ON Semiconductor FSA4485 User manual

USB Type-C Analog Audio Switch with Over Voltage Protection

FSA4485

PRODUCT SUMMARY

General Description

The FSA4485 is a high performance USB Type−C port multimedia switch to supports analog audio headsets. The FSA4485 allows sharing of the USB Type−C port to pass USB2.0 signals, analog audio, sideband use signals, and analog microphone signal. For enhanced audio performance the FSA4485 incorporates MOSFET gate drivers to support low resistance external analog ground switches. The FSA4485 features Over Voltage Protection on all connector facing pins as well as Over Current Protection for the analog ground switch.

Features

• VCC Range from 2.7 V to 5.5 V (Primary)

• OVP Function on Common Node Pins

• Over Current Protection for Analog Ground Switch

• Analog Audio Device Unplug Detection

• 16 V DC Tolerance on Connector Side Pins:

DP_R, DN_L, GBSUx, SBUx

• 20 V DC Tolerance on CC_IN

• High Performance Audio/USB SW:

♦ Audio SW, THD+N < −109 dB; 1 VRMS, 32  Load; ♦ USB SW, BW: 1 GHz

• 225 m (Typical) Sense to GSBUx on Resistance

• 78 m (Typical) SBUx to AGND on Resistance

• Programmable Gate Drive for Optional External SBUx to AGND

Switch

• 1.2 V Capable I

• Two I

2

C Addresses

2

C Interface

• Optional Normally Closed Configuration for SBU Data Switch to

Support Factory Test

• Moisture/Resistance Detection on DP_R, DN_L and SBUx

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WLCSP25

CASE 567YL

MARKING DIAGRAM

6F&K

&.&2&Z

1

6F = Alphanumeric Device Marking &K = Lot Run Code &2 = Alphabetical Year Code &Z = Assembly Plant Code

ORDERING INFORMATION

See detailed ordering and shipping information on page 3 of this data sheet.

Applications

• Mobile Phone

• Tablet

• Notebook PC

• Media Player

January, 2021 − Rev. 0

1 Publication Order Number:

FSA4485/D

Block Diagram

FSA4485

PRODUCT BLOCK DIAGRAM

Figure 1. Block Diagram

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Ordering Information

FSA4485

PART NUMBERING

Table 1. ORDERING INFORMATION

Part Number

FSA4485UCX −40 to +85°C

Pin Configuration

Operating Temperature Package Top Marking

25−Ball WLCSP, Non−JEDEC

2.16 × 2.16 mm, 0.4 mm Pitch

(Pb−Free)

6F

PRODUCT PIN ASSIGNMENTS

Figure 2. Pin Configuration

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FSA4485

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ББББББ ББББББ

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Pin Descriptions

PIN DESCRIPTIONS

Pin Name Description

A5

B5

D5

D4

E5

E4

C5

C4

A3

A2

C1

B2

B4

B3

E2

C3

D2

D1

E1

C2

D3

E3

B1

A1

A4

VCC

GND

DN_R

DN_L

DP

DN

R

L

SBU1

SBU2

MIC

AGND

GD1

GD2

SENSE

INT

CC_IN

GSBU1

GSBU2

DET

SCL1/SDA2

SDA1/SCL2

S2H

S1H

EN

Power Supply (2.7 to 5.5 V)

Device Ground

USB/Audio Common Connector

USB Data (Differential +)

USB Data (Differential −)

Audio − Right Channel

Audio − Left Channel

Sideband Use 1

Sideband Use 2

Microphone Signal

Audio Ground

External Gate Driver

Audio Ground Sense Output

I2C Interrupt Output, Active Low (Open Drain)

Audio Accessory Attach Detection Input

Audio Sense Path 1 to Headset Jack GND

Audio Sense Path 2 to Headset Jack GND

Attach Detect Output, Active Low (Open Drain)

