DATASHEET

ISL54400, ISL54401, ISL54402
SIGNS
DED FOR NEW DE
NOT RECOMMEN
T
EN
NDED REPLACEM
Sheet
July 12, 2006
COMME
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1-888-INTERSIL or
Low Voltage, Dual SPDT, USB/Audio
Switches with Negative Signal Capability
FN6240.3
Features
• Low Distortion Negative Signal Capability
The Intersil ISL54400, ISL54401, ISL54402 dual SPDT
(Single Pole/Double Throw) switches combine low distortion
audio and accurate USB 2.0 full speed data signal switching
in the same low voltage device. When operated with a 2.5V to
3.6V single supply these analog switches allow audio signal
swings below-ground, allowing the use of a common USB and
audio headphone connector in Personal Media Players and
other portable battery powered devices.
The ISL54400 and ISL54401 incorporate circuitry for
detection of the USB VBUS voltage, which is used to switch
between the audio and USB signal source in the portable
device. In addition, the ISL54400 includes circuitry for
generation of a VTERM voltage of 3.3V for use with USB
speed setting pull-up resistor.
• Detection of VBUS Voltage on USB Cable (ISL54400 and
ISL54401)
• Generation of VTERM Voltage for USB D+/D- Pull-up
Resistor (ISL54400)
• Low Distortion Headphone Audio Signals
- THD+N at 12mW into 32Load . . . . . . . . . . . <0.007%
• Cross-talk (20Hz to 20kHz) . . . . . . . . . . . . . . . . . . -110dB
• 1.8V Logic Compatible (ISL54402)
• Single Supply Operation (VDD)
- ISL54400 and ISL54401 . . . . . . . . . . . . . . 2.5V to 3.6V
- ISL54402 . . . . . . . . . . . . . . . . . . . . . . . . . . 1.8V to 5.5V
• Available in Ultra-thin QFN and TDFN Packages
The ISL54400, ISL54401, ISL54402 are available in 10 Ld
3mm x 3mm TDFN and 10 Ld tiny 2.1mm x 1.6mm ultra-thin
TQFN packages. They operate over a temperature range of
-40 to +85°C.
• Pb-Free Plus Anneal Available (RoHS Compliant)
Applications
• MP3 and other Personal Media Players
Related Literature
• Cellular/Mobile Phones
• Application Note AN1255 “ISL5440XEVAL1Z Evaluation
Board User’s Manual”
• PDA’s
• USB Switching
• Technical Brief TB363 “Guidelines for Handling and
Processing Moisture Sensitive Surface Mount Devices
(SMDs)”
• Audio/USB Switching
• Application Note AN557 “Recommended Test Procedures
for Analog Switches”
Application Block Diagram
VDD
VTERM
ISL54400
USB/HEADPHONE JACK
VBUS
D-
D-/L
D+
USB
FULL-SPEED
TRANSCEIVER
L
D+/R
R
CODEC
GND
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Copyright Intersil Americas LLC 2006. All Rights Reserved
Intersil (and design) and XDCP are trademarks owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.
ISL54400, ISL54401, ISL54402
Pinouts
(Note 1)
ISL54400 (TDFN, TQFN)
TOP VIEW
VTERM
10
VDD
VBUS
POWER/LOGIC
CONTROL
1
10
5.3k
2
VTERM
VDD
9
D-
8
D+
7
L
D-/L
6
R
D+/R
2M
D-/L
3
D +/R
4
GND
5
VBUS
5.3k
1
POWER/LOGIC
CONTROL
2
2M
3
D-
8
D+
7
L
50k
50k
50k
9
6
4
R
50k
5
GND
ISL54401 (TDFN, TQFN)
TOP VIEW
N.C,
10
VDD
1
VBUS
2
POWER/LOGIC
CONTROL
10
N.C.
9
D-
2M
VDD
VBUS
D-/L
3
8
D+
D +/R
4
7
L
GND
5
6
R
D-/L
POWER/LOGIC
CONTROL
1
2
2M
3
9
D-
8
D+
7
L
50k
50k
D+/R
6
4
R
50k
50k
5
GND
ISL54402 (TDFN, TQFN)
TOP VIEW
IN1
10
VDD
IN2
1
LOGIC
CONTROL
10
IN1
2
9
NO1
COM1
3
8
NO2
COM2
4
7
NC1
GND
5
6
NC2
50k
VDD
1
IN2
2
COM1
3
LOGIC
CONTROL
9
NO1
8
NO2
7
NC1
50k
COM2
6
4
50k
NC2
50k
5
GND
NOTE:
1. ISL54400, ISL54401 Switches Shown for VBUS not present (or idle). ISL54402 Switches Shown for Logic “0” Inputs.
2
FN6240.3
July 12, 2006
ISL54400, ISL54401, ISL54402
Truth Table
ISL54401
VBUS
L, R
D+, D-
0
ON
OFF
1
OFF
ON
Logic “0” when VDD + 0.2V, Logic “1” when  VDD + 0.8V
Truth Table
ISL54400
VDD
VBUS
L, R
D+, D-
VTERM
0
0
ON
OFF
Open
0
1
OFF
ON
Open
1
0
ON
OFF
Open
1
1
OFF
ON
3.3V to 4.0V
VDD: Logic “0” when < 2.4V, Logic “1” when  2.5V
VBUS: Logic “0” when  VDD + 0.2V, Logic “1” when  VDD + 0.8V
Truth Table
ISL54402
IN
NCx
NOx
0
ON
OFF
1
OFF
ON
Logic “0” 0.5V. Logic “1” 1.4V, with VDD between 2.7V and 3.6V
Pin Descriptions
ISL54400
ISL54401
ISL54402
NO.
NAME
FUNCTION
NAME
FUNCTION
NAME
1
VDD
Power Supply (Audio Switches)
Control Input for VTERM
VDD
Power Supply (Audio Switches)
VDD
System Power Supply Input
2
VBUS
Digital Control Input
Power Supply (USB Switches)
VBUS
Digital Control Input
Power Supply (USB Switches)
IN2
Digital Control Input
3
D-/L
Voice and Data Common Pin
D-/L
Voice and Data Common Pin
COM1
Common Pin
4
D+/R
Voice and Data Common Pin
D+/R
Voice and Data Common Pin
COM2
Common Pin
5
GND
Ground Connection
GND
Ground Connection
GND
Ground Connection
6
R
Audio Right Input
R
Audio Right Input
