Datasheet

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General Description

The MAX4737/MAX4738/MAX4739 low-voltage, low on-

resistance (R

), quad single-pole/single throw (SPST)

analog switches operate from a single +1.8V to +5.5V

supply. These devices are designed for USB 1.1 and

audio switching applications.

The MAX4737/MAX4738/MAX4739 feature 4.5Ω R

(max) with 1.2Ω flatness and 0.4Ω matching between

channels. These new switches feature guaranteed

operation from +1.8V to +5.5V and are fully specified at

3V and 5V. These switches offer break-before-make

switching (1ns) with t

<80ns and t

OFF

<40ns at

+2.7V. The digital logic inputs are +1.8V logic compati-

ble with a +2.7V to +3.6V supply.

These switches are packaged in a chip-scale package

(UCSP™), significantly reducing the required PC board

area. The chip occupies only a 2mm ✕ 2mm area and

has a 4 ✕ 4 bump array with a bump pitch of 0.5mm.

These switches are also available in a 14-pin TSSOP

and a 16-pin thin QFN (4mm x 4mm) package.

Applications

Battery-Operated Equipment

Audio/Video-Signal Routing

Low-Voltage Data-Acquisition Systems

Sample-and-Hold Circuits

Data-Acquisition Systems

Communications Circuits

Features

♦ USB 1.1 Signal Switching

♦ 2ns (max) Differential Skew

♦ -3dB Bandwidth: >300MHz

♦ Low 20pF On-Channel Capacitance

♦ Low R

4.5Ω (max) (+3V Supply)

3Ω (max) (+5V Supply)

♦ 0.4Ω (max) R

Match (+3V Supply)

♦ 1.2Ω (max) R

Flatness (+3V Supply)

♦ <0.5nA Leakage Current at +25°C

♦ High Off-Isolation: -55dB (10MHz)

♦ Low Crosstalk: -80dB (10MHz)

♦ Low Distortion: 0.03%

♦ +1.8V CMOS-Logic Compatible

♦ Single-Supply Operation from +1.8V to +5.5V

♦ Rail-to-Rail Signal Handling

MAX4737/MAX4738/MAX4739

4.5

Ω

Quad SPST Analog Switches in UCSP

________________________________________________________________ Maxim Integrated Products 1

19-2633; Rev 1; 4/04

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

1234

IN2

COM2

COM1

NO2

IN3

V+

NO1

NO3

GND

IN1

COM3

COM4

NO4

IN4

TOP VIEW

(BUMPS SIDE DOWN)

MAX4737

1234

IN2

COM2

COM1

NC2

IN3

V+

NC1

NC3

GND

IN1

COM3

COM4

NC4

IN4

MAX4738

1234

IN2

COM2

COM1

NC2

IN3

V+

NO1

NO3

GND

IN1

COM3

COM4

NC4

IN4

MAX4739

IN_

LOW

HIGH

NO_

OFF

NC_

OFF

UCSP UCSP UCSP

Pin Configurations/Functional Diagrams/Truth Tables

UCSP is a trademark of Maxim Integrated Products, Inc.

Ordering Information

PART

TEMP RANGE

PIN/BUMP-

PACKAGE

TOP

MARK

MAX4737EUD

-40°C to +85°C

14 TSSOP

—

MAX4737ETE

-40°C to +85°C

16 Thin QFN

—

MAX4737EBE-T

-40°C to +85°C

16 UCSP-16

4737

MAX4738EUD

-40°C to +85°C

14 TSSOP

—

MAX4738ETE

-40°C to +85°C

16 Thin QFN

—

MAX4738EBE-T

-40°C to +85°C

16 UCSP-16

4738

MAX4739EUD

-40°C to +85°C

14 TSSOP

—

MAX4739ETE

-40°C to +85°C

16 Thin QFN

—

MAX4739EBE-T

-40°C to +85°C

16 UCSP-16

4739

Pin Configurations/Functional Diagrams/Truth Tables continued at end of data sheet

Summary of content (16 pages)

