ISL54206A [INTERSIL]
MP3/USB 2.0 High Speed Switch with Negative Signal Handling; MP3 / USB 2.0高速开关，可处理负信号处理
| 型号： | ISL54206A |
| 厂家： | 
Intersil |
| 描述： | MP3/USB 2.0 High Speed Switch with Negative Signal Handling |
| 文件： | 总17页 (文件大小：1369K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
ISL54206A
®
Data Sheet
June 25, 2007
FN6515.0
MP3/USB 2.0 High Speed Switch with
Negative Signal Handling
Features
• High Speed (480Mbps) and Full Speed (12Mbps)
Signaling Capability per USB 2.0
The Intersil ISL54206A dual SPDT (Single Pole/Double
Throw) switches combine low distortion audio and accurate
USB 2.0 high speed data (480Mbps) signal switching in the
same low voltage device. When operated with a 2.7V to 3.6V
single supply these analog switches allow audio signal
swings below-ground, allowing 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
• Control Pin to Open all Switches and Enter Low Power
State
• Low Distortion Headphone Audio Signals
- THD+N at 20mW into 32Ω Load . . . . . . . . . . . . . <0.1%
• Cross-talk Audio Channels (20Hz to 20kHz) . . . . . -110dB
The ISL54206A logic control pins are 1.8V compatible which
allows for control via a standard µcontroller. With a VDD
voltage in the range of 2.7V to 3.6V the IN pin voltage can
exceed the VDD rail allowing for the USB 5V VBUS voltage
from a computer to directly drive the IN pin to switch
between the audio and USB signal sources in the portable
device. The part has an audio enable control pin to open all
the switches and put the part in a low power state.
• Single Supply Operation (V ) . . . . . . . . . . . . 2.5V to 5.5V
DD
• -3dB Bandwidth USB Switches . . . . . . . . . . . . . . . 630MHz
• Available in µTQFN and TDFN Packages
• Pb-Free Plus Anneal (RoHS Compliant)
• Compliant with USB 2.0 Short Circuit Requirements
Without Additional External Components
The ISL54206A is available in a small 10 Ld 2.1mmx1.6mm
ultra-thin µTQFN package and a 10 Ld 3mmx3mm TDFN
package. It operates over a temperature range of -40 to
+85°C.
Applications
• MP3 and Other Personal Media Players
• Cellular/Mobile Phones
• PDA’s
Related Literature
• Technical Brief TB363 “Guidelines for Handling and
Processing Moisture Sensitive Surface Mount Devices
(SMDs)”
• Audio/USB Switching
• Application Note AN557 “Recommended Test Procedures
for Analog Switches”
Application Block Diagram
V
DD
µCONTROLLER
ISL54206A
CTRL
IN
VBUS
LOGIC CIRCUITRY
USB
4MΩ
HIGH-SPEED
D-
COM-
COM+
TRANSCEIVER
D+
50kΩ
50kΩ
L
R
CODEC
GND
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.
Copyright Intersil Americas Inc. 2007. All Rights Reserved
1
All other trademarks mentioned are the property of their respective owners.
ISL54206A
Pinouts (Note 1)
ISL54206A
(10 LD µTQFN)
TOP VIEW
ISL54206A
(10 LD TDFN)
TOP VIEW
10
CTRL
D-
VDD
IN
10
9
1
4M
4M
LOGIC
CONTROL
2
D-
VDD
1
9
LOGIC
CONTROL
COM -
D+
3
4
5
8
7
6
D+
IN
COM -
COM +
2
3
4
8
COM +
GND
L
L
7
R
R
6
50k
50k
50k
50k
5
NOTE:
1. ISL54206A Switches shown for IN = Logic “0” and CTRL = Logic “1”.
Truth Table
Pin Descriptions
ISL54206A
ISL54206A
IN
0
CTRL
L, R
OFF
ON
D+, D-
OFF
OFF
ON
PIN NO.
NAME
VDD
IN
FUNCTION
0
1
X
1
2
Power Supply
0
Digital Control Input
1
OFF
3
COM-
COM+
GND
R
Voice and Data Common Pin
Voice and Data Common Pin
Ground Connection
IN: Logic “0” when ≤0.5V, Logic “1” when ≥1.4V with 2.7V to 3.6V
supply.
CTRL: Logic “0” when ≤0.5V or Floating, Logic “1” when ≥1.4V with
2.7V to 3.6V supply.
