Datasheet

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CMOS, 1.8 V to 5.5 V/±2.5 V, 3 Ω

Low Voltage 4-/8-

Channel Multiplexers

Data Sheet

ADG708/ADG709

Rev. D Document Feedback

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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

Qualified for automotive applications

APPLICATIONS

Data acquisition systems

Communication systems

Relay replacement

Audio and video switching

Battery-powered systems

GENERAL DESCRIPTION

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 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.

FUNCTIONAL BLOCK DIAGRAMS

A1 A2

ADG708

1 OF 8

DECODER

00041-001

Figure 1.

S1A

S4A

S1B

S4B

ADG709

1 OF 4

DECODER

00041-002

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 Ω typical).

3. Low power consumption (<0.01 μW).

4. Guaranteed break-before-make switching action.

5. Small 16-lead TSSOP package.

The ADG708/ADG709 are available in a 16-l e a d T S S OP.

Summary of content (20 pages)

PAGE 1
CMOS, 1.8 V to 5.5 V/±2.5 V, 3 Ω Low Voltage 4-/8-Channel Multiplexers ADG708/ADG709 Data Sheet FEATURES FUNCTIONAL BLOCK DIAGRAMS 1.8 V to 5.5 V single supply ±2.5 V dual supply 3 Ω on resistance 0.
PAGE 2
ADG708/ADG709 Data Sheet TABLE OF CONTENTS Features .....................................................................................1 Truth Tables......................................................................... 11 Applications...............................................................................1 Typical Performance Characteristics ....................................... 12 General Description ..................................................................1 Test Circuits....
PAGE 3
Data Sheet ADG708/ADG709 SPECIFICATIONS VDD = 5 V ± 10%, VSS = 0 V, GND = 0 V, unless otherwise noted. Table 1. Parameter ANALOG SWITCH Analog Signal Range On Resistance (RON) On Resistance Match Between Channels (ΔRON) On Resistance Flatness (RFLAT (ON)) +25°C B Version −40°C to −40°C to +85°C +125°C 0 V to VDD 5 7 0.8 1.5 Drain Off Leakage, ID (Off ) ±0.01 Channel On Leakage, ID, IS (On) ±0.01 4.5 0.4 1.65 ±20 ±20 ±20 7 Ω max Ω typ 0.8 1.5 Ω max Ω typ 1.2 1.
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ADG708/ADG709 Data Sheet B Version −40°C to −40°C to +85°C +125°C C Version −40°C to −40°C to +85°C +125°C −80 −80 dB typ −3 dB Bandwidth 55 55 MHz typ CS (Off ) CD (Off ) ADG708 ADG709 CD, CS (On) ADG708 ADG709 POWER REQUIREMENTS IDD 13 13 pF typ Test Conditions/ Comments RL = 50 Ω, CL = 5 pF, f = 10 MHz RL = 50 Ω, CL = 5 pF, f = 1 MHz; see Figure 29 RL = 50 Ω, CL = 5 pF; see Figure 30 f = 1 MHz 85 42 85 42 pF typ pF typ f = 1 MHz f = 1 MHz 96 48 96 48 pF typ pF typ f = 1 MHz f = 1 MH
PAGE 5
Data Sheet ADG708/ADG709 VDD = 3 V ± 10%, VSS = 0 V, GND = 0 V, unless otherwise noted. Table 2. Parameter ANALOG SWITCH Analog Signal Range On Resistance (RON) On Resistance Match Between Channels (ΔRON) +25°C B Version −40°C to −40°C to +85°C +125°C 0 V to VDD 8 11 0.4 ±0.01 Drain Off Leakage, ID (Off ) ±0.01 Channel On Leakage, ID, IS (On) ±0.01 0 V to VDD 8 12 1.2 LEAKAGE CURRENTS Source Off Leakage, IS (Off ) 14 11 0.4 2 12 1.2 ±20 ±20 ±20 ±20 ±20 ±0.1 ±0.01 ±0.3 ±0.1 ±0.