NC2
Normally Closed Pin
7
L
Audio Left Input
L
Audio Left Input
NC1
Normallly Closed Pin
8
D+
USB Differential Input
D+
USB Differential Input
NO2
Normally Open Pin
9
D-
USB Differential Input
D-
USB Differential Input
NO1
Normallly Open Pin
10
VTERM
No Connect
IN1
Digital Control Input
USB VTERM Voltage, Outputs
3.3V to 4.0V when VBUS = 4.4V
to 5.25V and VDD = logic “1” and
connected to Upstream USB
Termination.
3
N.C.
FUNCTION
FN6240.3
July 12, 2006
ISL54400, ISL54401, ISL54402
Ordering Information
PART NUMBER
(Note)
BRAND
TEMP. RANGE
(°C)
PACKAGE
(Pb-Free)
PKG. DWG. #
ISL54400IRZ
400Z
-40 to 85
10 Ld 3x3 Thin DFN
L10.3x3A
ISL54401IRZ
401Z
-40 to 85
10 Ld 3x3 Thin DFN
L10.3x3A
ISL54402IRZ
402Z
-40 to 85
10 Ld 3x3 Thin DFN
L10.3x3A
ISL54400IRZ-T
400Z
-40 to 85
10 Ld 3x3 Thin DFN Tape and Reel
L10.3x3A
ISL54401IRZ-T
401Z
-40 to 85
10 Ld 3x3 Thin DFN Tape and Reel
L10.3x3A
ISL54402IRZ-T
402Z
-40 to 85
10 Ld 3x3 Thin DFN Tape and Reel
L10.3x3A
ISL54400IRUZ-T
FA
-40 to 85
10 Ld 2.1 x 1.6mm TQFN Tape and Reel
L10.2.1x1.6A
ISL54401IRUZ-T
FB
-40 to 85
10 Ld 2.1 x 1.6mm TQFN Tape and Reel
L10.2.1x1.6A
ISL54402IRUZ-T
FC
-40 to 85
10 Ld 2.1 x 1.6mm TQFN Tape and Reel
L10.2.1x1.6A
ISL54400EVAL1Z
-
-40 to 85
ISL54400 Evaluation Kit
-
ISL54401EVAL1Z
-
-40 to 85
ISL54401 Evaluation Kit
-
ISL54402EVAL1Z
-
-40 to 85
ISL54402 Evaluation Kit
-
NOTE: Intersil Pb-free plus anneal products employ special Pb-free material sets; molding compounds/die attach materials and 100% matte tin plate
or NiPdAu termination finish, which are RoHS compliant and compatible with both SnPb and Pb-free soldering operations. Intersil Pb-free products
are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.
4
FN6240.3
July 12, 2006
ISL54400, ISL54401, ISL54402
Absolute Maximum Ratings
Thermal Information
VDD to GND. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to 6.0V
VBUS to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to 6.0V
Input Voltages
NOx, NCx, L, R (Note 2). . . . . . . . . . . . . . . - 2V to ((VDD) + 0.3V)
D+, D- (Note 2). . . . . . . . . . . . . . . . . . . . . -2V to ((VBUS) + 0.3V)
INx (Note 2) . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to ((VDD) + 0.3V)
Output Voltages (ISL54400 and ISL54401)
D-/L, D+/R (Note 2) Audio Mode . . . . . . . . -2V to ((VDD) + 0.3V)
D-/L, D+/R (Note 2) USB Mode . . . . . . . . -2V to ((VBUS) + 0.3V)
Output Voltages (ISL54402)
COMx (Note 2) . . . . . . . . . . . . . . . . . . . . . . -2V to ((VDD) + 0.3V)
Continuous Current (L, R, NCx, or COMx) . . . . . . . . . . . . . 300mA
Peak Current (L, R, NCx, or COMx)
(Pulsed 1ms, 10% Duty Cycle, Max) . . . . . . . . . . . . . . . . 500mA
Continuous Current (D+, D-, NOx). . . . . . . . . . . . . . . . . . . . . 40mA
Peak Current (D+, D-, NOx)
(Pulsed 1ms, 10% Duty Cycle, Max) . . . . . . . . . . . . . . . . 100mA
ESD Rating:
HBM COMx, D-/L, D+/R, VBUS . . . . . . . . . . . . . . . . . . . . . . .>4kV
HBM All Other Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .>4kV
MM COMx, D-/L, D+/R, VBUS . . . . . . . . . . . . . . . . . . . . . . .>500V
MM All Other Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .>300V
CDM (TDFN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .>1kV
Thermal Resistance (Typical, Note 3)
JA (°C/W)
10 Ld 3x3 TDFN Package . . . . . . . . . . . . . . . . . . . .
80
10 Ld QFN Package . . . . . . . . . . . . . . . . . . . . . . .
96
Maximum Junction Temperature (Plastic Package). . . . . . . . 150°C
Maximum Storage Temperature Range . . . . . . . . . . . . . -65°C to 150°C
Operating Conditions
Temperature Range
ISL5440XIR and ISL5440XIRU . . . . . . . . . . . . . . . . . -40°C to 85°C
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the
device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
NOTES:
2. Signals on D+, D-, L, R, D-/L, D+/R, VBUS, NOx, NCx, COMx, INx, exceeding VDD or GND by specified amount are clamped. Limit forward
current through clamp to maximum current ratings.
3. JA is measured with the component mounted on a high effective thermal conductivity test board in free air. See Tech Brief TB379 for details.
Electrical Specifications - 2.7V to 5.5V Supply Test Conditions: VDD = +3.0V, GND = 0V, VBUSH = 3.8V, VBUSL = 3.2V,
VINH = 1.4V, VINL = 0.5V (Notes 4, 6), Unless Otherwise Specified
TEMP
(°C)
(NOTE 5)
MIN
TYP
Analog Signal Range, VANALOG
Full
-1.5
-
1.5
V
RON Matching Between Channels, VDD = 3.0V, VBUS = 3.2V or VIN = 0.5V, ICOM = 40mA, VL
RON
or VR or VNCx = Voltage at max RON over signal range of
-0.85V to 0.85V, (Note 9)
25
-
0.02
0.12