4
5
6
Audio Right Input
7
L
Audio Left Input
8
D+
USB Differential Input
USB Differential Input
Digital Control Input (Audio Enable)
9
D-
10
CTRL
Ordering Information
PART NUMBER
PART
(Note)
MARKING
TEMP. RANGE (°C)
-40 to +85
PACKAGE (Pb-Free)
10 Ld 3mmx3mm TDFN
PKG. DWG. #
L10.3x3A
ISL54206AIRTZ
ISL54206AIRTZ-T
ISL54206AIRUZ-T
06AZ
06AZ
FU
-40 to +85
10 Ld 3mmx3mm TDFN Tape and Reel
10 Ld Col µTQFN
L10.3x3A
-40 to +85
L10.2.1X1.6A
NOTE: Intersil Pb-free plus anneal products employ special Pb-free material sets; molding compounds/die attach materials and 100% matte tin plate
or NiPdAu termination finish, which are 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.
FN6515.0
June 25, 2007
2
ISL54206A
Absolute Maximum Ratings
Thermal Information
VDD to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to 6.0V
Input Voltages
Thermal Resistance (Typical, Note 3)
θ
(°C/W)
JA
10 Ld μTQFN Package . . . . . . . . . . . . . . . . . . . . . . .
10 Ld 3x3 TDFN Package. . . . . . . . . . . . . . . . . . . . .
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
130
110
D+, D-, L, R (Note 2) . . . . . . . . . . . . . . . . . - 2V to ((V ) + 0.3V)
DD
IN (Note 2). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -2V to 5.5V
CTRL (Note 2). . . . . . . . . . . . . . . . . . . . . . -0.3 to ((V ) + 0.3V)
DD
Output Voltages
COM-, COM+ (Note 2) . . . . . . . . . . . . . . . . -2V to ((V ) + 0.3V)
DD
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)
Operating Conditions
Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . -40°C to +85°C
(Pulsed 1ms, 10% Duty Cycle, Max) . . . . . . . . . . . . . . . . ±100mA
ESD Rating:
HBM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . >7kV
MM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . >400V
CDM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .>1.4kV
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:
2. Signals on D+, D-, L, R, COM-, COM+, CTRL, IN exceeding V
ratings.
or GND by specified amount are clamped. Limit current to maximum current
DD
3. θ is measured with the component mounted on a high effective thermal conductivity test board in free air. See Tech Brief TB379 for details.
JA
Electrical Specifications - 2.7V to 3.6V Supply Test Conditions: V = +3.3V, GND = 0V, V
= 1.4V, V
INL
= 0.5V, (Notes 4), unless otherwise specified.
= 0.5V, V = 1.4V,
CTRLH
DD
INH
V
CTRLL
TEMP
(°C) (Notes 5, 8)
MIN
MAX
(Notes 5, 8) UNITS
PARAMETER
TEST CONDITIONS
TYP
ANALOG SWITCH CHARACTERISTICS
Audio Switches (L, R)
Analog Signal Range, V
ANALOG
V
= 3.0V, IN = 0.5V, CTRL = 1.4V
Full
= 40mA, V or 25
-1.5
-
-
1.5
-
V
DD
DD
ON Resistance, R
ON Resistance, R
ON Resistance, R
ON Resistance, R
V
V
= 5.0V, IN = 0V, CTRL = V , I
DD COMx
= -0.85V to 0.85V,
2.47
Ω
ON
ON
ON
ON
L
R
(See Figure 3)
V
V
= 4.2V, IN = 0V, CTRL = V , I
DD COMx
= 40mA, V or 25
-
-
2.50
2.87
-
-
Ω
Ω
DD
= -0.85V to 0.85V,
L
R
(See Figure 3)
V
= 2.85V, IN = 0V, CTRL = V , I
= 40mA, V
L
25
DD
DD COMx
or V = -0.85V to 0.85V,
(See Figure 3)
R
V
= 3.0V, IN = 0.5V, CTRL = 1.4V, I
= 40mA, V
25
-
-
2.65
-
4.0
5.5
Ω
Ω
DD
COMx
L
or V = -0.85V to 0.85V,
(See Figure 3)
R
Full
R
Matching Between Channels,
V
= 3.0V, IN = 0.5V, CTRL = 1.4V, I
DD
= 40mA, V
25
-
-
0.02
-
0.13
0.16
Ω
Ω
ON
ΔR
COMx
L
or V = Voltage at max R
to 0.85V, (Note 7)
over signal range of -0.85V
ON
R
ON
Full
R
Flatness, R
V
= 3.0V, IN = 0.5V, CTRL = 1.4V, I
= 40mA, V
L
25
Full
25
-
-
-
0.03
-
0.05
0.07
-
Ω
Ω
ON
FLAT(ON)
DD
or V = -0.85V to 0.85V, (Note 6)
COMx
R
Discharge Pull-Down Resistance,
R , R
V
V
V
= 3.6V, IN = 0V, CTRL = 3.6V, V
or
50
kΩ
DD
COM-
= -0.85V, 0.85V, V or V = -0.85V, 0.85V,
L
R
COM+
L
R
and V = floating, Measure current through the
D+
D-
discharge pull-down resistor and calculate resistance
value.
