued)
(VCC = 2.775 V, 25°C)
Characteristic
Symbol
Minimum
Typical
Maximum
Unit
Frequency
f
2110
2140
2170
MHz
Active Gain
G
14
15
16
dB
Active Noise Figure
NF
–
1.55
1.6
dB
Active Input Third Order Intercept Point
IIP3
-3
-2.5
–
dBm
Active Input 1 dB Compression Point
P1dB
-12
-11
–
dBm
ICC
–
6.0
7.0
mA
G
-6.5
-6
–
dB
IIP3
20
22
–
dBm
–
10
20
µA
2140 MHz (Refer to Figure 8)
Active Current @ 2.75 V in current setting 2
Bypass Gain
Bypass Input Third Order Intercept Point
Bypass Current
Table 4. Electrical Characteristics Over Temperature (-30°C to 85°C)
Characteristic
Symbol
High Gain Mode Current
Minimum
Maximum
Icc
mA
LNA1 HB2
–
8.3
LNA2 HB1
–
11.5
LNA3 LB
–
10.2
Bypass Mode Current
Icc
Active Gain Variation Across Temperature
G
30
-1.0
+0.5
-30°C relative to 25°C
-0.5
+1.0
G
dB
85°C relative to 25°C
-1.0
+0.5
-30°C relative to 25°C
-0.5
+1.0
NF
Active Input Third Order Intercept relative to
25°C
IIP3
µA
dB
85°C relative to 25°C
Noise Figure relative to 25°C
Unit
-2.0
+0.4
dB
–
dBm
MC13853 Technical Data, Rev. 1.8
Freescale Semiconductor
5
Electrical Specifications
Table 5. Truth Table for SPI Operation
Mode
Gain Bit
Enable Bit
Active
1
1
Bypass Gain
0
0
Disable
1
0
Not Used
0
1
Note: At power on reset (POR), the mode is set to
bypass gain on all LNAs.
Table 6. SPI Programmable Current Draw (25°C)
SPI bit
Typical Current (mA)
Current 0 LNA 1 HB2 LNA 2 HB1
LNA3 LB
Current
Setting
Current 2
Current 1
0
0
0
7.4
8.0
8.6
0
0
0
1
4.4
4.5
5.0
1
0
1
0
5.3
5.6
6.2
2
0
1
1
9.1
9.8
10.8
3
1
0
0
1.8
2.2
2.0
4
1
0
1
6.2
6.5
7.2
5
1
1
0
7.1
7.7
8.3
6
1
1
1
9.8
11.0
11.9
7
Default current setting shown in gray for each band
Table 7. Maximum Current
25°C
-30°C to 85°C
Unit
Deep Sleep Mode - Vcc on and VDDauxSPI off
1
5
µA
VDDauxSPI during a read operation
400
400
µA
MC13853 Technical Data, Rev. 1.8
6
Freescale Semiconductor
Electrical Specifications
SPI bit word
16
17
Bit #
29
21
1
20
0
19
0
18
17
16
15
14
13
Device is Iota
LNA Selector PA4
LNA Selector PA3
LNA Selector PA2
LNA Selector PA1
LNA Selector PA0
0
0
0
1
0
0
1
0
0
1
0
0
Not Variable
Write / Read Bit
Variable
28
1
27
0
26
1
25
0
24
0
23
0
22
0
Write
0
Read
1
LNA Selector
LNA1 HB2
LNA2 HB1
LNA3 LB
GPO (Ext LNA)
Active
Mode Selector
Bypass
Disable
Not Used
Current Selector LNA1 HB2
(default)
LNA2 HB1
LNA3 LB
18 19 20 21
Data Structure
12
11
10
9
22
23
24
25
26
27
28
29
30
8
7
6
5
4
3
2
1
0
Gain
15
Enable
14
Current 0
13
Current 1
12
Current 2
11
Device is Iota
10
Device is Iota
9
Device is Iota
8
Device is Iota
7
Device Type is LNA
6
Device Type is LNA
1
2
3
4
5
Address structure
Device Type is LNA
Clock
1
0
0
1
1
0
1
0
SPI Data
1
1
1
0
0
0
GPO1
Active
Bypass
Disable
Disable
GPO2
Mode Selector
for GPO
(External LNA)
0
1
1
1
1
0
0
1
0
0
1
3
2
Read Mode
Not Variable
Address structure
29 28 27 26 25
1
0
1
0
24
0
23
0
22
0
21
1
20
0
19
0
18
17
16
Variable
SPI Data
Read
1
LNA Selector
For Hardware Read
0
1
1
one extra clock cycle in read mode
Bit #
15
14
13
Data Structure
12 11 10 9
8
7
6
5
4
1
0
HID HID HID HID HID HID HID HID HID
8
7
6
5
4
3
2
1
0
Figure 2. SPI Bit Word
MC13853 Technical Data, Rev. 1.8
Freescale Semiconductor
7
Electrical Specifications
Table 8. SPI Used for Dual-, Tri-, and Quad-Band Configurations
SPI Inputs
LNA Selector
PATH #
Dual- or Tri-band
Tri-band LNA #1
