F2923NCGI [RENESAS]
Constant Impedance K|Z| SP2T RF Switch 300 kHz to 8000 MHz;
| 型号： | F2923NCGI |
| 厂家： | 
RENESAS TECHNOLOGY CORP |
| 描述： | Constant Impedance K|Z| SP2T RF Switch 300 kHz to 8000 MHz |
| 文件： | 总22页 (文件大小：3673K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
F2923
Datasheet
Constant Impedance
K
|Z| SP2T RF Switch
300 kHz to 8000 MHz
GENERAL DESCRIPTION
FEATURES
The F2923 is a low insertion loss 50ꢀ SP2T absorptive
RF Switch designed for a multitude of wireless and
other RF applications. This device covers a broad
frequency range from 300 kHz to 8000 MHz. In
addition to providing low insertion loss, industry
leading isolation at 2 GHz and excellent linearity, the
F2923 also includes a patent pending constant
impedance (KZ) feature. KZ minimizes LO pulling in
VCOs and reduces phase and amplitude variations in
distribution networks. It is also ideal for dynamic
switching/selection between two or more amplifiers
while avoiding damage to upstream/downstream
sensitive devices such as PAs and ADCs.
•
•
•
•
•
•
•
•
•
•
•
Constant Impedance K|Z| during transition
Very low insertion loss: 0.48 dB @ 2 GHz
High Input IP3: 66 dB @ 2 GHz
RF1/RF2 to RF_Com Isolation: 74 dB @ 2 GHz
1ꢁpin or 2ꢁpin device control option
Low DC current: 127 µA using 3.3 V logic
Supply voltage: 3.3 V
Supports 1.8 V and 3.3 V control logic
Extended temperature: ꢁ55 °C to +105 °C
4 mm x 4 mm, 20ꢁpin TQFN package
Pin compatible with F2912
FUNCTIONAL BLOCK DIAGRAM
The F2923 uses a single positive supply voltage of
3.3 V supporting three states using either 3.3 V or
1.8 V control logic. An added feature includes a
ModeCTL pin allowing the user to control the device
with either 1ꢁpin or 2ꢁpin control.
Mode CTL
CTL Pins
COMPETITIVE ADVANTAGE
50Ω
50Ω
The F2923 provides constant impedance on all ports
during transitions without compromising isolation,
linearity, or insertion loss.
RF1
RF2
50Ω
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
Constant impedance K|Z| during switching transition
VSWR RF_Com port 1.4:1 vs. 9:1 for Standard Switch
Insertion Loss = 0.48 dB*
IIP3: +66 dBm*
RF_COM
RF1/RF2 to RF_COM Isolation = 74 dB*
Extended temperature: ꢁ55 °C to +105 °C
Negative supply voltage not required
*2 GHz
ORDERING INFORMATION
Tape &
Reel
F2923NCGI8
APPLICATIONS
•
•
•
•
•
•
•
•
•
•
•
•
Base Station 2G, 3G, 4G
Portable Wireless
Repeaters and E911 systems
Digital PreꢁDistortion
Point to Point Infrastructure
Public Safety Infrastructure
WIMAX Receivers and Transmitters
Military Systems, JTRS radios
RFID handheld and portable readers
Cable Infrastructure
RF Product Line
Green
Wireless LAN
Test / ATE Equipment
F2923, Rev O 11/9/2015
1
ABSOLUTE MAXIMUM RATINGS
Parameter / Condition
Vcc to GND
CTL1, CTL2
ModeCTL to GND
RF1, RF2, RF_COM
Symbol
Vcc
VCNTL
VMODE
VRF
Min
ꢁ0.3
ꢁ0.3
ꢁ0.3
ꢁ0.3
Max
+3.9
Vcc + 0.3
Vcc + 0.3
+0.3
Unit
V
V
V
V
Maximum Junction Temperature
Storage Temperature Range
Lead Temperature (soldering, 10s)
ESD Voltage– HBM (Per JESD22ꢁA114)
ESD Voltage – CDM (Per JESD22ꢁC101)
TJmax
TST
TLEAD
VESDHBM
VESDCDM
+140
+150
+260
Class 2
Class III
°C
°C
°C
ꢁ65
ABS MAX RF POWER AT 2 GHZ WITH TC = +85 °C *
RF1, RF2, RF_COM (RF1 or RF2 is connected to RF_COM, IL States)
RF1, RF2, RF_COM (When port is internally terminated)
+33dBm
+24dBm
ABS MAX RF POWER AT 2 GHZ WITH TC = +105 °C *
RF1, RF2, RF_COM (RF1 or RF2 is connected to RF_COM, IL States)
RF1, RF2, RF_COM (When port is internally terminated)
+33dBm
+21dBm
* Temperature of exposed paddle
Stresses above those listed above may cause permanent damage to the device. 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.
