Datasheet

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General Description

The MAX4621/MAX4622/MAX4623 are precision, dual,

high-speed analog switches. The single-pole/single-

throw (SPST) MAX4621 and double-pole/single-throw

(DPST) MAX4623 dual switches are normally open

(NO). The single-pole/double-throw (SPDT) MAX4622

has two normally closed (NC) and two NO poles. All

three parts offer low 5Ω on-resistance guaranteed to

match to within 0.5Ω between channels and to remain

flat over the full analog signal range (∆0.5Ω max). They

also offer low leakage (<500pA at +25°C, <5nA at

+85°C) and fast switching times (turn-on time <250ns,

turn-off time <200ns).

These analog switches are ideal in low-distortion appli-

cations and are the preferred solution over mechanical

relays in automatic test equipment or applications

where current switching is required. They have low

power requirements, use less board space, and are more

reliable than mechanical relays.

The MAX4621/MAX4622/MAX4623 are pin-compatible

replacements for the DG401/DG403/DG405, respective-

ly, offering improved overall performance. These mono-

lithic switches operate from a single positive supply

(+4.5V to +36V) or with bipolar supplies (±4.5V to ±18V)

while retaining CMOS-logic input compatibility.

Features

♦ Low On-Resistance: 3Ω (typ), 5Ω (max)

♦ Guaranteed R

Match Between Channels

(0.5Ω max)

♦ Guaranteed Break-Before-Make Operation

(MAX4622)

♦ Guaranteed Off-Channel Leakage <5nA at +85°C

♦ Single-Supply Operation (+4.5V to +36V)

Bipolar-Supply Operation (±4.5V to ±18V)

♦ TTL/CMOS-Logic Compatible

♦ Rail-to-Rail

Analog Signal Handling Capability

♦ Pin Compatible with DG401/DG403/DG405

Applications

Reed Relay Replacement Military Radios

Test Equipment PBX, PABX Systems

Communication Systems Audio-Signal Routing

Data-Acquisition Systems Avionics

MAX4621/MAX4622/MAX4623

Dual, 5

Ω

Analog Switches

________________________________________________________________

Maxim Integrated Products

NO1

IN1

V-

GND

N.C.

COM1

TOP VIEW

MAX4621

V+

IN2

NO2

COM2

N.C.

SO/DIP

MAX4621

LOGIC SWITCH

OFF

NO1

IN1

V-

GND

NC3

COM3

N.C.

COM1

MAX4622

V+

IN2

NO2

COM2

N.C.

COM4

NC4

SO/DIP

MAX4622

LOGIC SWITCHES 1, 2

OFF

SWITCHES 3, 4

OFF

SWITCHES SHOWN FOR LOGIC "0" INPUT

NO1

IN1

V-

GND

NO3

COM3

N.C.

COM1

MAX4623

V+

IN2

NO2

COM2

N.C.

COM4

NO4

SO/DIP

MAX4623

LOGIC SWITCH

OFF

19-1497; Rev 0; 8/99

PART

MAX4621CSE

MAX4621CPE 0°C to +70°C

0°C to +70°C

TEMP. RANGE PIN-PACKAGE

16 Narrow SO

16 Plastic DIP

Ordering Information continued at end of data sheet.

Pin Configurations/Functional Diagrams/Truth Tables

Ordering Information

Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.

Summary of content (12 pages)

