Wideband 2.5 GHz, 37 dB Isolation at 1 GHz,
CMOS 1.65 V to 2.75 V, 4:1 Mux/SP4T
Data Sheet
ADG904/ADG904-R
Rev. C Document Feedback
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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) 10G10k 100k 1M 10M 100M 1G
INSERTION LOSS (dB)
–10
–20
–30
–40
–50
–60
–70
–80
V
DD
= 2.5V
S12
S21
04504-0-029
FREQUENCY (Hz) 10G10k 100k 1M 10M 100M 1G
INSERTION LOSS (dB)
–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
V
DD
= 2.5V
T
A
= 25°C
Figure 3. Off Isolation vs. Frequency Figure 4. Insertion Loss vs. Frequency
ADG904/ADG904-R Data Sheet
Rev. C | Page 2 of 16
TABLE OF CONTENTS
Specifications ..................................................................................... 3
Absolute Maximum Ratings ............................................................ 4
ESD Caution .................................................................................. 4
Pin Configurations and Function Descriptions ........................... 5
Terminology ...................................................................................... 6
Typical Performance Characteristics ............................................. 7
Test Circuits ....................................................................................... 9
Applications ..................................................................................... 11
Absorptive vs. Reflective ........................................................... 11
Antenna Diversity Switch .......................................................... 11
Filter Selection ............................................................................ 11
Tx/Rx Switching ......................................................................... 11
Evaluation Board ............................................................................ 12
Outline Dimensions ....................................................................... 13
Ordering Guide .......................................................................... 14
Automotive Products ................................................................. 14
REVISION HISTORY
/13—Rev. B to Rev. C
Changes to Features Section............................................................ 1
Changes to Figure 6 .......................................................................... 5
Updated Outline Dimensions ....................................................... 13
Changes to Ordering Guide .......................................................... 14
Added Automotive Product Section ............................................ 14
2/07—Rev. A to Rev. B
Updated Outline Dimensions ....................................................... 13
Changes to Ordering Guide .......................................................... 14
8/05—Rev. 0 to Rev. A
Added LFCSP Package ....................................................... Universal
Changes to Specifications ................................................................ 3
Changes to Absolute Maximum Ratings ....................................... 4
Inserted New Figure 6 ...................................................................... 5
Changes to Table 4 ............................................................................ 5
Changes to Outline Dimensions ................................................... 13
Changes to Ordering Guide .......................................................... 14
4/04—Revision 0: Initial Version
Data Sheet ADG904/ADG904-R
Rev. C | Page 3 of 16
SPECIFICATIONS
VDD = 1.65 V to 2.75 V, GND = 0 V, Input Power = 0 dBm, all specifications TMIN to TMAX, unless otherwise noted.1
Table 1.
B Version
Parameter Symbol Conditions Min Typ2 Max Unit