Config
Bit Bit
PA2 PA1 PA0
22 21
Enable Gain
D2
D1
1
0
1
0
0
0
1
1
1
0
1
0
0
0
0
0
1
0
1
0
0
0
0
2
0
1
0
0
1
2
0
1
0
0
2
0
1
0
3
0
1
3
0
3
0
Outputs
GPO1
GPO2
Mode
No Connect No Connect
LNA1 Active
1
LNAs 1,
2, and 3
No Connect No Connect LNA1 Bypass or LNAs
1 and 2
No Connect No Connect
LNA1 Off
1
1
No Connect No Connect
LNA2 Active
1
0
0
No Connect No Connect LNA2 Bypass
0
1
0
1
No Connect No Connect
LNA2 Off
0
1
0
1
1
No Connect No Connect
LNA3 Active
1
0
1
0
0
0
No Connect No Connect LNA3 Bypass
1
0
1
0
0
1
No Connect No Connect
LNA 3 Off
Note: This is an SPI-controlled, tri-band MC13853 LNA.
Quadband
Config
Tri-band
LNA #1
Single
LNA
1
0
1
0
0
0
1
1
To Ext LNA
To Ext LNA
LNA1 Active
To Ext LNA
LNAs 1,
2, 3, and
To Ext LNA LNA1 Bypass
4
1
0
1
0
0
0
0
0
1
0
1
0
0
0
0
1
To Ext LNA
To Ext LNA
LNA1 Off
2
0
1
0
0
1
1
1
To Ext LNA
To Ext LNA
LNA2 Active
2
0
1
0
0
1
0
0
To Ext LNA
To Ext LNA LNA2 Bypass
2
0
1
0
0
1
0
1
To Ext LNA
To Ext LNA
LNA2 Off
3
0
1
0
1
0
1
1
To Ext LNA
To Ext LNA
LNA3 Active
3
0
1
0
1
0
0
0
To Ext LNA
To Ext LNA LNA3 Bypass
3
0
1
0
1
0
0
1
To Ext LNA
To Ext LNA
LNA3 Off
4
0
1
1
0
0
1
1
NA
NA
LNA4 Active
4
0
1
1
0
0
1
0
NA
NA
LNA4 Bypass
4
0
1
1
0
0
0
0
NA
NA
LNA4 Off
Note: This is one SPI-controlled, tri-band MC13853 LNA and one external LNA (not a MC13853) controlled by GPO from the
MC13853 LNA.
The different banding LNA combinations are:
• Dual band (using one MC13853)
• Tri-band (using one MC13853)
• Quad-band (using one MC13853 and one single-band GPO-controlled external LNA (not a MC13853))
MC13853 Technical Data, Rev. 1.8
8
Freescale Semiconductor
Application Information
3
Application Information
The MC13853 SiGe:C LNA is designed for applications in the 800 MHz to 2.1 GHz range. It has three
different modes: High Gain, Low Gain (Bypass) and Disabled. The IC mode is programmable through the
Gain and Enable bits. The current setting is also SPI programmable. The logic truth table is given in
Table 5.
In these application examples a balance is made between the competing RF performance characteristics of
ICC, NF, gain, IP3 and return losses with unconditional stability. Conjugate matching is not used for the
input or output. Instead, matching which achieves a trade-off in RF performance qualities is utilized. For
a particular application or spec requirement, the matching can be changed to achieve enhanced
performance of one parameter at the expense of other parameters.
Application information for 880, 950, 1800, 1960, and 2140 MHz are shown. Measurements are made at
a bias of VCC = 2.775 V. Freq. spacing for IP3 measurements is 800 kHz for 2G and 10 MHz for 3GPP.
The board loss corrections for these boards are: Input 0.16 dB, Output 0.2 dB. NF results incorporate these
corrections in order to better reflect the actual performance of the device.
Two MC13853 devices can also be used with common SPI control lines for a quad-band application, as
shown in Figure 3. In this application, LB and HB1 are used on LNA1 and HB2 is used on LNA2. In
active mode, both LNAs are active, but only one is connected in the circuit. Depending on which band is
selected in the connected LNA, the corresponding un-connected LNA which would also become active
when the SPI command is sent to the connected LNA will draw
