ANALOG DEVICES ADG721 Service Manual

CMOS, Low Voltage, 4 Ω Dual SPST

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FEATURES

1.8 V to 5.5 V single supply 4 Ω (max) on resistance Low on resistance flatness

−3 dB bandwidth >200 MHz Tiny package options

8-lead MSOP 3 mm × 2 mm LFCSP (A grade)

Fast switching times

, 20 ns

, 10 ns

OFF

Low power consumption (<0.1 μW) TTL/CMOS compatible

APPLICATIONS

USB 1.1 signal switching circuits Cell phones PDAs Battery-powered systems Communication systems Sample hold systems Audio signal routing Video switching Mechanical reed relay replacement

GENERAL DESCRIPTION

The ADG721, ADG722, and ADG723 are monolithic CMOS SPST switches. These switches are designed on an advanced submicron process that provides low power dissipation yet gives high switching speed, low on resistance, and low leakage currents. The devices are packaged in both a tiny 3 mm × 2 mm LFCSP and an MSOP, making them ideal for space-constrained applications.

The ADG721, ADG722, and ADG723 are designed to operate

rom a single 1.8 V to 5.5 V supply, making them ideal for use

f in battery-powered instruments and with the new generation of DACs and ADCs from Analog Devices, Inc.

The ADG721, ADG722, and ADG723 contain two independent sin

gle-pole/single-throw (SPST) switches. The ADG721 and

ADG722 differ only in that both switches are normally open

Switches in 3 mm × 2 mm LFCSP

ADG721/ADG722/ADG723

FUNCTIONAL BLOCK DIAGRAMS

IN2

ADG722

IN1

00045-003

IN1

00045-002

ADG721

IN2

Figure 1. Figure 2.

IN1

00045-001

ADG723

IN2

SWITCHES SHOWN FOR A LOGIC "0" INPUT

Figure 3.

and normally closed, respectively. In the ADG723, Switch 1 is normally open and Switch 2 is normally closed.

Each switch of the ADG721, ADG722, and ADG723 conducts

ually well in both directions when on. The ADG723 exhibits

eq break-before-make switching action.

PRODUCT HIGHLIGHTS

1. 1.8 V to 5.5 V single-supply operation.

r y low R

2. Ve

3. L

ow on resistance flatness.

4. −3 dB ban

5. L

ow power dissipation. CMOS construction ensures low

power dissipation.

6. 8-lead MSO

(4 Ω max at 5 V, 10 Ω max at 3 V).

dwidth >200 MHz.

P and 3 mm × 2 mm LFCSP.

Rev. B

Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Anal og Devices for its use, nor for any infringements of patents or ot her 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.

ADG721/ADG722/ADG723

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Features.............................................................................................. 1

Terminology.......................................................................................7

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 Pin Descriptions....................................... 6

REVISION HISTORY

2/07—Rev. A to Rev. B

Updated Format..................................................................Universal

Changes to Specifications................................................................ 3

Changes to Absolute Maximum Ratings....................................... 5

Change to Figure 4 ........................................................................... 6

Updated Outline Dimensions....................................................... 13

Changes to Ordering Guide.......................................................... 13

3/04—Rev. 0 to Rev. A

Additions to Applications................................................................ 1

Changes to Ordering Guide............................................................ 4

Updated Outline Dimensions....................................................... 10

Typical Performance Characteristics..............................................8

Test Circuits..................................................................................... 10

Applications..................................................................................... 12

ADG721/ADG722/ADG723 Supply Voltages ....................... 12

On Response vs. Frequency ...................................................... 12

Off Isolation ................................................................................ 12

Outline Dimensions....................................................................... 13

Ordering Guide .......................................................................... 14

Rev. B | Page 2 of 16

ADG721/ADG722/ADG723

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SPECIFICATIONS

VDD = 5 V ± 10%, GND = 0 V. All specifications −40°C to +85°C, unless otherwise noted.

Table 1.

