FSA110K8X - Fairchild Semiconductor

FSA110 — Audio and Wired-OR USB2.0 Hi-Speed
(480Mbps) Switch with Negative Signal Capability and
Built-in Termination
Features
Description







The FSA110 is a Double-Pole, Single Throw (DPST)
switch that combines a low-distortion audio path with
low off capacitance for USB applications. This
configuration is ideal for wired-OR configurations,
enabling shared USB2.0 Hi-Speed (HS) and audio on a
single connector. The architecture is designed to allow
audio signals to swing below ground so a common USB
and headphone jack can be used for personal media
players and portable peripheral devices.
6pF Typical Switch Off Capacitance for HS USB
2.5Ω Typical On Resistance for Audio Signaling
Negative-Swing-Capable Audio Channel
Automatic USB Detection Available
Power-Off Protection on the D+/R, D-/L Ports
Flow-Through Pin Out Eliminates PCB Vias
Built-In Termination on Unselected Audio Paths
Inhibits Audio Pop
The FSA110 is configured for default USB transfer,
which gives the user control of when the audio path is
enabled. The audio path defaults to audio mute and is
enabled with /OE. The FSA110 includes a power-off
feature on the common port when VCC=0V to guarantee
signal isolation.
Applications


Cell Phone, PDA, Digital Camera, and Notebook
LCD Monitor, TV, and Set-Top Box
IMPORTANT NOTE:
For additional performance information, please contact
[email protected].
Ordering Information
Part
Number
Top Mark
FSA110K8X
A110
Green
8-Lead US8, JEDEC MO-187, Variation CA, 3.0mm Wide Package
FSA110UMX
GZ
Green
10-Lead Quad, Ultrathin MLP, 1.4 x 1.8mm
Package Description
Eco Status
For Fairchild’s definition of Eco Status, please visit: http://www.fairchildsemi.com/company/green/rohs_green.html
VCC
Rpu
Control
Block
R
/OE
D+/R
RT
L
D-/L
RT
Figure 1.
© 2007 Fairchild Semiconductor Corporation
FSA110 Rev. 1.0.2
Analog Symbol
www.fairchildsemi.com
FSA110 — Audio and Wired-OR USB2.0 Hi-Speed Switch with Negative Signal Capability and Built-in Termination
July 2013
D+ /R D -/L
NC
1
8
VCC
D+/R
2
7
/OE
D-/L
3
6
R
GND
4
5
Figure 2.
NC
8
VCC
9
/OE
10
L
8-Lead US8
7
6
1
2
R
L
Figure 3.
5
NC
4
GND
3
NC
10-Pin UMLP
Pin Descriptions
Name
Description
VCC
Power supply.
/OE
Output enable. This pin defaults HIGH, allowing the user to mute the audio channel during power up.
The audio path is only connected when /OE is driven LOW. The switch defaults to USB mode.
R, L
Audio right and left input sources.
D+/R, D-/L
USB and audio common connector port.
Truth Table
VCC
/OE(1)
Audio Mode
USB Mode
LOW
-
OFF
ON
HIGH
LOW
ON
OFF
-
HIGH
OFF
ON
Note:
1. /OE- Internal pull-up resistor to VCC provides a default USB connection. /OE must be driven LOW to activate the
audio path.
© 2007 Fairchild Semiconductor Corporation
FSA110 Rev. 1.0.2
www.fairchildsemi.com
2
FSA110 — Audio and Wired-OR USB2.0 Hi-Speed Switch with Negative Signal Capability and Built-in Termination
Pin Configuration
The FSA110 is a combined USB and audio switch that
enables sharing the D+/D- lines of a USB connector with
stereo audio CODEC outputs. The /OE pin has an
internal pull-up resistor, which results in a default USB
mode configuration. This configuration provides built-in
mute on the audio path during system power-up and in
default USB mode allows the system to transmit USB
data regardless of the switch VCC supply. This
configuration allows the user to override the USB default
state and send analog audio on the USB path when the
USB cable is connected. In such a configuration, there
is no need for auto USB detection. The audio switch
path is capable of handling negative signals, eliminating
the need for large coupling capacitors and greatly
reducing the potential for audio pop. Termination
resistors on the audio R, L ports are enabled when the
switch is in USB mode; which reduces the incidence of
audio pop when enabling the audio path.
