ISL54209EVAL1Z_技术文档

MP3/USB 2.0 High Speed Switch with Negative

Signal Handling and Low Power Shutdown

ISL54209

Features

• High Speed (480Mbps) and Full Speed (12Mbps)

Signaling Capability per USB 2.0

The Intersil ISL54209 dual SPDT (Single Pole/Double

Throw) switch combines low distortion audio and

accurate USB 2.0 high speed data (480Mbps) signal

switching in the same low voltage device. When

operated with a 2.5V to 5.0V single supply, this analog

switch allows audio signal swings below ground,

allowing for the use of a common USB and audio

headphone connector in Personal Media Players and

other portable battery powered devices.

• Low Distortion Negative Signal Capability

• Low Power Shutdown State

• Low Distortion Headphone Audio Signals

- THD+N at 1mW into 32Ω Load. . . . . . .<0.013%

• Crosstalk (100kHz). . . . . . . . . . . . . . . . . . -95dB

• OFF-Isolation (100kHz). . . . . . . . . . . . . . . 95dB

The ISL54209 logic control pins are 1.8V compatible,

which allows for control via a standard µcontroller.

• Single Supply Operation (V ) . . . . . 2.5V to 5.0V

DD

• -3dB Bandwidth USB Switch . . . . . . . . . . 736MHz

• Available in µTQFN and TDFN Packages

The ISL54209 has an audio enable control pin to open all

switches and put the part in a low power state. In this

state, the device draws typically 1nA of current.

• COM Pins Over-voltage Tolerant to 5.5V

• Compliant with USB 2.0 Short Circuit Requirements

Without Additional External Components

The ISL54209 is available in a small 10 Ld 1.8mm x

1.4mm or 2.1mmx 1.6mm ultra-thin µTQFN packages

and a 10 Ld 3mmx3mm TDFN package. It operates over

a temperature range of -40°C to +85°C.

• Pb-Free (RoHS Compliant)

Applications*(see page 16)

• MP3 and other Personal Media Players

• Cellular/Mobile Phones

• PDAs

Related Literature

• Technical Brief TB363 “Guidelines for Handling and

Processing Moisture Sensitive Surface Mount Devices

(SMDs)”

• Audio/USB Switching

• Application Note AN1406 “ISL54209EVAL1Z

Evaluation Board User’s Manual”

Application Block Diagram

3.3V

VDD

ISL54209

IN

CTRL

µCONTROLLER

LOGIC CONTROL

V

BUS

4MΩ

D-

COM -

USB

HIGH-SPEED

D+

TRANSCEIVER

COM +

L

AUDIO

CODEC

R

50kΩ

GND

June 10, 2010

FN6627.4

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.

1

All other trademarks mentioned are the property of their respective owners.

ISL54209

Pin Configurations (Note 1)

ISL54209

(10 LD 2.1mmx1.6mm µTQFN)

TOP VIEW

ISL54209

(10 LD 3.0mmx3.0mm TDFN)

TOP VIEW

CTRL

10

PD

CTRL

D-

4M

Ω

10

9

VDD

IN

1

4MΩ

LOGIC

CONTROL

LOGIC

CONTROL

VDD

IN

9

D-

D+

L

2

1

2

3

4

4MΩ

D+

COM -

COM +

3

4

5

8

7

6

4M

Ω

COM -

7

6

L

50kΩ

50k

Ω

R

GND

R

COM +

50kΩ

5

GND

ISL54209

(10 LD 1.8mmx1.4mm µTQFN)

TOP VIEW

D+

7

L

6

D-

8

9

5

4

3

R

50kΩ

CTRL

GND

VDD 10

COM +

4MΩ

1

2

IN

COM -

NOTE:

1. ISL54209 Switches Shown for IN = Logic “0” and CTRL = Logic “1”.

Truth Table

ISL54209

IN

0

CTRL

L, R

OFF

ON

D+, D-

OFF

0

1

X

0

OFF

1

OFF

ON

IN, CTRL: Logic “0” when ≤ 0.5V or Floating, Logic “1” when

≥ 1.4V with 2.7V to 3.6V Supply.

FN6627.4

June 10, 2010

2

ISL54209

Pin Descriptions

µTQFN

TDFN

2.1mmx1.6mm

1.8mmx1.4mm

NAME

VDD

IN

FUNCTION

1

2

1

2

10

1

2

3

4

5

6

7

8

9

-

Power Supply

Digital Control Input

3

COM-

COM+

GND

R

Voice and Data Common Pin

Ground Connection

4

5

6

Audio Right Input

7

L

Audio Left Input

8

D+

USB Differential Input

9

D-

USB Differential Input

10

PD

10

-

CTRL

PD

Digital Control Input (Audio Enable)

Thermal Pad. Tie to Ground or Float

Ordering Information

PART

NUMBER

PART

MARKING

TEMP. RANGE

(°C)

PACKAGE

(Pb-Free)

PKG.

DWG. #

ISL54209IRUZ-T

(Notes 3, 4, 5)

GF

-40 to +85

10 Ld 2.1mmx1.6mm µTQFN

10 Ld 1.8mmx1.4mm µTQFN

10 Ld 3mmx3mm TDFN

L10.2.1x1.6A

ISL54209IRU1Z-T

(Notes 3, 4, 5)

U4

L10.1.8x1.4A

L10.3x3A

ISL54209IRTZ-T

(Notes 2, 4, 5)

4209

ISL54209IRTZ

(Notes 2, 5)

10 Ld 3mmx3mm TDFN

L10.3x3A

ISL54209EVAL1Z

NOTES:

ISL54209 Eval Kit

2. These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach

materials, and 100% matte tin plate plus anneal (e3 termination finish, which is RoHS compliant and compatible with both

SnPb and Pb-free soldering operations). Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that

meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.

3. These Intersil Pb-free plastic packaged products employ special Pb-free material sets; molding compounds/die attach

materials and NiPdAu plate - e4 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free

soldering operations. Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed

the Pb-free requirements of IPC/JEDEC J STD-020.

