ADG918BRM [ROCHESTER]

0 MHz - 4000 MHz RF/MICROWAVE DIVERSITY SWITCH, 1.25 dB INSERTION LOSS, RM-8, MO-187AA, MSOP-8;
ADG918BRM
型号: ADG918BRM
厂家: Rochester Electronics    Rochester Electronics
描述:

0 MHz - 4000 MHz RF/MICROWAVE DIVERSITY SWITCH, 1.25 dB INSERTION LOSS, RM-8, MO-187AA, MSOP-8

瞄准线 射频 微波
文件: 总17页 (文件大小:1324K)
中文:  中文翻译
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Wideband 4 GHz, 43 dB Isolation at 1 GHz,  
CMOS 1.65 V to 2.75 V, 2:1 Mux/SPDT  
ADG918/ADG919  
FUNCTIONAL BLOCK DIAGRAMS  
FEATURES  
Wideband switch: −3 dB @ 4 GHz  
Absorptive/reflective switches  
ADG918  
RF1  
High off isolation (43 dB @ 1 GHz)  
Low insertion loss (0.8 dB @1 GHz)  
Single 1.65 V to 2.75 V power supply  
CMOS/LVTTL control logic  
RFC  
50  
RF2  
CTRL  
8-lead MSOP and tiny 3 mm × 3 mm LFCSP packages  
Low power consumption (<1 μA)  
50Ω  
APPLICATIONS  
ADG919  
Wireless communications  
General-purpose RF switching  
Dual-band applications  
High speed filter selection  
Digital transceiver front end switch  
IF switching  
RF1  
RF2  
RFC  
CTRL  
Tuner modules  
Figure 1.  
Antenna diversity switching  
LVTTL compatible. The low power consumption of these  
CMOS devices makes them ideally suited to wireless and  
general-purpose high frequency switching applications.  
GENERAL DESCRIPTION  
The ADG918/ADG919 are wideband switches using a CMOS  
process to provide high isolation and low insertion loss to  
1 GHz. The ADG918 is an absorptive (matched) switch having  
50 Ω terminated shunt legs, whereas the ADG919 is a reflective  
switch. These devices are designed such that the isolation is  
high over the dc to 1 GHz frequency range. They have on-board  
CMOS control logic, thus eliminating the need for external  
controlling circuitry. The control inputs are both CMOS and  
PRODUCT HIGHLIGHTS  
1. –43 dB off isolation @ 1 GHz.  
2. 0.8 dB insertion loss @ 1 GHz.  
3. Tiny 8-lead MSOP/LFCSP packages.  
–0.4  
–0.6  
–0.8  
–1.0  
–1.2  
–1.4  
–1.6  
–1.8  
–2.0  
–2.2  
–2.4  
–2.6  
0
V
= 2.5V  
DD  
= 25°C  
–10  
–20  
–30  
–40  
–50  
–60  
–70  
–80  
T
A
S12  
–2.8  
–3.0  
–3.2  
V
T
= 2.5V  
= 25°C  
DD  
S21  
–90  
A
–100  
10k  
100k  
1M  
10M  
100M  
1G  
10G  
10k  
100k  
1M  
10M  
100M  
1G  
10G  
FREQUENCY (Hz)  
FREQUENCY (Hz)  
Figure 3. Insertion Loss vs. Frequency  
Figure 2. Off Isolation vs. Frequency  
Rev. C  
Information furnished by Analog Devices is believed to be accurate and reliable. However, no  
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other  
rights of third parties that may result from its use. Specifications subject to change without notice. No  
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.  
Trademarks and registeredtrademarks arethe property of their respective owners.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781.329.4700 www.analog.com  
Fax: 781.461.3113 ©2003–2008 Analog Devices, Inc. All rights reserved.  
 