Full
-
-
0.15

RON Flatness, RFLAT(ON)
25
-
0.002
0.08

Full
-
-
0.09

25
30
50
70
k
Full
-1.5
-
VBUS
V
25
-
5
6

Full
-
-
6.5

25
-
0.2
0.4

Full
-
-
0.45

PARAMETER
TEST CONDITIONS
(NOTE 5)
MAX
UNITS
ANALOG SWITCH CHARACTERISTICS
Audio Switches (L, R, NC1, NC2)
VDD = 3.0V, VBUS = 3.2V or VIN = 0.5V, ICOM = 40mA,
VL or VR or VNCx = -0.85V to 0.85V, (Note 7)
VDD = 3.6V, VBUS = 0V or VIN = 0.5V, VD-/L or VD+/R or
VCOM = -0.85V, 0.85V, VL or VR or VNCx = -0.85V, 0.85V,
VD+ and VD- = floating, Measure current through the
discharge pull-down resistor and calculate resistance
value.
Discharge Pull-down Resistance,
RL, RR
USB Switches (D+, D-, NO1, NO2)
Analog Signal Range, VANALOG
ON Resistance, RON , (ISL54400
and ISL54401 Only)
VDD = 3.6V, VBUS = 4.4V, ICOM = 40mA, VD+ or VD- = 0V
to VBUS, (See Figure 3)
RON Matching Between Channels, VDD = 3.6V, VBUS = 4.4V, ICOM = 40mA, VD+ or
RON , (ISL54400 and ISL54401 VD- = Voltage at max RON, (Note 9)
Only)
5
FN6240.3
July 12, 2006
ISL54400, ISL54401, ISL54402
Electrical Specifications - 2.7V to 5.5V Supply Test Conditions: VDD = +3.0V, GND = 0V, VBUSH = 3.8V, VBUSL = 3.2V,
VINH = 1.4V, VINL = 0.5V (Notes 4, 6), Unless Otherwise Specified (Continued)
TEMP
(°C)
(NOTE 5)
MIN
TYP
25
-
0.8
1.9