AC ELECTRICAL CHARACTERISTICS
Operating Frequency3 DC 2 GHz
3 dB Frequency4 2.5 GHz
Input Power4 0 V dc bias 7 dBm
0.5 V dc bias 16 dBm
Insertion Loss S21, S12 DC to 100 MHz; VDD = 2.5 V ± 10% 0.4 0.8 dB
500 MHz; VDD = 2.5 V ± 10% 0.6 0.9 dB
1000 MHz; VDD = 2.5 V ± 10% 1.1 1.5 dB
Isolation—RFC to RF1–RF4 S21, S12 100 MHz 51 60 dB
500 MHz
35
45
dB
1000 MHz
30
37
dB
Crosstalk S21, S12 100 MHz 50 58 dB
500 MHz 35 32 dB
1000 MHz 30 35 dB
Return Loss (On Channel)4 S11, S22 DC to 100 MHz 21 27 dB
500 MHz 18 26 dB
1000 MHz 15 30 dB
Return Loss (Off Channel)4 S11, S22 DC to 100 MHz 18 22 dB
500 MHz 16 23 dB
1000 MHz 18 22 dB
On Switching Time4 tON (EN) 50% EN to 90% RF 8.5 10 ns
Off Switching Time4 tOFF (EN) 50% EN to 10% RF 13 16 ns
Transition Time tTRANS 50% Ax to 10% RF 12 15 ns
Rise Time4 tRISE 10% to 90% RF 3 5 ns
Fall Time4 tFALL 90% to 10% RF 7.5 9 ns
1 dB Compression4 P–1 dB 1000 MHz 16 dBm
Third-Order Intermodulation Intercept IP3 900 MHz/901 MHz, 4 dBm 26.5 31 dBm
Video Feedthrough5 3 mV p-p
DC ELECTRICAL CHARACTERISTICS
Input High Voltage VINH VDD = 2.25 V to 2.75 V 1.7 V
VINH VDD = 1.65 V to 1.95 V 0.65 VCC V
Input Low Voltage VINL VDD = 2.25 V to 2.75 V 0.7 V
VINL VDD = 1.65 V to 1.95 V 0.35 VCC V
Input Leakage Current II 0 ≤ VIN ≤ 2.75 V ± 0.1 ± 1 µA
CAPACITANCE4
RF Port On Capacitance CRF ON f = 1 MHz 3 pF
Digital Input Capacitance C f = 1 MHz 2 pF
POWER REQUIREMENTS
VDD 1.65 2.75 V
Quiescent Power Supply Current IDD Digital inputs = 0 V or VDD 0.1 1 µA
1 Temperature range B version: −40°C to +85°C.
2 Typical values are at VDD = 2.5 V and 25°C, unless otherwise stated.
3 Operating frequency is the point at which insertion loss degrades by 1.5 dB.
4 Guaranteed by design, not subject to production test.
5 Video feedthrough is 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.
ADG904/ADG904-R Data Sheet
Rev. C | Page 4 of 16
ABSOLUTE MAXIMUM RATINGS
TA = 25°C, unless otherwise noted.
Table 2.
Parameter Rating
VDD to GND –0.5 V to +4 V
Inputs to GND –0.5 V to VDD + 0.3 V1
Continuous Current 30 mA
Input Power 18 dBm
Operating Temperature Range
Industrial (B Version) –40°C to +85°C
Storage Temperature Range
–65°C to +150°C
Junction Temperature 150°C
TSSOP Package
θJA Thermal Impedance 143°C/W
LFCSP Package
θJA Thermal Impedance
(4-Layer Board)
30.4°C/W
Lead Temperature, Soldering (10 sec) 300°C
IR Reflow, Peak Temperature (<20 sec) 235°C
ESD 1 kV
1 RFx off port inputs to ground = –0.5 V to VDD – 0.5 V.
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. Only one absolute maximum rating may be
applied at any one time.
Table 3. Truth Table
A1 A0 EN ON Switch1
X X 1 None
0 0 0 RF1
0 1 0 RF2
1 0 0 RF3
1 1 0 RF4
1 Off switches have: 50 Ω termination to GND (ADG904); shunt to GND
(ADG904-R).
ESD 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 this product 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.
Data Sheet ADG904/ADG904-R
Rev. C | Page 5 of 16
PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS
1
2
3
4
5
6
7
8
20
19
18
17
16
15
14
13
V
DD
G
ND
RF1
G
ND
G
ND
RF3
G
ND
A0
A1
GND
RF2
GND
GND
RF4
GND
ADG904
ADG904-R
TOP VIEW
(Not to Scale)
04504-0-002
EN
9
10
12
11
G
ND
RFC
GND
GND
04504-0-003
14
13
12
1
3
4
RF2
15 GND
GND
GND
11 RF4
GND
GND 2
RF1
GND 5
RF3
7
GND 6
GND
8
RFC 9
GND 10
GND
19 V
DD
20 GND
18 EN
17 A0
16 A1
NOTES
1. THE EXPOSED PAD IS TIED
TO SUBST RATE, V
SS
.
A
DG904/ADG904-R
TOP VIEW
(Not to Scale)
Figure 5. 20-Lead TSSOP (RU-20) Figure 6. 20-Lead 4 mm × 4mm LFCSP (CP-20-6)
Table 4. Pin Function Descriptions
Pin No.
20-Lead TSSOP 20-Lead LFCSP Mnemonic Function
1 18 EN Active Low Digital Input. When high, the device is disabled and all switches
are off. When low, Ax logic inputs determine On switches.
