MSFS6 [MSI]

Selectable Lowpass/Bandpass Filter;


型号：	MSFS6
厂家：	Mixed Signal Integration
描述：	Selectable Lowpass/Bandpass Filter
文件：	总8页 (文件大小：96K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

03/ 2001

S e l e ct a b l e Lo w p a s s / B a n d p a s s F i l t e r

D a t a S h e e t

Fe a t u r e s

D e s cr i p t i o n

Six Filter Types In One Package

No External Components

Switched-Capacitor Filters

Low Power Operation

Low Voltage Operation

Input Multiplexor

Adjustable Gain 0, 10 or 20 dB

Small Package Size

Low Cost

The selectable lowpass/ bandpass filter IC Is a

CMOS chip that can be configured for either a

lowpass or a bandpass filte r. The lowpass

response can be a 7 pole Butterworth, Elliptic

or Bessel filter. The band pass response can be

a six pole full, third or sixth octave bandpass

filter. The device uses switched-capacitor fil-

ters and no external components (except for

decoupling capacitors) are required, Only an

external CMOS level clock is needed.

On Chip Power Save Pin

ANSI Compatible Bandpass

A four input multiplexor and externally selecta-

ble gain setting pin, along with a power down

and clock to corner ratio select pin are included

in the 16 pin version. An 8 pin version is also

available for PC board area savings. Typical

current consumption is as low as 200 uA and

the minimum operating voltage is 2.7 volts,

making the device ideal for portable applica-

tions. MSFS3, MSFS4 and MSFS6 are low cur-

rent, lower frequency versions.

Ap p l i ca t i o n s

Spectrum Analyzers

General Purpose Systems

Portable Systems

Anti-Alias Filters

Reconstruction Filters

Telecommunications

Tracking Filters

Harmonic Analysis

Noise Analysis

Data Communication

Wireless Applications

Lo w p a s s R e s p o n s e s

Ba n d p a s s R e s p o n s e s

Web Site “www.mix-sig.com”

03/ 2001

S e l e ct a b l e Lo w p a s s / B a n d p a s s F i l t e r

D a t a S h e e t

Ele ctr ica l Ch a r a cte r istics_______

(VDD = +5.0V, T = 25 C)

PARAMETER

DC Specifications

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Operating Voltage

Supply Current

Power Down Current

AC Specifications

Gain

VDD

IDD

IPD

2.7

5.5

1.5

MSFS1, MSFS2, MSFS5

MSFS3, MSFS4, MSFS6

MSFS2, MSFS4, PD = 1

200

150

300

-0.5

0.5

uVrms

Noise

Distortion

To 1/ 2 Sample

A weighted

1 kHz

250

-72

4.5

THD

Signal Swing

Input Impedance

Output Drive

V p-p

Mohm

ZIN

Output Impedance

Output Capacitive Load

Clock to Corner

Center Frequency Range

Ripple

500

ohm

MSFS5, MSFS6

MSFS1, MSFS3

49.5

100

101

50.5

101

50.5

MSFS2, MSFS4, Fo=1

MSFS2, MSFS4, Fo=0

MSFS1, MSFS2, MSFS5 0.001

MSFS3, MSFS4, MSFS6 0.001

100

49.5

kHz

Elliptic Lowpass

Full Octave

Third Octave

0.2

Sixth Octave

Stop Band Rejection

Elliptic Lowpass

Bessel Lowpass

40 dB Bandwidth

Full Octave

Normalized Fo

0.3

0.6

1.67

1.32

Third Octave

Sixth Octave

0.76

Bandpass Q

Full Octave Q

Third Octave

Sixth Octave

1.5

4.5

Web Site “www.mix-sig.com”

03/ 2001

S e l e ct a b l e Lo w p a s s / B a n d p a s s F i l t e r

D a t a S h e e t

Filte r Se le ctio n ________________

G a in a n d Fr e q u e n cy Se le ctio n ____

The filter type is selected using the two filter select pins,

TYPE and FSEL, FSEL is a CMOS level pin that selects

lowpass or bandpass (lowpass = 0, bandpass = 1). TYPE

Is a tertiary control pin that selects the filter response.

State 0 is VSS, state 1 is GND and state 2 is VDD.

The Gain control pin G is a tertiary control pin where

state 0 is VSS, state 1 is GND level and state 2 is VDD.

Gain

OdB

10dB

20dB

TYPE

Lowpass

Butterworth

Bessel

Bandpass

Full Octave

Third Octave

Sixth Octave

The frequency control pin F0 is a CMOS level pin where

high is clock to corner of 100 to 1 (200 to 1 for Bessel)

and low is clock to corner of 50 to 1 (100 to 1 for Bessel).

Elliptic

P in De scr ip tio n ________________

P i n Co n f i g u r a t i o n

1. TYPE

2. S2

3. CLK

4. G

Filter Response Select Pin.

Input Multiiplexor Select Pin

Clock Input

FSEL

OUT

TYPE

CLK

Gain Select Pin

8 P in

5. VDD

Positive Power Supply, Typically 2.5

Volts for Split Supply 5.0 Volts for

Single SuppLy

Power Down Pin, CMOS level,

Hi = Power Down

GND

VSS

VDD

6. PD

7, VSS

Negative Power Supply, Typically -2.5

Volts for Split Supply. 0 Volts for Single

Supply

8. F0

9. GND

Clock to Corner Select Pin

GND Pin, OV for Split Supplies

2.5 Volts Typical for Single Supply

Input 1, Select Code 00

Input 2, Select Code 01

Input 3, Select Code 10

Input 4, Select Code 11

Selects Filter.

