ANALOG DEVICES ADG708 Service Manual

CMOS, 1.8 V to 5.5 V/±2.5 V, 3 Ω

S1S

www.BDTIC.com/ADI

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

Low Voltage 4-/8-Channel Multiplexers

ADG708/ADG709

FUNCTIONAL BLOCK DIAGRAMS

ADG708

S1A

S4A

S1B

8

1 OF 8

DECODER

A0DA1 A2

Figure 1. Figure 2.

EN

S4B

00041-001

ADG709

1 OF 4

DECODER

A0

A1

EN

DA

DB

00041-002

GENERAL DESCRIPTION

The ADG708 and 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 and ADG709 ideal for battery-powered, portable instruments. All channels exhibit break-before-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 and ADG709 are available in 16-lead TSSOP packages.

PRODUCT HIGHLIGHTS

1. Single-/dual-supply operation. The ADG708 and 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. 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.

ADG708/ADG709

www.BDTIC.com/ADI

REVISION HISTORY

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

E

dits 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

Pin Configuration and Function Descriptions........................... 10

Terminology.................................................................................... 11

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

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

Power-Supply Sequencing......................................................... 17

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

Ordering Guide............................................................................... 18

10/00—Revision 0: Initial Version

Rev. B | Page 2 of 20

ADG708/ADG709

www.BDTIC.com/ADI

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

ANALOG SWITCH

Analog Signal Range 0 V to VDD 0 V to VDD V On Resistance (RON) 3 3 Ω typ VS = 0 V to VDD, IDS = 10 mA;

4.5 5 4.5 5 Ω max see Figure 20 On Resistance Match Between 0.4 0.4 Ω typ Channels (ΔRON) 0.8 0.8 Ω max VS = 0 V to VDD, IDS = 10 mA On Resistance Flatness (R

1.2 1.2 Ω max

LEAKAGE CURRENTS VDD = 5.5 V

Source Off Leakage IS (OFF) ±0.01 ±0.01 nA typ VD = 4.5 V/1 V, VS = 1 V/4.5 V; ±20 ±0.1 ±0.3 nA max see Figure 21 Drain Off Leakage ID (OFF) ±0.01 ±0.01 nA typ VD = 4.5 V/1 V, VS = 1 V/4.5 V; ±20 ±0.1 ±0.75 nA max see Figure 22 Channel On Leakage ID, IS (ON) ±0.01 ±0.01 nA typ VD = VS = 1 V or 4.5 V; see Figure 23 ±20 ±0.1 ±0.75 nA max

DIGITAL INPUTS

Input High Voltage, V Input Low Voltage, V 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 CHARACTERISTICS2

t 25 25 ns max VS1 = 3 V/0 V, VS8 = 0 V/3 V Break-Before-Make Time Delay, t 1 1 ns min VS = 3 V; see Figure 25 tON (EN) 14 14 ns typ RL = 300 Ω, CL = 35 pF 25 25 ns max VS = 3 V; see Figure 26 t 12 12 ns max VS = 3 V; see Figure 26 Charge Injection ±3 ±3 pC typ VS = 2.5 V, RS = 0 Ω, CL = 1 nF; see Figure 27 Off Isolation −60 −60 dB typ RL = 50 Ω, CL = 5 pF, f = 10 MHz

−80 −80 dB typ RL = 50 Ω, CL = 5 pF, f = 1 MHz; see Figure 28 Channel-to-Channel Crosstalk −60 −60 dB typ RL = 50 Ω, CL = 5 pF, f = 10 MHz

−80 −80 dB typ RL = 50 Ω, CL = 5 pF, f = 1 MHz; see Figure 29

−3 dB Bandwidth 55 55 MHz typ RL = 50 Ω, CL = 5 pF; see Figure 30 CS (OFF) 13 13 pF typ f = 1 MHz CD (OFF)

14 14 ns typ RL = 300 Ω, CL = 35 pF; see Figure 24

TRANSITION

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

OFF

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

INH

0.8 0.8 V max

INL

) 0.75 0.75 Ω typ VS = 0 V to VDD, IDS = 10 mA

FLAT(ON)