4. Please refer to TB347 for details on reel specifications.

5. For Moisture Sensitivity Level (MSL), please see device information page for ISL54209. For more information on MSL please

see techbrief TB363.

FN6627.4

June 10, 2010

3

ISL54209

Absolute Maximum Ratings

Thermal Information

V

to GND. . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 5.5V

Thermal Resistance (Typical)

10 Ld 2.1mmx1.6mm µTQFN (Notes 8, 10). .154

10 Ld 3mmx3mm TDFN (Notes 7, 9) . . 58

10 Ld 1.8mmx1.4mm µTQFN (Notes 8, 10). 160

Maximum Junction Temperature (Plastic Package). . +150°C

Maximum Storage Temperature Range. . . . . -65°C to +150°C

Pb-Free Reflow Profile . . . . . . . . . . . . . . . . . .see link below

http://www.intersil.com/pbfree/Pb-FreeReflow.asp

θ

(°C/W)

θ

(°C/W)

DD

JA

JC

100

18

105

Input Voltages

D+, D- (Note 6) . . . . . . . . . . . . . . . . . . . . . - 2V to 5.5V

L, R (Note 6). . . . . . . . . . . . . . . . - 2V to ((V ) + 0.3V)

DD

IN, CTRL (Note 6) . . . . . . . . . . . -0.3V to ((V ) + 0.3V)

DD

Output Voltages

COM-, COM+ (Note 6) . . . . . . . . . . . . . . . . . -2V to 5.5V

Continuous Current (Audio Switches) . . . . . . . . . . ±150mA

Peak Current (Audio Switches)

(Pulsed 1ms, 10% Duty Cycle, Max) . . . . . . . . . ±300mA

Continuous Current (USB Switches) . . . . . . . . . . . . ±40mA

Peak Current (USB Switches)

(Pulsed 1ms, 10% Duty Cycle, Max) . . . . . . . . . ±100mA

ESD Ratings

Operating Conditions

Temperature Range. . . . . . . . . . . . . . . . . . -40°C to +85°C

Audio Signal Range . . . . . . . . . . . . . . . . . . . . -1.5V to 1.5V

USB Signal Range . . . . . . . . . . . . . . . . . . . . . . . 0V to V

DD

Human Body Model, I/0 to GND . . . . . . . . . . . . . . . >4kV

Human Body Model, All Other Pins. . . . . . . . . . . . .>3.5kV

Human Body Model, V

to GND. . . . . . . . . . . . . . >11kV

DD

Machine Model . . . . . . . . . . . . . . . . . . . . . . . . . . >250V

Charged Device Model . . . . . . . . . . . . . . . . . . . . . . >2kV

Latch-up Tested per JEDEC: ClassII Level A > . . . . @ +85°C

CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact

product reliability and result in failures not covered by warranty.

NOTES:

6. Signals on D+, D-, L, R, COM-, COM+, CTRL and IN exceeding V

maximum current ratings.

or GND by specified amount are clamped. Limit current to

DD

7. θ is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach”

JA

features. See Tech Brief TB379.

8. θ_JAis measured with the component mounted on a high effective thermal conductivity test board in free air. See Tech Brief

TB379 for details.

9. For θ , the “case temp” location is the center of the exposed metal pad on the package underside.

JC

10. For θ , the “case temp” location is taken at the package top center.

JC

Electrical Specifications - 2.7V to 3.6V Supply Test Conditions: V

= +3.0V, GND = 0V, V

= V = 1.4V,

CTRLH

DD

INH

V

= V = 0.5V, (Note 11), Unless Otherwise Specified. Boldface limits apply over the operating temperature range,

INL

CTRLL

-40°C to +85°C.

TEMP

MIN

MAX

PARAMETER

TEST CONDITIONS

(°C) (Notes 12, 13) TYP (Notes 12, 13) UNITS

ANALOG SWITCH CHARACTERISTICS

Audio Switches (L, R)

Analog Signal Range,

V

= 3.3V, IN = 0.5V, CTRL = 1.4V

Full

-1.5

-

1.5

V

DD

V

ANALOG

ON-Resistance, r

V

= 3.0V, IN = 0.5V, CTRL = 1.4V,

= 40mA, V or V = -0.85V to 0.85V

L R

+25

Full

-

2.5

-

2.8

Ω

ON

DD

I

COMx

-

3.4

(Figure 3, Note 15)

r

Matching Between

V

= 3.0V, IN = 0.5V, CTRL = 1.4V, I

COMx

+25

Full

-

0.09

-

0.25

Ω

ON

Channels, Δr

DD

= 40mA, V or V = Voltage at max r over

ON

L

R

-

0.26

signal range of -0.85V to 0.85V (Notes 15,

16)

r

Flatness, r

V

= 3.0V, IN = 0.5V, CTRL = 1.4V,

+25

Full

-

0.02

-

0.05

Ω

ON

FLAT(ON)

DD

I

= 40mA, V or V = -0.85V to 0.85V

COMx

L R

-

0.07

(Notes 14, 15)

ON-Resistance, r

ON

V

= 5.0V, IN = 0V, CTRL = V , I

DD COMx

=

25

-

2.3

-

Ω

DD

40mA, V or V = -0.85V to 0.85V (Figure 3)

L

R

FN6627.4

June 10, 2010

4

ISL54209

Electrical Specifications - 2.7V to 3.6V Supply Test Conditions: V

= +3.0V, GND = 0V, V

= V = 1.4V,

CTRLH

DD

INH

V

= V = 0.5V, (Note 11), Unless Otherwise Specified. Boldface limits apply over the operating temperature range,

INL

CTRLL

-40°C to +85°C. (Continued)

TEMP

MIN

MAX

PARAMETER

TEST CONDITIONS

= 4.2V, IN = 0V, CTRL = V

(°C) (Notes 12, 13) TYP (Notes 12, 13) UNITS

ON-Resistance, r

V

I

,

25

-

2.35

-

Ω

ON

DD

= 40mA, V or V = -0.85V to 0.85V

COMx

(Figure 3)

L

R

V

= 2.85V, IN = 0V, CTRL = V , I

DD COMx

=

25

-

2.72

50

-

Ω

ON

DD

40mA, V or V = -0.85V to 0.85V (Figure 3)

L

R

Discharge Pull-Down

Resistance, R , R

V

= 3.6V, IN = 0V, CTRL = 1.4V, V

COM-

or +25

kΩ

DD

= -0.85V, 0.85V, V or V = -0.85V,

L

R

COM+

L

R

0.85V, V

and V = floating; measure

D+

D-

current through the discharge pull-down

resistor and calculate resistance value.

