IDTHS231P16NDG8 - Integrated Device Technology

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HYBRID SWITCH WITH NEGATIVE SIGNAL HANDLING IDTHS231P16

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Description

The IDTHS231P16 is a hi gh-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 connect or in personal media play ers and

other portable battery powered devices.

The IDTHS231P16 logic SELx control pins are 1.8 V

compatible which allows for control via a standard

µcontroller . Wit h a VDD voltage in th e 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 th e 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 3Ω for Audio signal

•Control pin to ope n all switche s and enter low po wer 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

GND

D+

SEL0

COM-

COM+

VDD

Control

Circuit

U+

D-

U-

SEL1

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Pin Assignment (16-pin QFN) Truth Table (COM+, COM-)

Pin Descriptions

SEL0

D-

VDD

U-

D+

U+

GND

SEL1

COM-

COM+

16-pin QFN

SEL1 SEL0 COM+ COM-

00 Power Down

0 1 D+ D-

1 0 U+ U-

11RL

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- Audio and USB signal common pin. Bi-direction in USB mode, un i-directional in Audio

mode.

6 NC No connection.

7 NC No connection.

8 COM+ Audio and USB signal common pin. Bi-direction in USB mode, un i-directional in Audio

mode.

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 Ground pin. 0V re ference.

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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 pow er supply in the r ange of 1.7 V t o 1.95

V. It was d esigned to function as a du al 3 to 1 multiplexer to

select betwe en USB diff eren tial data signals , UART signals

and audio L and R ster eo signals. It comes in tiny QFN

packages for use in cell phones, MP3 players, PDAs, and

other pers on a l med i a players.

The part consists of one h ybrid dual 3Ω audio , 5Ω UART and

5Ω USB switches. The hybrid switch can accept audio

signals that swing belo w 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 ot he r pe rs on al m ed i a 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.

Audio Switches

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 t he 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+,

U-) are typically 5Ω¸ bidirectional switches that were

designed to pass high-speed USB diff erent ial signals in the

range of ±0V to 400 mV, and U AR T signals. These s witches

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 sign al quality

specifications.

The maximum signa l range f or the USB s witches 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: Whenev er the USB switches are ON, the UART or the

audio driv ers of the CODEC need to be at AC or DC g round

or floating to keep from interfering with the data

transmission.

Logic Control

The state of the IDTHS231P16 de vice 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.

The SELx pins is internally pulled low through a 4MΩ

resistor to g round and can be left f loating or tri-stated by t he

µprocessor.

Logic control voltage levels:

SELx = Logic “0” (Low) when <0.5 V

SELx = Logic “1” (High) when >1.2 V

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Absolute Maximum Ratings

Stresses abo ve the ratings listed belo w can ca use p ermanent damag e to th e I DTHS2 31 P1 6. 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 guara nteed only over the recommended operating temperature range.

Note: These specifications are for absolute maximum rating. Not re commended for typical operation.

Recommended Operating Conditions 1

Note 1: The input and output negative voltage ratings may be exceeded if the input and output diode current rating s

are observed. DC switch voltage may never exceed 1.95 V.

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 swit ches)

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

Symbol Parameter Rating

VDD Supply Voltage 1.7 V to 1.95 V

Storage Temperature -40°C to +85°C

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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 VANALOG -1.5 1.5 V

On-Resistance RON VL/R = -2 V, 0V, 0.7 V, VBUS = 0V

VAUDIO-0.7 V, VAUDIO ION = -26 mA 3Ω

RON Matching Between

Channels RON VL/R = 0.7 V ION = -26 mA 0.3 Ω

RON Flatness RFLAT(ON) ION = -26 mA 1.5 Ω

USB/UART Switches (D+, D-, U+, U-)

USB Signal Range VDigital 03.6V

On-Resistance RON VD+/D- = 0V, 0.4 V, ION = -8 mA 5 Ω

RON Matching Between

Channels RON VD+/D- = 0V, ION = -8 mA 0.3 Ω

OFF-leakage Current ID+(OFF) or

ID-(OFF)

D+, D-, R, L = Floating

VDD = 1.8 V ±50 nA

ON-leakage Current IDx U+, U-, D+, D-, R, L = 0.3 V

VDD = 1.8 V ±50 nA

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Note 1: D+, D-, U+, U-, COM+, COM-, SELx can tolerate up to 5.5 V signals.