PACKAGE THERMAL AND MOISTURE CHARACTERISTICS
θJA (Junction – Ambient)
θJC (Junction – Case) The Case is defined as the exposed paddle
Moisture Sensitivity Rating (Per JꢁSTDꢁ020)
60 °C/W
3.9 °C/W
MSL1
Constant Impedance Absorptive SP2T RF Switch
2
Rev O 11/9/2015
F2923 RECOMMENDED OPERATING CONDITIONS
Parameter
Supply Voltage
Symbol
Conditions
Min
3.1
Typ
Max
3.5
Units
VCC
V
Operating Temperature
Range
RF Frequency Range
TCASE
FRF
Case Temperature
ꢁ55
0.3
+105
OC
8000
27
MHz
Selected Port (I.L. State)
Unselected Port2 (Term State)
RF Continuous
PRF
dBm
Input Power (CW) 1
18
50
50
50
RF1 Port Impedance
RF2 Port Impedance
RF_COM Port Impedance
ZRF1
ZRF2
ꢀ
ZRF_COM
Note 1– See Figure 1 below for RF power handling levels for various conditions.
Note 2– States 1, 2, or 3.
FIGURE 1: MAXIMUM OPERATING RF INPUT POWER VS. RF FREQUENCY
Rev O 11/9/2015
3
Constant Impedance Absorptive SP2T RF Switch
F2923 SPECIFICATION
Typical Application Circuit, VCC = +3.3 V, TC = +25 °C, FRF = 2 GHz, input power = 0 dBm unless otherwise stated.
PCB board trace and connector losses are deꢁembedded unless otherwise noted.
Parameter
Logic Input High
Threshold
Symbol
Conditions
Min
Typ
Max
Units
VIH
CTL1 and CTL2 pins
1.1
3.6
V
Logic Input Low
Threshold
VIL
CTL1 and CTL2 pins
0.6
V
ModeCTL Input High
ModeCTL Input Low
Logic Current
DC Current (Vcc)
VSWR during transition
Vcc
GND
V
V
nA
µA
ꢁ
IIH, IIL
ICC
VSWRT
CTL1, CTL2, ModeCTL pins
State 2 or State 3
RF1/RF2 to RF_COM
RF = 1 GHz
RF = 2 GHz
RF = 4 GHz
RF = 6 GHz
RF = 8 GHz
RF = 1 GHz
RF = 2 GHz
RF = 4 GHz
RF = 6 GHz
RF = 8 GHz
RF = 1 GHz
RF = 2 GHz
RF = 4 GHz
RF = 6 GHz
RF = 8 GHz
RF = 1 GHz
RF = 2 GHz
RF = 4 GHz
RF = 6 GHz
RF = 8 GHz
RF = 1 GHz
RF = 2 GHz
RF = 4 GHz
RF = 6 GHz
RF = 8 GHz
1000
150
127
1.4:1
0.43
0.48
0.63
0.89
1.12
77
74
51
40
37
0.8 1
Insertion Loss
RF1/RF2 to RF_COM
(State 2 or 3)
IL
dB
dB
dB
dB
dB
712
61
Isolation
RF1 / RF2 to RF_COM
(State 2 or 3)
ISO1
ISO2
RL1
73
63
51
35
Isolation
RF1 to RF2
(State 2 or 3)
29
23.8
25.2
26.7
18.4
16.6
29.6
25.4
26.1
17.6
14.1
Return Loss RF_COM
(State 1)
Return Loss RF_COM
(State 2 or 3)
RL2
Note 1– Items in min/max columns in bold italics are Guaranteed by Test.
Note 2– Items in min/max columns NOT in bold italics are Guaranteed by Design Characterization.
Constant Impedance Absorptive SP2T RF Switch
4
Rev O 11/9/2015
F2923 SPECIFICATION (CONT.)
Typical Application Circuit, VCC = +3.3 V, TC = +25 °C, FRF = 2 GHz, input power = 0 dBm unless otherwise stated.
