IDT IDTHS231P16 Hybrid switch with negative signal handling Datasheet

PRELIMINARY DATASHEET
IDTHS231P16
HYBRID SWITCH WITH NEGATIVE SIGNAL HANDLING
Description
Features
The IDTHS231P16 is a high-performance hybrid switch
device, combined with hybrid low distortion audio, UART
and an USB 2.0 high speed data (480 Mbps) signal
switches. When operated with a 1.8 V single supply, this
high performance switch allows 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.
• +1.7 V to +1.95 V single-supply operation
• Low distortion negative signal handling capability with
Ron typically 3Ω for Audio signal
•
•
•
•
•
The IDTHS231P16 logic SELx control pins are 1.8 V
compatible which allows for control via a standard
µcontroller. With a VDD voltage in the range of 1.7 V to 1.95
V, the device can pass USB 3 V signal sources in the
portable device, with up to 5.5 V tolerant on USB and COM
signal pins. The part has an audio enable control pin to
open all the switches and put the part in a low power state.
Control pin to open all switches and enter low power state
Cross-talk audio channels (20 Hz to 20 kHz): -110dB
-3dB bandwidth USB switches: 700 MHz
Available in 16-pin QFN package – RoHS compliant
Compliant with USB 2.0 short circuit requirements
without additional external components
Applications
•
•
•
•
The IDTHS231P16 is available in a small 16-pin QFN
package.
MP3 and other personal media players
PDA’s
Audio/USB Switching
Cellular and mobile phones
Block Diagram
SEL0
SEL1
Control
Circuit
D+
COM+
R
U+
D-
COM-
L
U-
VDD
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Truth Table (COM+, COM-)
VDD
GND
Pin Assignment (16-pin QFN)
0
0
SEL1
0
1
D+
D-
D-
D+
1
0
U+
U-
U-
U+
1
1
R
L
COM+
COM-
Power Down
R
COM+
NC
4
COM-
L
1
NC
SEL0
NC
SEL0
NC
SEL1
16-pin QFN
Pin Descriptions
Pin Number Pin Name
Pin Description
1
SEL0
Control signal pin. Internal pull-down resistor.
2
D-
3 V USB Signal. Bi-directional.
3
U-
UART Signal. Bi-directional.
4
L
Audio signal pin (left). Uni-directional. ±1.5 V signal.
5
COM-
6
NC
No connection.
7
NC
No connection.
8
COM+
9
R
Audio signal pin (right). Uni-directional. ±1.5 V signal.
10
U+
UART Signal. Bi-directional.
11
D+
3 V USB Signal. Bi-directional.
12
SEL1
Control signal pin. Internal pull-down resistor.
13
VDD
Power pin. +1.8 V VDD.
14
NC
No connection.
15
NC
No connection.
16
GND
Audio and USB signal common pin. Bi-direction in USB mode, uni-directional in Audio
mode.
Audio and USB signal common pin. Bi-direction in USB mode, uni-directional in Audio
mode.
Ground pin. 0V reference.
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Detailed Description
U-) are typically 5Ω¸ bidirectional switches that were
designed to pass high-speed USB differential signals in the
range of ±0V to 400 mV, and UART signals. These switches
have low capacitance and high bandwidth to pass USB
high-speed signals (480 Mbps) with minimum edge and
phase distortion to meet USB 2.0 high-speed signal quality
specifications.
The IDTHS231P16 device is a dual single pole/triple throw
(SPTT) high performance switch device that can operate
from a single DC power supply in the range of 1.7 V to 1.95
V. It was designed to function as a dual 3 to 1 multiplexer to
select between USB differential data signals, UART signals
and audio L and R stereo signals. It comes in tiny QFN
packages for use in cell phones, MP3 players, PDAs, and
other personal media players.
The maximum signal range for the USB switches is from 0V
to 3.6 V. The signal voltage at D- and D+ should not be allow
to exceed the 3.6 voltage rail or go below ground.
The part consists of one hybrid dual 3Ω audio, 5Ω UART and
5Ω USB switches. The hybrid switch can accept audio
signals that swing below ground and USB signals. They
were designed to pass audio left and right stereo signals,
and are ground referenced, with minimal distortion. The
USB switches were designed to pass high-speed USB
differential data signals with minimal edge and phase
distortion.
The USB switches are active (turned ON) whenever the SEL
voltage is >1.2 V.
Note: Whenever the USB switches are ON, the UART or the
audio drivers of the CODEC need to be at AC or DC ground
or floating to keep from interfering with the data
transmission.
The IDTHS231P16 was specifically designed for cell
phones and other personal media player 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.
Logic Control
The IDTHS231P16 has SELx pins that select between the
audio switches, UART and the USB switches. These pins
can be driven LOW or HIGH to switch between the audio
inputs and USB data inputs.
The SELx pins is internally pulled low through a 4MΩ
resistor to ground and can be left floating or tri-stated by the
µprocessor.
