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PRELIMINARY DATASHEET
HYBRID SWITCH WITH NEGATIVE SIGNAL HANDLING
IDTHS231P16
Description
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. The IDTHS231P16 logic SELx control pins are 1.8 V compatible which allows for control via a standard controller. 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. The IDTHS231P16 is available in a small 16-pin QFN package.
Features
* +1.7 V to +1.95 V single-supply operation * Low distortion negative signal handling capability with
Ron typically 3 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 16-pin QFN package - RoHS compliant Compliant with USB 2.0 short circuit requirements without additional external components
Applications
* * * *
MP3 and other personal media players PDA's Audio/USB Switching Cellular and mobile phones
Block Diagram
SEL0 SEL1 Control Circuit
D+ R U+ DL UCOMCOM+
VDD
GND
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Pin Assignment (16-pin QFN)
GND VDD NC NC
Truth Table (COM+, COM-)
SEL1
0
SEL0
0 1 0 1
COM+
D+ U+ R
COMDUL
Power Down
SEL0 DUL
1
SEL1 D+ U+
0 1 1
4
R COM+ NC NC
COM-
16-pin QFN
Pin Descriptions
Pin Number Pin Name
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 SEL0 DUL COMNC NC COM+ R U+ D+ SEL1 VDD NC NC GND 3 V USB Signal. Bi-directional. UART Signal. Bi-directional. Audio signal pin (left). Uni-directional. 1.5 V signal. Audio and USB signal common pin. Bi-direction in USB mode, uni-directional in Audio mode. No connection. No connection. Audio and USB signal common pin. Bi-direction in USB mode, uni-directional in Audio mode. Audio signal pin (right). Uni-directional. 1.5 V signal. UART Signal. Bi-directional. 3 V USB Signal. Bi-directional. Control signal pin. Internal pull-down resistor. Power pin. +1.8 V VDD. No connection. No connection. Ground pin. 0V reference.
Pin Description
Control signal pin. Internal pull-down resistor.
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Detailed Description
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 part consists of one hybrid dual 3 audio, 5 UART and 5 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 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. 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.
U-) are typically 5 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 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. 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.
Logic Control
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 processor. The SELx pins is internally pulled low through a 4M resistor to ground and can be left floating or tri-stated by the processor. Logic control voltage levels: SELx = Logic "0" (Low) when <0.5 V SELx = Logic "1" (High) when >1.2 V
Audio Switches
The two audio switches (L, R) are typically 3 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
VDD to GND Ambient Operating Temperature Range Continuous Current (audio switches) Peak Current (audio switches) Pulsed 1 ms, 10% duty cycle max. Continuous Current (USB or UART switches) Peak Current (USB or UART switches) Pulsed 1 ms, 10% duty cycle max. Voltages Switch I/O Voltage - D+, D-, COM+, COM- (see note below) Switch I/O Voltage - L, R (see note below) SELx (see note below) ESD Rating HBM MM CDM >7 kV >200 V >1 kV
Rating
-0.3 V to 6.0 V -40C to +85C 150 mA 300 mA 40 mA 100 mA
-0.3 V to +6 V -2 V to +2 V -0.3 V to [(VDD) + 0.3 V]
Note: These specifications are for absolute maximum rating. Not recommended for typical operation.
Recommended Operating Conditions 1
Symbol
VDD Supply Voltage Storage Temperature
Parameter
Rating
1.7 V to 1.95 V -40C to +85C
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
Audio Signal Range On-Resistance RON Matching Between Channels RON Flatness USB Signal Range On-Resistance RON Matching Between Channels OFF-leakage Current ON-leakage Current
Symbol
VANALOG RON RON RFLAT(ON) VDigital RON RON ID+(OFF) or ID-(OFF) IDx
Conditions
Min.
-1.5
Typ.
Max.
