Datasheet

ManualsBrandsANALOG DEVICES ManualsInterface ICsInterface IC - multiplexers TSSOP 20

Table Of Contents

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

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 registered trademarks are the property of their respective owners.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Technical Support www.analog.com

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

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

. A Logic 1 on the

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

= 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

= 2.5V

= 25°C

Figure 3. Off Isolation vs. Frequency Figure 4. Insertion Loss vs. Frequency

Summary of content (17 pages)

PAGE 1
Wideband 2.5 GHz, 37 dB Isolation at 1 GHz, CMOS 1.65 V to 2.75 V, 4:1 Mux/SP4T ADG904/ADG904-R Data Sheet FEATURES FUNCTIONAL BLOCK DIAGRAMS 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.
PAGE 2
Powered by TCPDF (www.tcpdf.org) IMPORTANT LINKS for the ADG904_904R* Last content update 08/16/2013 12:48 pm PARAMETRIC SELECTION TABLES Choosing the Correct Switch or Multiplexer for Your Application Switches and Multiplexers Product Selection Guide Multiplexer Parametric Search DESIGN COLLABORATION COMMUNITY Collaborate Online with the ADI support team and other designers about select ADI products. Follow us on Twitter: www.twitter.com/ADI_News Like us on Facebook: www.facebook.
PAGE 3
ADG904/ADG904-R Data Sheet TABLE OF CONTENTS Specifications..................................................................................... 3 Absorptive vs. Reflective ........................................................... 11 Absolute Maximum Ratings ............................................................ 4 Antenna Diversity Switch .......................................................... 11 ESD Caution ..................................................................................
PAGE 4
Data Sheet ADG904/ADG904-R 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. Parameter AC ELECTRICAL CHARACTERISTICS Operating Frequency 3 3 dB Frequency 4 Input Power4 Symbol Conditions 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.
PAGE 5
ADG904/ADG904-R Data Sheet ABSOLUTE MAXIMUM RATINGS TA = 25°C, unless otherwise noted. Table 2. Parameter VDD to GND Inputs to GND Continuous Current Input Power Operating Temperature Range Industrial (B Version) Storage Temperature Range Junction Temperature TSSOP Package θJA Thermal Impedance LFCSP Package θJA Thermal Impedance (4-Layer Board) Lead Temperature, Soldering (10 sec) IR Reflow, Peak Temperature (<20 sec) ESD 1 Rating –0.5 V to +4 V –0.5 V to VDD + 0.
PAGE 6
Data Sheet ADG904/ADG904-R PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS 20 A0 19 A1 18 GND GND 6 17 GND RF1 GND GND RF3 RF2 16 GND TOP VIEW (Not to Scale) 15 GND RF3 7 14 RF4 GND 8 13 GND GND 9 12 GND RFC 10 11 GND 1 2 3 4 5 TOP VIEW (Not to Scale) 15 14 13 12 11 GND RF2 GND GND RF4 GND 6 GND 7 RFC 8 GND 9 GND 10 RF1 4 GND 5 ADG904 ADG904-R 04504-0-002 GND 3 NOTES 1. THE EXPOSED PAD IS TIED TO SUBSTRATE, VSS. Figure 5.