USB Switches (D+, D-)

Analog Signal Range,

V

= 2.7V to 3.6V, IN = 1.4V, CTRL = 1.4V Full

0

-

V

DD

V

ANALOG

ON-Resistance, r

(High-Speed)

= 3.3V, IN = 1.4V, CTRL = 1.4V,

25

-

5

-

6.5

Ω

ON

DD

I

= 40mA, V

or V = 0V to 400mV

COMx

D+ D-

Full

-

7

(Figure 4, Note 15)

r

Matching Between

V

= 3.3V, IN = 1.4V, CTRL = 1.4V, I

COMx

25

-

0.05

-

0.25

Ω

ON

Channels, Δr

DD

= 40mA, V

or V = Voltage at max r

ON

(High-Speed)

D+

(Notes 15, 16)

D- ON

Full

-

0.55

r

Flatness, r

V

= 3.3V, IN = 1.4V, CTRL = 1.4V,

25

-

0.45

-

0.55

Ω

ON

(High-Speed)

FLAT(ON)

DD

I

= 40mA, V

or V = 0V to 400mV

COMx

D+

D-

Full

-

1.0

(Notes 14, 15)

ON-Resistance, r

(Full-Speed)

V

= 3.3V, IN = 1.4V, CTRL = 1.4V,

25

-

25

-

30

Ω

ON

DD

I

= 1mA, V

or V = 3.3V (Figure 4,

COMx

D+ D-

Full

-

35

Note 15)

ON-Resistance, r

V

= 5.0V, IN = V , CTRL = V , I

DD DD COMx

=

+25

25

-

20

22

28

-

Ω

ON

DD

1mA, V

or V = 5V (Figure 4)

D+

D-

V

= 4.2V, IN = V , CTRL = V , I

DD DD COMx

DD

1mA, V

or V = 4.2V (Figure 4)

D+

D-

V

= 2.85V, IN = V , CTRL = V , I

DD DD COMx

25

DD

= 1mA, V

or V = 2.85V (Figure 4)

D+

D-

OFF-Leakage Current,

or I

V

= 3.6V, IN = 0V, CTRL = 3.6V, V

COM-

or

25

-5

0.5

-

5

nA

DD

I

= 0.5V, 0V, V

or V = 0V, 0.5V,

D+(OFF)

D-(OFF)

COM+

D+

D-

Full

-60

60

V and V = float

L

R

ON-Leakage Current, I

V

= 3.6V, IN = V , CTRL = 0V or V

,

25

-10

2

-

10

nA

DX DD

DD DD

V

or V = 2.7V, V

or V = Float,

D+

D- COM-

COM+

Full

-70

70

V and V = float

L

R

DYNAMIC CHARACTERISTICS

USB Turn-ON Time, t = 3.0V, R = 50Ω, C = 10pF (Figure 1) 25

V

-

52

20

-

ns

µs

ns

ON

USB Turn-OFF Time, t

DD

L

V

= 3.0V, R = 50Ω, C = 10pF (Figure 1) 25

L L

OFF DD

Audio Turn-ON Time, t

V

= 3.0V, R = 50Ω, C = 10pF (Figure 1) 25

2.5

50

ON DD

L

Audio Turn-OFF Time,

V

= 3.0V, R = 50Ω, C = 10pF (Figure 1) 25

L L

DD

t

OFF

Break-Before-Make Time V

Delay, t

= 3.0V, R = 50Ω, C = 10pF (Figure 2) 25

-

44

-

ns

DD

L

D

FN6627.4

June 10, 2010

5

ISL54209

Electrical Specifications - 2.7V to 3.6V Supply Test Conditions: V

= +3.0V, GND = 0V, V

= V = 1.4V,

CTRLH

DD

INH

V

= V = 0.5V, (Note 11), Unless Otherwise Specified. Boldface limits apply over the operating temperature range,

INL

CTRLL

-40°C to +85°C. (Continued)

TEMP

MIN

MAX

PARAMETER

TEST CONDITIONS

= 3.0V, IN = 3V, CTRL = 3V, R = 45Ω,

(°C) (Notes 12, 13) TYP (Notes 12, 13) UNITS

Skew, t

V

25

-

50

-

ps

SKEW

DD

L

C = 10pF, t = t = 720ps at 480Mbps,

R

F

(Duty Cycle = 50%) (Figure 7)

Total Jitter, t

V

=3.0V, IN = 3V, CTRL = 3V, R = 50Ω,

25

-

210

250

-

ps

dB

J

DD

L

C = 10pF, t = t = 750ps at 480Mbps

R

F

Propagation Delay, t

V

= 3.0V, IN = 3V, CTRL = 3V, R = 45Ω,

DD L

PD

C = 10pF (Figure 7)

L

Audio Crosstalk

R to COM-, L to COM+

V

= 3.0V, IN = 0V, CTRL = 3.0V,

-110

DD

R = 32Ω, f = 20Hz to 20kHz, V or

L

R

V = 0.707V

(2V ) (Figure 6)

RMS

P-P

Crosstalk

(Audio to USB, USB to

Audio)

V

= 3.0V, R = 50Ω, f = 100kHz

25

-

-95

-

dB

DD

(Figure 6)