PCB board trace and connector losses are deꢁembedded unless otherwise noted.
Parameter
Symbol
Conditions
RF = 1 GHz
Min
Typ
22.6
23.4
25.2
19.9
11.2
33.7
28.4
28.0
17.7
15.0
116
106
105
66
Max
Units
RF = 2 GHz
RF = 4 GHz
RF = 6 GHz
RF = 8 GHz
RF = 1 GHz
RF = 2 GHz
RF = 4 GHz
RF = 6 GHz
RF = 8 GHz
Return Loss
RF1, RF2
(State 1)
RL3
dB
Return Loss
RF1, RF2 when selected
(State 2 or 3)
RL4
dB
RF = 1 GHz
RF = 2 GHz
RF = 3 GHz
RF = 1 GHz
RF = 2 GHz
RF = 3 GHz
RF = 4 GHz
RF = 6 GHz
Input IP2
RF1 / RF2
(State 2 or 3)
PIN= +13 dBm
per tone
IIP2
dBm
66
65
65
52
Input IP3
RF1 / RF2
(State 2 or 3)
PIN =+13 dBm
per tone
IIP3
IP1dB
TSW
dBm
dBm
µs
Input 1dB compression
RF = 2 GHz
32
RF1 / RF2 (State 2 or 3)3
50% control to 90% RF
50% control to 10% RF
50% control to RF settled to
within +/ꢁ 0.1 dB of I.L.
value.
0.6
0.5
Switching Time4
0.675
Maximum Switching Rate
Maximum spurious level
on any RF port5
SWRATE
SpurMAX
25
kHz
RF ports terminated into 50Ω
ꢁ137
dBm
Note 1– Items in min/max columns in bold italics are Guaranteed by Test.
Note 2– Items in min/max columns NOT in bold italics are Guaranteed by Design Characterization.
Note 3– The input 1dB compression point is a linearity figure of merit. Refer to Figure 1 above and
Recommended Operating Conditions sections for the maximum RF input powers.
Note 4– FRF = 2 GHz.
Note 5– Spurious due to onꢁchip negative voltage generator. Typical generator fundamental frequency is 2.2 MHz.
Rev O 11/9/2015
5
Constant Impedance Absorptive SP2T RF Switch
Table 1 includes 3 states and provides the truth table for 2-pin control input.
Table 1 - Switch Control Truth Table for 3 states using 2 control pins; pin 16 and pin 17
Control pin input
RF1, RF2 input / output
RF1 to RF Com RF2 to RF Com
OFF OFF
State
CTL1
CTL2
(Pin 17)
(Pin 16)
1
2
3
4
Low
Low
High
High
Low
High
Low
High
OFF
ON
ON
OFF
N/A
N/A
Table 2 includes 2 states and provides the truth table for 1-pin control input.
Table 2 - Switch Control Truth Table for 2 states using a single control pin 16
Control pin input
RF1, RF2 input / output
RF1 to RF Com RF2 to RF Com
State
CTL1
CTL2
(Pin 17)
(Pin 16)
2
3
don't care
don't care
High
Low
OFF
ON
ON
OFF
Table 3 provides the truth table for selecting the use of either 1 or 2 control pins.
Table 3 - Mode Control (pin 19) Truth table to use either 1 or 2 control pins
Pin Control Mode
2-pin control: CTL1 and CTL2
1-pin control: CTL2
ModeCTL (Pin 19)
GND
VCC
Notes:
1. When RF1 and RF2 ports are both open (State 1), all 3 RF ports are terminated to an internal 50 Ω termination
resistor.
2. When RF1 or RF2 port is open (State 2 or State 3 OFF condition), the open port is connected to an internal
50Ω termination resistor.
3. When RF1 or RF2 port is closed (State 2 or State 3 ON condition), the closed port is connected to the
RF_COM port.
TYPICAL OPERATING CURVE CONDITIONS
Unless otherwise noted, the following conditions apply:
•
•
•
•
•
•
EVKit loss deꢁembedded for only insertion loss plots.
Vcc = 3.3 V
FRF = 2 GHz
O
TAMB = 25 C
Small signal parameters measured with PIN = 0dBm.
Two tone tests PIN =+13 dBm/tone with 50 MHz tone spacing.