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ADG708/ADG709 Parameter CS (Off ) CD (Off ) ADG708 ADG709 CD, CS (On) ADG708 ADG709 POWER REQUIREMENTS IDD Data Sheet +25°C 13 B Version −40°C to −40°C to +85°C +125°C Unit pF typ Test Conditions/ Comments f = 1 MHz 85 42 85 42 pF typ pF typ f = 1 MHz f = 1 MHz 96 48 96 48 pF typ pF typ f = 1 MHz f = 1 MHz VDD = 3.3 V Digital inputs = 0 V or 3.3 V 0.001 0.001 1.0 1 +25°C 13 C Version −40°C to −40°C to +85°C +125°C 1.0 1.0 Guaranteed by design, not subject to production test. Rev.
PAGE 7
Data Sheet ADG708/ADG709 DUAL SUPPLY VDD = 2.5 V ± 10%, VSS = –2.5 V ± 10%, GND = 0 V, unless otherwise noted. Table 3. Parameter ANALOG SWITCH Analog Signal Range On Resistance (RON) On Resistance Match Between Channels (ΔRON) On Resistance Flatness (RFLAT (ON)) +25°C B Version −40°C to −40°C to +85°C +125°C VSS to VDD 2.5 4.5 0.4 5 7 0.8 1.5 1.65 Channel On Leakage, ID, IS (On) ±0.01 ±20 ±20 ±20 ±20 ±20 Ω max Ω typ 0.8 1.5 1.0 1.65 Ω max Ω typ Ω max nA typ ±0.1 ±0.01 ±0.3 ±0.
PAGE 8
ADG708/ADG709 Data Sheet B Version −40°C to −40°C to +85°C +125°C C Version −40°C to −40°C to +85°C +125°C −80 −80 dB typ −3 dB Bandwidth 55 55 MHz typ CS (Off ) CD (Off ) ADG708 ADG709 CD, CS (On) ADG708 ADG709 POWER REQUIREMENTS IDD 13 13 pF typ Test Conditions/ Comments RL = 50 Ω, CL = 5 pF, f = 10 MHz RL = 50 Ω, CL = 5 pF, f = 1 MHz; see Figure 29 RL = 50 Ω, CL = 5 pF; see Figure 30 f = 1 MHz 85 42 85 42 pF typ pF typ f = 1 MHz f = 1 MHz 96 48 96 48 pF typ pF typ f = 1 MHz f = 1 MH
PAGE 9
Data Sheet ADG708/ADG709 ABSOLUTE MAXIMUM RATINGS TA = 25°C, unless otherwise noted. Table 4.
PAGE 10
ADG708/ADG709 Data Sheet PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS A0 1 16 A1 A0 1 16 A1 EN 2 15 A2 EN 2 15 GND VSS 3 13 VDD S1A 4 ADG709 12 S5 S2A 5 TOP VIEW (Not to Scale) 6 11 S6 S3A 6 11 S3B S4 7 10 S7 S4A 7 10 S4B D 8 DA 8 4 ADG708 S2 5 TOP VIEW (Not to Scale) S3 9 S8 Figure 3. ADG708 Pin Configuration 14 V DD 13 S1B 12 S2B 9 DB 00041-004 3 S1 00041-003 14 GND VSS Figure 4. ADG709 Pin Configuration Table 5.
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Data Sheet ADG708/ADG709 TRUTH TABLES Table 7. ADG708 Truth Table A2 X1 0 0 0 0 1 1 1 1 1 A1 X1 0 0 1 1 0 0 1 1 A0 X1 0 1 0 1 0 1 0 1 EN 0 1 1 1 1 1 1 1 1 Switch Condition None 1 2 3 4 5 6 7 8 X = Don’t care. Table 8. ADG709 Truth Table A1 X1 0 0 1 1 1 A0 X1 0 1 0 1 EN 0 1 1 1 1 On Switch Pair None 1 2 3 4 X = Don’t care. Rev.
PAGE 12
ADG708/ADG709 Data Sheet TYPICAL PERFORMANCE CHARACTERISTICS 8 8 TA = 25°C VSS = 0V 7 VDD = 3V VSS = 0V 7 +125°C 6 5 VDD = 3.3V 4 VDD = 4.5V VDD = 5.5V 3 4 –40°C 3 2 2 1 1 0 1 2 3 4 VD OR VS – DRAIN OR SOURCE VOLTAGE (V) 5 +25°C 0 00041-005 0 +85°C 5 0 Figure 5. On Resistance as a Function of VD (VS) for Single Supply 0.5 1.0 1.5 2.0 2.5 VD OR VS – DRAIN OR SOURCE VOLTAGE (V) 3.0 00041-008 VDD = 2.7V ON RESISTANCE (Ω) ON RESISTANCE (Ω) 6 Figure 8.
PAGE 13
