IDTHS221P10 [IDT]
HYBRID SWITCH WITH NEGATIVE SIGNAL HANDLING; 具有负的信号处理混合开关
| 型号： | IDTHS221P10 |
| 厂家： | 
INTEGRATED DEVICE TECHNOLOGY |
| 描述： | HYBRID SWITCH WITH NEGATIVE SIGNAL HANDLING |
| 文件： | 总11页 (文件大小：219K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
DATASHEET
IDTHS221P10
HYBRID SWITCH WITH NEGATIVE SIGNAL HANDLING
Description
Features
The IDTHS221P10 is a high-performance hybrid switch
device, combined with hybrid low distortion audio and USB
2.0 high speed data (480 Mbps) signal switches, and
analog 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 (VDDx)
• Low distortion negative signal handling capability with
Ron less than 2 ohm for Audio signal
• 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 µMLP packages – RoHS compliant
The IDTHS221P10 logic SEL control pin is 1.8 V
• Compliant with USB 2.0 short circuit requirements
without additional external components
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.
• Power off protection on common D+/R, D-/L ports
Applications
• MP3 and other personal media players
• PDA’s
The IDTHS221P10 is available in a small 10-pin µMLP
package.
• Audio/USB Switching
• Cellular and mobile phones
Block Diagram
SEL
Control
Circuit
D+
R
COM+
RCOM+
D-
L
COM-
RCOM-
VDDD
VDDA
GND
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Pin Assignment (10-pin µMLP)
SEL
VDDA
GND
L
VDDD
D+
D-
R
Truth Table (COM+, COM-)
SEL
COM+
R
COM-
0
1
L
D+
D-
Pin Descriptions
Pin Number Pin Name
Pin Description
1
2
3
4
5
6
D-
R
3 V USB Signal. Bi-directional.
Audio signal pin (right). Uni-directional. 1.5 V signal.
Audio signal pin (left). Uni-directional. 1.5 V signal.
Ground pin. 0V reference.
L
GND
VDDA
COM-
Power pin for Audio R/L signal. +1.8 V VDD.
Audio and USB signal common pin. Bi-direction in USB mode,
uni-directional in Audio mode.
7
COM+
Audio and USB signal common pin. Bi-direction in USB mode,
uni-directional in Audio mode
8
9
SEL
VDDD
D+
Control signal pin. Internal pull-down resistor.
Power pin for USB. +1.8 V VDD.
10
3 V USB Signal. Bi-directional.
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switches that were designed to pass high-speed USB
differential signals in the range of 0V to 400 mV. 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.
Detailed Description
The IDTHS221P10 device is a dual single pole/double throw
(SPDT) 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 2 to 1 multiplexer to
select between USB differential data signals and audio L
and R stereo signals. It comes in tiny µMLP 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 USB switches are active (turned ON) whenever the SEL
voltage is >1.2 V.
The part consists of one hybrid dual 2Ω audio 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.
Note: Whenever the USB switches are ON the audio drivers
of the CODEC need to be at AC or DC ground or floating to
keep from interfering with the data transmission.
Logic Control
The state of the IDTHS221P10 device is determined by the
voltage at the SEL pin. Refer to truth table on page 2 of data
sheet. These logic pins are 1.8 V logic compatible, and can
be controlled by a standard µprocessor.
The IDTHS221P10 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.
The SEL pin is internally pulled low through a 4MΩ resistor
to ground and can be left floating or tri-stated by the
µprocessor.
The IDTHS221P10 has a SEL pin that select between the
audio switches and the USB switches. This pin can be
driven LOW or HIGH to switch between the audio inputs and
USB data inputs.
Logic control voltage levels:
SEL = Logic “0” (Low) when <0.5 V
SEL = Logic “1” (High) when >1.2 V
Audio Switches
The two audio switches (L, R) are 2Ω¸ 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. The audio switches are active
(turned ON) whenever the SEL voltage to <0.5 V.
Note: Whenever the audio switches are ON the USB
transceivers need to be in the high impedance state or static
high or low state.
USB Switches
The two USB switches (D+, D-) are 5Ω¸ bidirectional
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Absolute Maximum Ratings
Stresses above the ratings listed below can cause permanent damage to the IDTHS221P10. 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
Continuous Current (audio switches)
-40°C to +85°C
150 mA
Peak Current (audio switches)
300 mA
Pulsed 1 ms, 10% duty cycle max.
Continuous Current (USB switches)
40 mA
Peak Current (USB switches)
100 mA
Pulsed 1 ms, 10% duty cycle max.
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
>8 kV
>400 V
>1 kV
MM
CDM
Note: These specifications are for absolute maximum rating. Not recommended for typical operation.
Recommended Operating Conditions 1
Symbol
Parameter
Rating
V
Supply Voltage
1.7 V to 1.95 V
CC
V
DC Switch Voltage
0V to V
0V to V
IN
DD
DD
DC Input Diode Current
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
Audio Switches (L, R)
Audio Signal Range
On-Resistance
VANALOG
RON
RON
-1.5
1.5
V
2
Ω
Ω
RON Matching Between
Channels
0.2
RON Flatness
RFLAT(ON)
1.5
10
Ω
Discharge Pull-down
Resistance
RCOM+,
RCOM-
POP discharge pull-down resistor
kΩ
USB Switches (D+, D-)
USB Signal Range
On-Resistance
VANALOG
RON
RON
0
3.6
V
5
Ω
Ω
RON Matching Between
Channels
0.1
RON Flatness
RFLAT(ON)
1.5
50
Ω
OFF-leakage Current
ID+(OFF) or
ID-(OFF)
nA
ON-leakage Current
IDx
50
nA
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Parameter
Symbol
Conditions
Min.
