SP4501EY [SIPEX]

EL Plus Piezo Driver; EL加压电驱动器


型号：	SP4501EY
厂家：	SIPEX CORPORATION
描述：	EL Plus Piezo Driver EL加压电驱动器驱动器
文件：	总13页 (文件大小：138K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

SP4501

EL Plus Piezo Driver

■ Integrated EL Plus Piezo Driver For

Portable Electronic Devices

■ Reduces System Cost, Size & Compo-

nent Count

■ +2.2V to +6.0V Battery Operation

■ A Single External Coil Drives Both the

EL Lamp and Piezotransducer Circuitry

■ Piezotransducer Can Be Driven By an

External Clock or Internal Clock

■ A Single Resistor Controls the Internal

Oscillator

■ DC-to-AC Inverter Produces Up To

200V_P-Pto Drive EL Lamps

■ DC-to-AC Inverter Produces Waveform

to Drive Piezotransducer

■ Low Current Standby Mode Draws Less

than 1µA

APPLICATIONS

■ PDA's

■ Pagers

■ GPS

■ Hand Held Medical Devices

DESCRIPTION

TheSP4501providesdesignerswithbothanelectroluminescentlampdriverforbacklightingand

a piezotransducer driver to generate audio alert tones. The integration of an EL lamp driver and

a piezotransducer driver in a single cost-effective IC reduces system cost, board space

requirements and component count. The SP4501 is ideal for portable applications such as

pagers, electronic games, PDAs, medical equipment, and designs with liquid crystal displays,

keypads, and backlit readouts. The SP4501 will operate from a +2.2V to +6.0V source. The

device features a low power standby mode which draws less than 1µA (typical). The frequency

of the internal oscillator is set with a single external resistor. The piezotranducer driver can be

driven with the internally generated clock signal or an external clock signal provided by the

designer. A single inductor is required to generate the high voltage AC used to drive the EL lamp

and the piezotransducer. All input pins are ESD protected with diodes to V_DDand V_SS.

VDD

ELEN

PZEN

ROSC

13 EL2

EL1

PZCK

11 PZ2

10 PZ1

SP4501

PZCK

no connect

CAP

COIL

VSS

11-14-00

SP4501 EL Plus Piezo Driver

STORAGE CONSIDERATIONS

ABSOLUTE MAXIMUM RATINGS

These are stress ratings only and functional operation of

the device at these ratings or any other above those

indicated in the operation sections of the specifications

below is not implied. Exposure to absolute maximum

rating conditions for extended periods of time may affect

reliability.

Storage in a low humidity environment is preferred.

Large high density plastic packages are moisture sen-

sitive and should be stored in Dry Vapor Barrier Bags.

Prior to usage, the parts should remain bagged and

stored below 40°C and 60%RH. If the parts are

removed from the bag, they should be used within 48

hours or stored in an environment at or below 20%RH.

If the above conditions cannot be followed, the parts

should be baked for four hours at 125°C in order

remove moisture prior to soldering. Sipex ships prod-

uct in Dry Vapor Barrier Bags with a humidity indicator

cardanddesiccantpack. Thehumidityindicatorshould

be below 30%RH.

Power Supply, V_DD.................................................7.0V

Input Voltages, Logic.....................-0.3V to (V_DD+0.3V)

Lamp Outputs...................................................220V_P-P

Operating Temperature.........................-40˚C to +85˚C

Storage Temperature..........................-65˚C to +150˚C

Power Dissipation Per Package

14-pin SOIC

(derate 8.33mW/˚C above +70˚C)....................700mW

14-pin TSSOP

The information furnished by Sipex has been carefully

reviewed for accuracy and reliability. Its application or

use,however,issolelytheresponsibilityoftheuser. No

responsibility for the use of this information become

part of the terms and conditions of any subsequent

salesagreementwithSipex. Specificationsaresubject

tochangewithoutnoresponsibilityforanyinfringement

of patents or other rights of third parties which may

resultfromitsuse. Nolicenseorotherproprietaryrights

are granted by implication or otherwise under any

patent or patent rights of Sipex Corporation.

(derate 9.96mW/˚C above +70˚C)....................800mW

SPECIFICATIONS

V_DD= +3.0V, L = 470µH, C_LAMP= 8nF, C_PZ= 16nF, CINT = 1800pF R_OSC= 500kΩ, and T_AMB= 25˚C unless otherwise noted.

PARAMETER

Supply Voltage, V_DD

MIN.