ADG918/ADG919  
TABLE OF CONTENTS  
Features .............................................................................................. 1  
Terminology.................................................................................... 10  
Test Circuits..................................................................................... 11  
Applications Information.............................................................. 13  
Absorptive vs. Reflective Switch............................................... 13  
Wireless Metering....................................................................... 13  
Tuner Modules............................................................................ 13  
Filter Selection ............................................................................ 13  
ADG9xx Evaluation Board ........................................................... 14  
Outline Dimensions....................................................................... 15  
Ordering Guide .......................................................................... 16  
Applications....................................................................................... 1  
Functional Block Diagrams............................................................. 1  
General Description......................................................................... 1  
Product Highlights ........................................................................... 1  
Revision History ............................................................................... 2  
Specifications..................................................................................... 3  
Absolute Maximum Ratings............................................................ 5  
ESD Caution.................................................................................. 5  
Pin Configuration and Function Descriptions............................. 6  
Typical Performance Characteristics ............................................. 7  
REVISION HISTORY  
9/08—Rev. B to Rev. C  
9/04—Changed from Rev. 0 to Rev. A  
Changes to Ordering Guide .......................................................... 16  
Updated Format..................................................................Universal  
Change to Data Sheet Title...............................................................1  
Change to Features............................................................................1  
Change to Product Highlights.........................................................1  
Changes to Specifications.................................................................3  
Change to ADG9xx Evaluation Board section........................... 13  
Changes to Ordering Guide.......................................................... 14  
8/08—Rev. A to Rev. B  
Changes to Table 1, AC Electrical Characteristics, Third Order  
Intermodulation Intercept............................................................... 3  
Updated Outline Dimensions....................................................... 15  
Changes to Ordering Guide .......................................................... 16  
8/03 Revision 0: Initial Version  
Rev. C | Page 2 of 16  
 
ADG918/ADG919  
SPECIFICATIONS  
VDD = 1.65 V to 2.75 V, GND = 0 V, input power = 0 dBm, all specifications TMIN to TMAX, unless otherwise noted. Temperature range for  
B Version: −40°C to +85°C.  
Table 1.  
B Version  
Parameter  
Symbol Conditions  
Min  
Typ1  
Max  
Unit  
AC ELECTRICAL CHARACTERISTICS  
Operating Frequency2  
3 dB Frequency3  
dc  
2
4
7
16  
0.7  
0.8  
1.25  
GHz  
GHz  
dBm  
dBm  
dB  
dB  
dB  
dB  
dB  
dB  
dB  
dB  
dB  
Input Power3  
0 V dc bias  
0.5 V dc bias  
DC to 100 MHz; VDD = 2.5 V 10%  
500 MHz; VDD = 2.5 V 10%  
1000 MHz; VDD = 2.5 V 10%  
100 MHz  
500 MHz  
1000 MHz  
100 MHz  
500 MHz  
1000 MHz  
100 MHz  
500 MHz  
1000 MHz  
100 MHz  
500 MHz  
Insertion Loss  
S21, S12  
S21, S12  
S21, S12  
S21, S12  
S21, S12  
S11, S22  
S11, S22  
0.4  
0.5  
0.8  
60  
49  
43  
60  
47  
37  
58  
44  
37  
57  
42  
33  
27  
27  
26  
23  
21  
20  
6.6  
6.5  
6.1  
6.1  
17  
36  
2.5  
Isolation—RFC to RF1/RF2  
(CP Package)  
57  
46  
36  
55  
43  
34  
55  
41  
31  
54  
39  
31  
21  
22  
22  
18  
17  
16  
Isolation—RFC to RF1/RF2  
(RM Package)  
Isolation—RF1 to RF2 (Crosstalk)  
(CP Package)  
Isolation—RF1 to RF2 (Crosstalk)  
(RM Package)  
1000 MHz  
DC to 100 MHz  
500 MHz  
1000 MHz  
DC to 100 MHz  
500 MHz  
Return Loss (On Channel)3  
dB  
dB  
dB  
dB  
dB  
dB  
ns  
ns  
ns  
ns  
dBm  
dBm  
mV p-p  
Return Loss (Off Channel)3  
ADG918  
1000 MHz  
On Switching Time3  
Off Switching Time3  
Rise Time3  
Fall Time3  
1 dB Compression3  
Third Order Intermodulation Intercept  
Video Feedthrough4  
DC ELECTRICAL CHARACTERISTICS  
Input High Voltage  
tON  
50% CTRL to 90% RF  
50% CTRL to 10% RF  
10% to 90% RF  
90% to 10% RF  
1000 MHz  
10  
9.5  
9
tOFF  
tRISE  
tFALL  
P–1 dB  
IP3  
9
900 MHz/901 MHz, 4 dBm  
28.5  
VINH  
VINH  
VINL  
VINL  
II  
VDD = 2.25 V to 2.75 V  
VDD = 1.65 V to 1.95 V  
VDD = 2.25 V to 2.75 V  
VDD = 1.65 V to 1.95 V  
0 V ≤ VIN ≤ 2.75 V  
1.7  
0.65 VCC  
V
V
V
V
Input Low Voltage  
0.7  
0.35 VCC  
1
Input Leakage Current  
0.1  
μA  
Rev. C | Page 3 of 16  
 