L

OFF-Isolation

V

= 3.0V, R = 50Ω, f = 100kHz

25

-

95

-

dB

%

DD

L

= 3.0V, R = 32Ω, f = 20Hz to 20kHz

114

L

Total Harmonic Distortion f = 20Hz to 20kHz, V

DD

= 3.0V, IN = 0V,

0.013

CTRL = 3.0V, V or V = 180mV

(509mV ), R = 32Ω

L

R

RMS

P-P

L

Total Harmonic Distortion f = 20Hz to 20kHz, V

DD

= 3.0V, IN = 0V,

25

-

0.06

-

%

CTRL = 3.0V, V or V = 0.707V

(2V ),

L

R

RMS

P-P

R = 32Ω

L

USB Switch -3dB

Bandwidth

Signal = 0dBm, 0.2V

= 5pF

offset, R = 50Ω, C

L

25

-

736

3

-

MHz

pF

DC

L

D+/D- OFF-Capacitance, f = 1MHz, V

= 3.0V, IN = 0V, CTRL = 3.0V,

= 0V (Figure 5)

DD

= V

C

V

or V

DxOFF

L/R OFF-Capacitance,

, C

D-

D+

COMx

f = 1MHz, V

= 3.0V, IN = 3.0V, CTRL = 0V

5

pF

DD

C

or 3V, V or V = V

= 0V (Figure 5)

LOFF ROFF

L

R

COMx

COM ON-Capacitance,

f = 1MHz, V

= 3.0V, IN = 3.0V, CTRL = 0V

8

pF

DD

C

or 3V, V or V

= V = 0V (Figure 5)

COMx

COMx(ON)

D- D+

POWER SUPPLY CHARACTERISTICS

Power Supply Range,

Full

2.5

5.0

V

DD

Positive Supply Current, V

= 3.6V, IN = 0V or 3.6V, CTRL = 3.6V

= 3.6V, IN = 0V, CTRL = 0V or float

25

Full

25

-

7

-

13

15

10

150

-

µA

nA

µA

DD

I

DD

Positive Supply Current, V

(Low Power State)

1

-

I

DD

Full

25

Power OFF-Current, I

V

= 0V, V = V

Dx

= 5.25V, IN = CTRL

COMx

7

Dx

I

= Float

COMx

DIGITAL INPUT CHARACTERISTICS

Voltage Low, V

,

V

= 2.7V to 3.6V

Full

-

0.5

-

V

INL

DD

V

CTRLL

Voltage High, V

,

= 2.7V to 3.6V

1.4

INH

V

CTRLH

FN6627.4

June 10, 2010

6

ISL54209

Electrical Specifications - 2.7V to 3.6V Supply Test Conditions: V

= +3.0V, GND = 0V, V

= V = 1.4V,

CTRLH

DD

INH

V

= V = 0.5V, (Note 11), Unless Otherwise Specified. Boldface limits apply over the operating temperature range,

INL

CTRLL

-40°C to +85°C. (Continued)

TEMP

MIN

MAX

PARAMETER

TEST CONDITIONS

(°C) (Notes 12, 13) TYP (Notes 12, 13) UNITS

Input Current, I

,

V

= 3.6V, IN = 0V, CTRL = 0V

Full

-50

20

50

nA

INL

DD

I

CTRLL

Input Current, I

V

= 3.6V, IN = 3.6, CTRL = 0V

= 3.6V, IN = 0V, CTRL = 3.6V

Full

-2

-

0.9

4

2

-

µA

INH

DD

CTRLH

CTRL Pull-Down Resistor, V

= 3.6V, IN = 0V, CTRL = 3.6V; measure Full

MΩ

R

current through the internal pull-down

resistor and calculate resistance value.

CTRL

IN Pull-Down Resistor,

V

= 3.6V, IN = 3.6V, CTRL = 3.6V;

Full

-

4

-

MΩ

DD

R

measure current through the internal

pull-down resistor and calculate resistance

value.

IN

NOTES:

11. V

= Input voltage to perform proper function.

LOGIC

12. The algebraic convention, whereby the most negative value is a minimum and the most positive a maximum, is used in this

data sheet.

13. Parameters with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise specified. Temperature limits established

by characterization and are not production tested.

14. Flatness is defined as the difference between maximum and minimum value of ON-resistance over the specified analog signal

range.

15. Limits established by characterization and are not production tested.

16. r

matching between channels is calculated by subtracting the channel with the highest max r

value from the channel

ON

with lowest max r

value, between L and R or between D+ and D-.

ON

FN6627.4

June 10, 2010

7

ISL54209

Test Circuits and Waveforms

C

V

DD

V

t < 20ns

r

t < 20ns

f

INH

LOGIC

INPUT

50%

V

CTRL

INL

V

INPUT

V

t

OUT

OFF

AUDIO OR USB

SWITCH

INPUT

COMx

SWITCH

INPUT

V

IN

INPUT

0V

V

OUT

90%

C

L

10pF

R

50Ω

V

L

GND

IN

SWITCH

OUTPUT

t

ON

Logic input waveform is inverted for switches that have the

opposite logic sense.

Repeat test for all switches. C includes fixture and stray

L

capacitance.

R

L

-----------------------

L

V

= V

OUT

(INPUT)

R

+ r

ON

FIGURE 1A. MEASUREMENT POINTS

FIGURE 1B. TEST CIRCUIT

FIGURE 1. SWITCHING TIMES

V

DD

C

V

INH

LOGIC

INPUT

CTRL

D- OR D+

V

INL

V

OUT

INPUT

COMx

L OR R

IN

C

10pF

R

50Ω

L

V

OUT

90%

SWITCH

OUTPUT

GND

V

0V

IN

t

D

Repeat test for all switches. C includes fixture and stray

L

capacitance.

FIGURE 2A. MEASUREMENT POINTS

FIGURE 2B. TEST CIRCUIT

FIGURE 2. BREAK-BEFORE-MAKE TIME

V

DD

C

r = V /40mA

ON 1

r

= V /40mA

1

ON

CTRL

D- OR D+

CTRL

L OR R

V

OR V

R

L

V

OR V

D+

D-

0V OR FLOAT

V

IN

DD

IN

V

1

40mA

COMx

GND

Repeat test for all switches.

