FAIRCHILD FSA8058

FSA8058
Audio Jack Detection and Configuration Switch with
Moisture Sensing
Description
Features
Accessory Plug-In
3-Pole or 4-Pole Audio Jack
Send/End Key Pressed
Moisture
Detection
Switch Type
MIC
VDD
2.5 V to 4.5 V
VIO
1.6 to VDD
THD (MIC)
0.01% Typical
ESD (Air Gap)
15 kV
The FSA8058 is an audio jack detection switch for
3-pole and 4-pole accessories. The FSA8058 features
moisture sensing, which prevents false positive
detection of accessories in the audio jack. The FSA8058
also features an integrated MIC switch that allows a
processor to configure attached accessories. The
architecture is designed to allow common third-party
headphones to be used for listening to music from
mobile handsets, personal media players, and portable
peripheral devices.
 Prevents False Detection of Accessories in the Audio
Jack when Moisture is Present
Operating
Temperature
-40°C to 85°C
10-Lead UMLP, 1.4 mm ×
1.8 mm × 0.5 mm, 0.4 mm Pitch
Package
Top Mark
FSA8058
Ordering Information
NC
FSA8058UMX
 Removes Audio Jack Pop and Click Caused by
MIC Bias
 Detects Audio Jack Accessories:
- Standard Headphones
- Send / End Button Presses
 Integrates a MIC Switch for 4-Pole Configuration
Applications
Related Resources



3.5 mm and 2.5 mm Audio Jacks
 FSA8058 Evaluation Board
Cellular Phones, Smart Phones
 For samples and questions, please contact:
[email protected]
MP3 and PMP
GPIO Interface
FSA8058
Baseband
Logic
Insert and
Moisture
Detection
Jack Detect
Audio Jack
Key Detection
CODEC
MIC
MIC- Send/End Key
Figure 1.
© 2012 Fairchild Semiconductor Corporation
FSA8058 • Rev. 1.0.0
System Diagram
www.fairchildsemi.com
FSA8058 — Audio Jack Detection and Configuration Switch with Moisture Sensing
July 2013
DET VIO
2
1
1
EN
3
10
J_DET
J_POLE
4
9
GND
VDD
5
8
J_MIC
6
7
S/E MIC
Figure 2. Pin Assignment (Through View)
Pin Definitions
Name Pin #
Type
Description
DET = LOW, Plugged
DET
2
Output
Indicates if audio jack is plugged in as detected on
J_DET pin
JPOLE
4
Output
Indicates if audio jack is a 3-pole jack or a 4-pole jack
S/E
6
Output
Indicates state of SEND/END for a 4-pole accessory
when a key has been pressed
S/E = LOW, No Key Press
EN
3
Input
Controls internal microphone switch between the J_MIC
and MIC pins
EN = LOW, Switch Open
10
Input
Input from a pin of the audio jack socket tied to a
mechanical switch that typically closes whenever an
audio jack is inserted into that socket
J_DET = HIGH, Unplugged
J_DET
MIC
7
Switch
Microphone switch path that goes to the CODEC
microphone amplifier input
EN = LOW, Switch Open
J_MIC
8
Switch
Microphone switch path that connects to the microphone EN = LOW, Switch Open
and SEND/END key audio jack pole
EN = HIGH, Switch Closed
VDD
5
Power
Core supply voltage
VIO
1
Power
Baseband I/O supply voltage
GND
9
Ground Ground for both the audio jack and the PCB
© 2012 Fairchild Semiconductor Corporation
FSA8058 • Rev. 1.0.0
DET = HIGH, Unplugged
JPOLE = LOW, 4-Pole Jack
JPOLE = HIGH, 3-Pole Jack
S/E = HIGH, Key Press
EN = HIGH, Switch Closed
J_DET = LOW, Plugged
EN = HIGH, Switch Closed
FSA8058 — Audio Jack Detection and Configuration Switch with Moisture Sensing
Pin Configuration
www.fairchildsemi.com
2
Moisture Issue
Moisture Detection
Mobile device manufacturers today face a customer
experience issue when liquid/moisture enters the audio
jack connector housing and causes electrical shorts
between metal connectors. The mobile device
recognizes it as an accessory insert, resulting in the
mobile device rerouting all the audio signals though the
audio jack path, where the end user loses all audio
function on the device.
The FSA8058 automatically detects moisture on the
J_DET pin. If there is moisture, the device enters
Moisture Mode and monitors for a real accessory insert.
It remains in Moisture Mode until the device no longer
detects moisture on the J_DET pin.
Baseband
Processor
2.5 to 4.5V
VDD
1.6 to VDD
VIO
Audio Jack
FSA8058
GPIO1
GPIO2
EN
GPIO3
S/E
GPIO4
JPOLE
1 2 3 4
J_DET
Oscillator
Logic
MIC
Detection
Key Press
Detection
Audio
CODEC
MIC Bias
Jack Detection
(Moisture)
DET
J_MIC
MIC
GND
MIC
1
L SPKR
R SPKR
Figure 3.
