Datasheet

ManualsBrandsMAXIM INTEGRATED ManualsInterface ICsInterface IC - analogue switches QSOP 16

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SPI/QSPI are trademarks of Motorola, Inc.

MICROWIRE is a trademark of National Semiconductor Corp.

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General Description

The MAX4562/MAX4563 serial-interface controlled

switches are ideal for multimedia applications. Each

device features 30Ω max on-resistance (R

), 5Ω R

match, and 5Ω R

flatness. Audio off-isolation and

crosstalk at 20kHz is -85dB, and video off-isolation and

crosstalk at 10MHz is -55dB. Both devices feature

“clickless” mode operation for audio applications.

The MAX4562/MAX4563 contain two normally open sin-

gle-pole/double-throw (SPDT) switches and two normal-

ly open single-pole/single-throw (SPST) switches. The

MAX4562 features a 2-wire I

C™-compatible serial

interface. The MAX4563 features a 3-wire SPI™/QSPI™/

MICROWIRE™-compatible serial interface. Both parts

are available in 16-pin QSOP packages and operate

over the commercial and extended temperature

ranges.

Applications

Set-Top Boxes

PC Multimedia Boards

Audio Systems

Video Conferencing Systems

Features

♦ Selectable Soft-Switching Mode for “Clickless”

Audio Operation

♦ 30Ω max On-Resistance

♦ Audio Performance

-85dB Off-Isolation at 20kHz

-85dB Crosstalk at 20kHz

-0.007% THD

♦ Video Performance

-55dB Off-Isolation at 10MHz

-55dB Crosstalk at 10MHz

♦ T-Switch Configurable for Improved Off-Isolation

♦ Serial Interface

2-Wire I

C-Compatible (MAX4562)

3-Wire SPI/QSPI/MICROWIRE-Compatible

(MAX4563)

♦ Single-Supply Operation from +2.7V to +5.5V

MAX4562/MAX4563

Serially Controlled, Clickless

Audio/Video Switches

________________________________________________________________

Maxim Integrated Products

SCL (SCLK)

SDA (DIN)

A1 (DOUT)

COM4

( ) ARE FOR MAX4563

NO3

NO4

COM3NO2B

COM2

NO2A

GND

NO1B

COM1

NO1A

V+

QSOP

TOP VIEW

MAX4562

MAX4563

A0 (CS)

19-1461; Rev 0; 4/99

PART

MAX4562CEE

MAX4562EEE

MAX4563CEE

0°C to +70°C

-40°C to +85°C

0°C to +70°C

TEMP. RANGE PIN-PACKAGE

16 QSOP

Pin Configuration

Ordering Information

MAX4563EEE -40°C to +85°C 16 QSOP

Typical Operating Circuit

SIGNAL OUTSIGNAL IN

COM3

NO3

NO2B

NO2A

COM2

Summary of content (16 pages)