TYP.

MAX.

CONDITIONS

UNITS

2.2

3.0

6.0

Supply Current, I_COIL+I_DD

Standby Current

L_COIL= 470µF

µA

1.0

0.1

Input Voltage for

ELEN and PZEN, PZCK, PZCK

LOW

HIGH

3.0

0.25

2.75

37.0

Input Impedance

ELEN and PZCK

PZEN and PZCK

MΩ

V_ELEN= 0V

Inductor Drive

Coil Frequency, f_OSC

Duty Cycle of f_OSC

45.7

54.7

100

kHz

Peak Coil Current

EL Lamp/ Piezo Driver Output

Piezo Output Voltage, V_PZ

f_piezo= 3.1kHz, PZEN = HIGH;

T_AMB= +25^OC

T_AMB= -40^OC to +85^OC

Lamp Output Voltage, V_EL

EL Lamp Frequency, f_LAMP

Piezo Frequency, f_PZ

110

357

2.9

T_AMB= +25^OC

T_AMB= -40^OC to +85^OC

289

2.3

427

3.4

T_AMB= +25^OC

T_AMB= -40^OC to +85^OC

PZEN = HIGH;

T_AMB= +25^OC

kHz

T_AMB= -40^OC to +85^OC

11-14-00

SP4501 EL Plus Piezo Driver

Electroluminescent Technology

The internal diode forward biases when the coil

voltagerises abovetheH-Bridgevoltageandthe

energy enters the EL lamp. Each pulse increases

the voltage across the lamp in discrete steps.

An EL lamp consists of a thin layer of phospho-

rous material sandwiched between two strips of

plastic which emits light (flouresces) when a

high voltage AC signal is applied across it. It

behaves primarily as a capacitive load. Long

periods of DC voltage applied to the material

tendtoreduceitslifetime. Withtheseconditions

in mind, the ideal signal to drive an EL lamp is a

high voltage sine wave. Traditional approaches

toachievethistypeofwaveformincludediscrete

circuits incorporating a transformer, transistors

and several resistors and capacitors. This ap-

proach is large and bulky and cannot be imple-

mented in most handheld equipment. Sipex

offers low power single chip driver circuits spe-

cificallydesignedtodrivesmalltomediumsized

electroluminescent panels. Sipex EL drivers

provide a differential AC voltage without a DC

offset to maximize EL lamp lifetime. The only

additionalcomponentsrequiredfortheELdriver

circuitry are an inductor, resistor and capacitor.

As the voltage approaches its maximum, the

steps become smaller. (see figure 4).

The brightness of the EL lamp output is directly

relatedtoenergyrecoveryintheboostconverter.

There are many variations among coils such as

magnetic core differences, winding differences

and parasitic capacitances. For suggested coil

suppliers refer to page 10.

Oscillator

Theinternaloscillatorgeneratesahighfrequency

clock used by the boost converter and H-Bridge.

An external resistor from VDD to ROSC sets the

oscillatorfrequency. Typicallya500kΩresistor

sets the frequency to 45.7kHz. The high fre-

quency clock directly controls the coil switch.

This high frequency clock is divided by 128 to

generate a low frequency clock which controls

the EL H-Bridge and sets the EL lamp fre-

quency. The high frequency clock is divided by

16 to create a medium frequency clock to drive

the piezo H-Bridge. The oscillator has low

sensitivity to temperature and supply voltage

variations, increasing the performance of the EL

driver over the operating parameters.

Electroluminescent backlighting is ideal when

used with LCD displays, keypads or other back-

lit readouts. EL lamps uniformly light an area

without creating any undesirable "hot spots" in

the display. Also, an EL lamp typically con-

sumes less power that LED's or incandescent

bulbs in similar lighting situations. These fea-

tures make EL ideal for attractive, battery pow-

ered products.

Dual H-Bridge

The H-Bridge consists of two SCR structures

and two NPN transistors that control how the

lamp is charged. Setting ELEN to HIGH acti-

vates the EL H-Bridge. The EL driver illumi-

nates the lamp by applying the high voltage

supply of the boost converter to the lamp termi-

nals through the H-Bridge and then switching

the terminal polarity between the high voltage

supply and ground at a constant frequency. This

applies an AC voltage to the lamp that is twice

the peak output voltage of the boost driver. An

AC voltage greater than the 40V across the

terminals of the lamp is necessary to adequately

illuminate the EL lamp. The piezo driver output

applies an AC voltage to the piezotransducer in

a similar manner. The piezo driver operates in

two modes.