Application Diagram
Select
Control
Audio
Codec
/OE
R
D+/R
L
D-/L
HS USB
Controller
Figure 4.
© 2007 Fairchild Semiconductor Corporation
FSA110 Rev. 1.0.2
Typical Application Diagram
www.fairchildsemi.com
3
FSA110 — Audio and Wired-OR USB2.0 Hi-Speed Switch with Negative Signal Capability and Built-in Termination
Functional Description
Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be
operable above the recommended operating conditions and stressing the parts to these levels is not recommended.
In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability.
The absolute maximum ratings are stress ratings only.
Symbol
Parameter
Min.
Max.
Units
VCC
Supply Voltage
-0.5
4.6
V
/OE
Output Enable Control Signal
-0.5
4.6
V
VSW
Switch I/O Voltage(2)
USB Path Active
-1.0
4.6
V
Audio Path Active
VCC–4.6
4.6
V
- 50
mA
IIK
Input Clamp Diode Current
ISW
Switch I/O Current (Continuous)
Audio
100
mA
Peak Switch Current (Pulsed at 1ms Duration,
<10% Duty Cycle)
Audio
150
mA
+150
C
ISWPEAK
TSTG
Storage Temperature Range
-65
TJ
Maximum Junction Temperature
+150
C
TL
Lead Temperature (Soldering, 10 seconds)
+260
C
ESD
Human Body Model (JEDEC: JESD22-A114)
I/O to GND
12
All Other Pins
2
VCC to GND
12
Charged Discharge Model (JEDEC: JESD22-C101)
kV
2
Note:
2. The input and output negative ratings may be exceeded if the input and output diode current ratings are observed.
Recommended Operating Conditions
The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended
operating conditions are specified to ensure optimal performance to the datasheet specifications. Fairchild does not
recommend exceeding them or designing to Absolute Maximum Ratings.
Symbol
Parameter
Min.
Max.
Units
VCC
Supply Voltage
2.7
4.3
V
/OE
Output Enable Control Signal
3.0
4.3
V
VSW
Switch I/O Voltage
USB Path Active
0V
4.3
V
Audio Path Active
Vcc -4.3
4.3
V
-40
+85
°C
TA
Operating Temperature
© 2007 Fairchild Semiconductor Corporation
FSA110 Rev. 1.0.2
www.fairchildsemi.com
4
FSA110 — Audio and Wired-OR USB2.0 Hi-Speed Switch with Negative Signal Capability and Built-in Termination
Absolute Maximum Ratings
All typical values are at 25ºC unless otherwise specified.
Symbol
Parameter
VCC (V)
Conditions
TA = -40 to +85°C
Min.
Typ.(6)
Unit
Max.