USB Switches (D+, D-)
Analog Signal Range, V
V
= 3.6V, IN = 1.4V, CTRL = 1.4V
Full
+25
0
-
-
V
V
ANALOG
DD
DD
-
ON Resistance, R(
ON)
V
V
= 5.0V, IN = V , CTRL = V , I
DD DD COMx
= 1mA,
17.7
Ω
DD
D+
or V = 5V (See Figure 4)
D-
FN6515.0
June 25, 2007
3
ISL54206A
Electrical Specifications - 2.7V to 3.6V Supply Test Conditions: V = +3.3V, GND = 0V, V
= 1.4V, V
INL
= 0.5V, V
= 1.4V,
CTRLH
DD
INH
V
= 0.5V, (Notes 4), unless otherwise specified. (Continued)
CTRLL
TEMP
(°C) (Notes 5, 8)
MIN
MAX
(Notes 5, 8) UNITS
PARAMETER
TEST CONDITIONS
TYP
ON Resistance, R(
V
V
= 4.2V, IN = V , CTRL = V , I
= 1mA,
+25
+25
-
-
19.5
-
Ω
ON)
ON)
ON)
DD
D+
DD DD COMx
or V = 4.2V (See Figure 4)
D-
ON Resistance, R(
ON Resistance, R(
V
V
= 2.85V, IN = V , CTRL = V , I
= 1mA,
= 1mA,
26
-
Ω
DD
D+
DD DD COMx
or V = 2.85V (See Figure 4)
D-
V
V
= 3.3V, IN = 1.4V, CTRL = 1.4V, I
+25
Full
25
-
-
-
-
-
-
23.5
30
35
Ω
Ω
Ω
Ω
Ω
Ω
DD
D+
COMx
or V = 3.3V (See Figure 4)
D-
-
4.6
-
ON Resistance, R
V
V
= 3.6V, IN = 1.4V, CTRL = 1.4V, I
= 40mA,
5
ON
DD
D+
COMx
or V = 0V to 400mV (See Figure 4)
D-
Full
25
6.5
0.5
0.55
R
Matching Between Channels,
V
= 3.6V, IN = 1.4V, CTRL = 1.4V,
= 40mA, V or V = Voltage at max R over
D+ D- ON
0.06
-
ON
ΔR
DD
I
ON
COMx
signal range of 0V to 400mV, (Note 6)
Full
R
Flatness, R
V
= 3.6V, IN = 1.4V, CTRL = 1.4V,
25
Full
25
-
0.4
0.6
1.0
10
Ω
Ω
ON
FLAT(ON)
DD
I
= 40mA, V or V = 0V to 400mV, (Note 6)
COMx
D+ D-
-
-
-
-
OFF Leakage Current, I
or
V
V
V
= 3.6V, IN = 0V, CTRL = 3.6V, V
COM-
or
-10
-70
nA
nA
D+(OFF)
DD
I
= 0.5V, 0V, V or V = 0V, 0.5V, V and
D-(OFF)
COM+
D+ D-
L
Full
70
= float
R
ON Leakage Current, I
V
V
= 3.3V, IN = 3.3V, CTRL = 0V or 3.3V, V or
D+
25
-10
-75
2
-
10
75
nA
nA
Dx
DD
= 2.0V, V , V and V = float
,V
D-
COM- COM+ L R
Full
DYNAMIC CHARACTERISTICS
Turn-ON Time, t
V
V
V
V
= 2.7V, R = 50Ω, C = 10pF, (See Figure 1)
25
25
25
25
-
-
-
-
67
48
18
50
-
-
-
-
ns
ns
ns
ON
Turn-OFF Time, t
DD
DD
DD
DD
L
L
= 2.7V, R = 50Ω, C = 10pF, (See Figure 1)
OFF
Break-Before-Make Time Delay, t
L
L
= 2.7V, R = 50Ω, C = 10pF, (See Figure 2)
D
L
L
Skew, t
= 3.3V, IN = 3.3V, CTRL = 0V or 3.3V, R = 45Ω,
ps
SKEW
L
C = 10pF, t = t = 750ps at 480Mbps,
L
R
F
(Duty Cycle = 50%) (See Figure 7)
Total Jitter, t
V
= 3.3V, IN = 3.3V, CTRL = 0V or 3.3V, R = 45Ω,
25
25
25
-
-
-
210
250
-110
-
-
-
ps
ps
dB
J
DD
L
C = 10pF, t = t = 750ps at 480Mbps
L
R
F
Propagation Delay, t
V
= 3.3V, IN = 3.3V, CTRL = 0V or 3.3V, R = 45Ω,
DD L
PD
C = 10pF, (See Figure 7)
L
Crosstalk (Channel-to-Channel),
R to COM-, L to COM+
V
= 3.3V, IN = 0V, CTRL = 3.3V, R = 32Ω,
DD L
f = 20Hz to 20kHz, V or V = 0.707V