ADG918/ADG919  
B Version  
Typ1  
Parameter  
CAPACITANCE3  
Symbol Conditions  
Min  
Max  
Unit  
RF On Capacitance  
CTRL Input Capacitance  
POWER REQUIREMENTS  
VDD  
CRF ON  
CCTRL  
f = 1 MHz  
f = 1 MHz  
1.6  
2
pF  
pF  
1.65  
2.75  
1
V
μA  
Quiescent Power Supply Current  
IDD  
Digital inputs = 0 V or VDD  
0.1  
1 Typical values are at VDD = 2.5 V and 25°C, unless otherwise stated.  
2 Point at which insertion loss degrades by 1 dB.  
3 Guaranteed by design, not subject to production test.  
4 The dc transience at the output of any port of the switch when the control voltage is switched from high to low or low to high in a 50 Ω test setup, measured with 1 ns  
rise time pulses and 500 MHz bandwidth.  
Rev. C | Page 4 of 16  
 
 
 
 
 
 
 
ADG918/ADG919  
ABSOLUTE MAXIMUM RATINGS  
TA = 25°C, unless otherwise noted.  
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.  
Table 2.  
Parameter  
Rating  
VDD to GND  
Inputs to GND  
Continuous Current  
Input Power  
–0.5 V to +4 V  
–0.5 V to VDD + 0.3 V1  
30 mA  
18 dBm  
Operating Temperature Range  
Industrial (B Version)  
Storage Temperature Range  
Junction Temperature  
MSOP Package  
ESD CAUTION  
–40°C to +85°C  
–65°C to +150°C  
150°C  
θJA Thermal Impedance  
LFCSP Package  
206°C/W  
θJA Thermal Impedance (2-layer board) 84°C/W  
θJA Thermal Impedance (4-layer board) 48°C/W  
Lead Temperature, Soldering (10 sec)  
IR Reflow, Peak Temperature (<20 sec)  
ESD  
300°C  
235°C  
1 kV  
1RF1 and RF2 off port inputs to ground: −0.5 V to VDD – 0.5 V.  
Rev. C | Page 5 of 16  
 
 
ADG918/ADG919  
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS  
1
2
3
4
8
7
6
5
V
RF1  
GND  
GND  
RF2  
DD  
ADG918/  
ADG919  
CTRL  
GND  
RFC  
TOP VIEW  
(Not to Scale)  
Figure 4. 8-Lead MSOP (RM-8) and  
8-Lead 3 mm x 3 mm LFCSP (CP-8);  
Exposed Pad Tied to Substrate, GND  
Table 3. Pin Function Descriptions  
Pin No.  
Mnemonic  
Function  
1
VDD  
Power Supply Input. These parts can be operated from 1.65 V to 2.75 V, and VDD should be decoupled to GND.  
2
CTRL  
GND  
RFC  
RF2  
RF1  
Logic Control Input. See Table 4.  
Ground Reference Point for All Circuitry on the Part.  
COMMON RF Port for Switch.  
RF2 Port.  
3, 6, 7  
4
5
8
RF1 Port.  
Table 4. Truth Table  
CTRL  
Signal Path  
RF2 to RFC  
RF1 to RFC  
0
1
Rev. C | Page 6 of 16  
 