2.4 2.4 V min

8 8 ns typ RL = 300 Ω, CL = 35 pF

OPEN

+85°

1

−40°C to

C

+25°C

+85°C

Unit Test Conditions/Comments

or V

INH

INL

Rev. B | Page 3 of 20

ADG708/ADG709

www.BDTIC.com/ADI

B Version C Version

−40°C to

Parameter +25°C

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 μA max

1

Temperature range is as follows: B Version and C Version: −40°C to +85°C.

2

Guaranteed by design, not subject to production test.

+85°C

+25°C

−40°C to +85°C

Unit Test Conditions/Comments

Rev. B | Page 4 of 20

ADG708/ADG709

www.BDTIC.com/ADI

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

Table 2.

B Version C Version

−40°C to +85°

Parameter +25°C

C

ANALOG SWITCH

Analog Signal Range 0 V to VDD 0 V to VDD V On Resistance (RON) 8 8 Ω typ VS = 0 V to VDD, IDS = 10 mA; 11 12 11 12 Ω max see Figure 20 On Resistance Match Between 0.4 0.4 Ω typ VS = 0 V to VDD , IDS = 10 mA Channels (ΔRON) 1.2 1.2 Ω max

LEAKAGE CURRENTS VDD = 3.3 V

Source Off Leakage IS (OFF) ±0.01 ±0.01 nA typ VS = 3 V/1 V, VD = 1 V/3 V; ±20 ±0.1 ±0.3 nA max see Figure 21 Drain Off Leakage ID (OFF) ±0.01 ±0.01 nA typ VS = 3 V/1 V, VD = 1 V/3 V; ±20 ±0.1 ±0.75 nA max see Figure 22 Channel On Leakage ID, IS (ON) ±0.01 ±0.01 nA typ VS = VD = 1 V or 3 V; see Figure 23 ±20 ±0.1 ±0.75 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 CHARACTERISTICS2

t

18 18 ns typ RL = 300 Ω, CL = 35 pF; see Figure 24

TRANSITION

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

8 8 ns typ RL = 300 Ω, CL = 35 pF

OPEN

1 1 ns min VS = 2 V; see Figure 25 tON (EN) 18 18 ns typ RL = 300 Ω, CL = 35 pF 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 ns max VS = 2 V; see Figure 26 Charge Injection ±3 ±3 pC typ VS = 1.5 V, RS = 0 Ω, CL = 1 nF; see Figure 27 Off Isolation −60 −60 dB typ RL = 50 Ω, CL = 5 pF, f = 10 MHz

−80 −80 dB typ RL = 50 Ω, CL = 5 pF, f = 1 MHz; see Figure 28 Channel-to-Channel Crosstalk −60 −60 dB typ RL = 50 Ω, CL = 5 pF, f = 10 MHz

−80 −80 dB typ RL = 50 Ω, CL = 5 pF, f = 1 MHz; see Figure 29

−3 dB Bandwidth 55 55 MHz typ RL = 50 Ω, CL = 5 pF; see Figure 30 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

1

−40°C to

+25°C

Rev. B | Page 5 of 20

+85°C

Unit Test Conditions/Comments

or V

INH

INL

ADG708/ADG709

www.BDTIC.com/ADI

B Version C Version

−40°C to

Parameter +25°C

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 μA max

1

Temperature ranges are as follows: B Version and C Version: −40°C to +85°C.

2

Guaranteed by design, not subject to production test.

+85°C

+25°C

−40°C to +85°C

Unit Test Conditions/Comments

Rev. B | Page 6 of 20

ANALOG DEVICES ADG708 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

FEATURES

APPLICATIONS

FUNCTIONAL BLOCK DIAGRAMS

GENERAL DESCRIPTION

PRODUCT HIGHLIGHTS

TABLE OF CONTENTS

REVISION HISTORY

SPECIFICATIONS