2 19 VDD Power Supply Input. These parts can be operated from 1.65 V to 2.75 V.
VDD should be decoupled to GND.
3, 5, 6, 8, 9, 11, 12,
13, 15, 16, 18
1, 3, 4, 6, 7, 9, 10,
12, 13, 15, 20
GND Ground Reference Point for All Circuitry on the Part.
4 2 RF1 RF1 Port.
7 5 RF3 RF3 Port.
10 8 RFC Common RF Port for Switch.
14 11 RF4 RF4 Port.
17 14 RF2 RF2 Port.
19 16 A1 Logic Control Input.
20 17 A0 Logic Control Input.
N/A 21 EPAD Exposed Pad. The exposed pad is tied to substrate, VSS.
ADG904/ADG904-R Data Sheet
Rev. C | Page 6 of 16
TERMINOLOGY
Table 5.
Parameter Description
VDD Most Positive Power Supply Potential.
I
DD
Positive Supply Current.
GND Ground (0 V) Reference.
Ax Logic Control Input.
VINL Maximum Input Voltage for Logic 0.
VINH Minimum Input Voltage for Logic 1.
I
INL
(I
INH
)
Input Current of the Digital Input.
CIN Digital Input Capacitance.
tON (EN) Delay between Applying the EN Control Input and the Output Switching On.
tOFF (EN) Delay between Applying the EN Control Input and the Output Switching Off.
tRISE Rise Time. Time for the RF signal to rise from 10% of the on level to 90% of the on level.
tFALL Fall Time. Time for the RF signal to fall from 90% of the on level to 10% of the on level.
t
TRANS
Transition Time. Delay between applying the digital control input and the output switching on.
Off Isolation The Attenuation between Input and Output Ports of the Switch when the Switch Control Voltage is in the Off Condition.
Insertion Loss The Attenuation between Input and Output Ports of the Switch when the Switch Control Voltage is in the On Condition.
Crosstalk Measure of Unwanted Signal Coupled through from One Channel to Another as a Result of Parasitic Capacitance.
P–1 dB 1 dB Compression Point. The RF input power level at which the switch insertion loss increases by 1 dB over its low level
value. P–1 dB is a measure of how much power the on switch can handle before the insertion loss increases by 1 dB.
IP
3
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, and the nonlinearity of the switch causes these false tones to be generated.
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 voltage standing wave ratio (VSWR) can be calculated from conversion charts. VSWR indicates
the degree of matching present at a switch RF port.
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.
Data Sheet ADG904/ADG904-R
Rev. C | Page 7 of 16
TYPICAL PERFORMANCE CHARACTERISTICS
04504-0-015
FREQUENCY (Hz) 10G10k 100k 1M 10M 100M 1G
INSERTION LOSS (dB)
–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 T
A
= 25°C
V
DD
= 2.25V
V
DD
= 2.75V
V
DD
= 2.50V
Figure 7. Insertion Loss vs. Frequency over Supplies
(RF1–RF4, S12, and S21)
04504-0-014
FREQUENCY (Hz) 10G10k 100k 1M 10M 100M 1G
INSERTION LOSS (dB)
–0.3
–0.4
–0.5
–0.6
–0.7
–0.8
–0.9
–1.0
–1.1
V
DD
= 2.50V
V
DD
= 2.75V
V
DD
= 2.25V
T
A
= 25°C
Figure 8. Insertion Loss vs. Frequency over Supplies
(RF1–RF4, S12, and S21). Zoomed Figure 7 Plot
04504-0-013
FREQUENCY (Hz) 10G10k 100k 1M 10M 100M 1G
INSERTION LOSS (dB)
–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
–2.8
–2.9
–2.7
–3.0
V
DD
= 1.65V
V
DD
= 1.80V
V
DD
= 1.95V
T
A
= 25°C
Figure 9. Insertion Loss vs. Frequency over Supplies
(RF1–RF4, S12, and S21)
04504-0-016