Full
-
-
2.5

25
-
7.5
9

Full
-
-
9.5

25
-
0.2
0.4

Full
-
-
0.45

25
-
0.8
1.9

Full
-
-
2.5

25
-5
1.5
5
A
Full
-15
-
15
A
25
-30
5
30
A
Full
-35
-
35
A
25
-
40
-
ns
Full
-
60
-
ns
25
-
20
-
ns
Full
-
40
-
ns
Break-Before-Make Time Delay, tD VDD = 3.3V, VNO or VNC = 1.5V, RL = 300, CL = 35pF,
(See Figure 2)
(ISL54402 Only)
Full
-
8
-
ns
Skew, tSKEW
VDD = 3.0V, VBUS = 3.8V, RL = 39,CL = 50pF,tR =
tF = 12ns at 12Mbps, (Duty Cycle = 50%) (See Figure 7)
25
-
0.15
-
ns
Rise /Fall Time Mismatch, tM
VDD = 3.0V, VBUS = 3.8V, RL = 39,CL = 50pF,tR =
tF = 12ns at 12Mbps, (Duty Cycle = 50%), (See Figure 6)
25
-
10
-
%
Total Jitter, tJ
VDD = 3.0V, VBUS = 3.8V, RL = 39,CL = 50pF,
tR = tF = 12ns at 12Mbps
25
-
1.6
-
ns
Propagation Delay, tPD
VDD = 3.0V, VBUS = 3.8V, RL = 39,CL = 50pF,
See Figure 7)
25
-
0.9
-
ns
25
-
-110
-
dB
25
-
0.007
-
%
Audio (NC) Switch -3dB Bandwidth Signal = 8dBm, RL = 50,CL = 5pF
25
-
394
-
MHz
USB (NO) Switch -3dB Bandwidth Signal = 18dBm, 1VDC offset, RL = 50,CL = 5pF
25
-
239
-
MHz
D+/D- OFF Capacitance, CD+OFF, f = 1MHz, VDD = 3.0V, VBUS = 3.2V or VIN = 0.5V, VNO
CD-OFF, CNOxOFF
or VNC = VCOM = 0V, (See Figure 5)
25
-
10
-
pF
L/R OFF Capacitance, CLOFF,
CROFF, CNCxOFF
f = 1MHz, VDD = 3.0V, VBUS = 3.8V or VIN = 1.4V, VNO
or VNC = VCOM = 0V, (See Figure 5)
25
-
13
-
pF
COM ON Capacitance, CD-/L(ON), f = 1MHz, VDD = 3.0V, VBUS = 3.8V or VIN = 1.4V, VNO
CD+/R(ON), CCOMx(ON)
or VNC = VCOM = 0V, (See Figure 5)
25
-
46
-
pF
PARAMETER
TEST CONDITIONS
RON Flatness, RFLAT(ON),
(ISL54400 and ISL54401 Only)
VDD = 3.6V, VBUS = 4.4V, ICOM = 40mA, VD+ or VD- = 0V
to VBUS, (Note 7)
ON Resistance, RON
(ISL54402 Only)
VDD = 3.0V, VINx = 1.4V, ICOM = 40mA, VNOx = 0V to
3.0V, (See Figure 3)
RON Matching Between Channels, VDD = 3.0V, VINx = 1.4V, ICOM = 40mA, VNOx = Voltage
RON (ISL54402 Only)
at max RON, (Note 9)
RON Flatness, RFLAT(ON)
(ISL54402 Only)
VDD = 3.0V, VIN = 1.4V, ICOM = 40mA, VNOx = 0V to
3.0V, (Note 7)
OFF Leakage Current, ID+(OFF) or VDD = 3.6V, VBUS = 0V or VIN = 0.5V, VD-/L or VD+/R or
ID-(OFF), INOx(OFF)
VCOM = 0.5V, 0V, VD+ or VD- or VNOx = 0V, 0.5V, VL and
VR = floating
ON Leakage Current, ION
VDD = 3.6V, VBUS = 5.25V or VIN = 1.4V, VD-/L or VD+/R
or VCOM = 0.3V, 3.6V, VD+ or VD- or VNOx = 0.3V, 3.6V,
VL and VR = floating
(NOTE 5)
MAX
UNITS
DYNAMIC CHARACTERISTICS
Turn-ON Time, tON
VDD = 2.7V, VNO or VNC = 1.5V, RL = 300, CL = 35pF,
(See Figure 1)
(ISL54402 Only)
Turn-OFF Time, tOFF
VDD = 2.7V, VNO or VNC = 1.5V, RL = 300, CL = 35pF,
(See Figure 1)
(ISL54402 Only)
RL = 32, f = 20Hz to 20kHz, VR or VL = 1.75VP-P,
Crosstalk (Channel-to-Channel),
R to D-/L, L to D+/R, NC2 to COM1, (See Figure 4)
NC1 to COM2
f = 20Hz to 20kHz, VDD = 3.0V, VBUS = 3.2V or
VIN = 0.5V, VL or VR or VNCx = 0.60VRMS, RL = 32
Total Harmonic Distortion
6
FN6240.3
July 12, 2006
ISL54400, ISL54401, ISL54402
Electrical Specifications - 2.7V to 5.5V Supply Test Conditions: VDD = +3.0V, GND = 0V, VBUSH = 3.8V, VBUSL = 3.2V,
VINH = 1.4V, VINL = 0.5V (Notes 4, 6), Unless Otherwise Specified (Continued)
TEMP
(°C)
(NOTE 5)
MIN
TYP
Power Supply Range, VDD
(ISL54400 and ISL54401 only)
Full
2.5
-
3.6
V
Power Supply Range, VDD
(ISL54402 Only)
Full
1.8
-
5.5
V
25
-
4.5
8
A
Full
-
-
10
A
25
-
3.5
8
A
Full
-
-
25
A
25
-
8
11
A
Full
-
-
15
A
25
-
0.06
0.5
A
Full
-
-
1
A
25
-
5.5
8
A
Full
-
-
10
A
PARAMETER
TEST CONDITIONS
(NOTE 5)
MAX
UNITS
POWER SUPPLY CHARACTERISTICS
Positive Supply Current, IDD
Audio Mode
(ISL54400 and ISL54401 only)
VDD = 3.6V, VBUS = Float
Positive Supply Current, IBUS
USB Mode
(ISL54400 and ISL54401 only)
VDD = 3.6V, VBUS = 5.25V
Positive Supply Current, IDD
(ISL54402 Only)
VDD = 5.5V, VIN = 0V
Positive Supply Current, IDD
(ISL54402 Only)
VDD = 5.5V, VIN = 5.5V
Positive Supply Current, IDD
(ISL54402 Only)
VDD = 5.5V, VIN = 2.85V
VTERM Voltage, VVTERM
(ISL54400 Only)
VDD = 2.5V, VBUS = 4.4V, RTERM = 16.5k to Ground
25
3.0V
-
3.6V
V
VTERM Voltage, VVTERM
(ISL54400 Only)
VDD = 2.0V, VBUS = 4.4V
25
-1.4
-
0.5
V
VBUS Voltage Low, VBUSL
(ISL54400 and ISL54401 Only)
Full
-
-
VDD + 0.2
V
VBUS Voltage High, VBUSH
(ISL54400 and ISL54401 Only)
Full
VDD + 0.8
-
-
V
DIGITAL INPUT CHARACTERISTICS
Input Voltage Low, VINL
(ISL54402 Only)
VDD = 2.7V to 3.6V
Full
-
-
0.5
V
Input Voltage High, VINH
(ISL54402 Only)
VDD = 2.7V to 3.6V
Full
1.4
-
-
V
Input Voltage Low, VINL
(ISL54402 Only)
VDD = 5.0V
Full
-
-
0.8
V
Input Voltage High, VINH
(ISL54402 Only)
VDD = 5.0V
Full
2.3
-
-
V
Input Current, IINH, IINL
(ISL54402 Only)
VDD = 5.5V, VIN = 0V or VDD
Full
-
0.1
-
A
NOTES:
4. VIN = input voltage to perform proper function.
5. The algebraic convention, whereby the most negative value is a minimum and the most positive a maximum, is used in this data sheet.