 
ADG918/ADG919  
TYPICAL PERFORMANCE CHARACTERISTICS  
–0.2  
–0.4  
–0.6  
–0.2  
–0.4  
–0.6  
–0.8  
–1.0  
–1.2  
–1.4  
–1.6  
–1.8  
–2.0  
–2.2  
–2.4  
–2.6  
–2.8  
–3.0  
–3.2  
–40°C  
+25°C  
V
= 2.75V  
–0.8  
–1.0  
–1.2  
–1.4  
–1.6  
–1.8  
–2.0  
–2.2  
–2.4  
–2.6  
–2.8  
–3.0  
–3.2  
V = 2.5V  
DD  
DD  
+85°C  
V
= 2.25V  
DD  
V
= 2.5V  
100k  
DD  
T
= 25°C  
100k  
A
10k  
1M  
10M  
100M  
1G  
10G  
10k  
1M  
10M  
100M  
1G  
10G  
FREQUENCY (Hz)  
FREQUENCY (Hz)  
Figure 5. Insertion Loss vs. Frequency over Supplies  
(RF1/RF2, S12, and S21)  
Figure 8. Insertion Loss vs. Frequency over Temperature  
(RF1/RF2, S12, and S21)  
–0.30  
–0.35  
–0.40  
–0.45  
–0.50  
–0.55  
–0.60  
–0.65  
–0.70  
–0.75  
–0.80  
0
–10  
–20  
–30  
–40  
–50  
–60  
–70  
–80  
–90  
V
T
= 1.65V TO 2.75V  
DD  
= 25°C  
V
= 2.75V  
DD  
A
V
= 2.5V  
DD  
V
= 2.25V  
DD  
S12  
T
= 25°C  
S21  
10M  
A
10k  
100k  
1M  
10M  
100M  
1G  
10G  
10k  
100k  
1M  
100M  
1G  
10G  
FREQUENCY (Hz)  
FREQUENCY (Hz)  
Figure 6. Insertion Loss vs. Frequency over Supplies (RF1/RF2,  
S12, and S21) (Zoomed Figure 5 Plot)  
Figure 9. Isolation vs. Frequency over Supplies (RF1/RF2, ADG918)  
0
–0.2  
V
= 1.65V TO 2.75V  
DD  
= 25°C  
–0.4  
–0.6  
–0.8  
–1.0  
–1.2  
–1.4  
–1.6  
–1.8  
–2.0  
–2.2  
–2.4  
–2.6  
–2.8  
–10  
–20  
–30  
–40  
–50  
T
A
V
= 1.95V  
DD  
V
= 1.8V  
DD  
V
= 1.65V  
DD  
S12  
–60  
–70  
–80  
–90  
S21  
T
= 25°C  
100k  
A
–3.0  
–3.2  
10k  
–100  
10k  
100k  
1M  
10M  
100M  
1G  
10G  
1M  
10M  
100M  
1G  
10G  
FREQUENCY (Hz)  
FREQUENCY (Hz)  
Figure 10. Isolation vs. Frequency over Supplies (RF1/RF2, ADG919)  
Figure 7. Insertion Loss vs. Frequency over Supplies  
(RF1/RF2, S12, and S21)  
Rev. C | Page 7 of 16  
 