Constant Impedance Absorptive SP2T RF Switch
6
Rev O 11/9/2015
TYPICAL OPERATING CONDITIONS (- 1 -)
Insertion Loss vs. Temperature
Insertion Loss vs. Voltage
0
0
-0.4
-0.8
-1.2
-0.4
-0.8
-1.2
RF1 Sel, -55C
RF1 Sel, 25C
RF1 Sel, 105C
RF2 Sel, -55C
RF2 Sel, 25C
RF2 Sel, 105C
RF1 Sel, 3.1V
-1.6
RF1 Sel, 3.3V
RF2 Sel, 3.1V
RF2 Sel, 3.3V
RF2 Sel, 3.5V
-1.6
-2
RF1 Sel, 3.5V
-2
0
1
2
3
4
5
6
7
8
8
8
0
1
2
3
4
5
6
7
8
Frequency (GHz)
Frequency (GHz)
Isolation vs. Temp [RF_COM ꢁ RF1 / RF2]
Isolation vs. Voltage [RF_COM ꢁ RF1 / RF2]
0
0
RF1 Sel, -55C
RF1 Sel, 25C
RF1 Sel, 105C
RF2 Sel, -55C
RF2 Sel, 25C
RF2 Sel, 105C
RF1 Sel, 3.1V
RF1 Sel, 3.3V
RF1 Sel, 3.5V
RF2 Sel, 3.1V
RF2 Sel, 3.3V
RF2 Sel, 3.5V
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
8
Frequency (GHz)
Frequency (GHz)
Isolation vs. Temp [RF1 ꢁ RF2, RF2 ꢁ RF1]
Isolation vs. Voltage [RF1 ꢁ RF2, RF2 ꢁ RF1]
0
0
RF1 Sel, -55C
RF1 Sel, 25C
RF1 Sel, 105C
RF2 Sel, -55C
RF2 Sel, 25C
RF2 Sel, 105C
RF1 Sel, 3.1V
RF1 Sel, 3.3V
RF1 Sel, 3.5V
RF2 Sel, 3.1V
RF2 Sel, 3.3V
RF2 Sel, 3.5V
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
8
Frequency (GHz)
Frequency (GHz)
Rev O 11/9/2015
7
Constant Impedance Absorptive SP2T RF Switch
TYPICAL OPERATING CONDITIONS (- 2 -)
RF1 Return Loss vs. Temperature
RF1 Return Loss vs. Voltage
0
0
RF1 Sel, -55C
RF1 Sel, 25C
RF1 Sel, 105C
RF2 Sel, -55C
RF2 Sel, 25C
RF2 Sel, 105C
RF1 Sel, 3.1V
RF2 Sel, 3.1V
RF2 Sel, 3.3V
RF2 Sel, 3.5V
-5
-10
-15
-20
-25
-30
-35
-40
-5
-10
-15
-20
-25
-30
-35
-40
RF1 Sel, 3.3V
RF1 Sel, 3.5V
0
1
2
3
4
5
6
7
7
7
8
8
8
0
1
2
3
4
5
6
7
7
7
8
8
8
Frequency (GHz)
Frequency (GHz)
RF2 Return Loss vs. Temperature
RF2 Return Loss vs. Voltage
0
0
RF1 Sel, -55C
RF1 Sel, 25C
RF1 Sel, 105C
RF2 Sel, -55C
RF2 Sel, 25C
RF2 Sel, 105C
RF1 Sel, 3.1V
RF2 Sel, 3.1V
RF2 Sel, 3.3V
RF2 Sel, 3.5V
-5
-10
-15
-20
-25
-30
-35
-40
-5
-10
-15
-20
-25
-30
-35
-40
RF1 Sel, 3.3V
RF1 Sel, 3.5V
0
1
2
3
4
5
6
0
1
2
3
4
5
6
Frequency (GHz)
Frequency (GHz)
RF_COM Return Loss vs. Temperature
RF_COM Return Loss vs. Voltage
0
0
RF1 Sel, -55C
RF1 Sel, 25C
RF1 Sel, 105C
RF2 Sel, -55C
RF1 Sel, 3.1V
RF2 Sel, 3.1V
RF2 Sel, 3.3V
RF2 Sel, 3.5V
-5
-10
-15
-20
-25
-30
-35
-40
RF2 Sel, 25C
RF2 Sel, 105C
-5
-10
-15
-20
-25
-30
-35
-40
RF1 Sel, 3.3V
RF1 Sel, 3.5V
0
1
2
3
4
5
6
0
1
2
3
4
5
6
Frequency (GHz)
Frequency (GHz)
Constant Impedance Absorptive SP2T RF Switch
8
Rev O 11/9/2015
TYPICAL OPERATING CONDITIONS (- 3 -)
Isolation vs. Temp [All Off State, RF_COM Driven]
Isolation vs. Voltage [All Off State, RF_COM Driven]
0
0
RF1 Out, -55C
RF1 Out, 25C
RF1 Out, 105C
RF2 Out, -55C
RF2 Out, 25C
RF2 Out, 105C
RF1 Out, 3.1V
RF1 Out, 3.3V
RF1 Out, 3.5V
RF2 Out, 3.1V
RF2 Out, 3.3V
RF2 Out, 3.5V
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