FIGURE 4. USB r

Repeat test for all switches.

FIGURE 3. AUDIO r

TEST CIRCUIT

ON

FN6627.4

June 10, 2010

8

ISL54209

Test Circuits and Waveforms(Continued)

V

DD

C

CTRL

L OR R

AUDIO OR USB

SIGNAL

GENERATOR

32Ω

COMx

IN

IMPEDANCE

ANALYZER

0V OR V

DD

0V

COMx

GND

R OR L

COMx

ANALYZER

NC

GND

R

L

Repeat test for all switches.

Signal direction through switch is reversed, worst case values

are recorded. Repeat test for all switches.

FIGURE 6. AUDIO CROSSTALK TEST CIRCUIT

FIGURE 5. CAPACITANCE TEST CIRCUIT

V

DD

C

t

ri

CTRL

IN

90%

50%

V

DD

10%

90%

DIN+

DIN-

OUT+

t

15.8Ω

D+

D-

skew_i

COM+

COM-

DIN+

DIN-

45Ω

143Ω

C

50%

10%

L

15.8Ω

OUT-

t

fi

45Ω

C

143Ω

L

t

ro

90%

GND

10%

90%

50%

10%

OUT+

OUT-

|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_0| Change in Skew through the Switch for Output Signals.

|tskew_i| Change in Skew through the Switch for Input Signals.

FIGURE 7B. TEST CIRCUIT

t

skew_o

t

f0

FIGURE 7A. MEASUREMENT POINTS

FIGURE 7. SKEW TEST

FN6627.4

June 10, 2010

9

ISL54209

Typical Application Block Diagrams

3.3V

VDD

ISL54209

IN

CTRL

4MΩ

µCONTROLLER

LOGIC CONTROL

V

BUS

4MΩ

D-

COM -

USB

HIGH-SPEED

TRANSCEIVER

D+

COM +

L

AUDIO

CODEC

R

50kΩ

GND

FIGURE 8. LOGIC CONTROL VIA MICRO-PROCESSOR

3.3V

VDD

ISL54209

IN

CTRL

4MΩ

µCONTROLLER

LOGIC CONTROL

V

BUS

4MΩ

500kΩ

D-

COM -

USB

HIGH-SPEED

TRANSCEIVER

D+

COM +

L

AUDIO

CODEC

R

50kΩ

GND

FIGURE 9. LOGIC CONTROL VIA V

VOLTAGE FROM COMPUTER OR USB HUB

BUS

FN6627.4

June 10, 2010

10

ISL54209

The audio switches are active (turned ON) whenever the

IN voltage is ≤ 0.5V or floating and the CTRL voltage ≥ to

1.4V.

Detailed Description

The ISL54209 device is a dual single pole/double throw

(SPDT) analog switch that operates from a single DC

power supply in the range of 2.5V to 5.0V. It was

designed to function as a dual 2 to 1 multiplexer to select

between USB differential data signals and audio L and R

stereo signals. It comes in tiny µTQFN and TDFN

packages for use in MP3 players, PDAs, cellular phones

and other personal media players.

USB Switches

The two USB switches (D+, D-) are bidirectional switches

that can pass rail-to-rail signals. When powered with a

3.3V supply, these switches have a nominal r

over the signal range of 0V to 400mV with a r

of 5Ω

flatness

ON

of 0.45Ω. The r

ON

matching between the D+ and D-

switches over this signal range is only 0.05Ω ensuring

The part consists of two 2.5Ω audio switches and two 5Ω

USB switches. The audio switches can accept signals that

swing below ground. They were designed to pass audio

left and right stereo signals, that are ground referenced,

with minimal distortion. The USB switches were designed

to pass high-speed USB differential data signals with

minimal edge and phase distortion.

minimal impact by the switches to USB high speed signal

transitions. As the signal level increases, the r

resistance increases. At a signal level of 3.3V, the switch

ON

resistance is nominally 25Ω.

The USB switches were specifically designed to pass USB

2.0 high-speed (480Mbps) differential signals typically in

the range of 0V to 400mV. They have low capacitance

and high bandwidth to pass the USB high-speed signals

with minimum edge and phase distortion to meet USB

2.0 high speed signal quality specifications. See

Figure 12.

The ISL54209 was specifically designed for MP3 players,

personal media players and cellular phone applications

that need to combine the audio headphone jack and the

USB data connector into a single shared connector,

thereby saving space and component cost. “Typical

Application Block Diagrams” on page 10 of this

functionality are shown in Figures 8 and 9.

The USB switches can also pass USB full-speed signals

(12Mbps) with minimal distortion and meet all the USB

requirements for USB 2.0 full-speed signaling. See

Figure 13 for Full-speed Eye Pattern taken with switch in

the signal path.

The ISL54209 has a single logic control pin (IN) that

selects between the audio switches and the USB

switches. This pin can be driven Low or High to switch

between the audio CODEC drivers and USB transceiver of

the MP3 player or cellular phone. The ISL54209 also

contains a logic control pin (CTRL) that when driven Low

while IN is Low, opens all switches and puts the part into

The USB switches are active (turned ON) whenever the

IN voltage is ≥ to 1.4V.

COM+, COM-, 1D-, 1D+, 2D-, AND 2D+ ARE

OVERVOLTAGE TOLERANT UP TO 5.5V AND

DOWN TO -1.5V

a low power state, drawing typically 1nA of I

current.

DD

Detailed descriptions of the two types of switches are

provided in the following sections.

For normal operation, the signal range for the USB

switches is from -1V to V . During normal operation,

the signal voltage at D- and D+ should not be allowed

DD

Audio Switches

The two audio switches (L, R) are 2.5Ω switches that can

pass signals that swing below ground by as much as

1.5V. They were designed to pass ground reference

stereo signals with minimal insertion loss and very low

distortion over a ±1V signal range.

to exceed the V

voltage rail or go below ground by

DD

more than -1.0V. However, the ISL54209, with a VDD

supply voltage in the range of 0V to 5.0V, can

withstand an overvoltage of up to 5.5V or down to

-1.5V applied at its COM pins (COM-, COM+) and/or

USB signal pins (1D-, 1D+, 2D-, 2D+) without

damage. In this overvoltage condition, the part draws

<1mA of current and causes no stress to the IC.