Parameter Symbol Conditions Min.

(Note 2) Typ. Max.

(Note 2) Units

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

Break-Before-Make

Delay tD100 ns

Skew tSKEW RL = 45Ω, CL = 10 pF, tR=tF=750 ps at 480

Mbps, (Duty cycle=50%) 50 ps

Additive Jitter tJ(RMS) RL=45Ω, CL=10 pF, tR=tF=750 ps at 480 Mbps 10 ps

Propagation Delay tPD RL=45Ω, CL=10 pF (Fig.7) 250 ps

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 dB

Total Harmonic

Distortion THD 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

D+/D- OFF

Capacitance CD+(OFF),

CD-(OFF) f=1 MHz, VLor VR=VCOMx=0V 6 pF

L/R OFF

Capacitance CLOFF,

CROFF

f=1 MHz, VD+or VD-=VCOMx=0V 9 pF

COM ON

Capacitance CCOM-(ON),

CCOM+(ON)

f=1 MHz, VDD=3.3 V, VD-or VD+=VCOMx=0V 10 pF

Power Supply

Pow er Supply Range VDD 1.7 1.95 V

Positive Supply

Current IDD 510µA

Positive Supply

Current (Low Power

State)

IDD SELx = 00, No input signal 10 100 nA

Voltage Low VIL SELx pins 0.5 V

Voltage High VIH SELx pins 1.2 V

Internal Pull-down

Resistor RCTRL SELx pins 10 MΩ

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Test Circuits and Waveforms

Figure 1: Switching Times

Figure 2: Break-Be fore-Make Time

Switch

Input

VDD

VINPUT

GND

Audio or USB

CTRL

COMx

VIN

VOUT

RLCL

ohm

10pF

Repeat test for all switches. CL includes fixture and stray

capacitance.

VOUT = V(INPUT) RL

RL + R(ON)

Fig. 1B Test Circuit

Logic

Input

Switch

Input

Switch

Output

VDD

VINPUT

50%

90%

VOUT

tOFF

tON

90%

tr <20ns

Logic input waveform is inverted for switches that have the

opposite logic sense.

Fig. 1A Measurement Points

VDD

VINPUT

GND

L or R

CTRL

COMx

VIN

VOUT

RLCL

ohm

10pF

Repeat test for all switches. CL includes fixture and stray

capacitance.

Fig. 2B Test Circuit

D- or D+

Logic

Input

Switch

Output

VDD

90%

VOUT

Fig 2A Measurement Points

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Marking Diagram (QFN)

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

Note: θJA is measured with the component mounted on a high effective thermal conductivity test board in free air.

Parameter Symbol Rating Units

Therm al Re si st an c e (s ee no te be low)

16-pin QFN package θJA TBD °C/W

Maximum Junction Temperature (plastic package) +150 °C

Maximum Storage Temperature Range -65 to +150 °C

TBD

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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

Ordering Information

Par t s that are ordered with a “G” after the tw o -le tte r package code ar e the Pb-Free configuratio n an d ar e Ro HS c om pl iant.

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 requir ing extended temperature range, high reliability, or other extraordinary environmental requirements are not

recommended without additional processin g 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.

Millimeters

Symbol Min Max

A0.500.60

A1 0 0.05

A3 0.25 Reference

b0.150.25

e 0.40 BASIC

N16

ND4

NE4

D x E BASIC 2.50 x 2.50

D2 1.00 1.25

E2 1.00 1.25

L 0.255 0.425

Part / Order Number Marking Shipping Packaging Package Temperature

HS231P16NDGI TBD Tubes 16-pin QFN -40 to +85°C

HS231P16NDGI8 Tape and Reel 16-pin QFN -40 to +85°C

Sawn

Singulation

Index Area

Top View

Seating Plane

E2 E2 2

C0.08

(Ref)

ND & NE

Odd

(Ref)

ND & NE

Even

(ND-1)x

(Ref)

Thermal Base

(Typ)

If ND & NE

are Even

(NE-1)x

(Ref)

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trademarks used to identify products or services of their respective owners.

Printed in USA

Corporate Headquarters

Integrated Device Technology, Inc.

www.idt.com

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800-345-7015

408-284-8200

Fax: 408-284-2775

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www.idt.com/go/clockhelp

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