6. Parts are 100% tested at +25°C. Limits across the full temperature range are guaranteed by design and correlation.
7. Flatness is defined as the difference between maximum and minimum value of on-resistance over the specified analog signal range.
8. Guaranteed by design.
9. RON matching between channels is calculated by subtracting the channel with the highest max RON value from the channel with lowest max
RON value, between L and R, between NC1 and NC2 or between D+ and D-, or between NO1 and NO2.
7
FN6240.3
July 12, 2006
ISL54400, ISL54401, ISL54402
Test Circuits and Waveforms
VINH
LOGIC
INPUT
50%
C
VINL
tOFF
SWITCH
INPUT VNO
VOUT
NO or NC
SWITCH
INPUT
COM
IN
VOUT
90%
90%
SWITCH
OUTPUT
VDD
tr < 20ns
tf < 20ns
CONTROL
INPUT
0V
CL
35pF
RL
300
GND
tON
Logic input waveform is inverted for switches that have the opposite
logic sense.
Repeat test for all switches. CL includes fixture and stray
capacitance.
RL
V OUT = V (NO or NC) -----------------------------R L + R  ON 
FIGURE 1A. MEASUREMENT POINTS
FIGURE 1B. TEST CIRCUIT
FIGURE 1. SWITCHING TIMES (ISL54402 ONLY)
VDD
LOGIC
INPUT
VINH
NO
VNX
VOUT
COM
NC
VINL
SWITCH
OUTPUT
VOUT
C
90%
0V
tD
CL
35pF
RL
300
IN
GND
LOGIC
INPUT
Repeat test for all switches. CL includes fixture and stray
capacitance.
FIGURE 2B. TEST CIRCUIT
FIGURE 2A. MEASUREMENT POINTS
FIGURE 2. BREAK-BEFORE-MAKE TIME (ISL54402 ONLY)
VDD
C
VDD
C
SIGNAL
GENERATOR
RON = V1/40mA
L or R or NC
COM
32
Dx or L or R or Nx
IN1
VNX
0V or VDD
40mA
IN
V1
VBUS or VIN
COM
ANALYZER
COM
GND
Repeat test for all switches. Note: COM designation in diagram
refers to: D-/L, D+/R, COM1, and COM2.
FIGURE 3. RON TEST CIRCUIT
8
R or L or NC
N.C.
GND
RL
Signal direction through switch is reversed, worst case values
are recorded. Repeat test for all switches. COM designation in
diagram refers to: D-/L, D+/R, COM1, and COM2.
FIGURE 4. AUDIO CROSSTALK TEST CIRCUIT
FN6240.3
July 12, 2006
ISL54400, ISL54401, ISL54402
Test Circuits and Waveforms (Continued)
VDD
C
1.3V< VCM < 2V
Dx or L or R or Nx
OUT +
90%
VCM
IN
VBUS or VIN
IMPEDANCE
ANALYZER
OUT -
90%
10%
10%
tR
tF
COM
GND
tM = | tR -tF |
min (tR or tF)
Repeat test for all witches. COM designation in diagram
refers to: D-/L, D+/R, COM1, and COM2.
FIGURE 5. CAPACITANCE TEST CIRCUIT
FIGURE 6. RISE/FALL TIME MISMATCH TEST
tri
VDD
C
90%
10%
DIN+
50%
tskew_i
DIN-
90%
DIN+
RS
D+/R
D+
OUT+
CL
50%
10%
DIN-
RS
D-/L
OUT-
D-
tfi
tro
CL
90%
OUT+
OUT-
10%
GND
50%
tskew_o
50%
90%
10%
tf0
|tro - tri| Delay Due to Switch for Rising Input and Rising Output Signals.
|tfo - tfi| Delay Due to Switch for Falling Input and Falling Output Signals.
|tskew_0| Change in Skew through the Switch for Output Signals.
|tskew_i| Change in Skew through the Switch for Input Signals.
FIGURE 7A. MEASUREMENT POINTS
FIGURE 7B. TEST CIRCUIT
FIGURE 7. SKEW TEST
9
FN6240.3
July 12, 2006
ISL54400, ISL54401, ISL54402
Application Block Diagram
VDD
VTERM
ISL54400
USB/HEADPHONE JACK
VBUS
D-
D-/L
D+
USB
FULL-SPEED
TRANSCEIVER
L
D+/R
R
CODEC
GND
Detailed Description
Audio Switches
The ISL5440X family of devices are dual single pole/double
throw (SPDT) analog switches that operate from a single
power supply. They were designed to function as dual 2 to 1
multiplexers to select between USB differential data signals
and audio L and R stereo signals. They come in tiny µTQFN
and TDFN packages for use in MP3 players, PDAs,
cellphones, and other personal media players.
The two NC (normally closed) audio switches (L, R, NCx)
are 1 switches that can pass signals that swing below
ground. Crosstalk between the audio switches is < -110dB
and has a -3dB bandwidth of 394MHz.
All devices in this family consist of two 1 normally closed
(NC) audio switches and two 5 normally open (NO) USB
switches. The audio switches can accept signals that swing
below ground. They were designed to pass audio left and
right stereo signals, that are ground referenced, with minimal
distortion. The USB switches were designed to pass
full-speed USB differential data signals with minimal edge
and phase distortion.
The ISL54400 and ISL54401 were specifically designed for
MP3 players, personal media players and cellphone
applications that need to combine the audio headphone jack
and the USB data connector into a single shared connector,
thereby saving space and component cost. A typical
application block diagram of this functionality is shown
above. The ISL54400 and ISL54401 incorporate circuitry for
the detection of the USB VBUS voltage, which is used to
switch between the audio CODEC drivers and USB
transceiver of the MP3 player or cellphone. The ISL54400
contains additional circuitry to generate the required USB
VTERM of 3.3V for use with the USB speed setting pull-up
resistor.
The ISL54402 is an audio/data switch and its functionality is
typical of a standard dual SPDT device.
