ANALOG DEVICES ADG709 Service Manual

CMOS, 1.8 V to 5.5 V/±2.5 V, 3 Ω

S1S

FEATURES

1.8 V to 5.5 V single supply
±2.5 V dual supply
3 Ω on resistance

0.75 Ω on resistance flatness
100 pA leakage currents
14 ns switching times
Single 8-to-1 multiplexer ADG708
Differential 4-to-1 multiplexer ADG709
16-lead TSSOP package
Low power consumption
TTL-/CMOS-compatible inputs

APPLICATIONS

Data acquisition systems
Communication systems
Relay replacement
Audio and video switching
Battery-powered systems

GENERAL DESCRIPTION

Low Voltage 4-/8-Channel Multiplexers

ADG708/ADG709

FUNCTIONAL BLOCK DIAGRAMS

ADG708

8

1 OF 8

DECODER

A0DA1 A2

Figure 1.

ADG709

S1A

S4A

EN

DA

00041-001

The ADG708/ADG709 are low voltage, CMOS analog
multiplexers comprising eight single channels and four
differential channels, respectively. The ADG708 switches one of
eight inputs (S1 to S8) to a common output, D, as determined
by the 3-bit binary address lines A0, A1, and A2. The ADG709
switches one of four differential inputs to a common differential
output as determined by the 2-bit binary address lines A0 and
A1. An EN input on both devices is used to enable or disable
the device. When disabled, all channels are switched off.

Low power consumption and an operating supply range of

1.8 V to 5.5 V make the ADG708/ADG709 ideal for battery­powered, portable instruments. All channels exhibit break­before-make switching action preventing momentary shorting
when switching channels.

These switches are designed on an enhanced submicron process
that provides low power dissipation yet gives high switching
speed, very low on resistance, and leakage currents.

On resistance is in the region of a few ohms and is closely matched
between switches and very flat over the full signal range. These parts
can operate equally well as either multiplexers or demultiplexers
and have an input signal range that extends to the supplies.

The ADG708/ADG709 are available in a 16-lead TSSOP.

S1B

EN

DB

00041-002

S4B

1 OF 4

DECODER

A0

A1

Figure 2.

PRODUCT HIGHLIGHTS

1. Single-/dual-supply operation. The ADG708/ADG709 are

fully specified and guaranteed with 3 V and 5 V single-supply
and ±2.5 V dual-supply rails.

2. Low R

3. Low power consumption (<0.01 μW).

4. Guaranteed break-before-make switching action.

5. Small 16-lead TSSOP package.

(3 Ω typical).

ON

Rev. C

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ADG708/ADG709

TABLE OF CONTENTS

Features .............................................................................................. 1

Applications ....................................................................................... 1 

General Description ......................................................................... 1

Functional Block Diagrams ............................................................. 1

Product Highlights ........................................................................... 1

Revision History ............................................................................... 2

Specifications ..................................................................................... 3

Dual Supply ................................................................................... 7

Absolute Maximum Ratings ............................................................ 9

ESD Caution .................................................................................. 9

REVISION HISTORY

4/09−Rev. B to Rev. C

Changes to Table 1 ............................................................................ 3

Changes to Table 2 ............................................................................ 5

Changes to Table 3 ............................................................................ 7

Moved Truth Tables Section .......................................................... 11

Changes to Figure 7, Figure 8, and Figure 9................................ 12

Changes to Figure 13 and Figure 14 ............................................. 13

Moved Terminology Section ......................................................... 18

Changes to Ordering Guide .......................................................... 20

8/06−Rev. A to Rev. B

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

Changes to Absolute Maximum Ratings Section ......................... 9

Added Table 7 and Table 8 ............................................................ 10

Updated Outline Dimensions ....................................................... 18

Changes to Ordering Guide .......................................................... 18

4/02—Rev. 0 to Rev. A

Edits to Features and Product Highlights ..................................... 1

Change to Specifications .............................................................. 2–4

Edits to Absolute Maximum Ratings Notes .................................. 5

Edits to TPCs 2, 5, 6–9, 11, and 15 ............................................. 7–9

Edits to Test Circuits 9 and 10 ...................................................... 11

Addition of Test Circuit 11 ............................................................ 11

10/00—Revision 0: Initial Version

Pin Configurations and Function Descriptions ......................... 10

Truth Tables................................................................................. 11

Typical Performance Characteristics ........................................... 12

Test Circuits ..................................................................................... 15

Terminology .................................................................................... 18

Applications Information .............................................................. 19

Power Supply Sequencing ......................................................... 19

Outline Dimensions ....................................................................... 20

Ordering Guide .......................................................................... 20

Rev. C | Page 2 of 20

ADG708/ADG709

SPECIFICATIONS

VDD = 5 V ± 10%, VSS = 0 V, GND = 0 V, unless otherwise noted.