THEORY OF OPERATION

Coil Switch

The SP4501 has an inductor-based boost con-

verter to generate the high voltage used to drive

the EL lamp. Energy is stored in the inductor

according to the equation E_L= 1/2 (LI_pk) where

I_pk= (t_ON) (V_BATT- V_CEsat) /L. An internal oscilla-

tor controls the coil switch. During the time the

coil switch is on, the coil is connected between

V_DDand the saturation voltage of the coil switch

and a magnetic field develops in the coil. When

the coil switch turns off, the switch opens, the

magnetic field collapses and the voltage across

the coil rises.

11-14-00

SP4501 EL Plus Piezo Driver

AlogicHIGHonpinPZENwillenablethepiezo

driver and apply a waveform to the

piezotransducer until PZEN is released. This

waveform will produce a tone that is 1/16 the

frequency of the internal oscillator. Alternately,

anexternalclockappliedtoPZCKorPZCKpins

will enable the piezo driver and generate a tone

at the applied clock frequency.

Larger lamps require more energy to illuminate.

Lowering the oscillator frequency allows more

energy to be stored in the coil during each coil

switch cycle and increases lamp brightness. The

oscillator frequency can be lowered to a point

where the lamp brightness then begins to drop

because the lamp frequency must be above a

criticalfrequency(approx.100Hz)tolight. Lamp

color is affected by the switching frequency of

the EL driver. Green EL lamps will emit a more

blue light as EL lamp frequency increases.

The external applied clock frequency should be

greater than f_osc/64. To put the circuit in an

inactive state it is required that PZCK remain at

logic LOW and PZCK remain at logic HIGH.

The piezo driver and the EL driver may be

operatedsimultaneouslybutwithdecreasedlight

output from the EL panel.

Noise Decoupling on Logic Inputs

If ELEN, PZEN, PZCK or PZCK are connected

totracessusceptibletonoise,itmaybenecessary

to connect bypass capacitors of approximately

10nF between ELEN and VSS, PZEN and VSS,

PZCK and VSS, and PZCK and VDD. If these

inputs are driven by a microprocessor which

provides a low impedance HIGH and LOW

signal, then noise bypassing may not be neces-

sary. If some inputs are unused (as PZCK and

PZCK may be) then these inputs should be tied

to the power supply that sets the input to an

inactive state.

DESIGN CONSIDERATIONS

Inductor Selection

If limiting peak current draw from the power

supply is important, small coil values (<1mH)

mayneedahigheroscillatorfrequency. Inductor

current ramps faster in a lower inductance coil

than a higher inductance coil for a given coil

switch on time period, resulting in higher peak

coil currents.

Increasing Light Output

EL lamp light output can be improved by con-

necting a fast recovery diode from the COIL pin

to the CAP pin. The internal diode is bypassed

resulting in an increase in light output at the EL

lamp. We suggest a fast recovery diode such as

the industry standard 1N4148.

It is important to observe the saturation current

rating of a coil. When this current is exceeded,

the coil is incapable of storing any more energy

andthenceasestoactasaninductor. Instead, the

coil behaves according to its series DC resis-

tance. Sincesmallcoils(<1mH)haveinherently

low series DC resistance, the current can peak

dramatically through a small coil during satura-

tion. This situation results in wasted energy not

stored in the magnetics of the coil but expressed

as heating which could lead to failure of the coil.

TheoptimalvalueofC_INTwillvarydependingon

the lamp parameters and coil value. Lower C_INT

values can decrease average supply current but

higher C_INTvalues can increase lamp brightness.

This is best determined by experimentation. A

rule of thumb is larger coils (1mH) are paired

with a smaller C_INT(680pF) and smaller coils

(470µH) are paired with a larger C_INT(1800pF).

Generally, selecting a coil with lower series DC

resistance will result in a system with higher

efficiency and lamp brightness.

Changing the EL lamp Output Voltage

Waveform

Lamp Effects

EL lamp parameters vary between manufactur-

ers. Series DC resistance, lighting efficiency

and lamp capacitance per area differ the most

overall.

Designers can alter the sawtooth output voltage

waveformtotheELlamp. Increasingthecapaci-

tance of the integration capacitor, C_INT, will inte-

grate the sawtooth waveform making it

11-14-00

SP4501 EL Plus Piezo Driver

appear more like a square wave.