FREQUENCY (Hz) 10G10k 100k 1M 10M 100M 1G
INSERTION LOSS (dB)
–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
T
A
= +85°C
T
A
= –40°C
T
A
= +25°C
V
DD
= 2.5V
Figure 10. Insertion Loss vs. Frequency over Temperature
((RF1–RF4, S12, and S21)
04504-0-017
FREQUENCY (Hz) 10G10k 100k 1M 10M 100M 1G
INSERTION LOSS (dB)
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
V
DD
= 1.65V TO 2.75V
S12
S21
Figure 11. Isolation vs. Frequency over Supplies
(RF1–RF4, S12, and S21)
04504-0-018
FREQUENCY (Hz) 10G10k 100k 1M 10M 100M 1G
INSERTION LOSS (dB)
–10
–20
–40
–30
–50
–60
–70
–80
–90
–100
T
A
= –40°C
T
A
=+25°C
T
A
=+85°C
V
DD
= 2.5V
Figure 12. Isolation vs. Frequency over Temperature
(RF1–RF4, S12, and S21)
ADG904/ADG904-R Data Sheet
Rev. C | Page 8 of 16
04504-0-020
FREQUENCY (Hz) 10G10k 100k 1M 10M 100M 1G
INSERTION LOSS (dB)
0
–5
–10
–15
–20
–25
–30
–35
V
DD
= 2.5V
T
A
= 25°C
OFF SWITCH
ON SWITCH
Figure 13. Return Loss vs. Frequency (RF1–RF4, S11)
04504-0-025
FREQUENCY (Hz) 10G10k 100k 1M 10M 100M 1G
CROSSTALK (dB)
–10
–20
–30
–40
–50
–60
–70
–80
V
DD
= 2.5V
T
A
= 25°C
Figure 14. Crosstalk vs. Frequency
04504-0-026
V
DD
= 5V
V
A
= 5V
V
B
= 0V
CH1 Ch2 M 5.00ns
CH3 1.00V
100mV 100mV
1
3
TEK RUN: 5.00GS/s ET ENVELOPE T
[]
RF1/3
A1
Figure 15. Switch Timing
04504-0-027
CH3 1.00mV
CH1 1.00V M 20.0ns
: 2.40mV
1
3
T
[]
RFC
A0
T
TRIG'D
Figure 16. Video Feedthrough
04504-0-019
FREQUENCY (MHz) 900100 200 300 400 500 600 700 800
IP3 (dB)
35
30
25
20
15
10
5
0
V
DD
= 2.5V
T
A
= 25°C
Figure 17. IP3 vs. Frequency
04503-0-025
FREQUENCY (MHz) 15000 250 500 750 1000 1250
P-1dB (dBm)
18
14
16
12
10
6
8
2
4
0
V
DD
= 2.5V
T
A
= 25°C
Figure 18. P-1 dB vs. Frequency
Data Sheet ADG904/ADG904-R
Rev. C | Page 9 of 16
TEST CIRCUITS
t
ON
50% 50%
90% 10%
V
Ax
V
OUT
t
OFF
10F
V
S
Ax
RFx
RFC
R
L
50
V
OUT
GND
V
DD
V
DD
04504-0-004
Figure 19. Switch Timing: tON, tOFF
V
Ax
V
OUT
50% 50%
90% 90% 10%
10%
t
FALL
t
RISE
V
DD
V
DD
10F
V
S
Ax
RFx
RFC
GND
R
L
50
V
OUT
04504-0-005
Figure 20. Switch Timing: tRISE, tFALL
V
S
NETWORK
ANALYZER
OFF ISOLATION = 20log V
OUT
V
S
V
DD
10F
V
DD
50
V
OUT
R
L
50
ADG904R
RF2
RF1
RFC
50
04504-0-006
GND
A0 A1
1 0F 4
DECODER
EN
Figure 21. Off Isolation
V
S
NETWORK
ANALYZER
INSERTION LOSS = 20log V
OUT
V
S
V
DD
10F
V
DD
50
V
OUT
R
L
50
GND
A0 A1
1 0F 4
DECODER
ADG904R
RF2
RFx
RFC 50
04504-0-007
EN
Figure 22. Insertion Loss
V
S
NETWORK
ANALYZER
CROSSTALK = 20log V
OUT
V
S
V
DD
10F
V
DD
50
V
OUT
R
L
50
ADG904R
RF2
RF1
RFC
50
04504-0-008
GND
A0 A1
1 0F 4
DECODER
EN
Figure 23. Crosstalk
V
DD
10F
V
DD
ADG904R
RF2
RFx
RFC
NC
NC
OSCILLOSCOPE
04504-0-009
GND
A0 A1
1 0F 4
DECODER
EN
Figure 24. Video Feedthrough
ADG904/ADG904-R Data Sheet
Rev. C | Page 10 of 16
SPECTRUM
ANALYZER
V
DD
10F
V
DD
ADG904R
RF2
RF1
RFC
GND
50
COMBINER
RF
SOURCE
RF
SOURCE
04504-0-010
A0 A1
1 0F 4
DECODER
EN
Figure 25. IP3
SPECTRUM
ANALYZER
VDD
10F
VDD
ADG904R
RF2
RF1
RFC 50
RF
SOURCE VS
04504-0-011
GND
A0 A1
1 0F 4
DECODER
EN
Figure 26. P-1 dB
Data Sheet ADG904/ADG904-R
Rev. C | Page 11 of 16
APPLICATIONS
The ADG904 and ADG904-R 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. They may be used
in applications such as switchable filters, transmitters and
receivers for radar systems, and communications systems from
base stations to cell phones.