Note: When in the overvoltage state, the fault voltage

at a COM pin will pass thru the USB switch to the signal

side of the switch, so the media player’s USB

transceiver must have protection circuitry to protect it

from damage.

Crosstalk between the audio channels is -110dB over the

audio band. Crosstalk between the audio channel and

USB channel is -95dB at 100kHz. These switches have

excellent OFF-isolation, 114dB, over the audio band with

a 32Ω load.

Over a signal range of ±1V (0.707V

VDD > 2.7V, these switches have an extremely low r

) with

RMS

ON

resistance variation. They can pass ground referenced

audio signals with very low distortion (<0.06% THD+N)

when delivering 15.6mW into a 32Ω headphone speaker

load. See Figures 10 and 11.

ISL54209 Operation

The following will discuss using the ISL54209 in the

“Typical Application Block Diagrams” on page 10 shown

in Figures 8 and 9.

These switches are bi-directional switches. In typical

applications, the audio drivers would be connected at the

L and R side of the switch and the speaker loads would

be connected at the COM side of the switch.

VDD SUPPLY

The DC power supply connected at VDD pin provides the

required bias voltage for proper switch operation. The

FN6627.4

June 10, 2010

11

ISL54209

part can operate with a supply voltage in the range of

2.5V to 5.0V.

and will drive the IN pin low and put the part back into

the Audio or Low Power Mode.

In a typical USB/Audio application for portable battery

Low Power Mode

powered devices, the V

battery or an LDO and be in the range of 2.7V to 3.6V.

For best possible USB full-speed operation (12Mbps), it is

recommended that the V

get a USB data signal level above 2.5V.

voltage will come from a

DD

If the IN pin = Logic “0” and CTRL pin = Logic “0”, the

part will be in the Low Power mode. In the Low Power

mode, the audio switches and the USB switches are OFF.

In this state, the device draws typically 1nA of current.

voltage be ≥ 2.5V in order to

DD

In Low Power mode, the OFF-isolation and crosstalk

between switch cells is minimal for negative swinging

signals. Care should be taken to avoid negative swinging

signals in this mode of operation. In typical applications,

the Low Power state will be applied to the ISL54209 part

when the portable media player is in its sleep or

LOGIC CONTROL

The state of the ISL54209 device is determined by the

voltage at the IN pin and the CTRL pin. These logic pins

are 1.8V logic compatible when V

2.7V to 3.6V and can be controlled by a standard

microprocessor. The part has three states or modes of

operation. The Audio Mode, USB Mode and the Low

Power Mode. Refer to the “Truth Table” on page 2.

is in the range of

DD

hibernate mode to conserve battery power. In the sleep

mode, no audio or USB signals are applied to the part.

USING THE COMPUTER V

THE “IN” PIN

VOLTAGE TO DRIVE

BUS

The IN and CTRL pins are internally pulled low through a

4MΩ resistor to ground and can be left floating or

tri-stated by the microprocessor. The CTRL control pin is

only active when IN is logic “0”.

Rather than using a microprocessor to control the IN

logic pin, one can directly drive the IN pin using the 5V

V

voltage from the computer or USB hub. See

BUS

Figure 9 “Typical Application Block Diagrams” on

page 10.

Logic control voltage levels:

IN = Logic “0” (Low) when V ≤ 0.5V or Floating.

IN

IN = Logic “1” (High) when V ≥ 1.4V

When a headphone or nothing is connected at the

common connector, the internal 4MΩ pull-down will pull

the IN pin low, putting the ISL54209 in the Audio or Low

Power mode, depending on the condition of the CTRL pin.

IN

CTRL = Logic “0” (Low) when ≤ 0.5V or Floating.

CTRL = Logic “1” (High) when ≥ 1.4V

Audio Mode

When a USB cable is connected at the common

connector, the voltage at the IN pin will be driven to 5V

and the part will automatically go into the USB mode.

If the IN pin = Logic “0” and CTRL pin = Logic “1”, the

part will be in the Audio mode. In Audio mode, the L

(left) and R (right) 2.5Ω audio switches are ON and the

D- and D+ 5Ω switches are OFF (high impedance).

When the USB cable is disconnected from the common

connector, the voltage at the IN pin will be pulled low by

the pull-down resistor and return to the Audio or Low

Power mode, depending on the condition of the CTRL pin.

When nothing is plugged into the common connector or a

headphone is plugged into the common connector, the

µprocessor will sense that there is no voltage at the V

BUS

pin of the connector and will drive and hold the IN control

pin of the ISL54209 low. As long as CTRL = Logic “1,” the

ISL54209 part will be in the audio mode and the audio

drivers of the media player can drive the headphones

and play music.

Note: The ISL54209 contains an internal diode between

the IN pin and VDD pin. Whenever the IN voltage is

greater than the V

will flow through this diode into the V

DD

bus. An external series resistor in the range of 100kΩ to

500kΩ is required at the IN logic pin to limit the current

voltage by more than 0.7V, current

power supply

DD

USB Mode

when driving it with the V

voltage. This allows the

voltage from a computer or USB hub (4.4V to

BUS

If the IN pin = Logic “1” and the CTRL pin = Logic “0” or

Logic “1”, the part will go into USB mode. In USB mode,

the D- and D+ 5Ω switches are ON and the L and R 2.5Ω

audio switches are OFF (high impedance).

V

BUS

5.25V) to drive the IN pin while the V

voltage is in the

DD

range of 2.5V to 3.6V. A 500kΩ resistor will limit the

current to 2.76µA and still allow the IN logic voltage to go

to around 3.67V, which is will above the required V H

level of 1.4V. A smaller series resistor can be used but

more current will flow.