PAGE 1
9-1461; Rev 0; 4/99 Serially Controlled, Clickless Audio/Video Switches The MAX4562/MAX4563 serial-interface controlled switches are ideal for multimedia applications. Each device features 30Ω max on-resistance (RON), 5Ω RON match, and 5Ω RON flatness. Audio off-isolation and crosstalk at 20kHz is -85dB, and video off-isolation and crosstalk at 10MHz is -55dB. Both devices feature “clickless” mode operation for audio applications.
PAGE 2
MAX4562/MAX4563 Serially Controlled, Clickless Audio/Video Switches ABSOLUTE MAXIMUM RATINGS V+ to GND ................................................................-0.3V to +6V NO_ _, COM_, DOUT to GND (Note 1) ........-0.3V to (V+ + 0.3V) SCL, SDA, CS, SCLK, DIN, A0, A1 to GND..............-0.3V to +6V Continuous Current into Any Terminal..............................±20mA Peak Current (NO_ _, COM_ pulsed at 1ms, 10% duty cycle max) .....................................................
PAGE 3
Serially Controlled, Clickless Audio/Video Switches (V+ = +5V ±5%, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.
PAGE 4
MAX4562/MAX4563 Serially Controlled, Clickless Audio/Video Switches ELECTRICAL CHARACTERISTICS—Single +3V Supply (continued) (V+ = +3V ±10%, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 2) PARAMETER On-Resistance Flatness (Note 5) SYMBOL RFLAT NO_ _ Off-Leakage Current (Notes 6, 10) INO_ _(OFF) COM_ Off-Leakage Current (Notes 6, 10) ICOM_(OFF) COM _ On-Leakage Current (Notes 6, 10) ICOM_(ON) CONDITIONS MIN ICOM_ = 4mA; VNO_ _ = 1V, 1.5V, 2V; V+ = 2.
PAGE 5
Serially Controlled, Clickless Audio/Video Switches (V+ = +2.7V to +5.25V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) PARAMETER SYMBOL CONDITIONS MIN TYP DIGITAL INPUTS (SCLK, DIN, CS, SCL, SDA, A0, A1) V+ = 5V Input Low Voltage VIL V+ = 3V Input High Voltage VIH Input Hysteresis VHYST Input Leakage Current ILEAK Input Capacitance MAX UNITS 0.8 V 0.6 V+ = 5V 3 V+ = 3V 2 Digital inputs = 0 or V+ -1 V 0.
PAGE 6
3-WIRE TIMING CHARACTERISTICS (Figure 5, V+ = +2.7V to +5.25V, fOP = 2.1MHz, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) PARAMETER SYMBOL Operating Frequency CONDITIONS MIN V+ = 2.7V to 5.25V V+ = 4.75V to 5.25V fOP TYP 0 MAX UNITS 2.
PAGE 7
Serially Controlled, Clickless Audio/Video Switches 250 TIME (ns) Q (pC) 0 -1 100 5.2 -2 50 10 35 60 85 0 1 TEMPERATURE (°C) 2 3 4 tOFF, V+ = +5V -40 5 -15 TOTAL HARMONIC DISTORTION PLUS NOISE vs. FREQUENCY 600Ω IN AND OUT SIGNAL = 1VRMS 35 60 85 VIDEO FREQUENCY RESPONSE AUDIO FREQUENCY RESPONSE 0 MAX4562 toc07 1 10 TEMPERATURE (°C) VCOM_ (V) 0 MAX4526 toc08 -15 tOFF, V+ = +3V 0 -3 -40 tON, V+ = +5V 150 5.3 5.1 tON, V+ = +3V 200 1 5.4 MAX4562/3toc06 2 5.
PAGE 8
Typical Operating Characteristics (continued) (V+ = +5V, TA = +25°C, unless otherwise noted.
PAGE 9
Serially Controlled, Clickless Audio/Video Switches V+ 2/3 RL RL 50Ω COM2 NO2A GND N.C. 2/3 DECODER/ CONTROLLER SIGNAL GENERATOR 0dBm NO_ _ NO1 B COM1 ANALYZER DECODER/ CONTROLLER SIGNAL GENERATOR 0dBm V+ 10nF COM_V+ ANALYZER MAX4562/MAX4563 MAX4562 MAX4563 V+ 10nF GND a) OFF-ISOLATION b) CROSSTALK Figure 1. Off-Isolation and Crosstalk ACKNOWLEDGE BIT 3V MAX4562 MAX4563 0 V+ VOUT 10nF 2-WIRE 0 V+ VNO_ _ 2 OR 3 µP tR < 20ns tF < 20ns 50% SCL NO_ _ -0.
PAGE 10
MAX4562/MAX4563 Serially Controlled, Clickless Audio/Video Switches Detailed Description The MAX4562/MAX4563 are serial-interface controlled switches with soft-mode “clickless” and hard-mode operating capability. The MAX4562/MAX4563 contain two SPST switches and two SPDT switches. The SPDT switches are actually 2-to-1 multiplexers, in that each SPDT is really two independent SPST switches with a common node, as shown in the Pin Configuration.
PAGE 11
Serially Controlled, Clickless Audio/Video Switches C1 C0 COMMAND 0 0 NO_OP No Operation 0 1 NO_OP No Operation 1 0 SWITCHSET 1 1 MODESET Table 2. Control-Bit Mapping CONTROL BIT SWITCH SWITCH TERMINAL D5 SW1A 2, 3 D4 SW1B 3, 4 D3 SW2A 6, 7 D2 SW2B 7, 8 D1 SW3 9, 10 D0 (LSB) SW4 11, 12 Applications Information Switch Control The MAX4562/MAX4563 have a common commandand control-bit structure; the only difference is the interface type (2-wire or 3-wire).
PAGE 12
MAX4562/MAX4563 Serially Controlled, Clickless Audio/Video Switches Table 3. MAX4562 2-Wire Serial-Interface Data Format ADDRESS BYTE MSB SRT 1 0 COMMAND BYTE LSB 0 1 1 A1 A0 MSB 0 ACK C1 LSB C0 SW2A SW1B SW2A SW2B SW3 SW4 ACK STP STP = Stop Condition Logic “0” in any data bit location places the associated switch open or in hard switching mode. Logic “1” in any data bit location places the associated switch closed or in soft (clickless) switching mode.
PAGE 13
Serially Controlled, Clickless Audio/Video Switches 20% 70% tCSW tCSH SCLK 20% tDH 20% tCSO tCH tCL tCSS MAX4562/MAX4563 20% CS 20% 20% 70% 70% 70% 20% tDS D6 D7 DIN D1 D0 tDO DOUT Figure 5. 3-Wire Serial-Interface Timing Diagram SWITCHES UPDATED CS -20 SCLK -40 OFF-ISOLATION (dB) DATA CLOCKED IN DIN D7 D6 D5 D4 D3 D2 D1 D0 LSB MSB SPST SWITCH -60 -80 T-SWITCH -100 INPUT DATA BITS DATA CLOCKED OUT -120 DOUT 0.
PAGE 14
MAX4562/MAX4563 Serially Controlled, Clickless Audio/Video Switches QSOP.
PAGE 15
Serially Controlled, Clickless Audio/Video Switches ______________________________________________________________________________________ MAX4562/MAX4563 NOTES 15
PAGE 16
MAX4562/MAX4563 Serially Controlled, Clickless Audio/Video Switches 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.