 
ADG918/ADG919  
–10  
V
= 2.5V  
DD  
–20  
–30  
–40  
–50  
–60  
–70  
–80  
–90  
–100  
CH1  
S12 (+85°C)  
S12 (+25°C)  
CH2/3  
S12 (–40°C)  
S21  
(–40°C, +25°C, +85°C)  
CH1 = CTRL = 1V/DIV  
CH2 = RF1 = 100mV/DIV  
CH3 = RF2 = 100mV/DIV  
T
T
= 6.1ns  
= 6.1ns  
RISE  
10k  
100k  
1M  
10M  
100M  
1G  
10G  
FREQUENCY (Hz)  
FALL  
Figure 11. Isolation vs. Frequency over Temperature (RF1/RF2, ADG919)  
Figure 14. Switch Timing  
0
T
V
= 25°C  
A
–5  
= 2.5V  
DD  
–10  
–15  
–20  
–25  
OFF SWITCH (ADG918)  
CTRL  
RFC  
–30  
ON SWITCH  
–35  
–40  
CH2 p-p  
2.002mV  
10k  
100k  
1M  
10M  
100M  
1G  
10G  
CH1 500mV CH2 1mV  
m 10.0ns  
FREQUENCY (Hz)  
Figure 15. Video Feedthrough  
Figure 12. Return Loss vs. Frequency (RF1/RF2, S11)  
40  
35  
–10  
–15  
–20  
–25  
–30  
–35  
–40  
–45  
–50  
–55  
–60  
–65  
–70  
–75  
–80  
T
V
= 25°C  
A
= 2.5V  
DD  
30  
25  
20  
15  
10  
5
0
V
= 2.5V  
DD  
= 25°C  
T
A
250  
350  
450  
550  
650  
750  
850  
10k  
100k  
1M  
10M  
100M  
1G  
10G  
FREQUENCY (Hz)  
FREQUENCY (MHz)  
Figure 13. Crosstalk vs. Frequency (RF1/RF2, S12, S21)  
Figure 16. IP3 vs. Frequency  
Rev. C | Page 8 of 16  
ADG918/ADG919  
20  
18  
16  
14  
12  
10  
8
6
4
V
= 2.5V  
= 25°C  
DD  
2
T
A
0
0
250  
500  
750  
1000  
1250  
1500  
FREQUENCY (MHz)  
Figure 17. P-1 dB vs. Frequency  
Rev. C | Page 9 of 16  
ADG918/ADG919  
TERMINOLOGY  
tFALL  
VDD  
Fall time; time for the RF signal to fall from 90% to 10% of the  
on level.  
Most positive power supply potential.  
IDD  
Off Isolation  
Positive supply current.  
The attenuation between the input and output ports of the  
switch when the switch control voltage is in the off condition.  
GND  
Ground (0 V) reference.  
Insertion Loss  
The attenuation between the input and output ports of the  
switch when the switch control voltage is in the on condition.  
CTRL  
Logic control input.  
VINL  
P–1 dB  
Maximum input voltage for Logic 0.  
1 dB compression point. The RF input power level at which the  
switch insertion loss increases by 1 dB over its low level value. It  
is a measure of how much power the on switch can handle  
before the insertion loss increases by 1 dB.  
VINH  
Minimum input voltage for Logic 1.  
I
INL (IINH)  
Input current of the digital input.  
IP3  
Third order intermodulation intercept. This is a measure of the  
power in false tones that occur when closely spaced tones are  
passed through a switch, whereby the nonlinearity of the switch  
causes these false tones to be generated.  
CIN  
Digital input capacitance.  
tON  
Delay between applying the digital control input and the output  
switching on.  
Return Loss  
The amount of reflected power relative to the incident power at  
a port. Large return loss indicates good matching. By measuring  
return loss, the VSWR (voltage standing wave ratio) can be  
calculated from conversion charts. VSWR indicates the degree  
of matching present at a switch RF port.  
tOFF  
Delay between applying the digital control input and the output  
switching off.  
tRISE  
Rise time; time for the RF signal to rise from 10% to 90% of the  
on level.  
Video Feedthrough  
Spurious signals present at the RF ports of the switch when the  
control voltage is switched from high to low or low to high  
without an RF signal present.  
Rev. C | Page 10 of 16  
 