PAGE 1
9-1497; Rev 0; 8/99 Dual, 5Ω Analog Switches Features ♦ Low On-Resistance: 3Ω (typ), 5Ω (max) ♦ Guaranteed RON Match Between Channels (0.5Ω max) ♦ Guaranteed Break-Before-Make Operation (MAX4622) ♦ Guaranteed Off-Channel Leakage <5nA at +85°C ♦ Single-Supply Operation (+4.5V to +36V) Bipolar-Supply Operation (±4.
PAGE 2
MAX4621/MAX4622/MAX4623 Dual, 5Ω Analog Switches ABSOLUTE MAXIMUM RATINGS (Voltages Referenced to GND) V+ to GND ..............................................................-0.3V to +44V V- to GND ...............................................................+0.3V to -44V V+ to V-...................................................................-0.3V to +44V VL to GND.....................................................-0.3V to (V+ + 0.3V) All Other Pins to GND (Note 1) ........... (V- - 0.
PAGE 3
Dual, 5Ω Analog Switches (V+ = +15V, V- = -15V, VL = +5V, GND = 0, VINH = +2.4V, VINL = +0.8V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 2) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS ±20.0 V POWER SUPPLY Power-Supply Range ±4.
PAGE 4
MAX4621/MAX4622/MAX4623 Dual, 5Ω Analog Switches ELECTRICAL CHARACTERISTICS—Single Supply (V+ = +12V, V- = 0, VL = +5V, GND = 0, VINH = +2.4V, VINL = +0.8V, TA = TMIN to TMAX, unless otherwise noted. Typical values are TA = +25°C.) (Note 2) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS V+ V ANALOG SWITCH Input Voltage Range (Note 3) On-Resistance On-Resistance Match Between Channels (Notes 3, 4) VCOM_, VNO_, VNC_ RON ∆RON GND ICOM_ = 10mA, VNO_ or VNC_ = 10V TA = +25°C 5.
PAGE 5
Dual, 5Ω Analog Switches (V+ = +12V, V- = 0, VL = +5V, GND = 0, VINH = +2.4V, VINL = +0.8V, TA = TMIN to TMAX, unless otherwise noted. Typical values are TA = +25°C.
PAGE 6
Typical Operating Characteristics (TA = +25°C, unless otherwise noted.) ON-RESISTANCE vs. VCOM AND TEMPERATURE (DUAL SUPPLIES) RON (Ω) 4.5 12 3.5 TA = +25°C 3.0 10 8 V+, V- = ±15V 3.5 2.5 V+, V- = ±20V 2.0 2.5 -15 -10 -5 0 5 10 15 2 -15 20 -10 -5 0 3 6 9 12 LEAKAGE (pA) 6.5 6.0 TA = +25°C 5.0 100 600 V+ = +15V V- = -15V 500 300 200 V+ = +12V V- = 0 100 OFF-LEAKAGE 0 0.1 -100 3.5 0.01 3.
PAGE 7
Dual, 5Ω Analog Switches PIN NAME Operation with Supply Voltages Other than ±15V FUNCTION MAX4621 1, 8 COM1, COM2 Switch Common Terminal 2–7 N.C. Not internally connected 9, 16 NO2, NO1 10, 15 IN2, IN1 11 V+ Positive Supply-Voltage Input 12 VL Logic Supply-Voltage Input 13 GND 14 V- Negative Supply Voltage Input 1, 3, 6, 8 COM_ Switch Common Terminal 2, 7 N.C.
PAGE 8
MAX4621/MAX4622/MAX4623 Dual, 5Ω Analog Switches +5V MAX4621 MAX4622 MAX4623 VL SWITCH INPUT VCOM = +10V FOR tON VCOM = -10V FOR tOFF +15V V+ NC_ OR NO_ COM_ LOGIC INPUT RL = 100Ω CL = 35pF V+ LOGIC INPUT 0 VV- 0 -15V REPEAT TEST FOR EACH SWITCH. tr < 20ns tf < 20ns 50% VO IN1 GND +3V VO = VCOM RL tOFF SWITCH INPUT VCOM SWITCH OUTPUT 0 SWITCH INPUT -VANA RL = RON VO 0.9VO tON 0.
PAGE 9
Dual, 5Ω Analog Switches +15V +5V V+ VL MAX4621/MAX4622/MAX4623 SIGNAL GENERATOR C MAX4621 MAX4622 MAX4623 C VCOM 0, 2.4V IN_ NC_ OR NO_ ANALYZER GND RL 100Ω FREQUENCY TESTED SIGNAL GENERATOR ANALYZER 1MHz AUTOMATIC SYNTHESIZER TRACKING SPECTRUM ANALYZER C V- OFF-ISOLATION = 20LOG -15V VCOM VNC OR VNO Figure 5. Off-Isolation SIGNAL GENERATOR C MAX4621 MAX4622 MAX4623 +15V +5V V+ COM_ VL C 50Ω NC_ OR NO_ IN_ 0, 2.4V 0, 2.
PAGE 10
Ordering Information (continued) PART TEMP.
PAGE 11
Dual, 5Ω Analog Switches PDIPN.
PAGE 12
Dual, 5Ω Analog Switches MAX4621/MAX4622/MAX4623 NOTES Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.