Printed Circuit Board Layout Sugges-

tions

TheELdriver'shigh-frequencyoperationmakes

PCB layout important for minimizing electrical

noise. Keep the IC's GND pin and the ground

leads of C1 and C_INTless than 0.2in (5mm) apart.

Also keep the connections to the COIL pin as

short as possible. To maximize output power

and efficiency and minimize output ripple volt-

age, use a ground plane and solder the IC's VSS

pin directly to the ground plane.

EL Lamp Driver Design Challenges

There are many variables which can be opti-

mized for specific applications. The amount of

light emitted is a function of the voltage applied

tothelamp,thefrequencyatwhichisapplied,the

lamp material, the lamp size, and the inductor

used. Sipex supplies characterization charts to

aid the designer in selecting the optimum circuit

configuration.

Sipex will perform customer application evalu-

ations, using the customer's actual EL lamp to

determine the optimum operating conditions for

specific applications. For customers consider-

inganELbacklightingsolutionforthefirsttime,

Sipex is able to provide retrofits to non-backlit

products for a thorough electrical and cosmetic

evaluation. PleasecontactyourlocalSipexsales

Representative or the Sipex factory directly to

initiate this valuable service.

11-14-00

SP4501 EL Plus Piezo Driver

COIL

CAP

SP4501

OSC

SCR2

SCR1

SCR3

SCR4

ROSC

LAMP

FF3

FF4

OSC

LAMP

ELEN

PZEN

INT CLOCK

SELECTION

LOGIC

SELECT

EXT CLOCK

CLOCK

SENSORY

CIRCUIT

PZCK

VSS

PZCK

EL1 EL2

PZ1 PZ2

Figure 1: Internal Block Diagram of SP4501

+3V

ELEN

0.1µF

500kΩ

EL2

PZEN

7.3nF, 2.5in²

ROSC

EL1

PZ2

PZCK

N/C

10nF

SP4501

16nF

PZ1

1800pF

CAP

1N4148

COIL

+3V

820µH*

*DC Resistance 13Ω*

Figure 2: Test Circuit of the SP4501

11-14-00

SP4501 EL Plus Piezo Driver

PERFORMANCE CHARACTERISTICS

100

600

550

6.0

5.5

Freq.

5.0

4.5

500

450

400

V_CAP,pk

(

4.0

3.5

3.0

2.5

2.0

350

300

250

200

(

I_DD

Lumi.

1.5

1.0

150

100

200

400

600

800

1000

200

400

600

800

1000

R_OSC(kΩ)

Figure 4: Lamp Frequency and Luminance vs.

Oscillator Frequency.

Figure 3: Supply Current and Cap Pin Voltage vs.

Oscillator Resistance.

100

10.0

9.0

8.0

7.0

6.0

140

120

100

14.0

12.0

10.0

8.0

V_CAP,pk

Lumi.

(

V_CAP,pk

5.0

4.0

3.0

2.0

1.0

0.0

I_DD

6.0

(

Lumi.

I_DD

4.0

2.0

0.0

400 500 600 700 800 900 1000

2.0

3.0

4.0

5.0

6.0

Inductor Value (µH)

V_DD(V)

Figure 5: Supply Current and Luminance vs. Supply

Voltage.

Figure 6: Supply Current and Luminance vs. Inductor

Value.

1000

2000

3000

4000

5000

6000

7000

frequency (Hz)

Figure 7: Piezo Output Voltage vs. PZCK Input

Frequency.

11-14-00

SP4501 EL Plus Piezo Driver

VBATT

ELEN

PZEN

470µH

COIL

CAP

SP4501

OSC

*D1

1N4148

500kΩ

ROSC

0.1µF

*C2

10nF

INT

1800pF

PZCK

*optional devices

EXT

CLK

HIGH = VDD

12 13

LOW = VSS

PZ1

PZ2

EL1

EL2

CPZ

EL Lamp

Figure 8: Typical Application Circuit of the SP4501

Figure 9: Typical EL Lamp Voltage Waveform

11-14-00

SP4501 EL Plus Piezo Driver

PIN ASSIGNMENTS

Pin 7 — V_SS— Power Supply Ground. Connect

to the lowest circuit potential, typically ground

Pin 1 — ELEN — Electroluminescent Lamp

Enable. When driven HIGH, this input pin

enables the EL driver outputs. This pin has

an internal pulldown resistor.

Pin 8 — COIL — Coil. The inductor for the

boost converter is connected from V_BATTto

this pin.