ADG918/ADG919  
TEST CIRCUITS  
Setups for the ADG918 are similar.  
V
V
DD  
DD  
0.1µF  
V
OUT  
V
R
50  
DD  
L
0.1µF  
ADG919  
RF1  
RF2  
NETWORK  
ANALYZER  
V
50Ω  
DD  
RFC  
V
OUT  
V
RFx  
RFC  
50%  
50%  
R
50Ω  
CTRL  
L
CTRL  
V
V
S
S
50  
CTRL  
90%  
10%  
V
OUT  
V
CTRL  
GND  
GND  
V
OUT  
INSERTION LOSS = 20log  
tON  
V
S
tOFF  
Figure 21. Insertion Loss  
Figure 18. Switch Timing: tON, tOFF  
V
DD  
0.1µF  
V
V
DD  
NETWORK  
ANALYZER  
V
0.1µF  
RFC  
DD  
ADG919  
RF1  
RF2  
50  
V
S
DD  
RFC  
50Ω  
V
OUT  
RFx  
50%  
50%  
V
OUT  
V
CTRL  
R
L
CTRL  
R
L
50Ω  
V
S
90%  
90%  
50  
CTRL  
10%  
10%  
V
OUT  
V
CTRL  
GND  
GND  
V
OUT  
CROSSTALK = 20log  
tRISE  
tFALL  
V
S
Figure 19. Switch  
Figure 22. Crosstalk  
V
DD  
V
DD  
0.1µF  
0.1µF  
50  
V
V
S
DD  
ADG919  
V
DD  
ADG919  
V
OUT  
NC  
NC  
RF1  
RF2  
R
L
50Ω  
RF1  
RF2  
RFC  
RFC  
OSCILLOSCOPE  
NETWORK  
ANALYZER  
50Ω  
CTRL  
CTRL  
V
CTRL  
V
CTRL  
GND  
GND  
V
OUT  
OFF ISOLATION = 20log  
V
S
Figure 23. Video Feedthrough  
Figure 20. Off Isolation  
Rev. C | Page 11 of 16  
 
ADG918/ADG919  
V
DD  
V
DD  
DD  
0.1µF  
0.1µF  
V
DD  
ADG919  
V
ADG919  
RF1  
RF2  
50Ω  
RF1  
RF2  
50  
RF  
SOURCE  
RFC  
SPECTRUM  
ANALYZER  
RFC  
SPECTRUM  
ANALYZER  
RF  
COMBINER  
SOURCE  
CTRL  
CTRL  
V
S
RF  
SOURCE  
V
V
CTRL  
CTRL  
GND  
GND  
Figure 25. P-1 dB  
Figure 24. IP3  
Rev. C | Page 12 of 16  
ADG918/ADG919  
APPLICATIONS INFORMATION  
The ADG918/ADG919 are ideal solutions for low power, high  
frequency applications. The low insertion loss, high isolation  
between ports, low distortion, and low current consumption of  
these parts make them excellent solutions for many high  
frequency switching applications. The most obvious application  
is in a transmit/receive block, as shown in the wireless metering  
block diagram in Figure 26.  
a utility metering transceiver application, providing the  
required isolation between the transmit and receive signals.  
The SPDT configuration isolates the high frequency receive  
signal from the high frequency transmit.  
LNA  
ANTENNA  
ADG918  
Other applications include switching between high frequency  
filters, an ASK generator, an FSK generator, and an antenna  
diversity switch in many tuner modules.  
TX/RX SWITCH  
PA  
Figure 26. Wireless Metering  
ABSORPTIVE VS. REFLECTIVE SWITCH  
The ADG918 is an absorptive (matched) switch with 50 Ω  
terminated shunt legs, and the ADG919 is a reflective switch  
with 0 Ω terminated shunts to ground. The ADG918 absorptive  
switch has a good VSWR on each port, regardless of the switch  
mode. An absorptive switch should be used when there is a need  
for a good VSWR that is looking into the port but not passing  
the through signal to the common port. The ADG918 is there-  
fore ideal for applications that require minimum reflections  
back to the RF source. It also ensures that the maximum power  
is transferred to the load.  
TUNER MODULES  
The ADG918 can be used in a tuner module to switch between  
the cable TV input and the off-air antenna. This part is also  
ideal for use as an antenna diversity switch, switching different  
antenna to the tuner.  
VGA  
ANTENNA  
ADG918/  
TUNER  
ADG919  
CABLE  
Figure 27. Tuner Modules  
The ADG919 reflective switch is suitable for applications where  
high off port VSWR does not matter and the switch has some  
other desired performance feature. It can be used in many  
applications, including high speed filter selection. In most cases,  
an absorptive switch can be used instead of a reflective switch,  
but not vice versa.  
FILTER SELECTION  
The ADG919 can be used as a 2:1 demultiplex to switch high  
frequency signals between different filters and also to multiplex  
the signal to the output.  
RF  
RF  
IN  
OUT  
WIRELESS METERING  
RF1  
RF2  
RF1  
RF2  
RFC ADG919  
ADG919  
RFC  
The ADG918 can be used in wireless metering applications. It  
can be used in conjunction with the ADF7020 transceiver IC for  
Figure 28. Filter Selection  
Rev. C | Page 13 of 16  
 