Table 1.

B Version C Version

−40°C to

Parameter +25°C

+85°C

ANALOG SWITCH

Analog Signal Range

0 V to
V

DD

On Resistance (RON) 3 3 Ω typ

4.5 5 7 4.5 5 7 Ω max
On Resistance Match

Between Channels (ΔR

0.4 0.4 Ω typ

)

ON

0.8 1.5 0.8 1.5 Ω max VS = 0 V to VDD, IDS = 10 mA
On Resistance Flatness

)

(R

FLAT (ON)

0.75 0.75 Ω typ V

1.2 1.65 1.2 1.65 Ω max

LEAKAGE CURRENTS VDD = 5.5 V

Source Off Leakage, IS (Off) ±0.01 ±0.01 nA typ

±20 ±20 ±0.1 ±0.3 ±1 nA max
Drain Off Leakage, ID (Off) ±0.01 ±0.01 nA typ

±20 ±20 ±0.1 ±0.75 ±6 nA max
Channel On Leakage, ID, IS (On) ±0.01 ±0.01 nA typ

±20 ±20 ±0.1 ±0.75 ±6 nA max

DIGITAL INPUTS

Input High Voltage, V
Input Low Voltage, V

2.4 2.4 V min

INH

0.8 0.8 V max

INL

Input Current

I

or I

0.005 0.005 μA typ VIN = V

INL

INH

±0.1 ±0.1 μA max
Digital Input Capacitance,

C

IN

2 2 pF typ

DYNAMIC CHARACTERISTICS1

t

14 14 ns typ

TRANSITION

25 25 25 25 ns max VS1 = 3 V/0 V, VS8 = 0 V/3 V
Break-Before-Make Time

OPEN

Delay, t

8 8 ns typ R

1 1 1 1 ns min VS = 3 V; see Figure 25
tON (EN) 14 14 ns typ RL = 300 Ω, CL = 35 pF
25 25 25 25 ns max VS = 3 V; see Figure 26
t

(EN) 7 7 ns typ RL = 300 Ω, CL = 35 pF

OFF

12 12 12 12 ns max VS = 3 V; see Figure 26
Charge Injection ±3 ±3 pC typ

Off Isolation −60 −60 dB typ RL = 50 Ω, CL = 5 pF, f = 10 MHz

−80 −80 dB typ

−40°C to
+125°C

0 V to
VDD

−40°C to

+25°C

+85°C

−40°C to
+125°C

0 V to
VDD

Unit

V

Test Conditions/
Comments

= 0 V to VDD, IDS = 10 mA;

V

S

see Figure 20

= 0 V to VDD, IDS = 10 mA

S

= 4.5 V/1 V, VS = 1 V/4.5 V;

V

D

see Figure 21

= 4.5 V/1 V, VS = 1 V/4.5 V;

V

D

see Figure 22

= VS = 1 V or 4.5 V;

V

D

see Figure 23

or V

INH

INL

= 300 Ω, CL = 35 pF;

R

L

see Figure 24

= 300 Ω, CL = 35 pF

L

= 2.5 V, RS = 0 Ω,

V

S

C

= 1 nF; See Figure 27

L

= 50 Ω, CL = 5 pF,

R

L

f = 1 MHz; see Figure 28

Rev. C | Page 3 of 20

ADG708/ADG709

B Version C Version

−40°C to

Parameter +25°C

Channel-to-Channel

−60 −60 dB typ

+85°C

Crosstalk

−80 −80 dB typ

−3 dB Bandwidth 55 55 MHz typ

CS (Off) 13 13 pF typ f = 1 MHz
CD (Off)

ADG708 85 85 pF typ f = 1 MHz
ADG709 42 42 pF typ f = 1 MHz

CD, CS (On)

ADG708 96 96 pF typ f = 1 MHz
ADG709 48 48 pF typ f = 1 MHz

POWER REQUIREMENTS VDD = 5.5 V

IDD 0.001 0.001 μA typ Digital inputs = 0 V or 5.5 V

1.0 1.0 1.0 1.0 μA max

1

Guaranteed by design, not subject to production test.