Pin2—PZEN—PiezoEnable. Whenthisinput

pin is driven HIGH, the piezo operates at a

frequency f_OSC/16. When this input pin is

LOW, the clock signals applied to PZCK or

PZCK will drive the internal piezo circuitry.

This pin has an internal pulldown resistor.

Pin 9 — CAP — Integrator Capacitor. An

integrator capacitor connected from this pin

togroundfiltersoutanycoilswitchingspikes

or ripple present in the output waveform to

the EL lamp. Connecting a fast recovery

diode from COIL to CAP increases the light

output of the EL lamp.

Pin3—R_OSC—OscillatorResistor. Connecting

a resistor between this pin and V_DDsets the

frequency of the internal clock.

Pin 10 — PZ1 — Piezotransducer Output. Con-

nect this pin to the piezotransducer.

Pin 4 — PZCK — Inverse Piezo Clock. When

PZEN is LOW, the internal piezo circuit will

operate at the frequency of the clock signal

appliedtothisinput pin. Forthe piezodriver

to rest in the inactive mode, it is required that

PZCK remains at logic HIGH. This pin has

an internal pullup resistor.

Pin 11 — PZ2 — Piezotransducer Output. Con-

nect this pin to the piezotransducer.

Pin 12 — EL1 — Electroluminescent Lamp

Output. Connect this pin to the EL lamp.

Pin 13 — EL2 — Electroluminescent Lamp

Output. Connect this pin to the EL lamp.

Pin 5 — PZCK — Piezo Clock. When PZEN is

LOW, the internal piezo circuit will operate

atthefrequencyoftheclocksignalappliedto

this input pin. For the piezo driver to rest in

the inactive mode, it is required that PZCK

remains at logic LOW. This pin has an

internal pulldown resistor.

Pin 14 — V_DD— Positive Power Supply. This

pin should be bypassed with a 0.1µF capaci-

tor.

Pin 6 — No connect.

11-14-00

SP4501 EL Plus Piezo Driver

Coil Manufacturers

Hitachi Metals

Murata

Panasonic.

6550 Katella Ave

Cypress, CA 90630-5102

Phone: (714) 373-7366

Fax: (714) 373-7323

Material Trading Division

2101 S. Arlington Heights Road,

Suite 116

Arlington Heights, IL 60005-4142

Phone: 1-800-777-8343 Ext. 12

(847) 364-7200 Ext. 12

Fax: (847) 364-7279

2200 Lake Park Drive, Smyrna

Georgia 30080 U.S.A.

Phone: (770) 436-1300

Fax: (770) 436-3030

Murata European

Sumida Electric Co., LTD.

5999, New Wilke Road,

Suite #110

Rolling Meadows, IL,60008 U.S.A.

Phone: (847) 956-0666

Fax: (847) 956-0702

Holbeinstrasse 21-23, 90441

Numberg, Postfachanschrift 90015

Phone: 011-4991166870

Fax: 011-49116687225

Hitachi Metals Ltd. Europe

Immernannstrasse 14-16, 40210

Dusseldorf, Germany

Contact: Gary Loos

Phone: 49-211-16009-0

Fax: 49-211-16009-29

Murata Taiwan Electronics

225 Chung-Chin Road, Taichung,

Taiwan, R.O.C.

Phone: 011 88642914151

Fax: 011 88644252929

Sumida Electric Co., LTD.

4-8, Kanamachi 2-Chrome,

Katsushika-ku, Tokyo 125 Japan

Phone: 03-3607-5111

Hitachi Metals Ltd.

Kishimoto Bldg. 2-1, Marunouchi

2-chome, Chiyoda-Ku, Tokyo, Japan

Contact: Mr. Noboru Abe

Phone: 3-3284-4936

Fax: 03-3607-5144

Murata Electronics Singapore

200 Yishun Ave. 7, Singapore

2776, Republic of Singapore

Phone: 011 657584233

Sumida Electric Co., LTD.

Block 15, 996, Bendemeer Road

#04-05 to 06, Singapore 339944

Republic of Singapore

Phone: 2963388

Fax: 3-3287-1945

Fax: 011 657536181

Hitachi Metals Ltd. Singapore

78 Shenton Way #12-01,

Singapore 079120

Contact: Mr. Stan Kaiko

Phone: 222-8077

Murata Hong Kong

Fax: 2963390

Room 709-712 Miramar Tower, 1

Kimberly Road, Tsimshatsui,

Kowloon, Hong Kong

Phone: 011-85223763898

Fax: 011-85223755655

Sumida Electric Co., LTD.