When a USB cable from a computer or USB hub is

connected at the common connector, the µprocessor will

IN

sense the presence of the 5V V

and drive the IN pin

BUS

voltage high. The ISL54209 part will go into the USB

mode. In USB mode, the computer or USB hub

transceiver and the MP3 player or cell phone USB

transceiver are connected and digital data will be able to

be transmitted back and forth.

When the USB cable is disconnected, the µprocessor will

sense that the 5V V

voltage is no longer connected

BUS

FN6627.4

June 10, 2010

12

ISL54209

Typical Performance Curves T = +25°C, Unless Otherwise Specified.

A

0.11

0.10

0.09

0.08

0.07

0.06

0.05

0.04

0.10

R

V

= 32Ω

= 0.707V

R

V

= 32Ω

LOAD

= 3V

DD

RMS

3V

P-P

0.08

2.5V

P-P

0.06

0.04

2V

P-P

V

= 2.6V

DD

V

= 3.6V

DD

1V

P-P

V

= 2.7V

V

= 3V

DD

0.02

20

200

2k

20k

20

200

2k

20k

FREQUENCY (Hz)

FIGURE 10. THD+N vs SUPPLY VOLTAGE vs

FREQUENCY

FIGURE 11. THD+N vs SIGNAL LEVELS vs FREQUENCY

TIME SCALE (0.2ns/DIV)

FIGURE 12. EYE PATTERN: 480Mbps WITH USB SWITCHES IN THE SIGNAL PATH

FN6627.4

June 10, 2010

13

ISL54209

Typical Performance Curves T = +25°C, Unless Otherwise Specified. (Continued)

A

V

= 3.3V

DD

TIME SCALE (10ns/DIV)

FIGURE 13. EYE PATTERN: 12Mbps USB SIGNAL WITH USB SWITCHES IN THE SIGNAL PATH

1

0

USB SWITCH

R

= 50Ω

L

V

= 0.2V

P-P

TO 2V

P-P

SIGNAL

-20

-40

-60

V

= 1.5V

DC

-1

-2

DCOFFSET

-3

-4

-80

-100

-120

R

= 50Ω

L

V

= 0.2V

TO 2V

P-P P-P

SIGNAL

1M

10M

100M

1G

0.001M

0.01M

0.1M

FREQUENCY (Hz)

1M

10M

100M 500M

FREQUENCY (Hz)

FIGURE 14. FREQUENCY RESPONSE

FIGURE 15. OFF-ISOLATION USB SWITCHES

FN6627.4

June 10, 2010

14

ISL54209

Typical Performance Curves T = +25°C, Unless Otherwise Specified. (Continued)

A

0

R

= 50Ω

L

V

= 0.2V TO 2V

SIGNAL

P-P P-P

-20

-40

Die Characteristics

SUBSTRATE AND TDFN THERMAL PAD

POTENTIAL (POWERED UP):

-60

GND

TRANSISTOR COUNT:

-80

-100

-120

98

PROCESS:

Submicron CMOS

0.001M 0.01M

0.1M

1M

10M

100M 500M

FREQUENCY (Hz)

FIGURE 16. OFF-ISOLATION AUDIO SWITCHES

FN6627.4

June 10, 2010

15

ISL54209

Revision History

The revision history provided is for informational purposes only and is believed to be accurate, but not warranted. Please go to

web to make sure you have the latest Rev.

DATE

REVISION

CHANGE

3/8/10

FN6627.4

Made correction to Tjc in Thermal information and corresponding notes as follows: 2.1x1.6

uTQFN package from “48.3” to “100” and 1.8x1.4 uTQFN package from “61.9” to “105”. Added

note that is "not direct attach" for both uTQFN packages.

Added Latchup to Abs Max Ratings.

Updated POD L10.2.1X1.6A to most recent rev. Changes were to convert to new format by

moving dimensions from table onto drawing (no dimension changes)

Updated POD L10.3X3A to most recent rev. Changes were to convert to new format by moving

dimensions from table onto drawing (no dimension changes)

11/24/09

FN6627.3

Added 10 Ld 1.8x1.4 µTQFN option

Added MSL note to Ordering Information

Added “Boldface limits apply...” to common conditions of Electrical Specifications table. Bolded

full temperature specs in spec table.

Added Revision History and Products section

Added L10.1.8x1.4A package outline drawing

Under thermal information for the 2.1 x 1.6 µTQFN & the 1.8 x 1.4 µTQFN, added new boiler

plate note for theta JC indicating measurement taken at center of top of package. Moved

Note 8 down to 3x3 TDFN.

7/1/08

4/3/08

FN6627.2

FN6627.1

Added eval part # to ordering info and updated ESD HBM rating.

Applied Intersil standards: Updated pb-free Note 2 to match format, updated over-temp note

-P2, added Note 3 to order info per Mark Kwoka's new verbiage based on lead finish. Update

cross refs accordingly

-P3, changed ESD and added apps info for the VBUS control

-P5, Note 10 revised to: "Parts are 100% tested at +25°C. Temperature limits established by

characterization and are not production tested." from "Parts are 100% tested at +25°C. Over-

temperature limits established by characterization and are not production tested."

12/20/07

FN6627.0

Initial Release

Products

Intersil Corporation is a leader in the design and manufacture of high-performance analog semiconductors. The

Company's products address some of the industry's fastest growing markets, such as, flat panel displays, cell phones,

handheld products, and notebooks. Intersil's product families address power management and analog signal

processing functions. Go to www.intersil.com/products for a complete list of Intersil product families.

*For a complete listing of Applications, Related Documentation and Related Parts, please see the respective device

information page on intersil.com: ISL54209

To report errors or suggestions for this datasheet, please go to www.intersil.com/askourstaff

FITs are available from our website at http://rel.intersil.com/reports/search.php

For additional products, see www.intersil.com/product_tree

Intersil products are manufactured, assembled and tested utilizing ISO9000 quality systems as noted

in the quality certifications found at www.intersil.com/design/quality

Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications

at any time without notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by

Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any

infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any

patent or patent rights of Intersil or its subsidiaries.