Common Pins
VIK
Clamp Diode Voltage
3.0
VIH
Control Input Voltage
HIGH
2.7 to 4.3
VIL
Control Input Voltage
LOW
2.7 to 4.3
IIK = -18mA
-1.2
1.7
V
0.6
VIN = 4.3V
1
-1
10
µA
250
nA
IOFF
Power Off Leakage
Current (Common Port
Only D+/R, D-/L)
0
Common Port (D+/R, D-/L)
VSW = 4.3V or Floating
-10
INC(0N)
On-Leakage Current of
Port D+/R or D-/L
4.3
D+/R, D-/L = 0.3V,
4.0V D+, D-, R, L = Floating
Figure 10
-250
RPu,
/OE Internal Pull-Up
Resistor
4.3
RT
Audio Path Termination
Resistors
4.3
VIN=0.3V or 4.0V
1
3
M
100

Audio Switch Path
VAudio
Audio Analog Signal
Range
RONAudio
Audio Switch On
Resistance(3)
2.7
∆ RONAudio
Audio Delta RON(4)
RFLAT(Audio)
Audio RON Flatness(5)
VCC4.3V
2.7 to 4.3
VCC
V
3.0
Ω
VL/R = -1.5V, 0V,1.5V
ION = 60ma
1.5
2.7
VL/R = 0.7V ION = 60mA
0.4
2.7
VSW=-1.5V to 1.5V ION =
60mA
0.4
0.8
Ω
4.3
/OE = Low or VCC, IOUT = 0
1.5
15
µA
Ω
Power Supply
ICC
Quiescent Supply Current
Notes:
3. On resistance is determined by the voltage drop between the A and B pins at the indicated current through the switch.
4. ∆ RON = RON max – RON min measured at identical VCC, temperature, and voltage. Worst-case signal path, audio or
USB channel, is characterized.
5. Flatness is defined as the difference between the maximum and minimum values of on resistance over the
specified range of conditions.
6. Guaranteed by characterization; not production tested.
© 2007 Fairchild Semiconductor Corporation
FSA110 Rev. 1.0.2
www.fairchildsemi.com
5
FSA110 — Audio and Wired-OR USB2.0 Hi-Speed Switch with Negative Signal Capability and Built-in Termination
DC Electrical Characteristics
All typical value are for VCC = 3.6V at 25ºC unless otherwise specified.
Symbol
Parameter
VCC (V)
Conditions
TA = - 40 to +85°C
Min.
Typ.(7) Max.
Unit
Turn-On Time, /OE to Output
2.7 to
4.3
VD+/R, D-/L = 1.0V
RL = 50Ω, CL = 50Pf
Figure 11, Figure 12,
Figure 13
2
μs
Turn-Off Time, /OE to Output
2.7 to
4.3
VD+/R, D-/L = 1.0V
RL = 50Ω, CL = 50pF
Figure 11, Figure 12,
Figure 13
2
μs
Xtalk
Non-Adjacent Channel
Crosstalk (Audio Mode)
3.3 to
4.3
f = 20kHz, RT = 32Ω,
CL = 0pF
Figure 18
-75
dB
THD
Total Harmonic Distortion
(Audio Mode)
3.0 to
4.3
f = 20Hz to 20 kHz
RL = 32Ω, VIN = 2Vpp
Figure 16
0.05
%
SNR
Signal-to-Noise Ratio (Audio
Mode)
3.3 to
4.3
f = 20kHz to 20kHz,
RL = 32Ω, VIN = 2VPP
Figure 16
80
dB
tON
tOFF
Note:
7. Guaranteed by characterization; not production tested.
Capacitance
All typical values are at 25ºC unless otherwise specified.
Symbol
CIN
COFF
Parameter
VCC (V)
Conditions
TA = - 40 to +85°C
Min.
Typ.(8) Max.
Unit
Control Pin Input Capacitance
3.0 to 4.3
VBIAS = 0.2V
2.5
pF
Switch Off Capacitance
3.0 to 4.3
f = 240MHz
Figure 14
6.0
pF
Note:
8. Guaranteed by characterization; not production tested.
© 2007 Fairchild Semiconductor Corporation
FSA110 Rev. 1.0.2
www.fairchildsemi.com
6
FSA110 — Audio and Wired-OR USB2.0 Hi-Speed Switch with Negative Signal Capability and Built-in Termination
AC Electrical Characteristics
FSA110 — Audio and Wired-OR USB2.0 Hi-Speed Switch with Negative Signal Capability and Built-in Termination
Typical Characteristics
4.00
RON ()
3.00
-40°C
25°C
85°C
2.00
1.00
0.00
-2.00
-1.00
0.00
1.00
2.00
VIN
Figure 5.