TYPE

OUT

FSEL

CLK

10. IN1

11. IN2

12. IN3

13. IN4

14. FSEL

IN4

IN3

VDD

IN2

IN1

O = Low Pass, 1 = Bandpass

Filter Output

Input Multiplexor Select Pin

VSS

1 6 P in

15. Out

16. S1

GND

Web Site “www.mix-sig.com”

03/ 2001

S e l e ct a b l e Lo w p a s s / B a n d p a s s F i l t e r

D a t a S h e e t

VCC

47kohm

100nF

FSEL

OUT

TYPE

CLK

LOWPASS_BANDPASS

FILTER_OUTPUT

FILTER_INPUT

GND

VSS

VDD

MSFS1_3_5_6

BU_BE_EL_FL_3_6

300kHz 5V

100nF

Ty p ica l Ap p lica tio n -Sin g le Su p p ly O p e r a tio n

Web Site “www.mix-sig.com”

03/ 2001

S e l e ct a b l e Lo w p a s s / B a n d p a s s F i l t e r

D a t a S h e e t

VCC

100nF

47kohm

TYPE

BU_BE_EL_FL_3_6

SELECT3_4

SELECT_1_2

OUT

FSEL

IN4

FILTER_OUTPUT

LOWPASS_BANDPASS

INPUT_4

CLK

100nF

0_10_20dB

POWERDOWN

50_100

VDD

IN3

MSFS2_4

100nF

IN2

INPUT_3

INPUT_2

INPUT_1

VSS

IN1

GND

100nF

1MHz 5V

Ty p ica l Ap p lica tio n -Sin g le Su p p ly O p e r a tio n

Web Site “www.mix-sig.com”

03/ 2001

S e l e ct a b l e Lo w p a s s / B a n d p a s s F i l t e r

D a t a S h e e t

VDD

VSS

2.5V

-2.5V

FSEL

OUT

TYPE

CLK

LOWPASS_BANDPASS

FILTER_OUTPUT

FILTER_INPUT

GND

VSS

VDD

MSFS1_3_5_6

BU_BE_EL_FL_3_6

100nF

P2V5_N2V5_300kHz

Ty p ica l Ap p lica tio n -Du a l Su p p ly O p e r a tio n

Web Site “www.mix-sig.com”

03/ 2001

S e l e ct a b l e Lo w p a s s / B a n d p a s s F i l t e r

D a t a S h e e t

VDD

2.5V

VSS

-2.5V

100nF

TYPE

BU_BE_EL_FL_3_6

SELECT3_4

SELECT_1_2

CLK

OUT

FSEL

IN4

FILTER_OUTPUT

LOWPASS_BANDPASS

INPUT_4

0_10_20dB

POWERDOWN

50_100

VDD

IN3

MSFS2_4

IN2

INPUT_3

INPUT_2

INPUT_1

VSS

IN1

GND

P2V5_N2V5_300kHz

100nF

Ty p ica l Ap p lica tio n -Du a l Su p p ly O p e r a tio n

Web Site “www.mix-sig.com”

03/ 2001

S e l e ct a b l e Lo w p a s s / B a n d p a s s F i l t e r

D a t a S h e e t

Blo ck Dia g r a m ________________

IN1

IN2

IN3

IN4

SCF

Section

One

Adjustable

Gain

Input

MUX

Filter

and

Clock

Select

(TYPE, FSEL, Fo)

Single

Out

SCF

Section

Three

SCF

Section

Two

Pole

Lowpass

Buffer

Ab s o lu te M a x im u m Ra tin g s

D i g i t a l Le v e l s

Power Supply Voltage

Storage Temperature

Operating Temperature

+6V

-60 to +150 C

0 to 7 0 C

All the clock and control pins (except TYPE and

G) are referenced between GND and VDD. In

single supply applications, the digital levels

should be CMOS levels from VSS to VDD. In dual

supply systems, the digital levels should be

CMOS levels from GND to VDD.

O r d e r in g In fo r m a tio n __________

Part Number

Package

Clock to Corner Ratio

MSFS1P

MSFS2P

MSFS3P

MSFS4P

MSFS5P

MSFS6P

MSFS1S

MSFS2S

MSFS3S

MSFS4S

MSFS5S

MSFS6S

8 Pin DIP

16 Pin DIP

8 Pin DIP

16 Pin DIP

8 Pin DIP

50 or 100

100

50 or 100

100

I n p u t S e l e ct i o n

The input is selected using the Input Select Pins

S1 and S2.

8 Pin DIP

Input

8 Pin SOIC

16 Pin SOIC

8 Pin SOIC

16 Pin SOIC

8 Pin SOIC

100

Web Site “www.mix-sig.com”

Mixed Signal Integration Corporation reserves the right to change any product or specification without notice at any time. Mixed Signal Integration

products are not designed or authorized for use in life support systems. Mixed Signal Integration assumes no responsibility for errors in this docu-

ment.

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