PAGE 7
ADG904/ADG904-R Data Sheet TERMINOLOGY Table 5. Parameter VDD IDD GND Ax VINL VINH IINL (IINH) CIN tON (EN) Description Most Positive Power Supply Potential. Positive Supply Current. Ground (0 V) Reference. Logic Control Input. Maximum Input Voltage for Logic 0. Minimum Input Voltage for Logic 1. Input Current of the Digital Input. Digital Input Capacitance. Delay between Applying the EN Control Input and the Output Switching On.
PAGE 8
Data Sheet ADG904/ADG904-R VDD = 2.75V VDD = 2.50V 1M 10M 100M FREQUENCY (Hz) 1G 10G –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 VDD = 2.5V –3.0 10k 100k Figure 7. Insertion Loss vs. Frequency over Supplies (RF1–RF4, S12, and S21) TA = –40°C TA = +25°C TA = +85°C 1M 10M 100M FREQUENCY (Hz) 1G 10G 04504-0-016 VDD = 2.25V 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.
PAGE 9
ADG904/ADG904-R Data Sheet 0 [T] TRIG'D  : 2.40mV T –5 INSERTION LOSS (dB) A0 –10 –15 1 –20 OFF SWITCH 3 –25 RFC ON SWITCH 1M 10M 100M FREQUENCY (Hz) 1G 10G CH1 1.00V CH3 1.00mV M 20.0ns Figure 16. Video Feedthrough Figure 13. Return Loss vs. Frequency (RF1–RF4, S11) –10 35 –20 30 –30 25 –40 20 IP3 (dB) –50 –60 15 10 –70 5 100k 1M 10M 100M FREQUENCY (Hz) 1G 10G 0 100 200 Figure 14. Crosstalk vs. Frequency TEK RUN: 5.
PAGE 10
Data Sheet ADG904/ADG904-R TEST CIRCUITS VDD 10F VOUT VDD VDD RL 50 ADG904R RFx VDD VOUT 50% VS RL 50 Ax 50% RF2 VAx 90% VOUT GND 10% tON tOFF 50 VS 1 0F 4 DECODER GND 04504-0-004 RFx RFC NETWORK ANALYZER 50 RFC A0 A1 EN VOUT VS INSERTION LOSS = 20log Figure 19. Switch Timing: tON, tOFF 04504-0-007 10F Figure 22.
PAGE 11
ADG904/ADG904-R Data Sheet VDD VDD 10F 10F ADG904R VDD 50 RF2 GND A0 A1 RF1 RF SOURCE SPECTRUM ANALYZER EN COMBINER RF2 Figure 25. IP3 RF SOURCE VS 1 0F 4 DECODER GND A0 A1 EN Figure 26. P-1 dB Rev.
PAGE 12
Data Sheet ADG904/ADG904-R 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. ABSORPTIVE VS.
PAGE 13
ADG904/ADG904-R Data Sheet EVALUATION BOARD The ADG904/ADG904-R evaluation board allows designers to evaluate the high performance, wideband switches with minimal effort. 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.
PAGE 14
Data Sheet ADG904/ADG904-R OUTLINE DIMENSIONS 6.60 6.50 6.40 20 11 4.50 4.40 4.30 6.40 BSC 1 10 PIN 1 0.65 BSC 1.20 MAX 0.15 0.05 COPLANARITY 0.10 0.30 0.19 0.20 0.09 0.75 0.60 0.45 8° 0° SEATING PLANE COMPLIANT TO JEDEC STANDARDS MO-153-AC Figure 31. 20-Lead Thin Shrink Small Outline Package [TSSOP] (RU-20) Dimensions shown in millimeters 0.30 0.25 0.18 0.50 BSC PIN 1 INDICATOR 20 16 15 1 EXPOSED PAD 2.30 2.10 SQ 2.00 11 TOP VIEW 0.80 0.75 0.70 SEATING PLANE 0.65 0.60 0.
PAGE 15
ADG904/ADG904-R Data Sheet ORDERING GUIDE Model 1, 2 ADG904BCPZ ADG904BCPZ-R-REEL ADG904BCPZ-REEL ADG904BCPZ-REEL7 ADG904BRUZ ADG904BRUZ-R ADG904BRUZ-REEL7 ADW54011Z-0REEL7 EVAL-ADG904EBZ EVAL-ADG904REBZ 1 2 Temperature Range –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 Package Description 20-Lead Lead Frame Chip Scale Package [LFCSP_WQ] 20-Lead Lead Frame Chip Scale Package [LFCSP_WQ] 20-Lead Lead Frame Chip Scale Package [LFCSP
PAGE 16
Data Sheet ADG904/ADG904-R NOTES Rev.