−40°C to
+125°C

+25°C

−40°C to
+85°C

−40°C to
+125°C

Unit

Test Conditions/
Comments

RL = 50 Ω, CL = 5 pF,
f = 10 MHz

= 50 Ω, CL = 5 pF, f = 1 MHz;

R

L

see Figure 29

= 50 Ω, CL = 5 pF;

R

L

see Figure 30

Rev. C | Page 4 of 20

ADG708/ADG709

VDD = 3 V ± 10%, VSS = 0 V, GND = 0 V, unless otherwise noted.

Table 2.

B Version C Version

−40°C to

Parameter +25°C

+85°C

ANALOG SWITCH

Analog Signal Range

On Resistance (RON) 8 8 Ω typ

11 12 14 11 12 14 Ω max
On Resistance Match Between

Channels (ΔR

)

ON

0.4 0.4 Ω typ

1.2 2 1.2 2 Ω max

LEAKAGE CURRENTS VDD = 3.3 V

Source Off Leakage, IS (Off) ±0.01 ±0.01 nA typ

±20 ±20 ±0.1 ±0.3 ±1 nA max
Drain Off Leakage, ID (Off) ±0.01 ±0.01 nA typ

±20 ±20 ±0.1 ±0.75 ±6 nA max
Channel On Leakage, ID, IS (On) ±0.01 ±0.01 nA typ

±20 ±20 ±0.1 ±0.75 ±6 nA max

DIGITAL INPUTS

Input High Voltage, V
Input Low Voltage, V

2.0 2.0 V min

INH

0.8 0.8 V max

INL

Input Current

I

or I

0.005 0.005 μA typ VIN = V

INL

INH

±0.1 ±0.1 μA max
Digital Input Capacitance, CIN 2 2 pF typ

DYNAMIC CHARACTERISTICS1

t

18 18 ns typ

TRANSITION

30 30 30 30 ns max VS1 = 2 V/0 V, VS2 = 0 V/2 V
Break-Before-Make Time

Delay, t

OPEN

8 8 ns typ RL = 300 Ω, CL = 35 pF

1 1 1 1 ns min VS = 2 V; see Figure 25
tON (EN) 18 18 ns typ RL = 300 Ω, CL = 35 pF
30 30 30 30 ns max VS = 2 V; see Figure 26
t

(EN) 8 8 ns typ RL = 300 Ω, CL = 35 pF

OFF

15 15 15 15 ns max VS = 2 V; see Figure 26
Charge Injection ±3 ±3 pC typ

Off Isolation −60 −60 dB typ

−80 −80 dB typ

Channel-to-Channel Crosstalk −60 −60 dB typ

−80 −80 dB typ

−3 dB Bandwidth 55 55 MHz typ

−40°C to
+125°C

0 V to
VDD

−40°C to

+25°C

+85°C

−40°C to
+125°C

0 V to
VDD

Unit

V

Test Conditions/
Comments

= 0 V to VDD, IDS = 10 mA;

V

S

see Figure 20

= 0 V to VDD,

V

S

= 10 mA

I

DS

= 3 V/1 V, VD = 1 V/3 V;

V

S

see Figure 21

= 3 V/1 V, VD = 1 V/3 V;

V

S

see Figure 22

= VD = 1 V or 3 V;

V

S

see Figure 23

or V

INH

INL

= 300 Ω, CL = 35 pF;

R

L

see Figure 24

= 1.5 V, RS = 0 Ω,

V

S

= 1 nF; see Figure 27

C

L

= 50 Ω, CL = 5 pF,

R

L

f = 10 MHz

= 50 Ω, CL = 5 pF,

R

L

f = 1 MHz; see Figure 28

= 50 Ω, CL = 5 pF,

R

L

f = 10 MHz

= 50 Ω, CL = 5 pF,

R

L

f = 1 MHz; see Figure 29

= 50 Ω, CL = 5 pF;

R

L

see Figure 30

Rev. C | Page 5 of 20

ADG708/ADG709

B Version C Version

−40°C to

Parameter +25°C

+85°C

CS (Off) 13 13 pF typ f = 1 MHz
CD (Off)

ADG708 85 85 pF typ f = 1 MHz
ADG709 42 42 pF typ f = 1 MHz

CD, CS (On)

ADG708 96 96 pF typ f = 1 MHz
ADG709 48 48 pF typ f = 1 MHz

POWER REQUIREMENTS VDD = 3.3 V

IDD 0.001 0.001 μA typ Digital inputs = 0 V or 3.3 V

1.0 1.0 1.0 1.0 μA max

1

Guaranteed by design, not subject to production test.

−40°C to
+125°C

+25°C

−40°C to
+85°C

−40°C to
+125°C

Unit

Test Conditions/
Comments

Rev. C | Page 6 of 20