A detailed description of the two types of switches and of
each part type in the ISL5440x family are provided in the
sections below. The USB transmission and audio playback
are intended to be mutually exclusive operations.
10
The recommended maximum signal range is from -1.5V to
1.5V. You can apply positive signals greater than 1.5V but
the RON resistance of the switch increases rapidly above
1.5V. The audio signal should not be allowed to exceed the
VDD rail or swing more negative than -1.5V.
Over a signal range of ±1V these switches have an
extremely low RON flatness. They can pass ground
referenced audio signals with very low distortion (<0.01%
THD+N) when delivering 12mW into a 32headphone
speaker load. See Figures 8 and 9 THD+N performance
curves.
These switches are uni-directional switches. The audio
sources should be connected at the NC side of the switch
(pins 7 and 8) and the speaker loads should be connected at
the COM side of the switch (pins 3 and 4).
For the ISL54400 and ISL54401 parts the audio switches are
active (turned ON) whenever the VBUS voltage is  to VDD +
0.2V. The VBUS pin is internally pulled low through a
pulldown resistor allowing the VBUS pin to float. When the
VBUS pin is floating the audio switches are ON.
Note: Whenever the audio switches are ON the USB
transceivers connected at D- and D+ (pins 8 and 9) need to
be in the high impedance state or static high or low state to
keep from interfering with the audio transmission.
For the ISL54402 part the NC1 audio switch is active (turned
ON) whenever logic pin IN1 (pin 10) is LOW. The NC2 audio
switch is active (turned ON) whenever the logic pin IN2
(pin 2) is LOW. Unlike the ISL54400 and ISL54401 parts
FN6240.3
July 12, 2006
ISL54400, ISL54401, ISL54402
where the two SPDT switches work in tandem, the ISL54402
gives you independent control over each SPDT switch.
USB Switches
The two NO (normally open) USB switches (D+, D-, NOx)
are 5 bidirectional switches that are designed to pass low
speed and full-speed USB differential signals typically in the
range of 0V to 3.6V. The switches have low capacitance and
high bandwidth to pass USB full-speed signals (12Mbps)
with minimum edge and phase distortion to meet USB 2.0
signal quality specifications. See eye diagram Figure 11 on
page 13.
For the ISL54400 and ISL54401 parts, the maximum signal
range for the USB switches is from -1.5V to VBUS. The
signal voltage should not be allowed to exceed the VBUS
voltage rail or go below ground by more than -1.5V.
For the ISL54402 part, the maximum signal range is from
-1.5V to VDD. The signal voltage should not be allowed to
exceed the VDD voltage rail or go below ground by more
than -1.5V.
When using the ISL54400 and ISL54401 parts, the USB
switches are active (turned ON) whenever the VBUS voltage
is  to VDD + 0.8V. VBUS is internally pulled low, so when
VBUS is floating the USB switches are OFF.
Note: Whenever the USB switches are ON the audio drivers
of the CODEC, connected at R and L (pins 6 and 7), need to
be at AC or DC ground or floating to keep from interfering
with the data transmission.
When using the ISL54402 part, the NO1 USB switch is
active (turned ON) whenever logic pin IN1 (pin 10) is HIGH.
The NO2 USB switch is active (turned ON) whenever the
logic pin IN2 (pin 2) is HIGH. Unlike the ISL54400 and
ISL54401 parts where the two SPDT switches work in
tandem, the ISL54402 gives you independent control over
each SPDT switch.
ISL54400 and ISL54401 Operation
The ISL54400 and ISL54401 function the same except the
ISL54401 does not have the VTERM feature. The discussion
that follows pertains to both devices and will discuss using the
parts in the typical application shown in the block diagram on
page 10.
LOGIC CONTROL
The state of the ISL54400 and ISL54401 devices are
determined by the voltage at the VBUS pin (pin 2). The VBUS
pin is internally pulled low and can be left floating.
If VBUS (pin 2) is floating or the VBUS voltage  VDD + 0.2V
the part will be in the Audio mode. In Audio mode the L (left)
and R (right) 1 audio switches are ON and the D- and D+
5 switches are OFF (high impedance). In this state, power
to the part will be provided by the DC voltage connected at
the VDD pin (pin 1). In a typical application VDD will be in the
11
range of 2.5V to 3.6V and will be connected to the battery or
LDO of the MP3 player or cellphone. When a headphone is
plugged into the common connector, nothing gets connected
at the VBUS pin (it’s floating) and the ISL54400 and
ISL54401 parts remain in the audio mode and the MP3
player or cellphone audio drivers can drive the headphones
and play music.
If VBUS (pin 2) voltage is greater than VDD by 0.8V the part
will go into USB mode. In USB mode the D- and D+ 5