RON Audio, VCC=2.7V
4.00
RON ()
3.00
-40°C
25°C
85°C
2.00
1.00
0.00
-2.00
-1.00
0.00
1.00
2.00
VIN
Figure 6.
0
RON Audio, VCC=2.7V
1
10
100
Harmonic Distortion (%)
0.06
0.05
0.04
V CC = 3.0V
V CC = 3.6V
0.03
VCC = 4.3V
0.02
0.01
0.00
Frequency (KHz)
Figure 7.
© 2007 Fairchild Semiconductor Corporation
FSA110 Rev. 1.0.2
Total Harmonic Distortion
www.fairchildsemi.com
7
V ON
IDn(OFF)
NC
A
Dn
V IN
VIN
ION
/OE
/OE
GND
V S = 0 to VCC
GND
VS = 0 or VCC
GND
Each switch port is tested separately.
R ON = VON / ION
Figure 8.
On Resistance
Figure 9.
Off Leakage
HSD
D+, D-, or R/L
D+, D–
VIN
IA(ON)
A
D+/R or
D-
RL VOUT
CL*
RS
GND
GND
Vsw
V/OE
GND
GND
VCNTRL= fn (VCC)
RL, RS, and CL are functions of the application environment
(see tables for specific values).
*CL includes test fixture and stray capacitance.
Figure 10.
On Leakage
Figure 11.
t RISE = 1µs
tFALL = 2.5ns
tRISE = 2.5ns
AC Test Circuit Load
t FALL= 1µs
Vbus
VCC
90%
Input – /OE
VCC/2
GND
90%
Input -VCNTRL
10%
GND
VOH
VCC/2
10%
10%
VOH
90%
90%
Vth(max)
Vth(min)
90%
Output -VOUT
90%
Output – VOUT
VOL
tON
VOL
tON
Figure 12.
tOFF
VCNTRL = fn (VCC)
Turn-On / Turn-Off Waveforms
© 2007 Fairchild Semiconductor Corporation
FSA110 Rev. 1.0.2
Figure 13.
10%
90%
tOFF
Vth =Vbusth or Vaudioth
Turn-On / Turn-Off Waveforms
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8
FSA110 — Audio and Wired-OR USB2.0 Hi-Speed Switch with Negative Signal Capability and Built-in Termination
Test Diagrams
Dn or R/L or D+/R or D- /L
Dn or R/L or
D+/R or D -/L
Capacitance
Meter
Capacitance
Meter
f = 240MHz
VCNTRL = fn (VCC)
VCNTRL = fn (VCC)
Dn or R/L or
D+/ R or D-/L
f = 1MHz
Figure 14.
Dn or R/L or
D+/ R or D-/L
Channel Off Capacitance
Figure 15.
Channel On Capacitance
Audio Analyzer
Network Analyzer
RS
GND
RS
VIN
VS
RT
GND
VCNTRL
GND
GND
VCNTROL = fn (VCC)
RS and R are functions of the application
VCNTRL
VOUT
RT
GND
GND
T
GND
VS
GND
GND
VOUT
GND
VCNTRL = fn (VCC )
R S and R T are functions of the application
environment (see tables for specific values).
VIN
RT
GND
environment (see tables for specific values).
Off Isolation = 20 Log (VOUT / VIN )
Figure 16. Total Harmonic Distortion
Figure 17. Channel Off Isolation
Network Analyzer
NC
RS
GND
VIN
VS
VCNTRL
GND
GND
RT
GND
VCNTRL= fn (VCC)
GND
RS and R T are functions of the application
environment (see tables for specific values
RT
VOUT
GND
CROSSTALK = 20 Log (VOUT / VIN)
Figure 18.