PAGE 1
9-2633; Rev 1; 4/04 4.5Ω Quad SPST Analog Switches in UCSP Features ♦ ♦ ♦ ♦ The MAX4737/MAX4738/MAX4739 low-voltage, low onresistance (RON), quad single-pole/single throw (SPST) analog switches operate from a single +1.8V to +5.5V supply. These devices are designed for USB 1.1 and audio switching applications. The MAX4737/MAX4738/MAX4739 feature 4.5Ω RON (max) with 1.2Ω flatness and 0.4Ω matching between channels. These new switches feature guaranteed operation from +1.8V to +5.
PAGE 2
MAX4737/MAX4738/MAX4739 4.5Ω Quad SPST Analog Switches in UCSP ABSOLUTE MAXIMUM RATINGS (All Voltages Referenced to GND) V+, IN_...................................................................-0.3V to +6.0V COM_, NO_, NC_ (Note 1) ...........................-0.3V to (V+ + 0.3V) Continuous Current COM_, NO_, NC_ ...........................±100mA Peak Current COM_, NO_, NC_ (pulsed at 1ms, 10% duty cycle)................................
PAGE 3
4.5Ω Quad SPST Analog Switches in UCSP (V+ = +2.7V to +3.6V, VIH = +1.4V, VIL = +0.5V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at V+ = +3.0V, TA = +25°C, unless otherwise noted.) (Notes 3, 4) PARAMETER SYMBOL CONDITIONS TA MIN TYP MAX tON VNO_, VNC_ = 1.5V; RL = 300Ω, CL = 35pF, Figure 1 40 80 tOFF VNO_, VNC_ = 1.5V; RL = 300Ω, CL = 35pF, Figure 1 Break-Before-Make Time Delay (MAX4739 Only) (Note 8) tBBM VNO_, VNC_ = 1.
PAGE 4
MAX4737/MAX4738/MAX4739 4.5Ω Quad SPST Analog Switches in UCSP ELECTRICAL CHARACTERISTICS—Single +3V Supply (continued) (V+ = +2.7V to +3.6V, VIH = +1.4V, VIL = +0.5V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at V+ = +3.0V, TA = +25°C, unless otherwise noted.) (Notes 3, 4) PARAMETER SYMBOL CONDITIONS TA MIN TMIN to TMAX 1.8 TYP MAX UNITS 5.5 V 1 µA SUPPLY Supply Voltage Range V+ Positive Supply Current I+ V+ = 5.
PAGE 5
4.5Ω Quad SPST Analog Switches in UCSP (V+ = +4.2V to +5.5V, VIH = +2.0V, VIL = +0.8V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at V+ = +5.0V, TA = +25°C, unless otherwise noted.) (Notes 3, 4) PARAMETER SYMBOL CONDITIONS TA MIN +25°C Break-Before-Make Time Delay (MAX4739 Only) (Note 8) tBBM VNO_, VNC_ = 3.0V; RL = 300Ω, CL = 35pF, Figure 2 Skew (Note 8) tSKEW RS = 39Ω, CL = 50pF, Figure 3 TMIN to TMAX TYP MAX UNITS 8 ns 1 TMIN to TMAX 0.
PAGE 6
Typical Operating Characteristics (TA = +25°C, unless otherwise noted.) V+ = 2.5V V+ = 3V V+ = 4.2V 2 1 2 3 4 2 1 5 0.5 1.5 2.0 2.5 3.0 0 COM OFF-LEAKAGE 200 1000 V+ = 5V 800 LEAKAGE CURRENT (pA) COM ON-LEAKAGE 100 2 0 60 600 COM ON-LEAKAGE COM OFF-LEAKAGE 400 85 4 40 CL = 1nF V+ = 5V 30 CL = 1nF V+ = 3V 20 10 0 -40 -15 10 35 60 85 0 1 2 3 4 TEMPERATURE (°C) TEMPERATURE (°C) VCOM (V) SUPPLY CURRENT vs. TEMPERATURE SUPPLY CURRENT vs.
PAGE 7
4.5Ω Quad SPST Analog Switches in UCSP tOFF, V+ = 3.0V 10 RISE DELAY 1.0 0.5 0 -15 10 35 85 60 1.5 2.5 3.5 4.5 RISE TIME TO FALL TIME MISMATCH vs. SUPPLY VOLTAGE RISE TIME TO FALL TIME MISMATCH vs. TEMPERATURE 50 2.5 3.5 5.5 4.5 85 200 0 -40 -15 SUPPLY VOLTAGE (V) 10 35 60 85 1.5 2.5 TEMPERATURE (°C) INPUT RISE/FALL TIME = 15ns FIGURE 3, CL = 50pF V+ = 4.2V 4.5 5.5 FREQUENCY RESPONSE 20 100 50 V+ = 3V/5V 0 -20 ON-LOSS (dB) 150 3.5 SUPPLY VOLTAGE (V) SKEW vs.
PAGE 8