Data Sheet ADG708/ADG709 0.08 VDD = 3V VSS = 0V TA = 25°C 0.04 ID (ON) 0.35 VDD = +3V 0.30 0.25 CURRENT (nA) CURRENT (nA) 0.12 0 IS (OFF) –0.04 ID (OFF) 0.20 0.15 ID (ON) 0.10 0 0.5 2.5 1.0 1.5 2.0 VD, (VS = VDD – VD) (V) 3.0 0 00041-011 –0.12 0 40 80 60 100 120 Figure 14. Leakage Currents as a Function of Temperature 0.12 10m VDD = +2.5V VSS = –2.5V TA = 25°C 0.08 TA = 25°C 1m CURRENT (A) 0 IS (OFF) –0.04 VDD = +2.5V VSS = –2.5V 100µ ID (ON), VS = VD 0.
PAGE 14
ADG708/ADG709 Data Sheet 20 0 TA = 25°C –40 0 –60 –20 –100 –30 100k 1M FREQUENCY (Hz) 10M 100M Figure 17. Crosstalk vs. Frequency VDD = 5V TA = 25°C –10 –15 1M FREQUENCY (Hz) 10M 100M 00041-018 ATTENUATION (dB) –5 100k –40 –3 VDD = +2.5V VSS = –2.5V –2 –1 0 1 2 VOLTAGE (V) 3 Figure 19. Charge Injection vs. Source Voltage 0 –20 30k VDD = +3V VSS = 0V –10 –80 –120 30k VDD = +5V VSS = 0V Figure 18. On Response vs. Frequency Rev.
PAGE 15
Data Sheet ADG708/ADG709 TEST CIRCUITS IDS VDD VSS VDD VSS V1 S1 S D ID (OFF) S2 D A S8 RON = V1/IDS VD VS GND Figure 20. On Resistance IS(OFF) 0.8V EN Figure 22. ID (OFF) VDD VSS VDD VSS VDD VSS VDD VSS S1 A ID (ON) S1 D S2 VS 00041-022 00041-020 VS D A S8 VD S8 GND Figure 21. IS (OFF) VIN VSS VDD VSS 3V S1 A1 50Ω Figure 23. ID (ON) VDD A2 2.4V EN 00041-023 GND VS 00041-021 VD 0.8V EN ADDRESS DRIVE (VIN) VS1 50% 50% 0V S2 TO S7 A0 2.
PAGE 16
ADG708/ADG709 Data Sheet VDD VDD VSS 3V VSS ENABLE DRIVE (VIN) A2 VS S1 tOFF (EN) S2 TO S8 VO ADG708* EN VIN 50% 0V A1 A0 50% VOUT D CL 35pF RL 300Ω GND 50Ω 0.9VO 0.9VO OUTPUT 0V 00041-026 tON (EN) *SIMILAR CONNECTION FOR ADG709. Figure 26. Enable Delay, tON (EN), tOFF (EN) VDD A2 VDD VSS 3V VSS LOGIC INPUT (VIN) 0V A1 RS VS ADG708* D S CL VOUT 1nF EN VIN ΔVOUT VOUT QINJ = CL × ΔVOUT GND 00041-027 A0 *SIMILAR CONNECTION FOR ADG709. Figure 27.
PAGE 17
Data Sheet ADG708/ADG709 VSS VDD 0.1µF 0.1µF NETWORK ANALYZER VSS VDD A2 A1 S 50Ω A0 VS D EN RL 50Ω GND INSERTION LOSS = 20 log VOUT WITH SWITCH VOUT WITHOUT SWITCH Figure 30. Bandwidth Rev. D | Page 17 of 20 VOUT 00041-030 2.
PAGE 18
ADG708/ADG709 Data Sheet TERMINOLOGY VDD Most positive power supply potential. VSS Most negative power supply in a dual-supply application. In single-supply applications, tie VSS to ground at the device. GND Ground (0 V) reference. tON (EN) Delay time between the 50% and 90% points of the EN digital input and the switch on condition. tOFF (EN) Delay time between the 50% and 90% points of the EN digital input and the switch off condition. S Source terminal. Can be an input or output. D Drain terminal.
PAGE 19
Data Sheet ADG708/ADG709 APPLICATIONS INFORMATION POWER SUPPLY SEQUENCING When using CMOS devices, take care to ensure correct power supply sequencing. Incorrect power supply sequencing can result in the device being subjected to stresses beyond the maximum ratings listed in Figure 4. Always apply digital and analog inputs after power supplies and ground. For single-supply operation, tie VSS to GND as close to the device as possible. Rev.
PAGE 20
ADG708/ADG709 Data Sheet OUTLINE DIMENSIONS 5.10 5.00 4.90 16 9 4.50 4.40 4.30 6.40 BSC 1 8 PIN 1 1.20 MAX 0.15 0.05 0.20 0.09 0.30 0.19 0.65 BSC COPLANARITY 0.10 SEATING PLANE 0.75 0.60 0.45 8° 0° COMPLIANT TO JEDEC STANDARDS MO-153-AB Figure 31.