The ADG9xx wideband switches are designed to meet the
demands of devices that transmit at ISM band frequencies of
1 GHz and higher. The low insertion loss, high isolation
between ports, single pin control interface, no requirement for
dc blocking capacitors, and TTL interface compatibility of these
parts make them cost-effective and an easy-to-integrate
switching solution for many high frequency switching
applications and low power applications where the parts can
handle up to 16 dBm of power.
ABSORPTIVE VS. REFLECTIVE
The ADG904 is an absorptive (matched) switch with 50 Ω
terminated shunt legs; the ADG904-R is a reflective switch with
0 Ω terminated shunts to ground. The ADG904 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 ADG904 is
therefore ideal for applications that require minimum
reflections back to the RF source. It also ensures that the
maximum power is transferred to the load.
The ADG904-R reflective switch is suitable for applications
where high off port VSWR does not matter, and the switch has
other performance features. It may be used in many applica-
tions, including high speed filter selection. In most cases, an
absorptive switch may be used instead of a reflective switch, but
not vice versa.
ANTENNA DIVERSITY SWITCH
The ADG904 is ideal for use as an antenna diversity switch,
switching different antennas into the tuner. The low insertion
loss ensures minimum signal loss and high isolation between
channels, making these SP4T switches suitable for switching
applications in tuner modules and set-top boxes.
TUNER
ADG904
CABLE
RF1
RF2
RF3
RF4
VGA
ANTENNA
04504-0-021
Figure 27. Tuner Modules
FILTER SELECTION
The ADG904 can be used to switch high frequency signals
between different filters and to multiplex the signal to the
output. These SP4T switches are also ideal for high speed
signal routing.
RF
OUT
RFC
ADG904ADG904
RF1
RF2
RF3
RF4
RF1
RF2
RF3
RF4
RF
IN
RFC
04504-0-022
Figure 28. Filter Selection
Tx/Rx SWITCHING
The low insertion loss and high isolation between ports ensure
that the ADG904 and ADG904-R are suitable transmit/receive
switches for all ISM band and wireless LAN, providing the
required isolation between the transmit signal and the
receive signal.
ADG904
Tx
Rx
Rx
Rx
Rx
ANTENNA
04504-0-023
Figure 29. Tx/Rx Switching
ADG904/ADG904-R Data Sheet
Rev. C | Page 12 of 16
EVALUATION BOARD
The ADG904/ADG904-R evaluation board allows designers
to evaluate the high performance, wideband switches with
minimal effort.
Only a power supply and a network analyzer, along with the
evaluation board, are required to demonstrate that these devices
meet user requirements. An application note, available with the
evaluation board, provides complete operating information.
The RFC port (see Figure 30) is connected through a 50 Ω
transmission line to the bottom left SMA connector, J4. RF1,
RF2, RF3, and RF4 are connected through 50 Ω transmission
lines to SMA connectors J5, J6, J7, and J8, respectively. A through
transmission line connects J9 and J10; this transmission line
is used to estimate the loss of the PCB over the environmental
conditions being evaluated.