I2C Clock/Data

I2C Data/Clock

Host Side Sideband use

Device Enable and Precondition, 3−state Input with internal pull−up/pull−down

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FSA4485

MAXIMUM RATINGS

Symbol Parameter Conditions Min Typ Max Unit

VCC Supply Voltage

VCC_IN CC Voltage CC_IN to GND −0.5

VSW_USB USB Switch Voltage (DP_R, DN_L) to GND −3.5

VSW_SBU SBU Switch Voltage (SBUx, GSBUx) to GND −0.5

VSW_HOST Host Side Switch Voltage (DP, DN, S1H, S2H, SENSE, MIC) to GND −0.5

VSW_Audio Host Side Audio Switch Voltage (L, R) to GND −3.5

VCNTRL Control Pin Voltage (SDA, SCL, EN, DET, INT) to GND −0.5

IIK DC Input Diode Current −50

ISW_USB USB Switch Current Between DP_R and DP or DN_L and DN

ISW_SBU SBU Switch Current (S1H, S2H, MIC) to SBUx

ISW_SENSE Sense Switch Current GSBUx to SENSE

ISW_AGND Analog Ground Current SBUx to AGND

ISW_Audio Audio Switch Current DP_R to R or DN_L to L −250

ESDHBM

ESDHBM_Con Connector Side Pins and Power Pins 3.5

ESDCDM Charged Device Model,

Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality should not be assumed, damage may occur and reliability may be affected.

Human Body Model, JEDEC: JS−001−2017

JEDEC: JS−002−2018

All Pins 2

−0.5 −

1

−

6.5 V

20 V

16 V

6.5 V

− mA

100 mA

50 mA

100 mA

500 mA

250 mA

− kV

kV

THERMAL PROPERTIES

Symbol Parameter Conditions Min Typ Max Unit

T

STG

T

A

1. Junction−to−ambient thermal resistance is a function of application and board layout. This data is measured with two−layer 2s2p boards in

accordance to JEDEC standard JESD51. Special attention must be paid not to exceed junction temperature T temperature T

Storage Temperature −65 150 °C

Operating Temperature −40 25 85 °C

at a given ambient

.

A

J(max)

OPERATING CONDITIONS

Symbol Parameter Conditions Min Typ Max Unit

VCC Supply Voltage 2.7 − 5.5 V

VCC_IN CC Voltage CC_IN to GND 0 − 5.5 V

VSW_USB USB Switch Voltage (DP_R, DN_L, DP, DN) to GND 0 − 3.6 V

VSW_SBU SBU Switch Voltage (SBUx, GSBUx) to GND 0 − 3.6 V

VSW_HOST Host Side Switch Voltage (DP, DN, S1H, S2H, SENSE, MIC) to GND 0 − 3.6 V

VSW_Audio Host Side Audio Switch Voltage (DN_L, DP_R, L, R) to GND −3 − 3 V

VCNTRL

Functional operation above the stresses listed in the Recommended Operating Ranges is not implied. Extended exposure to stresses beyond the Recommended Operating Ranges limits may affect device reliability.

Control Input Voltage

(EN, SCL1/SDA2, SDA1/SCL2)

VCC

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FSA4485

ELECTRICAL SPECIFICATION TABLE

ELECTRICAL SPECIFICATIONS

(Minimum and maximum values are at VCC = 2.7 V to 5.5 V and T

= 25°C, VCC = 3.3 V)

T

A

Symbol Parameter Conditions Min Typ Max Unit

CURRENT

ICC

ICC_AUDIO Audio Supply Current

ICCZ

ICCZ_H

USB/AUDIO COMMON PINS

IOZ

IOFF

VOV_TRIP Input OVP Lockout Rising Edge of DP_R, DN_L, SBUx,

VOV_HYS Input OVP Hysteresis DP_R, DN_L, SBUx, GSBUx − 0.3 − V

USB SWITCH

ION_USB

IOZ_USB USB Host Side Off Leakage Current DN, DP = 0 V to 3.6 V −3 3

IOFF_USB

RON_USB USB Switch On Resistance ISW = 8 mA, VSW = 0.4 V 3

AUDIO SWITCH

ION_AUDIO

IOFF_AUDIO

RON_AUDIO Audio Switch On Resistance

RON_FLAT

RSHUNT

SBU COMMON PINS

IOZ_SBU

IOFF_SBU

SBU DATA SWITCH

ION_SxH

IOZ_SxH Off Leakage Current (S1H, S2H) SxH =0 V to 3.6 V −1 1

IOFF_SxH

RON_SxH

MIC SWITCH

ION_MIC

IOZ_MIC Off Leakage Current (MIC) MIC = 0 V to 3.6 V −1 1

Supply Current

Quiescent Current, Software Disabled

Quiescent Current, Hardware Disable

USB Connector Side Off Leakage Current

USB Connector Side Power Off Leakage Current

USB Switch ON Leakage Current

USB Host Side Power Off Leakage Current

ON Leakage Current of Audio Switch

Power Off Leakage Current of Audio Switch L, R

Audio Switch On Resistance Flatness †

Pull Down Resistor on R/L Pin when Audio Switch is Off

Off Leakage Current (SBU1, SBU2) SBUx = 0 V to 3.6 V −3 3

Power Off Leakage Current (SBU1, SBU2)