© 2012 Fairchild Semiconductor Corporation
FSA8058 • Rev. 1.0.0
2
3
4
FSA8058 — Audio Jack Detection and Configuration Switch with Moisture Sensing
Operation and Application Description
Typical Application Diagram
www.fairchildsemi.com
3
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
VDD, VIO Supply Voltage from Battery
Min.
Max.
Unit
-0.5
6.0
V
V
VSW
Switch I/O Voltage for “S” Switch, All Input Voltages Except J_DET
-0.5
VDD+0.5
VJD
Input Voltage for J_DET Input
-1.5
VDD+0.5
IIK
Input Clamp Diode Current
-50
ISW
Switch I/O Current (Continuous)
TSTG
Storage Temperature Range
-65
TJ
Maximum Junction Temperature
TL
Lead Temperature (Soldering, 10 Seconds)
IEC 61000-4-2 System ESD
ESD
JEDEC JESD22-A114, Human Body Model
Air Gap
15.0
Contact
8.0
All Pins
7.5
J_DET, J_MIC, VDD, VIO
12.0
JEDEC JESD22-C101, Charged Device Model All Pins
V
mA
50
mA
+150
C
+150
C
+260
C
kV
2.0
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.
Unit
2.5
4.5
V
VDD
Battery Supply Voltage
VIO
Parallel I/O Supply Voltage
1.6
VDD
V
TA
Operating Temperature
-40
+85
ºC
© 2012 Fairchild Semiconductor Corporation
FSA8058 • Rev. 1.0.0
FSA8058 — Audio Jack Detection and Configuration Switch with Moisture Sensing
Absolute Maximum Ratings
www.fairchildsemi.com
4
All typical values are at TA=25°C unless otherwise specified.
Symbol
Parameter
VDD (V)
Condition
TA = -40 to +85°C
Min.
Typ.
Max.
2.8
0.85
2.00
3.0
0.70
2.00
0.50
2.00
3.8
0.40
2.00
2.8
0.45
1.50
0.40
1.50
0.35
1.50
0.30
1.50
Unit
MIC Switch
RON
RFLAT(ON)
MIC Switch On Resistance
On Resistance Flatness
IOUT = 30 mA,
VIN = 2.2 V
3.3
3.0
IOUT = 30 mA,
VIN = 1.6 to 2.8 V
3.3
3.8
0
VDD
Ω
VIN
Switch Input Voltage Range
2.5 to 4.5
V
CON
MIC and J_MIC Switch ON
Capacitance
3.8
f = 1 MHz
60
pF
COFF
MIC and J_MIC Switch OFF
Capacitance
3.8
f = 1 MHz
35
pF
J_MIC
J_MICAudioV
Audio Voltage Range on J_MIC
Pin
2.5 to 4.5 DET = LOW
J_MICAudiof
Audio Frequency on J_MIC Pin
2.5 to 4.5 DET = LOW
J_MICRGND2
Detection Resistance to Ground
J_MICHYS
Hysteresis of J_MIC
J_MICVIH
Input High Voltage
0.3
J_MICVIL
Input Low Voltage
-0.5
1.0
V
0
3
V
20
20000
Hz
Ω
1250
60
mV
V
J_DET
J_DETAudioV
Audio Voltage Range on J_DET
Pin
2.5 to 4.5 DET = LOW
-1
1
V
J_DETAudiof
Audio Frequency on J_DET Pin
2.5 to 4.5 DET = LOW
20
20000
Hz
J_DETRGND
Detection Resistance to Ground
2.5 to 4.5 Audio Jack Inserted
0
500
kΩ
J_DETHYS
Hysteresis of J_DET
200
FSA8058 — Audio Jack Detection and Configuration Switch with Moisture Sensing
DC Electrical Characteristics
mV
J_DETVIH
Input High Voltage
0.7 ×
VDD
J_DETVIL
Input Low Voltage
-1.0
0.4 ×
VDD
VIH
Input High Voltage
0.7 ×
VIO
VIO
VIL
Input Low Voltage
VDD
V
V
Parallel I/O
0.3 ×
VIO
VOH
Output High Voltage
IOH = -100 µA
VOL
Output Low Voltage
IOL = +100 µA
0.8 ×
VIO
V
0.2 ×
VIO
Continued on the following page…
© 2012 Fairchild Semiconductor Corporation
FSA8058 • Rev. 1.0.0
www.fairchildsemi.com
5
All typical values are at TA=25°C unless otherwise specified.
Symbol
Parameter
VDD (V)
Condition
TA = -40 to +85°C
Min.
Typ.
Max.