switches are ON and the L and R 1 audio switches are
OFF (high impedance). In this state the part will be powered
by the voltage connected at the VBUS pin (pin 2). When a
USB cable from a computer or USB hub is connected at the
common connector the VBUS voltage is driven to between
4.4V and 5.25V. The ISL54400 and ISL54401 parts will go
into the USB mode. In USB mode the computer or USB hub
transceiver and the MP3 player or cellphone USB
transceiver are connected and digital data will be able to be
transmitted back and forth.
When the USB cable is disconnected the switch
automatically turns the D+ and D- switches OFF and turns
the L and R audio switches ON.
POWER
In audio mode the power supply connected at VDD (pin 1)
provides power to the ISL54400 and ISL54401 parts. Its
voltage should be kept in the range of 2.5V to 3.6V when
used in a USB/Audio application to ensure you get proper
switching when the VBUS voltage is at its lower limit of 4.4V.
In USB mode power for the ISL54400 and ISL54401 parts is
provided from the VBUS line from the host USB controller of
the computer or USB hub. Its voltage will be between 4.4V
and 5.25V.
VTERM OPERATION (ISL54400 ONLY)
When a USB cable from a computer is connected to a USB
device a VTERM voltage must be applied to a speed
indicating pull-up resistor to properly terminate the bus and
identify whether the USB device is a full-speed or low-speed
device to facilitate proper digital transmission. When the
cable is removed from the device this VTERM voltage must
be disconnected from the speed indicating pull-up resistor.
The ISL54400 device can perform this operation.
When VDD  2.5V and VBUS  VDD + 0.8V, the VTERM pin
(pin 10) outputs an open circuit voltage equal to the voltage
at the VBUS pin. Otherwise the VTERM pin will be in a HI-Z
state.
The ISL54400 VTERM circuitry has an internal series resistor
approximately equal to 5.3k. For a full speed USB
application, it is recommended you use a 3k ±5% speed
indicating pull-up resistor. When the USB bus is in the idle
state, a 3k ±5% resistor will put the D+ line voltage in the
range of 2.7V to 3.6V as required by the USB specification.
For low-speed USB application, it is recommended you use
FN6240.3
July 12, 2006
ISL54400, ISL54401, ISL54402
a 2k ±5% pull-up resistor at the D- line in order to meet the
USB connect and disconnect timing requirements.
ISL54402 Operation
The ISL54402 is an audio/data switch. Its logic control is
typical of a standard dual SPDT switch.
The digital control for the ISL54402 are the IN pins (pin 2
and pin 10). These pins are 1.8V logic compatible when
operated with a 3.0V supply. The device has been designed
to have low IDD current even when the logic voltage is not at
the rail. With VDD = 5.5V and VIN = 2.85V the ISL54402
draws only 8µA current.
When logic pin IN1 (pin 10) is LOW the NC1 audio switch is
ON and the NO1 USB data switch is OFF. When logic pin
IN1 (pin 10) is HIGH the NC1 audio switch is OFF and the
NO1 USB data switch is ON.
When logic pin IN2 (pin 2) is LOW the NC2 audio switch is
ON and the NO2 USB data switch is OFF. When logic pin
IN2 (pin 2) is HIGH the NC2 audio switch is OFF and the
NO2 USB data switch is ON.
Power for the ISL54402 device is always provided by the DC
voltage source connected at the VDD pin (pin 1). The VDD
power supply voltage range is from 1.8V to 5.5V.
Typical Performance Curves TA = 25°C, Unless Otherwise Specified
0.015
10
RLOAD = 32
VLOAD = 0.6VRMS
RL = 32
FREQ = 1kHz
1
THD+N (%)
THD+N (%)
0.01
VDD = 2.5V
0.1
0.005
VDD = 3V
0.01
0
20
0.001
200
2k
FREQUENCY (Hz)
0
20k
10
20
30
40
50
60
70
OUTPUT POWER (mW)
FIGURE 8. THD+N vs FREQUENCY
FIGURE 9. THD+N vs POWER
Die Characteristics
SUBSTRATE POTENTIAL (POWERED UP):
NORMALIZED GAIN (dB)
GND (TDFN Paddle Connection: Tie to GND or Float)
TRANSISTOR COUNT:
1
98
GAIN
0
PROCESS:
AUDIO
-1
Submicron CMOS
USB
-2
-3
-4
RL = 50
VIN = 0.2VP-P to 2VP-P
1M
10M
100M
FREQUENCY (Hz)
1G
FIGURE 10. FREQUENCY RESPONSE
12
FN6240.3
July 12, 2006
ISL54400, ISL54401, ISL54402
Typical Performance Curves TA = 25°C, Unless Otherwise Specified (Continued)
VOLTAGE (835mV/DIV)
MASK: FS (12Mbps)
TIME (10ns/DIV)
FIGURE 11. EYE PATTERN: 12Mbps
13
FN6240.3
July 12, 2006
ISL54400, ISL54401, ISL54402
Ultra Thin Quad Flat No-Lead Plastic Package (UTQFN)
D
6
INDEX AREA
2X
A
L10.2.1x1.6A
B
N
10 LEAD ULTRA THIN QUAD FLAT NO-LEAD PLASTIC
PACKAGE
MILLIMETERS
E
SYMBOL
0.10 C
1
2X
2
0.10 C
TOP VIEW
C
A
SEATING PLANE
1
MAX
0.55
-
A1
-
-
0.05
-
0.127 REF
-
b
0.15
0.20
0.25
5
D
2.05
2.10
2.15
-
E
1.55
1.60
1.65
-
A1
SIDE VIEW
k
0.20
-
-
L
0.35
0.40
0.45
4xk
2
NX L
N
0.50 BSC
-
NX b
2
Nd
4
3
Ne
1
3
0
-
12
NOTES:
5
BOTTOM VIEW
CL
NX (b)
(A1)
L
5
e
SECTION "C-C"
TERMINAL TIP
C C
4
Rev. 3 6/06
0.10 M C A B
0.05 M C
3
(ND-1) X e
-
10

