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| 型号： | EVAL-ADG904EBZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 1/17页 |
| 文件大小： | 0K |
| 描述： | BOARD EVAL FOR ADG904 |
| 标准包装： | 1 |
| 主要目的： | 接口，4:1 多路复用器 |
| 嵌入式： | 否 |
| 已用 IC / 零件： | ADG904 |
| 已供物品： | 板 |
Wideband 2.5 GHz, 37 dB Isolation at 1 GHz,
CMOS 1.65 V to 2.75 V, 4:1 Mux/SP4T
Data Sheet
Rev. C
InformationfurnishedbyAnalogDevicesisbelievedtobeaccurateandreliable.However,no
responsibilityisassumedbyAnalogDevicesforitsuse,norforanyinfringementsofpatentsorother
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No
licenseisgrantedbyimplicationorotherwiseunderanypatentorpatentrightsofAnalogDevices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
2004–2013 Analog Devices, Inc. All rights reserved.
FEATURES
Wideband switch: –3 dB @ 2.5 GHz
ADG904: absorptive 4:1 mux/SP4T
ADG904-R: reflective 4:1 mux/SP4T
High off isolation (37 dB @ 1 GHz)
Low insertion loss (1.1 dB dc to 1 GHz)
Single 1.65 V to 2.75 V power supply
CMOS/LVTTL control logic
20-lead TSSOP and 4 mm × 4 mm LFCSP packages
Low power consumption (1 μA maximum)
Qualified for automotive applications
APPLICATIONS
Wireless communications
General-purpose RF switching
Dual-band applications
High speed filter selection
Digital transceiver front end switch
IF switching
Tuner modules
Antenna diversity switching
FUNCTIONAL BLOCK DIAGRAMS
ADG904
50
50
50
50
1 OF 4 DECODER
RFC
A0
A1
EN
RF1
RF2
RF3
RF4
04504-0-001
ADG904-R
1 OF 4 DECODER
RFC
A0
A1
EN
RF1
RF2
RF3
RF4
04504-0-012
Figure 1.
Figure 2.
GENERAL DESCRIPTION
The ADG904 and ADG904-R are wideband analog 4:1
multiplexers that use a CMOS process to provide high isolation
and low insertion loss to 1 GHz. The ADG904 is an
absorptive/matched mux with 50 Ω terminated shunt legs; the
ADG904-R is a reflective mux. These devices are designed such
that the isolation is high over the dc to 1 GHz frequency range.
The ADG904 and ADG904-R switch one of four inputs to a
common output, RFC, as determined by the 3-bit binary
address lines A0, A1, and EN. A Logic 1 on the EN pin disables
the device.
The parts have on-board CMOS control logic, which eliminates
the need for external control circuitry. The control inputs
are both CMOS and LVTTL compatible. The low power
consumption of these devices makes them ideally suited
for wireless applications and general-purpose high
frequency switching.
PRODUCT HIGHLIGHTS
1.
37 dB off isolation @ 1 GHz
2.
1.1 dB insertion loss @ 1 GHz
3.
20-lead TSSOP/LFCSP packages
04504-0-028
FREQUENCY (Hz)
10G
10k
100k
1M
10M
100M
1G
IN
SER
TION
LOSS
(
d
B
)
–10
–20
–30
–40
–50
–60
–70
–80
VDD = 2.5V
S12
S21
04504-0-029
FREQUENCY (Hz)
10G
10k
100k
1M
10M
100M
1G
IN
SER
TION
LOSS
(
d
B
)
–0.3
–0.4
–0.5
–0.6
–0.7
–0.8
–0.9
–1.0
–1.1
–1.2
–1.3
–1.4
–1.5
–1.6
–1.7
–1.8
–1.9
–2.0
–2.1
–2.2
–2.3
–2.4
–2.5
–2.6
–2.7
–2.8
–2.9
–3.0
VDD = 2.5V
TA = 25°C
Figure 3. Off Isolation vs. Frequency
Figure 4. Insertion Loss vs. Frequency
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