ON Leakage Current of SBU Switch SBUx = 0 V to 3.6 V, SxH = Float −3 3

Power Off Leakage Current (S1H, S2H)

SBU Switch On Resistance to (S1H, S2H)

ON Leakage Current of MIC Switch SBUx = 0 V to 3.6 V, MIC = Float −3 3

= −40°C to +85°C unless otherwise noted. Typical values are at

A

USB switches on, SBUx to SBUx_H switches on

Audio switches closed, MIC switch closed and

Audio GND switch closed

04H’b7 = 0, EN = Low or Float

EN = High 10

DP_R, DN_L = 0 V to 3.6 V −3 3

DP_R, DN_L = 0 V to 3.6 V, VCC = 0 V −3 3

GSBUx

DN_L, DP_R = 0 V to 3.6 V, DP, DN, R, L = Float

DN, DP = 0 V to 3.6 V, VCC = 0 V −3 3

DN_L, DP_R = −3 V to 3.0 V, DP, DN, R, L = Float

L, R = 0 V to 3 V; DP_R, DN_L = Float, VCC = 0 V

ISW = 100 mA, VSW = −3 V to 3 V

VSW = −3.0 V to +3.0 V 10

L = R = 3 V 6 10 14

SBUx = 0 V to 3.6 V, VCC = 0 V −3 3

SxH =0 V to 3.6 V, VCC = 0 V −1 1

VSW = 0 V to 3.6 V, ISW = 20 mA 3

4.7 5 5.2 V

−3 3

−6 6

−1 1

65

A

65

A

5

A



A

1



m

k

A



A

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FSA4485

ELECTRICAL SPECIFICATIONS (continued)

(Minimum and maximum values are at VCC = 2.7 V to 5.5 V and T T

= 25°C, VCC = 3.3 V)