A, B Grade

Parameter +25°C −40°C to +85°C Unit Test Conditions/Comments

ANALOG SWITCH

Analog Signal Range 0 to VDD V On Resistance, RON 2.5 Ω typ VS = 0 V to VDD, IS = −10 mA 4 5 Ω max See Figure 12 On Resistance Match Between Channels, ∆RON 0.3 Ω typ VS = 0 V to VDD, IS = −10 mA

1.0 Ω max On Resistance Flatness, R

0.85 Ω typ VS = 0 V to VDD, IS = −10 mA

FLAT(ON)

1.5 Ω max

LEAKAGE CURRENTS – A Grade VDD = 5.5 V

Source off Leakage, IS (OFF) ±0.01 nA typ VS = 4.5 V/1 V, VD = 1 V/4.5 V, see Figure 13 Drain off Leakage, ID (OFF) ±0.01 nA typ VS = 4.5 V/1 V, VD = 1 V/4.5 V, see Figure 13 Channel on Leakage, ID, IS (ON) ±0.01 nA typ VS = VD = 1 V or VS = VD = 4.5 V, see Figure 14

LEAKAGE CURRENTS – B Grade VDD = 5.5 V

Source off Leakage, IS (OFF) ±0.01 nA typ VS = 4.5 V/1 V, VD = 1 V/4.5 V ±0.25 ±0.35 nA max Test Circuit 2 Drain off Leakage, ID (OFF) ±0.01 nA typ VS = 4.5 V/1 V, VD = 1 V/4.5 V ±0.25 ±0.35 nA max See Figure 13 Channel on Leakage, ID, IS (ON) ±0.01 nA typ VS = VD = 1 V or VS = VD = 4.5 V ±0.25 ±0.35 nA max See Figure 14

DIGITAL INPUTS

Input High Voltage, V Input Low Voltage, V

2.4 V min

INH

0.8 V max

INL

Input Current

or I

0.005 μA typ VIN = V

INL

INH

INL

or V

INH

±0.1 μA max

DYNAMIC CHARACTERISTICS2

tON 14 ns typ RL = 300 Ω, CL = 35 pF 20 ns max VS = 3 V, see Figure 15 t

6 ns typ RL = 300 Ω, CL = 35 pF

OFF

10 ns max VS = 3 V, see Figure 15 Break-Before-Make Time Delay, tD (ADG723 Only) 7 ns typ RL = 300 Ω, CL = 35 pF 1 ns min VS1 = VS2 = 3 V, see Figure 16 Charge Injection 2 pC typ VS = 2 V, RS = 0 Ω, CL = 1 nF, see Figure 17 Off Isolation −60 dB typ RL = 50 Ω, CL = 5 pF, f = 10 MHz

−80 dB typ RL = 50 Ω, CL = 5 pF, f = 1 MHz, see Figure 18 Channel-to-Channel Crosstalk −77 dB typ RL = 50 Ω, CL = 5 pF, f = 10 MHz

−97 dB typ RL = 50 Ω, CL = 5 pF, f = 1 MHz, see Figure 19 Bandwidth −3 dB 200 MHz typ RL = 50 Ω, CL = 5 pF, see Figure 20 CS (OFF) 7 pF typ CD (OFF) 7 pF typ CD, CS (ON) 18 pF typ

POWER REQUIREMENTS VDD = 5.5 V

IDD 0.001 μA typ Digital inputs = 0 V or 5 V

1.0 μA max

Temperature range: A, B grades, −40°C to +85°C. All specifications apply to both grades unless otherwise stated.

Guaranteed by design; not subject to production test.

Rev. B | Page 3 of 16

ADG721/ADG722/ADG723

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VDD = 3 V ± 10%, GND = 0 V. All specifications −40°C to +85°C, unless otherwise noted.

Table 2.

A, B Grades

Parameter +25°C −40°C to +85°C Unit Test Conditions/Comments

ANALOG SWITCH

Analog Signal Range 0 to VDD V On Resistance, RON 6.5 Ω typ VS = 0 V to VDD, IS = −10 mA 10 Ω max See Figure 12 On Resistance Match Between Channels, ∆RON 0.3 Ω typ VS = 0 V to VDD, IS = −10 mA

1.0 Ω max On Resistance Flatness, R

3.5 Ω typ VS = 0 V to VDD, IS = −10 mA

FLAT(ON)

LEAKAGE CURRENTS – A Grade VDD = 3.3 V

Source off Leakage, IS (OFF) ±0.01 nA typ VS = 3 V/1 V, VD = 1 V/3 V, see Figure 13 Drain off Leakage, ID (OFF) ±0.01 nA typ VS = 3 V/1 V, VD = 1 V/3 V, see Figure 13 Channel on Leakage, ID, IS (ON) ±0.01 nA typ VS = VD = 1 V or 3 V, Figure 14