The board is constructed of four-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 a ground plane model using
a trace width of 0.024 inches, clearance to ground plane of
0.008 inches, dielectric thickness of 0.02 inches, and a metal
thickness of 0.0021 inches.
04504-0-024
Figure 30. ADG904/ADG904-R Evaluation Board Top View
Data Sheet ADG904/ADG904-R
Rev. C | Page 13 of 16
OUTLINE DIMENSIONS
COMPLIANT TO JEDEC STANDARDS MO-153-AC
20
1
11
10
6.40 BSC
4.50
4.40
4.30
PIN 1
6.60
6.50
6.40
SEATING
PLANE
0.15
0.05
0.30
0.19
0.65
BSC 1.20 MAX 0.20
0.09 0.75
0.60
0.45
8°
0°
COPLANARIT
Y
0.10
Figure 31. 20-Lead Thin Shrink Small Outline Package [TSSOP]
(RU-20)
Dimensions shown in millimeters
0.50
BSC
0.65
0.60
0.55
0.30
0.25
0.18
COMPLIANT
TO
JEDEC STANDARDS MO-220-WGGD-1.
BOTTOM VIEWTOP VIEW
EXPOSED
PAD
PIN1
INDICATOR
4.10
4.00 SQ
3.90
SEATING
PLANE
0.80
0.75
0.70 0.05 MAX
0.02 NOM
0.20 REF
0.20 MIN
COPLANARITY
0.08
PIN 1
INDICATOR
2.30
2.10 SQ
2.00
FOR PROPER CONNECTION OF
THE EXPOSED PAD, REFER TO
THE PIN CONFIGURATION AND
FUNCTION DESCRIPTIONS
SECTION OF THIS DATA SHEET.
1
20
6
10
11
1516
5
08-16-2010-B
Figure 32. 20-Lead Lead Frame Chip Scale Package [LFCSP_WQ]
4 mm × 4 mm Body, Very Very Thin Quad
(CP-20-6)
Dimensions shown in millimeters
ADG904/ADG904-R Data Sheet
Rev. C | Page 14 of 16
ORDERING GUIDE
Model
1, 2
Temperature Range
Package Description
Package Option
ADG904BCPZ –40°C to +85°C 20-Lead Lead Frame Chip Scale Package [LFCSP_WQ] CP-20-6
ADG904BCPZ-R-REEL –40°C to +85°C 20-Lead Lead Frame Chip Scale Package [LFCSP_WQ] CP-20-6
ADG904BCPZ-REEL –40°C to +85°C 20-Lead Lead Frame Chip Scale Package [LFCSP_WQ] CP-20-6
ADG904BCPZ-REEL7 –40°C to +85°C 20-Lead Lead Frame Chip Scale Package [LFCSP_WQ] CP-20-6
ADG904BRUZ –40°C to +85°C 20-Lead Thin Shrink Small Outline Package [TSSOP] RU-20
ADG904BRUZ-R –40°C to +85°C 20-Lead Thin Shrink Small Outline Package (TSSOP) RU-20
ADG904BRUZ-REEL7 –40°C to +85°C 20-Lead Thin Shrink Small Outline Package (TSSOP) RU-20
ADW54011Z-0REEL7 –40°C to +85°C 20-Lead Thin Shrink Small Outline Package (TSSOP) RU-20
EVAL-ADG904EBZ Evaluation Board
EVAL-ADG904REBZ Evaluation Board
1 Z = RoHS compliant part.
2 W = Qualified for Automotive Applications.
AUTOMOTIVE PRODUCTS
The ADW54011Z model is available with controlled manufacturing to support the quality and reliability requirements of automotive
applications. Note that this automotive model may have specifications that differ from the commercial models; therefore, designers
should review the Specifications section of this data sheet carefully. Only the automotive grade product shown are available for use in
automotive applications. Contact your local Analog Devices account representative for specific product ordering information and to
obtain the specific Automotive Reliability reports for this model.
Data Sheet ADG904/ADG904-R
Rev. C | Page 15 of 16
NOTES
ADG904/ADG904-R Data Sheet
Rev. C | Page 16 of 16
NOTES
©2004–2013 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
D04504–0–/13(C)
