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Document overview
- Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
- PDF pages: 8
Technical content
Features
- 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
Applications
- 3.5 mm and 2.5 mm Audio Jacks
- Cellular Phones, Smartphones
- MP3 and PMP Related Resources
- FSA8008A Demonstration Board
Figure 1. Mobile Phone Example
Figure 2. 10−Lead UMLP Pin Assignment (Through View) Table 1. PIN DESCRIPTIONS
0 Plugged
1 Unplugged
0 No key press
1 Key press
0 MIC / J_MIC switch open
1 MIC / J_MIC switch closed
- 0 = V OL or VIL; 1 = VOH or VIH
Figure 3. Functional Flow Diagram
- Stuck Send/End key function is only available if EN=H.
Table 2. STUCK SEND/END KEY Table 3. STATES DURING POWER GOOD AND OFF
Table 4. I/O STATES DURING DETECTION (Note 3)
1 X X 0 (no press) 0 (no press) 1 (3 Pole) 1 (3 Pole) 1
- State detected after initial plug−in.
Table 5. ABSOLUTE MAXIMUM RATINGS should not be assumed, damage may occur and reliability may be affected.
- The input and output negative ratings may be exceeded if the input and output diode current ratings are observed.
Table 6. RECOMMENDED OPERATING CONDITIONS the Recommended Operating Ranges limits may affect device reliability.
Table 7. DC ELECTRICAL CHARACTERISTICS All typical values are at TA = 25°C unless otherwise specified.
2.8 IOUT = 30 mA,
0 MIC and J_MIC
performance may not be indicated by the Electrical Characteristics if operated under different conditions.
www.onsemi.com Table 8. AC ELECTRICAL CHARACTERISTICS All typical values are for VCC = 3.3 V at TA = 25°C unless otherwise specified.
2.5 CL = 5 pF, 20% to 80% 19 ns
ORDERING INFORMATION
Part Number Operating Temperature Range Top Mark Package FSA8008AUMX −40 to +85°C KD 10−Lead, 1.4 x 1.8 x 0.55 mm, 0.4 mm Pitch, Ultrathin Molded Leadless Package (UMLP)
www.onsemi.com PACKAGE DIMENSIONS UQFN10 1.4x1.8, 0.4P CASE 523BC ISSUE O
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