ADG918BRM [ADI]
Wideband, 43dB Isolation 1GHz, CMOS 1.65 V to 2.75V, 2:1 Mux/SPDT Switches; 宽带， 43分贝隔离1GHz的CMOS 1.65 V至2.75V ， 2 ： 1多路复用器/ SPDT开关
| 型号： | ADG918BRM |
| 厂家： | 
ADI |
| 描述： | Wideband, 43dB Isolation 1GHz, CMOS 1.65 V to 2.75V, 2:1 Mux/SPDT Switches |
| 文件： | 总4页 (文件大小：121K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
PRELIMINARY TECHNICAL DATA
Wideband, 43dBIsolation@1GHz,
CMOS 1.65 V to 2.75V, 2:1 Mux/SPDT Switches
a
ADG918/ADG919
Preliminary Technical Data
FEATURES
Wideband DC to 2GHz
FUNCTIONAL BLOCK DIAGRAM
ADG918/ADG919 Absorptive/Reflective Switches
High Off Isolation (43 dB @ 1 GHz)
Low Insertion Loss (1 dB DC to 900 MHz)
Single 1.65 to 2.75 V power supply
CMOS/LVTTL Control Logic
ADG918
RF1
RF COMMON
CONTROL
50Ω
RF2
8 Lead MSOP & Tiny 3 x 3mm CSP Packages
Low Power Consumption (5µA)
50Ω
APPLICATIONS
WirelessCommunications
General Purpose RF switching
Dual Band Applications
Filter Selection
Antenna Switch
Digital Transceiver Front-End Switch
IF Switching
ADG919
RF1
RF2
RF COMMON
CONTROL
GENERAL DESCRIPTION
The ADG918/ADG919 are wideband switches using a
CMOS process to provide high isolation and low insertion
loss to 1GHz. The ADG918 is an absorptive switch
having 50 ohm terminated shunt legs, while the ADG919
is a reflective switch. These devices are designed such that
the isolation is high over the DC to 1GHz frequency
range. They have on board CMOS control logic, thus
eliminating the need for external controlling circuitry.
The control inputs are both CMOS and LVTTL
compatible. The low power consumption of these CMOS
devices makes them ideally suited to wireless applications
and general purpose high frequency switching.
Table 1. Truth Table
Signal Path
Control
0
1
RF2 to RF Common
RF1 to RF Common
Figure 1. Isolation vs Frequency
REV. PrC Sept 2002
Figure 2. Loss vs Frequency
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
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
www.analog.com
Fax: 781/326-8703
Analog Devices, Inc., 2002
PRELIMINARY TECHNICAL DATA
ADG918/ADG919–SPECIFICATIONS1
(VDD = +1.65 V to +2.75 V, GND = 0 V, All specifications TMIN to TMAX unless otherwise noted)
B Version
Typ2
Parameter
Symbol Conditions
Min
Max
Units
AC ELECTRICAL CHARACTERISTICS
Operating Frequency
Insertion Loss
DC
2
GHz
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
ns
S
S
21, S12
DC - 100 MHz
500 MHz
900 MHz
1 MHz
100 MHz
500 MHz
1000 MHz
1 MHz
100 MHz
500 MHz
1000 MHz
DC - 100 MHz
500 MHz
1000 MHz
50% Control to 90% RF
50% Control to 10% RF
DC to 1000 MHz
900MHz, 5dBm
0.4
0.65
1.0
100
55
Isolation- RF to RF1/RF2
Isolation - RF1 to RF2
21, S12
43
100
55
S21, S12
30
26
Return Loss (On Channel)
S
11, S22
23
5
4
20
35
On switching Time
Off Switching Time
1 dB Compression
Third Order Intermodulation intercept
tON
tOFF
P-1dB
IP3
ns
dBm
dBm
DC ELECTRICAL CHARACTERISTICS
Input High Voltage
VINH
VINH
VINL
VINL
II
VDD = 2.3 V to 2.75 V
VDD = 1.65 V to 1.95 V
VDD = 2.3 V to 2.75 V
VDD = 1.65 V to 1.95 V
0 Յ VIN Յ 2.75 V
1.7
0.65VCC
V
V
V
V
Input Low Voltage
0.7
0.35VCC
1
Input Leakage Current
µA
CAPACITANCE3
RF1/RF2, RF Port On Capacitance
Control Input Capacitance
CRF ON
CIN
f = 1 MHz
f = 1 MHz
2
2
pF
pF
POWER REQUIREMENTS
VDD
Quiescent Power Supply Current
1.65
2.75
5
V
µA
IDD
Digital Inputs = 0 V or VDD
1
N O T E S
1Temperature range is as follows:
B Version: –40°C to +85°C.