A

MIC SWITCH

IOFF_MIC

RON_MIC SBU Switch On Resistance to (MIC) VSW = 0 V to 3.6 V, ISW = 20 mA 3

AGND SWITCH

RON_AGND

IOC_TRIP Input OCP Lockout SBUx to AGND 04h’b0 = 1, 07h = xx010xxxb or

SENSE SWITCH

ION_SENSE

IOZ_SENSE Off Leakage Current of SENSE Sense = 0 V to 1.0 V −3 3

IOZ_GSBU Off Leakage Current of GSBUx GSBUx = 0 V to 3.6 V −3 3

IOFF_SENSE

IOFF_GSBU

RON_SENSE Sense Switch On Resistance IOUT = 100 mA, VSW =1 V 250 400

CC_IN PIN

VTH_L_CC

VTH_H_CC Input High Threshold 1.5 V

IIN_CC CC_IN Input Leakage Current CC_IN = 0 V to 5.5 V 1

EN PIN

VIH_EN

VIL_EN EN Input Voltage Low 0.5 V

RFLOAT_EN Resistance from EN to GND 900

IIN_EN EN Input Leakage Current EN = 0 V to 5.5 V 10

DET & INT PIN

VOL

I2C PINS

VIL_I2C

VIH_I2C High Level Input Voltage 0.84 V

IIN_I2C Input Current SCL1/SDA2,

VOL_I2C Low Level Output Voltage IOL = 2 mA 0.3 V

VOH_I2C Low Level Output Current VOL_I2C = 0.2 V 10 mA

GATE DRIVE

I_GATE

V_GATE Gate Drive Voltage (GD1, GD2) † ILoad = 200 nA 6 V

R_GATE Gate Drive Discharge Resistance † 1.0

AUDIO SWITCH

tDELAY_Audio

tDELAY_Audio_Slow Audio Switch Turn On Delay with Slow

Power Off Leakage Current (MIC) MIC = 0 V to 3.6 V, VCC = 0 V −1 1

SBUx Switch On Resistance to AGND

ON Leakage Current of SENSE switch On GSBUx = 0 V to 1.0 V,

Power Off Leakage Current of SENSE

Power Off Leakage Current of GSBUx

Input Low Threshold 1.2 V

EN Input Voltage High 1.1 V

Output Low Voltage IOUT = 2 mA 0.4 V

Low Level Input Voltage 0.36 V

Gate Drive Current (GD1, GD2) † V_GATE = 3 V 2

Audio Switch Turn On Delay Time †

Turn On †

= −40°C to +85°C unless otherwise noted. Typical values are at

A

ISW = 100 mA on SBUx 78 125

xxxxx010b

Off GSBUx = 2 V, Sense = Float

Sense = 0 V to 1.0 V, VCC = 0 V −3 3

GSBUx = 0 V to 3.6 V, VCC = 0 V −3 3

SDA1/SCL2 = 0 V to 3.6 V

DP_R = DN_L = 1 V, RL = 32 , SLOW_TURN_ON = 0b

DP_R = DN_L = 1 V, RL = 32 , SLOW_TURN_ON = 1b

0.75 1.5 3.0 A

−2 2

100

150

UnitMaxTypMinConditionsParameterSymbol

A



m

A

m

A

K

A

M

s

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FSA4485

ELECTRICAL SPECIFICATIONS (continued)

(Minimum and maximum values are at VCC = 2.7 V to 5.5 V and T T

= 25°C, VCC = 3.3 V)

A

AUDIO SWITCH

tRISE_Audio

tRISE_Audio_Slow Audio Switch Turn On Rise Time with Slow

tOFF_Audio Audio Switch Turn Off Time †

XTALK_Audio Crosstalk between Left and Right †

BW_Audio −3dB Bandwidth †

OIRR_Audio Off Isolation †

THD+N_600 Total Harmonic Distortion + Noise

THD+N_32 Total Harmonic Distortion + Noise

THD+N_16 Total Harmonic Distortion + Noise

PSRR_Audio Power Supply Rejection Ratio to Audio † Supply Noise = 300mVpp, f = 217 Hz,

USB SWITCH

tON_USB

tOFF_USB

BW_USB

IL_USB Insetrion Loss †

OIRR_USB

tOVP_USB

MIC/AUDIO GROUND SWITCH

tDELAY_MIC

tDELAY_MIC_Slow MIC Switch Turn On Delay with Slow Turn

tRISE_MIC MIC Switch Turn On Rising Time with Slow

tRISE_MIC_Slow MIC Switch Turn On Rising Time with Slow

tDELAY_AGND AGND Switch Turn On Time with Slow

tDELAY_AGND_Slow AGND Switch Turn On Time with Slow

tRISE_AGND AGND Switch Turn On Rise Time with

Audio Switch Turn On Rise Time †

Turn On †

Performance with A−weighting Filter †

USB Switch Turn−on Time † DP_R = DN_L = 1.5 V, RL = 50 

USB Switch Turn −off Time † DP_R = DN_L = 1.5 V, RL = 50 

−3 dB Differential Bandwidth † RL = 50 

Off Isolation between DP, DN and Common Node Pins †

DP_R and DN_L pins OVP Response Time †

MIC Switch Turn On Delay Time with Slow Turn On Disabled †

On Enabled †

Turn On Disabled †

Turn On Enabled †

Turn On Disabled †

Turn On Enabled †

Slow Turn On Disabled †

= −40°C to +85°C unless otherwise noted. Typical values are at

A

DP_R = DN_L = 1 V, RL = 32 , SLOW_TURN_ON = 0b

DP_R = DN_L = 1 V, RL = 32 , SLOW_TURN_ON = 1b

DP_R = DN_L = 1 V, RL = 32 

f = 1 kHz, RL = 50  to GND, VSW = 1 VRMS

VSW = 200 mV, RL = 50 

F = 1 kHz, RL = 50 , CL = 0 pF, VSW = 1 VRMS

RL = 600 , f = 20 Hz~20 kHz, VSW = 2 VRMS

RL = 32 , f = 20 Hz~20 kHz, VSW = 1 VRMS

RL = 16 , f = 20 Hz~20 kHz, VSW = 0.5 VRMS

RL = 50 , Audio Switch Closed

RL = 50 , f = 720 MHz

f = 1 kHz, RL = 50 , CL = 0 pF, VSW = 1 VRMS

Rising edge of DP_R or DN_L ≥ 4.8 V to falling edge of DP or DN or L or R ≤ 4.8 V, RL on DP or DN = 1 k