0
1
2
3
4
5
6
7
8
0
1
2
3
4
5
6
7
8
Frequency (GHz)
Frequency (GHz)
RF_COM Return Loss [All Off State] vs. Temp
RF_COM Return Loss [All Off State] vs. Voltage
0
0
-55C
3.1V
-5
-10
-15
-20
-25
-30
-35
-40
25C
-5
-10
-15
-20
-25
-30
-35
-40
3.3V
3.5V
105C
0
1
2
3
4
5
6
7
8
0
1
2
3
4
5
6
7
8
Frequency (GHz)
Frequency (GHz)
Return Loss (During Switching) vs. Time
VSWR (During Switching) vs. Time
0
2
RF1 ( RF1 Term to RFCOM ) or RF2 ( RF2 Term to RFCOM )
RF1 ( RFCOM to RF1 Term ) or RF2 ( RFCOM to RF2 Term )
RFCOM ( RF1 to RF2 ) or RFCOM ( RF2 to RF1 )
RF1 ( RF1 Term to RFCOM ) or RF2 ( RF2 Term to RFCOM )
RF1 ( RFCOM to RF1 Term ) or RF2 ( RFCOM to RF2 Term )
RFCOM ( RF1 to RF2 ) or RFCOM ( RF2 to RF1 )
-5
-10
-15
-20
-25
-30
-35
1.8
1.6
1.4
1.2
1
50% CTRL at t= t0
50% CTRL at t= t0
0
0.1 0.2
0.3 0.4
0.5 0.6
0.7 0.8
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
Time (µsec)
Time (µsec)
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9
Constant Impedance Absorptive SP2T RF Switch
TYPICAL OPERATING CONDITIONS (- 4 -)
Switching Time Tc=25C [RF_COM Driven, RF1 to RF2]
0.6
Switching Time Tc=25C [RF_COM Driven, RF2 to RF1]
0.6
RF2 On to Off
RF1 Off to On
RF1 On to Off
RF2 Off to On
0.4
0.2
0.4
0.2
0.0
0.0
-0.2
-0.4
-0.6
-0.2
-0.4
-0.6
CTL2 switched high to low at t = t0
CTL2 switched low to high at t = t0
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
Time (µsec)
Time (µsec)
Switching Time Tc=-40C [RF_COM Driven, RF2 to RF1]
0.6
Switching Time Tc=-40C [RF_COM Driven, RF1 to RF2]
0.6
RF2 On to Off
RF1 Off to On
RF1 On to Off
RF2 On to Off
0.4
0.2
0.4
0.2
0.0
0.0
-0.2
-0.4
-0.6
-0.2
-0.4
-0.6
CTL2 switched high to low at t = t0
CTL2 switched low to high at t = t0
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
Time (µsec)
Time (µsec)
Input IP3 [1 GHz]
80
Compression [1 GHz, 2 GHz, RF1, RF2]
0.5
RF1, 1GHz
RF1, 2GHz
RF2, 1GHz
RF2, 2GHz
-55C / RF1
-55C / RF2
25C / RF1
25C / RF2
105C / RF1
105C / RF2
75
70
65
60
55
50
45
40
0
-0.5
-1
-1.5
-2
3.1
3.2
3.3
3.4
3.5
22
24
26
28
30
32
34
36
VCC (V)
Input Power (dBm)
Constant Impedance Absorptive SP2T RF Switch
10
Rev O 11/9/2015
TYPICAL OPERATING CONDITIONS (- 5 -)
Input IP3 [2 GHz]
80
Input IP3 [3 GHz]
80
-55C / RF1
-55C / RF2
25C / RF1
25C / RF2
105C / RF1
105C / RF2
-55C / RF1
-55C / RF2
25C / RF1
25C / RF2
105C / RF1
105C / RF2
75
70
65
60
55
50
45
40
75
70
65
60
55
50
45
40
3.1
3.2
3.3
3.4
3.5
3.1
3.2
3.3
3.4
3.5
VCC (V)
VCC (V)
Rev O 11/9/2015
11
Constant Impedance Absorptive SP2T RF Switch
PACKAGE DRAWING
(4 mm x 4 mm 20ꢁpin TQFN), NCG20
Constant Impedance Absorptive SP2T RF Switch
12
Rev O 11/9/2015
LAND PATTERN DIMENSION
Rev O 11/9/2015
13
Constant Impedance Absorptive SP2T RF Switch
PIN DIAGRAM
20
19
18
17
16
1
2
3
15
14
13
GND
N.C.