(2V
),
P-P
R
L
RMS
(See Figure 6)
Total Harmonic Distortion
f = 20Hz to 20kHz, V
= 3.0V, IN = 0V, CTRL = 3.0V,
25
-
0.06
-
%
DD
V or V = 0.707V
(2V ), R = 32Ω
L
R
RMS
P-P
L
USB Switch -3dB Bandwidth
Signal = 0dBm, 0.2V
offset, R = 50Ω, C = 5pF
25
25
-
-
630
6
-
-
MHz
pF
DC
L
L
D+/D- OFF Capacitance, C
, f = 1MHz, V
= 3.3V, IN = 0V, CTRL = 3.3V,
D+(OFF)
DD
or V = V
C
V
= 0V, (See Figure 5)
D-(OFF)
L/R OFF Capacitance, C
D-
D+
COMx
,
f = 1MHz, V
= 3.3V, IN = 0V, CTRL = 0V or 3.3V,
25
25
-
-
9
-
-
pF
pF
LOFF
DD
V or V = V
C
= 0V, (See Figure 5)
ROFF
COM ON Capacitance, C
L
R
COMx
, f = 1MHz, V
= 3.3V, IN = 3.0V, CTRL = 0V or 3.3V,
= 0V, (See Figure 5)
COMx
10
COM-(ON)
DD
or V = V
C
V
COM+(ON)
POWER SUPPLY CHARACTERISTICS
Power Supply Range, V
D-
D+
Full
25
2.5
-
6
-
5.5
8
V
DD
Positive Supply Current, I
V
= 3.6V, IN = 0V or 3.6V, CTRL = 3.6V
-
-
-
-
-
-
μA
μA
μA
μA
nA
nA
DD
DD
Full
25
10
-
Positive Supply Current, I
Positive Supply Current, I
V
V
V
= 4.2V, IN = 0V or 4.2V, CTRL = 4.2V
= 5.0V, IN = 0V or 5.0V, CTRL = 5.0V
= 3.6V, IN = 0V, CTRL = 0V or float
6
8
1
-
DD
DD
DD
DD
DD
DD
25
-
Positive Supply Current, I
(Low Power State)
25
7
Full
140
FN6515.0
June 25, 2007
4
ISL54206A
Electrical Specifications - 2.7V to 3.6V Supply Test Conditions: V = +3.3V, GND = 0V, V
= 1.4V, V
INL
= 0.5V, V
= 1.4V,
CTRLH
DD
INH
V
= 0.5V, (Notes 4), unless otherwise specified. (Continued)
CTRLL
TEMP
(°C) (Notes 5, 8)
MIN
MAX
(Notes 5, 8) UNITS
PARAMETER
TEST CONDITIONS
TYP
DIGITAL INPUT CHARACTERISTICS
Voltage Low, V
, V
V
V
V
V
V
V
= 2.7V to 3.6V
Full
Full
Full
Full
Full
Full
-
-
-
0.5
-
V
V
INL
CTRLL
DD
DD
DD
DD
DD
DD
Voltage High, V
, V
= 2.7V to 3.6V
1.4
-50
-50
-2
INH CTRLH
Input Current, I , I
= 3.6V, IN = 0V, CTRL = 0V
= 3.6V, IN = 3.6V, CTRL = 0V
= 3.6V, IN = 0V, CTRL = 3.6V
= 3.6V, IN = 0V, CTRL = 3.6V
20
20
1.1
4
50
50
2
nA
nA
μA
MΩ
INL CTRLL
Input Current, I
Input Current, I
INH
CTRLH
CTRL Pull-Down Resistor, R
NOTES:
-
-
CTRL
4. V
= Input voltage to perform proper function.
LOGIC
5. The algebraic convention, whereby the most negative value is a minimum and the most positive a maximum, is used in this data sheet.
6. Flatness is defined as the difference between maximum and minimum value of on-resistance over the specified analog signal range..
7. R
R
matching between channels is calculated by subtracting the channel with the highest max R
value, between L and R or between D+ and D-.
value from the channel with lowest max
ON
ON
ON
8. Parts are 100% tested at +25°C. Over temperature limits established by characterization and are not production tested.