Unit
Comparator
Comparator Threshold for SEND /
END Sensing
VCOMP_S/E
2.8 to 4.5 J_DET, EN = LOW
780
mV
Current
IOFF
IIN
Power-Off Leakage Current
Through Switch
0
MIC, J_MIC,
Ports VIN = 4.3 V
1
µA
Input Leakage Current
0
Inputs VIN = 4.3 V
1
µA
ICC-SLNA
Battery Supply Sleep Mode
Current No Accessory Attached
Static Current
2.5 to 4.5 During Sleep Mode
(EN = LOW)
1.5
3.0
µA
ICC-SLWA
Battery Supply Sleep Mode
Current with Accessory Attached
Active Current
2.5 to 4.4 (EN = LOW and/or
DET = HIGH)
20
25
µA
AC Electrical Characteristics
All typical values are for VCC=3.3 V at TA=25°C unless otherwise specified.
Symbol
Parameter
VDD (V)
Conditions
Typical
Unit
MIC Switch
THD
Total Harmonic Distortion
3.8
RT = 600 Ω, VSW =
0.5 VPP, f = 20 Hz to
20 kHz, VIN = 2.2 V
0.01
%
OIRR
Off Isolation
3.8
f = 20 kHz, RS = 32 Ω,
CL = 0 pF, RT = 32 Ω
-85
dB
3.8
CL = 5 pF, 20% to 80%,
-40°C to 85°C
20
ns
Parallel I/O
tR, tF
Output Edge Rates (DET, S/E)
tPOLL
On Time of MIC Switch for Sensing SEND /
END Button Press Oscillator Stable Time
2.5 to 4.5
1
ms
tWAIT
Period of MIC Switching Time for Sensing
SEND / END Button Press
2.5 to 4.5
10
ms
tDET_IN
Debounce Time after J_DET Changes State
from HIGH to LOW
2.5 to 4.5
100
ms
tDET_REM
Debounce Time after J_DET Changes State
from LOW to HIGH
2.5 to 4.5
1
ms
Debounce Time for Sensing SEND / END Key
Press / Release
2.5 to 4.5
30
ms
-80
dB
tKBK
FSA8058 — Audio Jack Detection and Configuration Switch with Moisture Sensing
DC Electrical Characteristics
Power
PSRR
Power Supply Rejection Ratio
© 2012 Fairchild Semiconductor Corporation
FSA8058 • Rev. 1.0.0
3.8
Power Supply Noise
300 mVPP, Measured
10/90%, f = 217 Hz
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6
1.40
0.10 C
A
B
2X
(9X)
1.70
0.563
0.663
1.80
1
PIN#1 IDENT
2.10
0.10 C
TOP VIEW
0.40
2X
(10X) 0.225
0.55 MAX.
0.10 C
RECOMMENDED
LAND PATTERN
(0.15)
1.45
0.08 C
SEATING C
PLANE
0.05
0.00
0.55
SIDE VIEW
0.40
1.85
0.35
(9X)
0.45
3
(10X) 0.225
6
DETAIL A
OPTIONAL MINIMIAL
TOE LAND PATTERN
0.40
1
NOTES:
PIN#1 IDENT
BOTTOM VIEW
0.55
0.45
45°
DETAIL A
SCALE : 2X
Figure 4.
Table 1.
A. PACKAGE DOES NOT CONFORM TO
ANY JEDEC STANDARD.
B. DIMENSIONS ARE IN MILLIMETERS.
0.15
(10X)
0.25
10
0.25
0.15
9X
0.45
0.10 C A B
0.05 C
C. DIMENSIONS AND TOLERANCES PER
ASME Y14.5M, 1994.
D. LAND PATTERN RECOMMENDATION IS
BASED ON FSC DESIGN ONLY.
PACKAGE
EDGE
E. DRAWING FILENAME: MKT-UMLP10Arev5.
F. FAIRCHILD SEMICONDUCTOR.
LEAD
OPTION 2
LEAD
OPTION 1
SCALE : 2X
SCALE : 2X
10-Lead, Quad Ultrathin MLP (UMLP), 1.4 X 1.8 mm Body
Nominal Values
JEDEC Symbol
Description
Nominal Values (mm)
A
Overall Height
0.5
A1
Package Standoff
0.072
A3
Lead Thickness
0.152
b
Lead Width
0.4
L
Lead Length
0.2
e
Lead Pitch
0.4
D
Body Length (Y)
1.8
E
Body Width (X)
1.4
FSA8058 — Audio Jack Detection and Configuration Switch with Moisture Sensing
Physical Dimensions
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/dwg/UM/UMLP10A.pdf.
© 2012 Fairchild Semiconductor Corporation
FSA8058 • Rev. 1.0.0
www.fairchildsemi.com
7
FSA8058 — Audio Jack Detection and Configuration Switch with Moisture Sensing
© 2012 Fairchild Semiconductor Corporation
FSA8058 • Rev. 1.0.0
www.fairchildsemi.com
8