1.5
Units
V
Audio Switches (L, R)
VL/R = -2 V, 0V, 0.7 V, VBUS = 0V VAUDIO-0.7 V, VAUDIO ION = -26 mA VL/R = 0.7 V ION = -26 mA ION = -26 mA 0 VD+/D- = 0V, 0.4 V, ION = -8 mA VD+/D- = 0V, ION = -8 mA D+, D-, R, L = Floating VDD = 1.8 V U+, U-, D+, D-, R, L = 0.3 V VDD = 1.8 V 5 0.3 50 50 3 0.3 1.5
USB/UART Switches (D+, D-, U+, U-)
3.6 V nA nA
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Parameter
Symbol
Conditions
Min.
(Note 2)
Typ.
Max.
(Note 2)
Units
Dynamic Characteristics
Turn-on Time Turn-off Time Break-Before-Make Delay Skew Additive Jitter Propagation Delay Crosstalk (Channel-to-channel) Total Harmonic Distortion USB Switch -3 dB Bandwidth UART Switch -3 dB Bandwidth D+/D- OFF Capacitance L/R OFF Capacitance COM ON Capacitance CD+(OFF), CD-(OFF) CLOFF, CROFF CCOM-(ON), CCOM+(ON) VDD IDD IDD SELx = 00, No input signal tON tOFF tD tSKEW tJ(RMS) tPD R to COM-, L to COM+ THD RL = 45 CL = 10 pF, tR=tF=750 ps at 480 , Mbps, (Duty cycle=50%) RL=45 CL=10 pF, tR=tF=750 ps at 480 Mbps , RL=45 CL=10 pF (Fig.7) , , RL=32 f = 20Hz to 20 kHz, VLor VR=0.707 VRMS (2VP-P) f = 20Hz to 20 kHz, VLor VR=0.707 VRMS (2VP-P), RS, RT , RL=50 CL=5 pF RL=50 CL=5 pF , 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 RL = 50 CL = 50 pF, 1 V Pk-Pk signal , RL = 50 CL = 50 pF, 1 V Pk-Pk signal , 1 1 100 50 10 250 -110 0.01 700 200 6 9 10 s s ns ps ps ps dB % MHz MHz pF pF pF
Power Supply
Power Supply Range Positive Supply Current Positive Supply Current (Low Power State) Voltage Low Voltage High Internal Pull-down Resistor 1.7 5 10 1.95 10 100 V A nA
VIL VIH RCTRL
SELx pins SELx pins SELx pins 1.2 10
0.5
V V M
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
VDD C
Logic Input Switch Input Switch Output
VDD 50% 0V VINPUT 90% 0V tON VOUT tOFF
tr <20ns tr <20ns
Switch Input VINPUT
CTRL Audio or USB COMx IN GND RL 50 ohm CL 10pF VOUT
90%
VIN
Logic input waveform is inverted for switches that have the opposite logic sense.
Repeat test for all switches. CL includes fixture and stray capacitance.
VOUT = V(INPUT)
RL RL + R(ON)
Fig. 1A Measurement Points
Fig. 1B Test Circuit
Figure 1: Switching Times
VDD C
Logic Input
VDD 0V
VINPUT
CTRL D- or D+ L or R IN
COMx
VOUT
Switch Output
VOUT 0V tD
90%
VIN
GND
RL 50 ohm
CL 10pF
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
Thermal Resistance (see note below) 16-pin QFN package Maximum Junction Temperature (plastic package) Maximum Storage Temperature Range JA TBD +150 -65 to +150 C/W C C
Symbol
Rating
Units
Note: JA 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 Index Area N 1 2 A1 A3 (ND-1)x e (Ref) L N 1 2 Sawn Singulation Top View A E2 (Ref) ND & NE Even e (Typ) If ND & NE 2 are Even (NE-1)x e (Ref)
E
E2
2 b e D2 2 D2
D
(Ref) ND & NE Odd
Thermal Base
0.08 C
Symbol Min Millimeters Max
C
A A1 A3 b e N ND NE D x E BASIC D2 E2 L
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
HS231P16NDGI HS231P16NDGI8
Marking
TBD
Shipping Packaging
Tubes Tape and Reel
Package
16-pin QFN 16-pin QFN
Temperature
-40 to +85 C -40 to +85 C
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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(c) 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. Printed in USA

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