Test Circuits and Waveforms
C
V
DD
V
t <20ns
r
t <20ns
f
DD
LOGIC
INPUT
50%
0V
CTRL
V
INPUT
V
t
OUT
OFF
AUDIO or USB
SWITCH
INPUT
COMx
SWITCH
INPUT
V
INPUT
0V
IN
V
OUT
90%
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
------------------------------
V
= V
OUT
(INPUT)
R
+ R
(ON)
L
FIGURE 1A. MEASUREMENT POINTS
FIGURE 1B. TEST CIRCUIT
FIGURE 1. SWITCHING TIMES
FN6515.0
June 25, 2007
5
ISL54206A
Test Circuits and Waveforms (Continued)
V
DD
C
CTRL
D- or D+
V
V
V
OUT
INPUT
DD
COMx
LOGIC
INPUT
L or R
IN
C
R
50Ω
L
L
0V
10pF
GND
V
IN
V
OUT
0V
90%
SWITCH
OUTPUT
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
V
DD
DD
C
C
R
= V /100mA
R = V /40mA
ON 1
ON
1
CTRL
CTRL
D- OR D+
L OR R
V
V
D- OR D+
L OR R
OV
VDD
IN
IN
V
V
1
1
40mA
100mA
COMx
COMx
GND
GND
Repeat test for all switches.
Repeat test for all switches.
FIGURE 4. USB R
FIGURE 3. AUDIO R
TEST CIRCUIT
TEST CIRCUIT
ON
ON
FN6515.0
June 25, 2007
6
ISL54206A
Test Circuits and Waveforms (Continued)
V
V
DD
DD
C
C
CTRL
CTRL
L OR R
AUDIO OR USB
SIGNAL
GENERATOR
32Ω
COMx
IN
IN
IMPEDANCE
ANALYZER
0V
0V or
DD
V
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 5. CAPACITANCE TEST CIRCUIT
FIGURE 6. AUDIO CROSSTALK TEST CIRCUIT
V
DD
C
t
ri
90%
50%
CTRL
IN
10%
90%
DIN+
DIN-
V
DD
15.8Ω
t
skew_i
OUT+
D+
D-
COM+
COM-
50%
10%
DIN+
DIN-
45Ω
143Ω
15.8Ω
C
L
t
fi
OUT-
t
ro
45Ω
C
143Ω
90%
L
10%
90%
50%
OUT+
OUT-
t
skew_o
GND
50%
|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.
10%
t
f0
FIGURE 7A. MEASUREMENT POINTS
FIGURE 7B. TEST CIRCUIT
FIGURE 7. SKEW TEST
FN6515.0
June 25, 2007
7
ISL54206A
Application Block Diagrams
VDD
μCONTROLLER
ISL54206A
IN
CTRL
VBUS
LOGIC CIRCUITRY
USB
4MΩ
HIGH-SPEED
TRANSCEIVER
D-
COM-
COM+
D+
50kΩ
50kΩ
L
R
CODEC
GND
LOGIC CONTROL VIA MICRO-PROCESSOR
VDD
μCONTROLLER
VBUS
ISL54206A
CTRL
IN
LOGIC CIRCUITRY
4MΩ
22kΩ
USB
4MΩ
HIGH-SPEED
TRANSCEIVER
D-
COM-
D+
50kΩ
50kΩ
L
COM+
R
CODEC
GND
LOGIC CONTROL VIA VBUS VOLTAGE FROM COMPUTER OR USB HUB
The ISL54206A was specifically designed for MP3 players,
Detailed Description
cell phones and other personal media player 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 of this functionality is shown above.
The ISL54206A device is a dual single pole/double throw
(SPDT) analog switch device that can operate from a single
dc power supply in the range of 2.5V to 5.5V. 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, cell phones, and other
personal media players.
The ISL54206A 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 cellphone. The ISL54206A also contains a logic
control pin (CTRL) that when driven Low while IN is Low,
opens all switches and puts the part into a low power state,
The part consists of two 3Ω 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.
drawing typically 1nA of I
DD
current.
A detailed description of the two types of switches is
provided in the sections following. The USB transmission
FN6515.0
June 25, 2007
8
ISL54206A
and audio playback are intended to be mutually exclusive
operations.
The USB switches are active (turned ON) whenever the IN
voltage is ≥1.4V.
Note: Whenever the USB switches are ON the audio drivers
of the CODEC need to be at AC or DC ground or floating to
keep from interfering with the data transmission.
Audio Switches
The two audio switches (L, R) are 3Ω 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. Crosstalk
between the audio switches over the audio band is < -110dB.
ISL54206A Operation
The discussion that follows will discuss using the ISL54206A
in the typical application shown in the block diagrams on
page 8.
Over a signal range of ±1V (0.707Vrms) with V
these switches have an extremely low r
>2.7V,
resistance
DD
ON
VDD SUPPLY
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 8,
Figures 9, Figures 10, and Figures 11 THD+N performance
curves.
The DC power supply connected at VDD (pin 1) provides the
required bias voltage for proper switch operation. The part
can operate with a supply voltage in the range of 2.5V to
5.5V.