14 Floor, Eastern Center, 1065

King's Road, Quarry Bay,

Hong Kong

Phone: 28806688

Fax: 25659600

Fax: 222-5232

Hitachi Metals Ltd. Hong Kong

Room 1107, 11/F., West Wing,

Tsim Sha. Tsui Center 66

Mody Road,Tsimshatsui East,

Kowloon, Hong Kong

Phone: 2724-4188

Fax: 2311-2095

NEC Corporation

Yumi Saskai

EL Lamp Manufacturers

Polarizers/transflector Mnfg.

7-1, Shiba 5 Chome, Minato-ku,

Tokyo 108-01, Japan

Phone: (03) 3798-9572

Fax: (03) 3798-6134

Leading Edge Ind. Inc.

11578 Encore Circle

Minnetonka, MN 55343

Phone 1-800-845-6992

Nitto Denko

Yoshi Shinozuka

Bayside Business Park 48500

Fremont, CA. 94538

Phone: 510 445 5400

Fax: 510 445-5480

Seiko Precision

Shuzo Abe

1-1, Taihei 4-Chome,

Sumida-ku, Tokyo, 139 Japan

Phone: (03) 5610-7089

Fax: (03) 5610-7177

Midori Mark Ltd.

1-5 Komagata 2-Chome

Taita-Ku 111-0043 Japan

Phone: 81-03-3848-2011

Top Polarizer- NPF F1205DU

Bottom - NPF F4225

or (F4205) P3 w/transflector

Luminescent Systems inc. (LSI)

4 Lucent Dr.

Lebanon, NH. 03766

Phone: (603) 643-7766

Fax: (603) 643-5947

Transflector Material

Astra Products

Mark Bogin

Gunze Electronics

2113 Wells Branch Parkway

Austin, TX 78728

Phone: (512) 752-1299

Fax: (512) 252-1181

P.O. Box 479

Baldwin, NJ 11510

Phone (516)-223-7500

Fax (516)-868-2371

11-14-00

SP4501 EL Plus Piezo Driver

PACKAGE: PLASTIC NARROW

SMALL OUTLINE

(NSOIC)

DIMENSIONS

in. (mm)

14–PIN

Minimum/Maximum

0.053/0.069

(1.346/1.748)

0.004/0.010

(0.102/0.249)

0.014/0.018

(0.360/0.460)

0.337/0.344

(8.552/8.748)

0.150/0.157

(3.802/3.988)

0.050 BSC

(1.270 BSC)

0.228/0.244

(5.801/6.198)

0.016/0.050

(0.406/1.270)

0°/8°

(0°/8°)

11-14-00

SP4501 EL Plus Piezo Driver

PACKAGE: PLASTIC THIN SMALL

OUTLINE

(TSSOP)

DIMENSIONS

in inches (mm)

14–PIN

Minimum/Maximum

- /0.043

( /1.10)

0.002/0.006

(0.05/0.15)

0.007/0.012

(0.19/0.30)

0.193/0.201

(4.90/5.10)

0.169/0.177

(4.30/4.50)

0.026 BSC

(0.65 BSC)

0.126 BSC

(3.20 BSC)

0.020/0.030

(0.50/0.75)

0°/8°

ORDERING INFORMATION

Temperature Range

Model

Package Type

SP4501EN .............................................. -40˚C to +85˚C ....................................... 14-Pin NSOIC

SP4501EY .............................................. -40˚C to +85˚C ...................................... 14-Pin TSSOP

SP4501NEB ............................................................................................ NSOIC Evaluation Board

Co rp o ra tio n

SIGNAL PROCESSING EXCELLENCE

Sipex Corporation

Headquarters and Main Offices

22 Linnell Circle

Billerica, MA 01821

TEL: (978) 667-8700

FAX: (978) 670-9001

e-mail: sales@sipex.com

233 South Hillview Drive

Milpitas, CA 95035

TEL: (408) 934-7500

FAX: (408) 935-7600

Sipex Corporation reserves the right to make changes to any products described herein. Sipex does not assume any liability arising out of the

application or use of any product or circuit described hereing; neither does it convey any license under its patent rights nor the rights of others.

SP4501EY [SIPEX]

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SP450M0015B1F31325

SP450M0022A2SJ1625

SP450M0022A5F81625

SP450M0022B1SM1325

SP450M0022B1SV1625

SP450M0022B2FM1325

SP450M0022B5SQ1625