GND
RF2
Control
Circuit
GND
RF1
50Ω
50Ω
50Ω
4
5
12
11
GND
GND
GND
GND
E.P.
6
7
8
9
10
PIN DESCRIPTION
Pin
Name
Function
1, 2, 4, 5, 6, 7, 9, 10,
11, 12, 14
GND
Ground these pins.
RF1 Port. Matched to 50Ω. If this pin is not 0V DC, then an external
coupling capacitor must be used.
3
8
RF1
RF Common Port. Matched to 50Ω. If this pin is not 0V DC, then an
external coupling capacitor must be used.
RF_COM
RF2 Port. Matched to 50Ω. If this pin is not 0V DC, then an external
coupling capacitor must be used.
13
15
16
RF2
N.C.
CTL2
No internal connection. This pin can be left open or connected to ground.
Control 2 – See Table 1 and Table 2 Switch Control Truth Tables for proper
logic setting.
Control 1 – See Table 1 and Table 2 Switch Control Truth Tables for proper
logic setting.
17
18
19
CTL1
N.C.
No internal connection.
Mode Control – See Table 3 Mode Control Truth Table. Apply VCC to select
1ꢁpin control or GND for 2ꢁpin control.
ModeCTL
Power Supply. Bypass to GND with capacitors shown in the Typical
Application Circuit as close as possible to pin.
20
21
Vcc
Exposed Pad. Internally connected to GND. Solder this exposed pad to a
PCB pad that uses multiple ground vias to provide heat transfer out of the
device into the PCB ground planes. These multiple ground vias are also
required to achieve the specified RF performance.
— EP
Constant Impedance Absorptive SP2T RF Switch
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APPLICATIONS INFORMATION
Default Start-up
Control pins include no internal pullꢁdown resistors to logic LOW or pullꢁup resistors to logic HIGH. Upon startꢁ
up, all control pins should be set to logic LOW (0) thereby enabling 2ꢁpin switch control, opening both RF1 and
RF2 paths, and setting logic control voltage to 3.3 V (see above tables for LOW logic states).
Power Supplies
A common VCC power supply should be used for all pins requiring DC power. All supply pins should be
bypassed with external capacitors to minimize noise and fast transients. Supply noise can degrade noise figure
and fast transients can trigger ESD clamps and cause them to fail. Supply voltage change or transients should
have a slew rate smaller than 1 V / 20 µS. In addition, all control pins should remain at 0 V (+/ꢁ0.3 V) while
the supply voltage ramps or while it returns to zero.
Control Pin Interface
If control signal integrity is a concern and clean signals cannot be guaranteed due to overshoot, undershoot,
ringing, etc., the following circuit at the input of each control pin is recommended. This applies to control pins
16, 17, and 19 as shown below.
5k ohm
5k ohm
5k ohm
ModeCTL
CTL1
CTL2
2pF
2pF
2pF
20
19
18
17
16
1
2
3
15
14
13
Control
Circuit
50Ω
50Ω
4
5
50Ω
12
11
6
7
8
9
10
Rev O 11/9/2015
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Constant Impedance Absorptive SP2T RF Switch
EVKIT PICTURE
Top View
Bottom View
Constant Impedance Absorptive SP2T RF Switch
16
Rev O 11/9/2015
EVKIT / APPLICATIONS CIRCUIT
Rev O 11/9/2015
17
Constant Impedance Absorptive SP2T RF Switch
EVKIT BOM
Part Reference
QTY
1
DESCRIPTION
100 nF ±10%, 50V, X7R Ceramic Capacitor (0603)
1000 pF ±5%, 50V, C0G, Ceramic Capacitor (0402)
100 pF ±5%, 50V, C0G, Ceramic Capacitor (0402)
0 Ω, 1/10W, Resistor (0402)
Mfr. Part #
GRM188R71H104K
GRM1555C1H102J
GRM1555C1H101J
ERJꢁ2GE0R00X
Mfr.