LEAKAGE CURRENTS – B Grade VDD = 3.3 V

Source off Leakage, IS (OFF) ±0.01 nA typ VS = 3 V/1 V, VD = 1 V/3 V ±0.25 ±0.35 nA max See Figure 13 Drain off Leakage, ID (OFF) ±0.01 nA typ VS = 3 V/1 V, VD = 1 V/3 V ±0.25 ±0.35 nA max See Figure 13 Channel on Leakage, ID, IS (ON) ±0.01 nA typ VS = VD = 1 V or 3 V ±0.25 ±0.35 nA max See Figure 14

DIGITAL INPUTS

Input High Voltage, V Input Low Voltage, V

2.0 V min

INH

0.4 V max

INL

Input Current

or I

0.005 μA typ VIN = V

INL

INH

INL

or V

INH

±0.1 μA max

DYNAMIC CHARACTERISTICS2

tON 16 ns typ RL = 300 Ω, CL = 35 pF 24 ns max VS = 2 V, see Figure 15 t

7 ns typ RL = 300 Ω, CL = 35 pF

OFF

11 ns max VS = 2 V, see Figure 15 Break-Before-Make Time Delay, tD (ADG723 Only) 7 ns typ RL = 300 Ω, CL = 35 pF 1 ns min VS1 = VS2 = 2 V, see Figure 16 Charge Injection 2 pC typ VS = 1.5 V, RS = 0 Ω, CL = 1 nF, see Figure 17 Off Isolation −60 dB typ RL = 50 Ω, CL = 5 pF, f = 10 MHz

−80 dB typ RL = 50 Ω, CL = 5 pF, f = 1 MHz, see Figure 18 Channel-to-Channel Crosstalk −77 dB typ RL = 50 Ω, CL = 5 pF, f = 10 MHz

−97 dB typ RL = 50 Ω, CL = 5 pF, f = 1 MHz, see Figure 19 Bandwidth −3 dB 200 MHz typ RL = 50 Ω, CL = 5 pF, see Figure 20 CS (OFF) 7 pF typ CD (OFF) 7 pF typ CD, CS (ON) 18 pF typ

POWER REQUIREMENTS VDD = 3.3 V

IDD 0.001 μA typ Digital inputs = 0 V or 3 V

1.0 μA max

Temperature range: A, B Grades, −40°C to +85°C. All specifications apply to both grades unless otherwise stated.

Guaranteed by design; not subject to production test.

Rev. B | Page 4 of 16

ADG721/ADG722/ADG723

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ABSOLUTE MAXIMUM RATINGS

TA = 25°C unless otherwise noted.

Table 3.

Parameter Rating

VDD to GND −0.3 V to +7 V Analog, Digital Inputs1

Continuous Current, S or D 30 mA Operating Temperature Range

Industrial (A, B Grade) −40°C to +85°C Storage Temperature Range −65°C to +150°C Junction Temperature +150°C 8-Lead MSOP

θJA Thermal Impedance 206°C/W

θJC Thermal Impedance 44°C/W 8-Lead LFCSP (4-Layer Board)

θJA Thermal Impedance1 50.8°C/W Lead Temperature, Soldering

Vapor Phase (60 sec) 215°C

Infrared (15 sec) 220°C Lead-Free Temperature,

Soldering

IR Reflow, Peak Temperature 260°C (+0/−5°C)

Time at Peak Temperature 10 sec to 40 sec ESD 2 kV

Assumes exposed paddle is tied to ground.

−0.3 V to V whichever occurs first

+ 0.3 V or 30 mA,

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.

ESD CAUTION

Rev. B | Page 5 of 16

+ 11 hidden pages

ANALOG DEVICES ADG721 Service Manual

FEATURES

APPLICATIONS

GENERAL DESCRIPTION

FUNCTIONAL BLOCK DIAGRAMS

PRODUCT HIGHLIGHTS

TABLE OF CONTENTS

REVISION HISTORY

SPECIFICATIONS

ABSOLUTE MAXIMUM RATINGS

ESD CAUTION