In a typical USB/Audio application for portable battery
These switches are uni-directional switches. The audio
drivers should be connected at the L and R side of the switch
(pin 7 and pin 8) and the speaker loads should be connected
at the COM side of the switch (pin 3 and pin 4).
powered devices the V
voltage will come from a battery or
DD
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
voltage be ≥2.5V in order to get
DD
The audio switches are active (turned ON) whenever the IN
voltage is ≤0.5V and the CTRL voltage to ≥1.4V.
a USB data signal level above 2.5V.
LOGIC CONTROL
Note: Whenever the audio switches are ON the USB
transceivers need to be in the high impedance state or static
high or low state.
The state of the ISL54206A device is determined by the
voltage at the IN pin (pin 2) and the CTRL pin (pin 10). Refer
to truth-table on page 2 of data sheet. These logic pins are
1.8V logic compatible when V
is in the range of 2.7V to
USB Switches
DD
3.6V and can be controlled by a standard μprocessor.
The two USB switches (D+, D-) are bidirectional switches
that can pass rail-to-rail signals. When powered with a 3.6V
The CTRL pin is internally pulled low through a 4MΩ resistor to
ground and can be left floating or tri-stated by the µprocessor.
The CTRL control pin is only active when IN is logic “0”.
supply these switches have a nominal r
of 4.6Ω over the
(ON)
flatness of 0.4Ω.
signal range of 0V to 400mV with a r
(ON)
matching between the D+ and D- switches over
The r
(ON)
The IN pin does not have an internal pull-down resistor and
must not be allowed to float. It must be driven High or Low.
this signal range is only 0.06Ω ensuring minimal impact by
the switches to USB high speed signal transitions. As the
The voltage at the IN pin can exceed the V
voltage by as
signal level increases the r
resistance increases. At
DD
(ON)
much as 2.55V. This allows the VBUS voltage from a
computer or USB hub (4.4V to 5.25V) to drive the IN pin
while the VDD voltage is in the range of 2.7V to 3.6V. An
external pull-down resistor is required from the IN pin to
ground when directly driving the IN pin with the computer
VBUS voltage. See the section titled “USING THE
COMPUTER VBUS VOLTAGE TO DRIVE THE “IN’ PIN”.
signal level of 3.3V the switch resistance is nominally 23Ω.
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 high-speed eye
diagram Figure 15.
Logic control voltage levels:
IN = Logic “0” (Low) when IN ≤0.5V
IN = Logic “1” (High) when IN ≥1.4V
CTRL = Logic “0” (Low) when ≤0.5V or floating.
CTRL = Logic “1” (High) when ≥1.4V
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 full-
speed eye diagram Figures 12-14.
Audio Mode
The maximum signal range for the USB switches is from
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) 3Ω audio switches are ON and the D- and D+ 5Ω USB
switches are OFF (high impedance).
-1.5V to V . The signal voltage at D- and D+ should not be
DD
allow to exceed the V
more than -1.5V.
voltage rail or go below ground by
DD
FN6515.0
June 25, 2007
9
ISL54206A
When nothing is plugged into the common connector or a
headphone is plugged into the common connector, the
computer or USB hub (4.4V to 5.25V) to drive the IN pin
while the V voltage is in the range of 2.7V to 3.6V.
DD
μprocessor will sense that there is no voltage at the VBUS
pin of the connector and will drive and hold the IN control pin
of the ISL54206A low. As long as the CTRL = Logic “1,” the
ISL54206A part will be in the audio mode and the audio
drivers of the media player can drive the headphones and
play music.
External IN Series Resistor
The ISL54206A contains a clamp circuit between IN and
VDD. Whenever the IN voltage is greater than the V
DD
voltage by more than 2.55V, current will flow through this
clamp circuitry into the V power supply bus.
DD
During normal USB operation, V
is in the range of 2.7V to
DD
USB Mode
3.6V and IN (VBUS voltage from computer or USB hub) is in
the range of 4.4V to 5.25V, the clamp circuit is not active and
If the IN pin = Logic “1” and 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 3Ω audio switches are
OFF (high impedance).
no current will flow through the clamp into the V
supply.
DD
In a USB application, the situation can exist where the V
BUS
voltage from the computer could be applied at the IN pin
before the V voltage is up to its normal operating voltage
When a USB cable from a computer or USB hub is
DD
range and current will flow through the clamp into the V
connected at the common connector, the μprocessor will
sense the present of the 5V VBUS and drive the IN pin
voltage high. The ISL54206A 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.
DD
power supply bus. This current could be quite high when
is OFF or at 0V and could potentially damage other
V
DD
components connected in the circuit. In the application
circuit, a 22kΩ resistor has been put in series with the IN pin
to limit the current to a safe level during this situation.