e
-
N
(DATUM B)
N-1
NOTES
0.50
e
(DATUM A)
PIN #1 ID
NOMINAL
0.45
A3
0.10 C
0.05 C
MIN
A
FOR ODD TERMINAL/SIDE
b
1. Dimensioning and tolerancing conform to ASME Y14.5-1994.
2. N is the number of terminals.
3. Nd and Ne refer to the number of terminals on D and E side,
respectively.
4. All dimensions are in millimeters. Angles are in degrees.
5. Dimension b applies to the metallized terminal and is measured
between 0.15mm and 0.30mm from the terminal tip.
6. The configuration of the pin #1 identifier is optional, but must be
located within the zone indicated. The pin #1 identifier may be
either a mold or mark feature.
7. Maximum package warpage is 0.05mm.
8. Maximum allowable burrs is 0.076mm in all directions.
9. Same as JEDEC MO-255UABD except:
No lead-pull-back, "A" MIN dimension = 0.45 not 0.50mm
"L" MAX dimension = 0.45 not 0.42mm.
10. For additional information, to assist with the PCB Land Pattern
Design effort, see Intersil Technical Brief TB389.
2.50
1.75
0.05 MIN
L
2.00
0.80
0.275
0.10 MIN
DETAIL “A” PIN 1 ID
0.25
0.50
LAND PATTERN 10
14
FN6240.3
July 12, 2006
ISL54400, ISL54401, ISL54402
Thin Dual Flat No-Lead Plastic Package (TDFN)
L10.3x3A
2X
0.10 C A
A
10 LEAD THIN DUAL FLAT NO-LEAD PLASTIC PACKAGE
D
MILLIMETERS
2X
0.10 C B
E
B
//
A
C
SEATING
PLANE
D2
(DATUM B)
6
INDEX
AREA
0.10 C
0.08 C
A3
SIDE VIEW
7
8
MAX
NOTES
A
0.70
0.75
0.80
-
A1
-
-
0.05
-
0.20 REF
b
0.20
0.25
0.30
1
5, 8
D
2.95
3.0
3.05
-
D2
2.25
2.30
2.35
7, 8
E
2.95
3.0
3.05
-
E2
1.45
1.50
1.55
7, 8
e
0.50 BSC
-
k
0.25
-
-
-
L
0.25
0.30
0.35
8
N
10
2
Nd
5
3
Rev. 3 3/06
NOTES:
2
1. Dimensioning and tolerancing conform to ASME Y14.5-1994.
2. N is the number of terminals.
NX k
3. Nd refers to the number of terminals on D.
4. All dimensions are in millimeters. Angles are in degrees.
E2
E2/2
5. Dimension b applies to the metallized terminal and is measured
between 0.15mm and 0.30mm from the terminal tip.
6. The configuration of the pin #1 identifier is optional, but must be
located within the zone indicated. The pin #1 identifier may be
either a mold or mark feature.
NX L
N
N-1
NX b
e
(Nd-1)Xe
REF.
BOTTOM VIEW
5
7. Dimensions D2 and E2 are for the exposed pads which provide
improved electrical and thermal performance.
0.10 M C A B
8. Nominal dimensions are provided to assist with PCB Land
Pattern Design efforts, see Intersil Technical Brief TB389.
9. Compliant to JEDEC MO-229-WEED-3 except for D2
dimensions.
CL
NX (b)
NOMINAL
D2/2
(DATUM A)
8
MIN
A3
6
INDEX
AREA
TOP VIEW
SYMBOL
(A1)
L1
5
9 L
e
SECTION "C-C"
C C
TERMINAL TIP
FOR ODD TERMINAL/SIDE
All Intersil U.S. products are manufactured, assembled and tested utilizing ISO9001 quality systems.
Intersil Corporation’s quality certifications can be viewed at www.intersil.com/design/quality
Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without
notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and
reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result
from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries.
For information regarding Intersil Corporation and its products, see www.intersil.com
15
FN6240.3
July 12, 2006
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