The state of the IDTHS231P16 device is determined by the
voltage at the SEL pins. Refer to truth table on page 2 of
data sheet. These logic pins are 1.8 V logic compatible so
that it can be controlled by a standard µprocessor.
Logic control voltage levels:
Audio Switches
SELx = Logic “0” (Low) when <0.5 V
SELx = Logic “1” (High) when >1.2 V
The two audio switches (L, R) are typically 3Ω¸ switches that
can pass signals that swing below ground by as much as 1.5
V. They were designed to pass ground reference stereo
signals with minimal insertion loss and very low distortion.
Crosstalk between the audio switches over the audio band
is typically < -110dB.
These audio switches are uni-directional switches. The
audio drivers should be connected at the L and R side of the
switch and the speaker loads should be connected at the
COM side of the switch.
Note: Whenever the audio switches are ON the USB and
UART transceivers need to be in the high impedance state
or static high or low state.
USB/ UART Switches
The two USB switches (D+, D-) and two UART switches (U+,
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Absolute Maximum Ratings
Stresses above the ratings listed below can cause permanent damage to the IDTHS231P16. These ratings, which
are standard values for IDT commercially rated parts, are stress ratings only. Functional operation of the device at
these or any other conditions above those indicated in the operational sections of the specifications is not implied.
Exposure to absolute maximum rating conditions for extended periods can affect product reliability. Electrical
parameters are guaranteed only over the recommended operating temperature range.
Item
Rating
VDD to GND
-0.3 V to 6.0 V
Ambient Operating Temperature Range
-40°C to +85°C
Continuous Current (audio switches)
±150 mA
Peak Current (audio switches)
Pulsed 1 ms, 10% duty cycle max.
±300 mA
Continuous Current (USB or UART switches)
±40 mA
Peak Current (USB or UART switches)
Pulsed 1 ms, 10% duty cycle max.
±100 mA
Voltages
Switch I/O Voltage - D+, D-, COM+, COM- (see note below)
-0.3 V to +6 V
Switch I/O Voltage - L, R (see note below)
-2 V to +2 V
SELx (see note below)
-0.3 V to [(VDD) + 0.3 V]
ESD Rating
HBM
>7 kV
MM
>200 V
CDM
>1 kV
Note: These specifications are for absolute maximum rating. Not recommended for typical operation.
Recommended Operating Conditions 1
Symbol
VDD
Parameter
Rating
Supply Voltage
1.7 V to 1.95 V
Storage Temperature
-40°C to +85°C
Note 1: The input and output negative voltage ratings may be exceeded if the input and output diode current ratings
are observed. DC switch voltage may never exceed 1.95 V.
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Electrical Characteristics – 1.7 V to 1.95 V Supply
Unless stated otherwise, VDD = 1.7 V to 1.95 V, GND = 0V
Parameter
Symbol
Conditions
Min.
Typ.
Max.
Units
1.5
V
Audio Switches (L, R)
Audio Signal Range
On-Resistance
RON Matching Between
Channels
RON Flatness
VANALOG
RON
RON
RFLAT(ON)
-1.5
3
Ω
VL/R = 0.7 V ION = -26 mA
0.3
Ω
ION = -26 mA
1.5
Ω
VL/R = -2 V, 0V, 0.7 V, VBUS = 0V
VAUDIO-0.7 V, VAUDIO ION = -26 mA
USB/UART Switches (D+, D-, U+, U-)
USB Signal Range
On-Resistance
RON Matching Between
Channels
VDigital
RON
RON
OFF-leakage Current
ID+(OFF) or
ID-(OFF)
ON-leakage Current
IDx
0
3.6
V
5
Ω
VD+/D- = 0V, ION = -8 mA
0.3
Ω
D+, D-, R, L = Floating
VDD = 1.8 V
±50
nA
U+, U-, D+, D-, R, L = 0.3 V
VDD = 1.8 V
±50
nA
VD+/D- = 0V, 0.4 V, ION = -8 mA
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Parameter
Symbol
HYBRID SWITCH
Conditions
Min.
Typ.
(Note 2)
Max.