When the USB cable is disconnected, the μprocessor will
sense that the 5V VBUS voltage is no longer connected and
will drive the IN pin low and put the part back into the Audio
or Low Power Mode.
It is recommended that a current limiting resistor in the range
of 10kΩ to 50kΩ be connected in series with the IN pin. It will
have minimal impact on the logic level at the IN pin during
normal USB operation and protect the circuit during the time
VBUS is present before VDD is up to its normal operating
voltage.
Low Power Mode
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 (high impedance). In
this state, the device draws typically 1nA of current.
Note: No external resistor is required in applications where
the voltage at the IN pin will not exceed V
2.55V.
by more than
DD
USING THE COMPUTER VBUS VOLTAGE TO DRIVE THE
“IN” PIN
External IN Pull-Down Resistor
Rather than using a micro-processor to control the IN logic
pin you can directly drive the IN pin using the VBUS voltage
from the computer or USB hub. In order to do this you must
connected an external resistor from the IN pin to ground.
When a headphone or nothing is connected at the common
connector the external pull-down will pull the IN pin low
putting the ISL54206A in the Audio mode or Low Power
mode depending on the condition of the CTRL pin.
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.
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 Mode or Low
Power Mode depending on the condition of the CTRL pin.
Note: The voltage at the IN pin can exceed the VDD voltage
by as much as 2.55V. This allows the VBUS voltage from a
FN6515.0
June 25, 2007
10
ISL54206A
Typical Performance Curves T = +25°C, Unless Otherwise Specified
A
0.4
0.3
0.2
0.1
0
0.11
R
V
= 32Ω
R
V
= 32Ω
= 0.707V
LOAD
= 3V
LOAD
LOAD
DD
RMS
0.1
3V
P-P
0.09
0.08
0.07
0.06
0.05
0.04
V
= 2.6V
DD
2.5V
V
= 2.7V
P-P
DD
V
= 3.6V
DD
2V
P-P
V
= 3V
DD
1V
P-P
20
200
FREQUENCY (Hz)
2k
20k
20
200
FREQUENCY (Hz)
2k
20k
FIGURE 9. THD+N vs SIGNAL LEVELS vs FREQUENCY
FIGURE 8. THD+N vs SUPPLY VOLTAGE vs FREQUENCY
0.5
0.5
R
= 32Ω
LOAD
FREQ = 1kHz
= 3V
R
= 32Ω
LOAD
FREQ = 1kHz
= 3V
V
DD
V
DD
0.4
0.3
0.2
0.1
0
0.4
0.3
0.2
0.1
0
0
10
20
30
40
50
0
0.5
1
1.5
2
2.5
3
3.5
OUTPUT POWER (mW)
OUTPUT VOLTAGE (V
)
P-P
FIGURE 10. THD+N vs OUTPUT VOLTAGE
FIGURE 11. THD+N vs OUTPUT POWER
FN6515.0
June 25, 2007
11
ISL54206A
Typical Performance Curves T = +25°C, Unless Otherwise Specified (Continued)
A
V
=5.5V
DD
TIME SCALE (10ns/DIV)
FIGURE 12. EYE PATTERN: 12MBps WITH SWITCHES IN THE SIGNAL PATH
FN6515.0
June 25, 2007
12
ISL54206A
Typical Performance Curves T = +25°C, Unless Otherwise Specified (Continued)
A
V
=3.3V
DD
TIME SCALE (10ns/DIV)
FIGURE 13. EYE PATTERN: 12MBps WITH SWITCHES IN THE SIGNAL PATH
FN6515.0
June 25, 2007
13
ISL54206A
Typical Performance Curves T = +25°C, Unless Otherwise Specified (Continued)
A
V
=2.5V
DD
TIME SCALE (10ns/DIV)
FIGURE 14. EYE PATTERN: 12MBps WITH SWITCHES IN THE SIGNAL PATH
FN6515.0
June 25, 2007
14
ISL54206A
Typical Performance Curves T = +25°C, Unless Otherwise Specified (Continued)
A
V
= 3.3V
DD
TIME SCALE (0.2ns/DIV.)
