Datasheet

ManualsBrandsFAIRCHILD SEMICONDUCTOR ManualsLinear ICsLinear IC - Custom audio Communication systems, Consumer audio Logic UFQFN 10

March 2013

FSA8008 / FSA8008A • Rev. 1.0.5

FSA8008 / FSA8008A – Audio Jack Detection and Configuration Switch

FSA8008/FSA8008A

Audio Jack Detection and Configuration Switch

Features

Detection

Accessory Plug-In

3- or 4-Pole Audio Jack

Send/End Key Pressed

Functionality

FSA8008

FSA8008A

Decreased Timing

for Sensitive

Send/End Keys

Switch Type MIC

2.5 to 4.4 V

1.6 to V

THD (MIC) 0.01% Typical

ESD (Air Gap) 15 kV

Operating Temperature -40°C to 85°C

Package

10-Lead UMLP

1.4x1.8x0.5 mm, 0.4 mm Pitch

Top Mark

FSA8008 KC

FSA8008A KD

Ordering Information

FSA8008UMX

FSA8008AUMX

Applications

 3.5 mm and 2.5 mm Audio Jacks

 Cellular Phones, Smartphones

 MP3 and PMP

Description

The FSA8008/FSA8008A is an audio jack detector and

switch for 3- or 4-pole accessories. In addition to detection,

the FSA8008/A features an integrated MIC switch that allows

the processor to configure the audio jack. 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.

 Determines 3- or 4-Pole Audio Jacks

 Removes Audio Jack Pop-n-Click Caused by MIC Bias

 Detects Audio Jack Accessories:

- Standard Headphones

- Headsets with MIC

- Send / End Button Presses

 Integrates a MIC Switch for 4-Pole Configuration

Related Resources

 FSA8008/FSA8008A Demonstration Board

 For samples and questions, please contact:

Analog.Switch@fairchildsemi.com

Typical Application

Figure 1. Mobile Phone Example

Summary of content (10 pages)

PAGE 1
FSA8008/FSA8008A Audio Jack Detection and Configuration Switch Description Features Accessory Plug-In 3- or 4-Pole Audio Jack Send/End Key Pressed FSA8008 Decreased Timing Functionality FSA8008A for Sensitive Send/End Keys Switch Type MIC VDD 2.5 to 4.4 V VIO 1.6 to VDD THD (MIC) 0.01% Typical ESD (Air Gap) 15 kV Operating Temperature -40°C to 85°C 10-Lead UMLP Package 1.4x1.8x0.5 mm, 0.
PAGE 2
FSA8008 / FSA8008A – Audio Jack Detection and Configuration Switch Pin Configuration EN 3 JPOLE 4 VDD 5 DET VIO 2 1 6 7 S/E MIC 10 J_DET 9 GND 8 J_MIC Figure 2.
PAGE 3
Power Up (POR GOOD) Is there an accessory plugged into the audio jack? NO YES 3-Pole Configuration 3-Pole •DET = 0 •JPOLE = 1 •S/E = 0 Is the accessory 3 or 4 pole? YES Is there an accessory plugged into the audio jack? 4-Pole Is the accessory a 3 or 4 pole? 4-Pole Configuration •DET = 0 •JPOLE = 0 •S/E = 0 Configure MIC Switch •EN = Set by processor NO Stuck Send/End (2) Key Check Is Send/END key pressed? NO YES NO Key Press •S/E = 1 No Key Press •S/E = 0 YES Detached Accessory NO Set
PAGE 4
State Description VDD VIO Active 1 1 0 0 1 0 0 1 OFF DET EN JPOLE S/E J-DET MIC Switch H (unplugged) Open Active 1 (unplugged) 3-State 1 (3 Pole) 0 (No Press) Table 3.
PAGE 5
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 VDD & VIO Parameter Min. Max. Units Supply Voltage from Battery -0.5 6.
PAGE 6
All typical values are at TA=25°C unless otherwise specified. MIC Switch Symbol Parameter VDD (V) Conditions TA = -40 to +85°C Min. 2.5 RON MIC Switch On Resistance IOUT = 30 mA, VIN = 2.0 V 2.8 3.8 IOUT = 30 mA, VIN = 1.6, 2.0, 2.5 2.5 RFLAT(ON) On Resistance Flatness 2.8 Max. 0.9 2.9 0.8 2.5 0.6 2.0 Units Ω 1.50 0.70 IOUT = 30 mA, VIN = 1.6, 2.0, 2.8 3.8 Typ. 0.25 VIN Switch Input Voltage Range 2.5 to 4.4 0 VDD V CON MIC and J_MIC Switch ON Capacitance 3.
PAGE 7
All typical values are at TA=25°C unless otherwise specified. Comparator Symbol VCOMP Parameter Comparator Threshold for SEND/END Sensing VDD (V) 2.5-3.8 Conditions TA = -40 to +85°C Min. J_DET, EN = L Typ. Max. 200 Units mV Current Symbol IOFF IIN Parameter Power Off Leakage Current Through Switch Input Leakage Current VDD (V) Conditions TA = -40 to +85°C Min. Typ. Max. Units 0 MIC and J_MIC Ports VIN = 4.4 V 1.5 µA 0 to 4.4 Inputs 0 = 4.
PAGE 8
All typical values are for VCC=3.3 V at TA=25°C unless otherwise specified. MIC Switch Symbol Parameter VDD (V) Conditions TA = -40 to +85°C Min. Typ. Max. Unit THD Total Harmonic Distortion 3.8 RT = 600 Ω, VSW = 0.5 VPP, f = 20 Hz to 20 kHz, VIN = 2.0 V 0.01 % OIRR Off Isolation 3.8 f = 20 kHz, RS = 32 Ω, CL = 0 pF, RT = 32 Ω -90 dB Parallel I/O Symbol Parameter VDD (V) 2.5 Conditions TA = -40 to +85°C Min. Typ. Max.
PAGE 9
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 0.08 C RECOMMENDED LAND PATTERN (0.15) 1.45 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 0.10 C A B 0.05 C DETAIL A SCALE : 2X C. DIMENSIONS AND TOLERANCES PER ASME Y14.5M, 1994. D.
PAGE 10
FSA8008 / FSA8008A – Audio Jack Detection and Configuration Switch © 2011 Fairchild Semiconductor Corporation FSA8008 / FSA8008A • Rev. 1.0.5 www.fairchildsemi.