© 2007 Fairchild Semiconductor Corporation
FSA110 Rev. 1.0.2
Non-Adjacent Channel-to-Channel Crosstalk
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9
FSA110 — Audio and Wired-OR USB2.0 Hi-Speed Switch with Negative Signal Capability and Built-in Termination
Test Diagrams (Continued)
8
5
0.70
-B-
2.3±0.1
3.1±.1
2.70
0.15
3.40
-A-
1.80
1.00
1.55
0.30 TYP
1
0.2 C B A
ALL LEAD TIPS
4
PIN #1 IDENT.
ALL LEAD TIPS
0.1 C
0.90 MAX
0.5 TYP
DETAIL A
0.70±0.10
0.10-0.18
-C0.10
0.00
0.17-0.27
0.13
0.50TYP
A B
C
0.4 TYP
GAGE PLANE
0.12
0°-8°
A. CONFORMS TO JEDEC REGISTRATION MO-187
B. DIMENSIONS ARE IN MILLIMETERS.
C. DIMENSIONS ARE EXCLUSIVE OF BURRS, MOLD FLASH,
AND TIE BAR EXTRUSIONS.
SEATING PLANE
DETAIL A
D. DIMENSIONS AND TOLERANCES PER ANSI Y14.5M, 1982.
MAB08AREVC
Figure 19. 8-Lead US8, JEDEC MO-187, Variation CA, 3.0mm Wide Package
Package drawings are provided as a service to customers considering Fairchild components. Drawings may change in any manner
without notice. Please note the revision and/or date on the drawing and contact a Fairchild Semiconductor representative to verify or
obtain the most recent revision. Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions,
specifically the warranty therein, which covers Fairchild products.
Always visit Fairchild Semiconductor’s online packaging area for the most recent package drawings:
http://www.fairchildsemi.com/packaging/
© 2007 Fairchild Semiconductor Corporation
FSA110 Rev. 1.0.2
www.fairchildsemi.com
10
FSA110 — Audio and Wired-OR USB2.0 Hi-Speed Switch with Negative Signal Capability and Built-in Termination
Physical Dimensions
0.15 C
A
1.40
2X
1.700
B
9X
0.563
0.663
1
1.80
PIN #1 QUADRANT
2.100
0.400
0.15 C
2X
10X
0.225
TOP VIEW
RECOMMENDED LAND PATTERN
0.55 MAX.
1.450
0.10 C
0.08 C
0.550
0.152
9X
0.450
SEATING
PLANE
0.050
C
0.400
SIDE VIEW
1.850
10X
0.225
3
9X
OPTIONAL MINIMIAL TOE LAND PATTERN
0.40
6
0.35
0.45
1
10
0.45
0.55
0.500
0.15
10X
0.25
0.100
0.10 C A B
0.05 C
0.100
0.100
BOTTOM VIEW
DETAIL A
PIN #1 TERMINAL
SCALE: 2X
A. DIMENSIONS ARE IN MILLIMETERS.
B. DIMENSIONS AND TOLERANCES PER
ASME Y14.5M, 1994
C. DRAWING FILENAME: UMLP10Arev2
Figure 20.
10-Lead Quad Ultrathin Molded Leadless Package (MLP)
Package drawings are provided as a service to customers considering Fairchild components. Drawings may change in any manner
without notice. Please note the revision and/or date on the drawing and contact a Fairchild Semiconductor representative to verify or
obtain the most recent revision. Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions,
specifically the warranty therein, which covers Fairchild products.
Always visit Fairchild Semiconductor’s online packaging area for the most recent package drawings:
http://www.fairchildsemi.com/packaging/
© 2007 Fairchild Semiconductor Corporation
FSA110 Rev. 1.0.2
www.fairchildsemi.com
11
FSA110 — Audio and Wired-OR USB2.0 Hi-Speed Switch with Negative Signal Capability and Built-in Termination
Physical Dimensions
FSA110 — Audio and Wired-OR USB2.0 Hi-Speed Switch with Negative Signal Capability and Built-in Termination
12
www.fairchildsemi.com
© 2007 Fairchild Semiconductor Corporation
FSA110 Rev. 1.0.2