FIGURE 15. EYE PATTERN: 480MBps USB SIGNAL WITH SWITCHES IN THE SIGNAL PATH
1
0
Die Characteristics
USB SWITCH
SUBSTRATE POTENTIAL (POWERED UP):
-1
-2
-3
-4
GND (TDFN Paddle Connection: Tie to GND or Float)
TRANSISTOR COUNT:
98
PROCESS:
Submicron CMOS
R
V
= 50Ω
L
= 0.2V to 2V
IN
P-P P-P
1M
10M
100M
1G
FREQUENCY (Hz)
FIGURE 16. FREQUENCY RESPONSE
FN6515.0
June 25, 2007
15
ISL54206A
Ultra Thin Quad Flat No-Lead Plastic Package (UTQFN)
L10.2.1x1.6A
D
A
B
10 LEAD ULTRA THIN QUAD FLAT NO-LEAD PLASTIC
PACKAGE
6
MILLIMETERS
INDEX AREA
N
E
SYMBOL
MIN
0.45
NOMINAL
MAX
0.55
NOTES
2X
0.10 C
A
A1
A3
b
0.50
-
1
2
2X
0.10 C
-
-
0.05
-
TOP VIEW
0.127 REF
-
0.15
2.05
1.55
0.20
0.25
2.15
1.65
5
0.10 C
0.05 C
D
2.10
-
C
A
E
1.60
-
SEATING PLANE
e
0.50 BSC
-
A1
k
0.20
0.35
-
0.40
10
4
-
-
SIDE VIEW
L
0.45
-
(DATUM A)
N
2
PIN #1 ID
Nd
Ne
θ
3
4xk
1
2
NX L
1
3
N
0
-
12
4
(DATUM B)
Rev. 3 6/06
N-1
NOTES:
5
NX b
e
1. Dimensioning and tolerancing conform to ASME Y14.5-1994.
2. N is the number of terminals.
3. Nd and Ne refer to the number of terminals on D and E side,
respectively.
0.10 M C A B
0.05 M C
3
(ND-1) X e
4. All dimensions are in millimeters. Angles are in degrees.
5. Dimension b applies to the metallized terminal and is measured
between 0.15mm and 0.30mm from the terminal tip.
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.
BOTTOM VIEW
C
L
(A1)
NX (b)
L
5
7. Maximum package warpage is 0.05mm.
e
8. Maximum allowable burrs is 0.076mm in all directions.
9. Same as JEDEC MO-255UABD except:
SECTION "C-C"
TERMINAL TIP
C C
No lead-pull-back, "A" MIN dimension = 0.45 not 0.50mm
"L" MAX dimension = 0.45 not 0.42mm.
FOR ODD TERMINAL/SIDE
10. For additional information, to assist with the PCB Land Pattern
Design effort, see Intersil Technical Brief TB389.
b
2.50
1.75
0.05 MIN
L
2.00
0.80
0.275
0.10 MIN
0.25
0.50
DETAIL “A” PIN 1 ID
10
LAND PATTERN
FN6515.0
June 25, 2007
16
ISL54206A
Thin Dual Flat No-Lead Plastic Package (TDFN)
L10.3x3A
2X
0.10 C
A
10 LEAD THIN DUAL FLAT NO-LEAD PLASTIC PACKAGE
A
D
MILLIMETERS
2X
0.10
C B
SYMBOL
MIN
0.70
-
NOMINAL
MAX
0.80
0.05
NOTES
A
A1
A3
b
0.75
-
-
0.20 REF
0.25
3.0
-
E
-
6
INDEX
AREA
0.20
2.95
2.25
2.95
1.45
0.30
3.05
2.35
3.05
1.55
5, 8
D
-
TOP VIEW
B
A
D2
E
2.30
3.0
7, 8
-
// 0.10
0.08
C
E2
e
1.50
0.50 BSC
-
7, 8
-
C
k
0.25
0.25
-
-
A3
C
SIDE VIEW
L
0.30
10
0.35
8
SEATING
PLANE
N
2
D2
D2/2
2
Nd
5
3
7
8
(DATUM B)
Rev. 3 3/06
NOTES:
1
6
1. Dimensioning and tolerancing conform to ASME Y14.5-1994.
2. N is the number of terminals.
INDEX
AREA
NX k
E2
3. Nd refers to the number of terminals on D.
(DATUM A)
4. All dimensions are in millimeters. Angles are in degrees.
E2/2
5. Dimension b applies to the metallized terminal and is measured
between 0.15mm and 0.30mm from the terminal tip.
NX L
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.
N
N-1
NX b
5
8
e
7. Dimensions D2 and E2 are for the exposed pads which provide
improved electrical and thermal performance.
(Nd-1)Xe
REF.
M
0.10
C A B
8. Nominal dimensions are provided to assist with PCB Land
Pattern Design efforts, see Intersil Technical Brief TB389.
BOTTOM VIEW
C
L
9. Compliant to JEDEC MO-229-WEED-3 except for D2
dimensions.
(A1)
NX (b)
L1
L
9
5
e
SECTION "C-C"
TERMINAL TIP
FOR ODD TERMINAL/SIDE
C C
All Intersil U.S. products are manufactured, assembled and tested utilizing ISO9000 quality systems.
Intersil Corporation’s quality certifications can be viewed 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
FN6515.0
June 25, 2007
17
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