ADG918/ADG919  
ADG9xx EVALUATION BOARD  
The ADG9xx evaluation board allows designers to evaluate the  
high performance wideband switches with a minimum of effort.  
In addition to the evaluation board, the user requires only a  
power supply and a network analyzer. An application note is  
available with the evaluation board and gives complete  
information about operating the evaluation board.  
The RFC port (see Figure 29) is connected through a 50 Ω  
transmission line to the top left SMA connector J1. RF1 and  
RF2 are connected through 50 Ω transmission lines to the top  
two SMA connectors, J2 and J3 respectively. A through trans-  
mission line connects J4 and J5 and is used to estimate the loss  
of the PCB over the environmental conditions being evaluated.  
The board is constructed of a 4-layer, FR4 material with a  
dielectric constant of 4.3 and an overall thickness of 0.062  
inches. Two ground layers with grounded planes provide  
ground for the RF transmission lines. The transmission lines  
were designed using a coplanar waveguide with ground plane  
model using a trace width of 0.052 inches, a clearance to ground  
plane of 0.030 inches, a dielectric thickness of 0.029 inches, and  
a metal thickness of 0.014 inches.  
Figure 29. ADG9xx Evaluation Board Top View  
Rev. C | Page 14 of 16  
 
 
ADG918/ADG919  
OUTLINE DIMENSIONS  
3.20  
3.00  
2.80  
8
1
5
4
5.15  
4.90  
4.65  
3.20  
3.00  
2.80  
PIN 1  
0.65 BSC  
0.95  
0.85  
0.75  
1.10 MAX  
0.80  
0.60  
0.40  
8°  
0°  
0.15  
0.00  
0.38  
0.22  
0.23  
0.08  
SEATING  
PLANE  
COPLANARITY  
0.10  
COMPLIANT TO JEDEC STANDARDS MO-187-AA  
Figure 30. 8-Lead Mini Small Outline Package [MSOP]  
(RM-8)  
Dimensions shown in millimeters  
3.25  
3.00 SQ  
2.75  
0.60 MAX  
0.50  
BSC  
0.60 MAX  
5
8
2.95  
2.75 SQ  
2.55  
1.60  
1.45  
1.30  
EXPOSED  
PAD  
TOP  
VIEW  
PIN 1  
INDICATOR  
(BOTTOM VIEW)  
4
1
PIN 1  
INDICATOR  
0.50  
0.40  
0.30  
1.89  
1.74  
1.59  
12° MAX  
0.70 MAX  
0.65TYP  
0.90 MAX  
0.85 NOM  
EXPOSED PAD IS CONNECTED INTERNAL LY.  
0.05 MAX  
0.01 NOM  
FOR INCREASED RELIABILIT Y OF THE SOLDER  
JOINTS AND MAXIMUM THERMAL CAPABILITY IT  
IS RECOMMENDED THAT THE PAD BE SOLDERED  
TO THE GROUND PLANE.  
0.30  
0.23  
0.18  
SEATING  
PLANE  
0.20 REF  
Figure 31. 8-Lead Lead Frame Chip Scale Package [LFCSP_VD]  
3 mm x 3 mm Body, Very Thin, Dual Lead  
(CP-8-2)  
Dimensions shown in millimeters  
Rev. C | Page 15 of 16  
 