Units
(Note 2)
Dynamic Characteristics
Turn-on Time
tON
RL = 50Ω, CL = 50 pF, 1 V Pk-Pk signal
1
µs
Turn-off Time
tOFF
RL = 50Ω, CL = 50 pF, 1 V Pk-Pk signal
1
µs
100
ns
50
ps
Break-Before-Make
Delay
tD
Skew
tSKEW
Additive Jitter
tJ(RMS)
RL = 45Ω, CL = 10 pF, tR=tF=750 ps at 480
Mbps, (Duty cycle=50%)
RL=45Ω, CL=10 pF, tR=tF=750 ps at 480 Mbps
10
ps
RL=45Ω, CL=10 pF (Fig.7)
250
ps
RL=32Ω, f = 20Hz to 20 kHz,
VLor VR=0.707 VRMS (2VP-P)
-110
dB
f = 20Hz to 20 kHz, VLor VR=0.707 VRMS
(2VP-P), RS, RT
0.01
%
USB Switch -3 dB
Bandwidth
RL=50Ω, CL=5 pF
700
MHz
UART Switch -3 dB
Bandwidth
RL=50Ω, CL=5 pF
200
MHz
f=1 MHz, VLor VR=VCOMx=0V
6
pF
f=1 MHz, VD+or VD-=VCOMx=0V
9
pF
f=1 MHz, VDD=3.3 V, VD-or VD+=VCOMx=0V
10
pF
Propagation Delay
Crosstalk
(Channel-to-channel)
Total Harmonic
Distortion
tPD
R to COM-,
L to COM+
THD
D+/D- OFF
Capacitance
CD+(OFF),
CD-(OFF)
L/R OFF
Capacitance
CLOFF,
CROFF
COM ON
Capacitance
CCOM-(ON),
CCOM+(ON)
Power Supply
Power Supply Range
VDD
Positive Supply
Current
IDD
Positive Supply
Current (Low Power
State)
IDD
SELx = 00, No input signal
Voltage Low
VIL
SELx pins
Voltage High
VIH
SELx pins
RCTRL
SELx pins
Internal Pull-down
Resistor
1.7
1.95
V
5
10
µA
10
100
nA
0.5
V
1.2
V
10
MΩ
Note 1: D+, D-, U+, U-, COM+, COM-, SELx can tolerate up to 5.5 V signals.
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Test Circuits and Waveforms
C
VDD
VDD
Logic
Input
tr <20ns
tr <20ns
50%
0V
Switch
Input
Switch
Input
tOFF
VINPUT
VOUT
Audio or USB
COMx
VOUT
IN
90%
90%
Switch
Output
CTRL
VINPUT
RL
50
ohm
GND
VIN
0V
CL
10pF
tON
Repeat test for all switches. CL includes fixture and stray
capacitance.
Logic input waveform is inverted for switches that have the
opposite logic sense.
VOUT = V(INPUT)
Fig. 1A Measurement Points
RL
RL + R(ON)
Fig. 1B Test Circuit
Figure 1: Switching Times
VDD
Logic
Input
VDD
CTRL
D- or D+
VINPUT
C
COMx
VOUT
L or R
0V
IN
Switch
Output
VOUT
90%
RL
50
ohm
GND
VIN
CL
10pF
0V
tD
Repeat test for all switches. CL includes fixture and stray
capacitance.
Fig 2A Measurement Points
Fig. 2B Test Circuit
Figure 2: Break-Before-Make Time
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Marking Diagram (QFN)
TBD
Notes:
1. “Z” is the device step (1 to 2 characters).
2. YYWW is the last two digits of the year and week that the part was assembled.
3. “$” is the assembly mark code.
4. “G” after the two-letter package code designates RoHS compliant package.
5. “I” at the end of part number indicates industrial temperature range.
6. Bottom marking: country of origin if not USA.
Thermal Characteristics
Parameter
Symbol
Rating
Units
θ JA
TBD
° C/W
+150
°C
-65 to +150
°C
Thermal Resistance (see note below)
16-pin QFN package
Maximum Junction Temperature (plastic package)
Maximum Storage Temperature Range
Note: θJA is measured with the component mounted on a high effective thermal conductivity test board in free air.
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Package Outline and Package Dimensions (16-pin 2.5x2.5mm QFN)
Package dimensions are kept current with JEDEC Publication No. 95
Seating Plane
A1
Index Area
N
1
2
(Ref)
ND & NE
Even
(ND-1)x e
(Ref)
L
A3
e
N
1
(Typ)
If ND & NE
2
are Even
2
Sawn
Singulation
E
E2
E2
Top View
A
D
0.08 C
Symbol
A
A1
A3
b
e
N
ND
NE
D x E BASIC
D2
E2
L
Min
(NE-1)x e
(Ref)
2
(Ref)
ND & NE
Odd
C
b
e
Thermal Base
D2
2
D2
Millimeters
Max
0.50
0.60
0
0.05
0.25 Reference
0.15
0.25
0.40 BASIC
16
4
4
2.50 x 2.50
1.00
1.25
1.00
1.25
0.255
0.425
Ordering Information
Part / Order Number
Marking
Shipping Packaging
Package
Temperature
HS231P16NDGI
TBD
Tubes
16-pin QFN
-40 to +85° C
Tape and Reel
16-pin QFN
-40 to +85° C
HS231P16NDGI8
Parts that are ordered with a “G” after the two-letter package code are the Pb-Free configuration and are RoHS compliant.
While the information presented herein has been checked for both accuracy and reliability, Integrated Device Technology (IDT) assumes
no responsibility for either its use or for the infringement of any patents or other rights of third parties, which would result from its use. No
other circuits, patents, or licenses are implied. This product is intended for use in normal commercial applications. Any other applications
such as those requiring extended temperature range, high reliability, or other extraordinary environmental requirements are not
recommended without additional processing by IDT. IDT reserves the right to change any circuitry or specifications without notice. IDT
does not authorize or warrant any IDT product for use in life support devices or critical medical instruments.
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