SBUx = 1 V, RL = 50 , SLOW_TURN_ON = 0b

SBUx = 1 V, RL = 50 , SLOW_TURN_ON = 1b

SBUx = 1 V, RL = 50 , SLOW_TURN_ON = 0b

SBUx = 1 V, RL = 50 , SLOW_TURN_ON = 1b

SBUx pulled up to 0.5 V by 16 , AGND connect to GND, SLOW_TURN_ON = 0b

SBUx pulled up to 0.5 V by 16 , AGND connect to GND, SLOW_TURN_ON = 1b

SBUx pulled up to 0.5 V by 16 , AGND connect to GND, SLOW−TURN_ON = 0b

UnitMaxTypMinConditionsParameterSymbol

26

180

15

−100 dB

550 MHz

−100 dB

−109 dB

−108 dB

−70 dB

33

15

1 GHz

−2.2 dB

-100

600 ns

90

200

40

300

660

1100

270

s

dB

s

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FSA4485

ELECTRICAL SPECIFICATIONS (continued)

(Minimum and maximum values are at VCC = 2.7 V to 5.5 V and T T

= 25°C, VCC = 3.3 V)

A

MIC/AUDIO GROUND SWITCH

tRISE_AGND_Slow

tOFF_MIC MIC Switch Turn Off Time †

tOFF_AGND AGND Switch Turn Off Time † SBUx: Vsource = 2.5 V,

BW MIC Switch Bandwidth †

tOC_DEB SBUx to AGND Over Current Debounce

SBU SWITCH

tON_SBU

tOFF_SBU SBUx_H Switch Turn Off Time †

BW_SBU Bandwidth †

tOVP_SBU SBUx Pins OVP Response Time †

SENSE SWITCH

tDELAY_SENSE

tDELAY_SENSE_Slow Sense Switch Turn On Delay with Slow

tRISE_SENSE Sense Switch Turn On Rise Time with

tRISE_SENSE_Slow Sense Switch Turn On Rise Time with

tOFF_SENSE Sense Switch Turn Off Time †

tOVP_SENSE GSBUx Pins OVP Response Time † Rising edge of GSBUx ≥ 4.8 V to

BW_SENSE Bandwidth †

DET DELAY

tDELAY_DET

I2C SPECIFICATIONS

fSCL

tHD; STA

tLOW Low Period of I2C_SCL Clock † 1.3

tHIGH High Period of I2C_SCL Clock † 0.6

tSU; STA

tHD; DAT Data Hold Time † 0 0.9

tSU; DAT

tr

tf

tSU; STO

AGND Switch Turn On Rise Time with Slow Turn On Enabled †

Time †

SBUx_H Switch Turn On Time †

Sense Switch Turn On Delay with Slow Turn On Disabled †

Turn On Enabled †

Slow Turn On Disabled †

Slow Turn On Enabled †

DET Response Delay † Transition from High−Z to 0 V 2.5

I2C_SCL Clock Frequency 400 kHz

Hold Time (Repeated) START Condition †

Set−up Time for Repeated START Condition †

Data Set−up Time †

Rise Time of I2C_SDA and I2C_SCL Signals †

Fall Time of I2C_SDA and I2C_SCL Signals †

Set−up Time for STOP Condition †

= −40°C to +85°C unless otherwise noted. Typical values are at

A

SBUx pulled up to 0.5 V by 16 , AGND connect to GND, SLOW−TURN_ON = 1b

SBUx = 2.5 V, RL = 50 

clamp to 10 mA

RL = 50 

SBUx = 2.5 V, RL = 50 

RL = 50 

Rising edge of SBUx ≥ 4.8 V to falling edge of SxH ≤ 4.8 V, RL on SxH = 1 k

GSBUx = 1 V, RL = 50 , SLOW_TURN_ON = 0b

GSBUx = 1 V, RL = 50 , SLOW_TURN_ON = 1b

GSBUx = 1 V, RL = 50 , SLOW_TURN_ON = 0b

GSBUx = 1 V, RL = 50 , SLOW_TURN_ON = 1b

GSBUx = 1 V, RL = 50 

falling edge of SENSE ≤ 4.8 V, RL on SENSE = 1 k

RL = 50 

0.1Cb

UnitMaxTypMinConditionsParameterSymbol

720

15

35 MHz

500

75

15

35 MHz

250 ns

150

110

15

250 ns

108 MHz

0.6

100 ns

20 +

0.6

300 ns

300 sn

s

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