(note 2)
Typ. Max. Units
(note 2)
Dynamic Characteristics
Turn-on Time
Turn-off Time
tON
tOFF
tD
20
5
µs
µs
µs
Break-Before-Make
Delay
25
Skew
tSKEW
RL = 45Ω, CL = 10 pF, tR=tF=750 ps at 480
Mbps, (Duty cycle=50%)
50
ps
Additive Jitter
tJ
RL=45Ω, CL=10 pF, tR=tF=750 ps at 480 Mbps
RL=45Ω, CL=10 pF (Fig.7)
100
250
ps
ps
dB
Propagation Delay
tPD
Crosstalk
(Channel-to-channel)
R to COM-,
L to COM+
RL=32Ω, f = 20Hz to 20 kHz,
VLor VR=0.707 VRMS (2VP-P)
-110
Total Harmonic
Distortion
THD
f = 20Hz to 20 kHz, VLor VR=0.707 VRMS
(2VP-P), RL= 32Ω
0.06
700
6
%
MHz
pF
USB Switch -3 dB
Bandwidth
RL=50Ω, CL=5 pF
D+/D- OFF
Capacitance
C
D+(OFF),
CD-(OFF)
f=1 MHz, VLor VR=VCOMx=0V
f=1 MHz, VD+or VD-=VCOMx=0V
f=1 MHz, VDD=3.3 V, VD-or VD+=VCOMx=0V
L/R OFF
Capacitance
CLOFF
CROFF
,
9
pF
COM ON
CCOM-(ON)
,
10
pF
Capacitance
CCOM+(ON)
Power Supply
Power Supply Range
VDD
IDD
1.7
1.2
1.95
10
V
Positive Supply
Current
5
4
µA
Voltage Low
Voltage High
VIL
VIH
SEL pin
SEL pin
SEL pin
0.5
V
V
Internal Pull-down
Resistor
RSEL
MΩ
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Test Circuits and Waveforms
C
VDD
VDD
tr <20ns
tr <20ns
Logic
Input
50%
CTRL
VINPUT
0V
VOUT
Audio or USB
Switch
Input
tOFF
COMx
Switch
Input
VINPUT
VOUT
IN
CL
10pF
RL
50
ohm
90%
90%
GND
VIN
Switch
Output
0V
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.
RL
VOUT = V(INPUT)
RL + R(ON)
Fig. 1A Measurement Points
Fig. 1B Test Circuit
Figure 1: Switching Times
C
VDD
CTRL
D- or D+
VDD
VINPUT
VOUT
COMx
Logic
L or R
Input
0V
IN
CL
10pF
RL
50
VOUT
GND
Switch
90%
VIN
ohm
Output
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 (µMLP)
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
Thermal Resistance (see note below)
10-pin µMLP package
Symbol
Rating
Units
θ
TBD
+150
°C/W
°C
JA
Maximum Junction Temperature (plastic package)
Maximum Storage Temperature Range
-65 to +150
°C
Note: θ is measured with the component mounted on a high effective thermal conductivity test board in free air.
JA
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Package Outline and Package Dimensions (10-pin µMLP)
Millimeters
NOM MAX
SYMBOL
MIN
Notes
1, 2
A
A1
A3
b
0.51
0.00
0.55
0.02
0.60
0.05
1, 2
0.15 ref
0.20
1, 2
0.15
0.09
0.25
0.20
c
D
1.40 BASIC
E
1.80 BASIC
6.00
E1
N
6.20
10
3
3
5
5
ND
NE
e
2
0.40
0.15
0.10
0.10
aaa
bbb
ccc
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Ordering Information
Part / Order Number
HS221P10NDGI
Marking
Shipping Packaging
Tubes
Package
10-pin µMLP
10-pin µMLP
Temperature
-40 to +85°C
-40 to +85°C
TBD
HS221P10NDGI8
Tape and Reel
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.
Revision History
Rev. Originator
Date
Description of Change
A
B
C
D
EL
EL
10/22/07 Preliminary datasheet. Initial release.
11/09/07 Added Low Power State
01/04/08 Changed supply voltage from 1.8 V 0.1 V to 1.7 V – 1.95 V.
01/04/08 Added Rcom+ and Rcom- resistors to Block Diagram; updated Electrical Characteristics
table.
E
F
01/29/08 Absolute I/O Voltage ratings. Industrial temperature range.
11/21/08 Updated ESD; clarification on POP discharge resistor.
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© 2006 Integrated Device Technology, Inc. All rights reserved. Product specifications subject to change without notice. IDT and the IDT logo are trademarks of Integrated Device
Technology, Inc. Accelerated Thinking is a service mark of Integrated Device Technology, Inc. All other brands, product names and marks are or may be trademarks or registered
trademarks used to identify products or services of their respective owners.
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