2
Typical values are at +25°C unless otherwise stated.
Guaranteed by design, not subject to production test.
3
Specifications subject to change without notice.
–2–
REV. PrC
PRELIMINARY TECHNICAL DATA
ADG918/ADG919
PIN CONFIGURATION
ABSOLUTE MAXIMUM RATINGS1
(TA
= +25°C unless otherwise noted)
VDD to GND
Inputs to GND
Input Power
-0.5 V to +4 V
-0.5 V to VDD + 0.3V
TBD dBm
8-Lead MSOP (RM-8)
3x3mm CSP (CP-8)
Operating Temperature Range
Industrial (B Version)
Storage Temperature Range
Junction Temperature
MSOP Package
–40°C to +85°C
–65°C to +150°C
+150°C
1
2
3
4
8
7
6
5
RF1
GND
GND
RF2
V
DD
ADG918/
ADG919
TOP VIEW
CONTROL
GND
θJA Thermal Impedance
CSP Package
206°C/W
(Not to Scale)
RFCommon
θJA Thermal Impedance
TBD°C/W
Lead Temperature, Soldering (10seconds)
IR Reflow, Peak Temperature (<20 seconds)
300°C
+235°C
NOTES
1Stressesabovethoselistedunder“AbsoluteMaximumRatings”maycausepermanent
damagetothedevice.Thisisastressratingonlyandfunctionaloperationofthedevice
at these or any other conditions above those listed in the operational sections of this
specification is not implied. Exposure to absolute maximum rating conditions for
extendedperiodsmayaffectdevicereliability.Onlyoneabsolutemaximumratingmay
be applied at any one time.
ORDERING GUIDE
Package Descriptions
Model
Temperature Range
Branding
Package Options
ADG918BRM
ADG918BCP
ADG919BRM
ADG919BCP
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
MSOP (Micro Small Outline Package)
Chip Scale Package
MSOP (Micro Small Outline Package)
Chip Scale Package
RM-8
CP-8
RM-8
CP-8
CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily
accumulate on the human body and test equipment and can discharge without detection.
Although the ADG919 features proprietary ESD protection circuitry, permanent damage may
occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD
precautions are recommended to avoid performance degradation or loss of functionality.
REV. PrC
–3–
PRELIMINARY TECHNICAL DATA
ADG918/ADG919
OUTLINE DIMENSIONS
Dimensions shown in inches and (mm).
MSOP
(RM-8)
0.122 (3.10)
0.114 (2.90)
5
4
8
0.122 (3.10)
0.114 (2.90)
0.199 (5.05)
0.187 (4.75)
1
PIN 1
0.0256 (0.65) BSC
0.120 (3.05)
0.112 (2.84)
0.120 (3.05)
0.112 (2.84)
0.043 (1.09)
0.037 (0.94)
0.006 (0.15)
0.002 (0.05)
33
27
0.018 (0.46)
SEATING
PLANE
0.011 (0.28)
0.003 (0.08)
0.028 (0.71)
0.016 (0.41)
0.008 (0.20)
Chip Scale Package
(CP-8)
3 x 3mm
TBD
REV. PrC
–4–
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