ADG918/ADG919  
ORDERING GUIDE  
Temperature  
Range  
Model  
Package Description  
Package Option  
RM-8  
RM-8  
RM-8  
RM-8  
RM-8  
RM-8  
RM-8  
RM-8  
Branding  
W4B  
W4B  
W4B  
W4B  
W4B#  
W4B#  
W4B#  
W4B#  
W4B  
W4B  
W4B#  
W4B#  
W5B  
W5B  
W5B  
W5B  
S1X  
ADG918BRM  
–40°C to +85°C  
–40°C to +85°C  
–40°C to +85°C  
–40°C to +85°C  
–40°C to +85°C  
–40°C to +85°C  
–40°C to +85°C  
–40°C to +85°C  
–40°C to +85°C  
–40°C to +85°C  
–40°C to +85°C  
–40°C to +85°C  
–40°C to +85°C  
–40°C to +85°C  
–40°C to +85°C  
–40°C to +85°C  
–40°C to +85°C  
–40°C to +85°C  
–40°C to +85°C  
–40°C to +85°C  
–40°C to +85°C  
–40°C to +85°C  
8-Lead Mini Small Outline Package (MSOP)  
8-Lead Mini Small Outline Package (MSOP)  
8-Lead Mini Small Outline Package (MSOP)  
8-Lead Mini Small Outline Package (MSOP)  
8-Lead Mini Small Outline Package (MSOP)  
8-Lead Mini Small Outline Package (MSOP)  
8-Lead Mini Small Outline Package (MSOP)  
8-Lead Mini Small Outline Package (MSOP)  
8-Lead Lead Frame Chip Scale Package (LFCSP_VD) CP-8-2  
8-Lead Lead Frame Chip Scale Package (LFCSP_VD) CP-8-2  
8-Lead Lead Frame Chip Scale Package (LFCSP_VD) CP-8-2  
8-Lead Lead Frame Chip Scale Package (LFCSP_VD) CP-8-2  
ADG918BRM-500RL7  
ADG918BRM-REEL  
ADG918BRM-REEL7  
ADG918BRMZ1  
ADG918BRMZ-500RL71  
ADG918BRMZ-REEL1  
ADG918BRMZ-REEL71  
ADG918BCP-500RL7  
ADG918BCP-REEL7  
ADG918BCPZ-500RL71  
ADG918BCPZ-REEL71  
ADG919BRM  
ADG919BRM-500RL7  
ADG919BRM-REEL  
ADG919BRM-REEL7  
ADG919BRMZ1  
ADG919BRMZ-REEL1  
ADG919BRMZ-REEL71  
ADG919BCP-500RL7  
ADG919BCP-REEL7  
ADG919BCPZ-REEL71  
EVAL-ADG918EBZ1  
EVAL-ADG919EBZ1  
8-Lead Mini Small Outline Package (MSOP)  
8-Lead Mini Small Outline Package (MSOP)  
8-Lead Mini Small Outline Package (MSOP)  
8-Lead Mini Small Outline Package (MSOP)  
8-Lead Mini Small Outline Package (MSOP)  
8-Lead Mini Small Outline Package (MSOP)  
8-Lead Mini Small Outline Package (MSOP)  
RM-8  
RM-8  
RM-8  
RM-8  
RM-8  
RM-8  
RM-8  
S1X  
S1X  
8-Lead Lead Frame Chip Scale Package (LFCSP_VD) CP-8-2  
8-Lead Lead Frame Chip Scale Package (LFCSP_VD) CP-8-2  
8-Lead Lead Frame Chip Scale Package (LFCSP_VD) CP-8-2  
Evaluation Board  
W5B  
W5B  
S1X  
Evaluation Board  
1 Z = RoHS Compliant Part, # denotes RoHS compliant product, may be top or bottom marked.  
©2003–2008 Analog Devices, Inc. All rights reserved. Trademarks and  
registered trademarks are the property of their respective owners.  
D03335-0-9/08(C)  
Rev. C | Page 16 of 16  
 
 
 

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