For information regarding Intersil Corporation and its products, see www.intersil.com

FN6627.4

June 10, 2010

16

ISL54209

Package Outline Drawing

L10.1.8x1.4A

10 LEAD ULTRA THIN QUAD FLAT NO-LEAD PLASTIC PACKAGE

Rev 5, 3/10

6

1.80

A

PIN #1 ID

9 X 0.40

10X 0.20

B

1

2

4

3

10

0.50

0.10 M C A B

0.05

6

PIN 1

INDEX AREA

C

M

0.70

8

4X 0.30

5

0.10

7

6

2X

6X 0.40

TOP VIEW

BOTTOM VIEW

SEE DETAIL "X"

0.10 C

C

MAX. 0.55

(9 X 0.60)

(10X 0.20)

SEATING PLANE

0.08

C

1

3

10

(0.70)

SIDE VIEW

(0.70)

8

0 .1 27 REF

(4X 0.30)

C

5

6

7

PACKAGE OUTLINE

(6X 0.40)

0-0.05

TYPICAL RECOMMENDED LAND PATTERN

DETAIL "X"

NOTES:

1. Dimensions are in millimeters.

Dimensions in ( ) for Reference Only.

2. Dimensioning and tolerancing conform to ASME Y14.5m-1994.

3.

Unless otherwise specified, tolerance : Decimal ± 0.05

4. Dimension applies to the metallized terminal and is measured

between 0.15mm and 0.30mm from the terminal tip.

JEDEC reference MO-255.

5.

6.

The configuration of the pin #1 identifier is optional, but must be

located within the zone indicated. The pin #1 identifier may be

either a mold or mark feature.

FN6627.4

June 10, 2010

17

ISL54209

Package Outline Drawing

L10.2.1x1.6A

10 LEAD ULTRA THIN QUAD FLAT NO-LEAD PLASTIC PACKAGE

Rev 5, 3/10

8.

PIN 1

INDEX AREA

2.10

A

PIN #1 ID

8.

0.05 MIN.

B

1

4

1

4X 0.20 MIN.

0.10 MIN.

10

5

0.80

10X 0.40

10 X 0.20

0.10

6

9

2X

6X 0.50

4

TOP VIEW

(10 X 0.20)

0.10 M C A B

M C

BOTTOM VIEW

SEE DETAIL "X"

(0.05 MIN)

(0.10 MIN.)

MAX. 0.55

PACKAGE

OUTLINE

1

0.10 C

C

(10X 0.60)

SEATING PLANE

0.08 C

(2.00)

SIDE VIEW

0 . 125 REF

(0.80)

(1.30)

C

(6X 0.50 )

(2.50)

0-0.05

TYPICAL RECOMMENDED LAND PATTERN

DETAIL "X"

NOTES:

1. Dimensioning and tolerancing conform to ASME Y14.5M-1994.

2. All Dimensions are in millimeters. Angles are in degrees.

Dimensions in ( ) for Reference Only.

3. Unless otherwise specified, tolerance : Decimal ± 0.05

4. Lead width dimension applies to the metallized terminal and is measured

between 0.15mm and 0.30mm from the terminal tip.

5. Maximum package warpage is 0.05mm.

6. Maximum allowable burrs is 0.076mm in all directions.

7. Same as JEDEC MO-255UABD except:

No lead-pull-back, MIN. Package thickness = 0.45 not 0.50mm

Lead Length dim. = 0.45mm max. not 0.42mm.

8. The configuration of the pin #1 identifier is optional, but must be located within

the zone indicated. The pin #1 identifier may be either a mold or mark feature.

FN6627.4

June 10, 2010

18

ISL54209

Package Outline Drawing

L10.3x3A

10 LEAD THIN DUAL FLAT NO-LEAD PLASTIC PACKAGE

Rev 5, 3/10

2.0 REF

8X 0.50 BSC

6

3.00

A

PIN 1

INDEX AREA

B

1

5

6

10X 0 . 30

PIN 1

INDEX AREA

3.00

1.50

0.15

(4X)

C

A B

0.10

0.05

M

10

5

10 X 0.25

4

TOP VIEW

( 2.30 )

2.30

BOTTOM VIEW

0 .80 MAX

SEE DETAIL "X"

0.10 C

C

(2.90)

SEATING PLANE

0.08 C

(1.50)

SIDE VIEW

(10 X 0.50)

5

0 . 2 REF

C

( 8X 0 .50 )

( 10X 0.25 )

0 . 00 MIN.

0 . 05 MAX.

TYPICAL RECOMMENDED LAND PATTERN

DETAIL "X"

NOTES:

1. Dimensions are in millimeters.

Dimensions in ( ) for Reference Only.

2. Dimensioning and tolerancing conform to ASME Y14.5m-1994.

3. Unless otherwise specified, tolerance : Decimal ± 0.05

Angular ±2.50°

4. Dimension applies to the metallized terminal and is measured

between 0.15mm and 0.30mm from the terminal tip.

Tiebar shown (if present) is a non-functional feature.

5.

6.

The configuration of the pin #1 identifier is optional, but must be

located within the zone indicated. The pin #1 identifier may be

either a mold or mark feature.

Compliant to JEDEC MO-229-WEED-3 except exposed pad length (2.30mm).

7.

FN6627.4

June 10, 2010

19


型号：	ISL54209EVAL1Z
厂家：	Intersil
描述：	MP3/USB 2.0 High Speed Switch with Negative Signal Handling and Low Power Shutdown MP3 / USB 2.0高速开关，可处理负信号处理和低功耗关断模式开关
文件：	总19页 (文件大小：871K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

ISL54209EVAL1Z [INTERSIL]

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ISL54209IRTZ

ISL54209IRTZ-T

ISL54209IRTZ-T

ISL54209IRU1Z-T

ISL54209IRU1Z-T

ISL54209IRUZ-T

ISL54210

ISL54210EVAL1Z

ISL54210IRTZ

ISL54210IRTZ-T

ISL54210IRUZ-T