Murata
Murata
Murata
Panasonic
C1
C2
C3, C4, C6
R2, R3, R4, R5
R6
1
3
4
0
Not Installed (0402)
R7, R8, R10
J1ꢁJ5
3
100k Ω ±1%, 1/10W, Resistor (0402)
Edge Launch SMA (0.375 inch pitch ground tabs)
CONN HEADER VERT DBL 8 X 2 POS GOLD
Test Point
ERJꢁ2RKF1003X
142ꢁ0701ꢁ851
67997ꢁ116HLF
5021
Panasonic
5
Emerson Johnson
J8
1
FCI
VCC, GND, GND1
U1
3
Keystone Electronics
1
SP2T Switch 4 mm x 4 mm QFN20ꢁEP
Printed Circuit Board
F2923NCGI
IDT
IDT
1
F2923 EVKIT Rev 01
TOP MARKINGS
Part Number
IDTF29
23NCGI
Z518BJG
Assembler
Code
Lot Code
Date Code [YWW]
(Week 18 of 2015)
ASM Test
Step
Constant Impedance Absorptive SP2T RF Switch
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Rev O 11/9/2015
EVKIT OPERATION
PCB RF Connectors
The F2923 EVkit is a thin multilayer board (0.032” total thickness) designed using Rogers’ 4350 high RF
performance material. Since this substrate is not as rigid as standard FR4, one must take care when making
connections to the board to avoid physically damaging the board. It is suggested that the body of the connector
be restrained while tightening the RF connectors so to not put stress on the PCB material.
External Supply Setup
Set up a VCC power supply in the voltage range of 3.1 V to 3.5 V and disable the power supply output.
Logic Control Setup
Using the EVKIT to manually set the Control Logic:
To setup the part for two pin logic control connect a 2ꢁpin shunt from pin 3 (ModeCTL) to pin 4 (GND) on
connector J8.
For one pin logic control leave J8 pin 3 open. An onꢁboard pullꢁup resistor R10 will connect the ModeCTL
pin to Vcc to provide the logic high for one pin control.
The PCB includes 2 pullꢁup resistors (R7, R8) to Vcc to provide a logic high for CTL1 and CTL2
respectively. Installing a 2ꢁpin shunt from pin 7 (CTL1) to pin 8 (GND) of J8 will provide a logic low for
manual control of the CTL1 pin. Placing a 2ꢁpin shunt from pin 9 (CTL2) to pin 10 (GND) of J8 will result in
a logic low for the CTL2 pin. See Tables 1, 2 and 3 for control details.
Resistor R6 along with the 1.8VSEL, 1.8VSEL2, and LogicCTL pins are not used on the F2923 EVKIT.
Using External Control Logic:
To setup the part for two pin logic control connect a 2ꢁpin shunt from pin 3 (ModeCTL) to pin 4 (GND) on
connector J8.
For one pin control leave pin 3 (ModeCTL) of J8 open. In this configuration the ModeCTL pin will be
pulled up to Vcc on the PCB through resistor R10.
Turn on Procedure
Setup the supplies and Eval Board as noted in the External Supply Setup and Logic Control Setup
sections above.
Connect the preset/ disabled VCC power supply to the VCC and GND loops on the PCB.
If controlling CTL1 and CTL2 with external logic then set these to logic low.
Enable the VCC supply.
Set the desired logic setting using CTL1, and CTL2 Table 1 or Table 2 setting. Note that external control
logic should not be applied without VCC being applied first.
For manual logic control the J8 connector CTL1 and CTL2 pins can be grounded to a neighboring ground
for a logic low or left open for a logic high.
Turn off Procedure
If using external control logic for CTL1, CTL2 then set them to a logic low. Disable the VCC supply.
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Constant Impedance Absorptive SP2T RF Switch
REVISION HISTORY SHEET
Rev
O
Date
2015ꢁNovꢁ9
Page
Description of Change
Initial Release
Constant Impedance Absorptive SP2T RF Switch
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Rev O 11/9/2015
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