Typical Operating Characteristics (continued) (TA = +25°C, unless otherwise noted.) TOTAL HARMONIC DISTORTION vs. FREQUENCY LOGIC THRESHOLD vs. SUPPLY VOLTAGE 1.6 LOGIC THRESHOLD (V) V+ = 3V RL = 600Ω MAX4737/38/39 toc18 2.0 MAX4737/38/39 toc17 1 THD (%) MAX4737/MAX4738/MAX4739 4.5Ω Quad SPST Analog Switches in UCSP 0.1 VTH+ 1.2 VTH0.8 0.4 0 0.01 10 100 1k 10k 1.5 100k 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.
PAGE 9
4.5Ω Quad SPST Analog Switches in UCSP PIN MAX4738 MAX4737 MAX4739 FUNCTION TSSOP THIN QFN C4 11 11 — — — — — — NO4 Analog-Switch Normally Open Terminal — — — C4 11 11 C4 11 11 NC4 Analog-Switch Normally Closed Terminal D4 12 12 D4 12 12 D4 12 12 IN4 Logic-Control Digital Input D3 13 13 D3 13 13 D3 13 13 IN1 Logic-Control Digital Input C2 14 14 C2 14 14 C2 14 14 V+ Positive Analog Supply — — 8, 16 — — 8, 16 — — 8, 16 N.C.
PAGE 10
MAX4737/MAX4738/MAX4739 4.5Ω Quad SPST Analog Switches in UCSP Test Circuits/Timing Diagrams MAX4737/ MAX4738/ MAX4739 V+ V N_ LOGIC INPUT V+ COM_ NO_ OR NC_ V IH 50% V IL V OUT RL t OFF CL IN_ VOUT GND LOGIC INPUT SWITCH OUTPUT ( 0.9 x VOUT t ON CL INCLUDES FIXTURE AND STRAY CAPACITANCE. RL RL - RON VOUT = VCOM 0.9 x V0UT 0V LOGIC INPUT WAVEFORMS INVERTED FOR SWITCHES THAT HAVE THE OPPOSITE LOGIC SENSE. ) Figure 1.
PAGE 11
4.5Ω Quad SPST Analog Switches in UCSP tri 90% 50% A TxD+ B INPUT A 10% tskew_i CL Rs INPUT A- 90% 50% 10% tfi tro A- TxDRs Rs = 39Ω CL = 50pF B- OUTPUT B 10% 90% 50% tskew_o CL OUTPUT B- 90% 50% 10% tfo |tro - tri| DELAY DUE TO SWITCH FOR RISING INPUT AND RISING OUTPUT SIGNALS. |tfo - tfi| DELAY DUE TO SWITCH FOR FALLING INPUT AND FALLING OUTPUT SIGNALS. |tskew_o| CHANGE IN SKEW THROUGH THE SWITCH FOR OUTPUT SIGNALS. |tskew_i| CHANGE IN SKEW THROUGH THE SWITCH FOR INPUT SIGNALS.
PAGE 12
MAX4737/MAX4738/MAX4739 4.5Ω Quad SPST Analog Switches in UCSP Test Circuits/Timing Diagrams (continued) V+ MAX4737/ MAX4738/ MAX4739 ∆VOUT V+ RGEN VOUT COM_ NC_ OR NO_ VOUT IN OFF CL V GEN GND OFF ON IN_ VIL TO VIH IN ON OFF OFF Q = (∆V OUT )(C L ) LOGIC INPUT WAVEFORMS INVERTED FOR SWITCHES THAT HAVE THE OPPOSITE LOGIC SENSE. Figure 4. Charge Injection V+ C = 0.1µF C = 0.
PAGE 13
4.5Ω Quad SPST Analog Switches in UCSP TOP VIEW MAX4737 MAX4739 MAX4738 NO1 1 14 V+ NC1 1 14 V+ NO1 1 14 V+ COM1 2 13 IN1 COM1 2 13 IN1 COM1 2 13 IN1 NO2 3 12 IN4 NC2 3 12 IN4 NC2 3 12 IN4 COM2 4 11 NO4 COM2 4 11 NC4 COM2 4 11 NC4 IN2 5 10 COM4 IN2 5 10 COM4 IN2 5 10 COM4 IN3 6 9 COM3 IN3 6 9 COM3 IN3 6 9 COM3 8 NO3 GND 7 GND 7 8 NC3 GND 7 TSSOP 8 NO3 TSSOP TSSOP IN1 N.C. NO1 V+ IN1 ON OFF V+ NC2, NC4 OFF ON NC1 NO1, NO3 LOW HIGH N.C.
PAGE 14
Package Information (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.com/packages.) 16L,UCSP.EPS MAX4737/MAX4738/MAX4739 4.
PAGE 15
4.5Ω Quad SPST Analog Switches in UCSP 24L QFN THIN.EPS PACKAGE OUTLINE 12, 16, 20, 24L THIN QFN, 4x4x0.8mm 21-0139 C 1 2 PACKAGE OUTLINE 12, 16, 20, 24L THIN QFN, 4x4x0.8mm 21-0139 C 2 2 ______________________________________________________________________________________ 15 MAX4737/MAX4738/MAX4739 Package Information (continued) (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.
PAGE 16
Package Information (continued) (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.com/packages.) TSSOP4.40mm.EPS MAX4737/MAX4738/MAX4739 4.5Ω Quad SPST Analog Switches in UCSP Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied.