MSELP MSI | Alldatasheet

Document overview

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Technical content

Features

No response setting resistors Plastic DIP or S.O. packages available Switched Capacitor Filters 3.3 or 5 Volts Operation Operates from internal or external clock Includes two uncommitted op amps Power down mode Selectable clock to corner frequency ratio

Applications

General Purpose Low-Pass Filters Absolute Maximum Ratings Power Supply Voltage +6 V Storage Temperature -60 to +150?C Operating Temperature -40 to +85?C MSELPP 14 Pin Dip -20 to +75?C MSELPN 14 Pin 150 mil SOIC -20 to +75?C Part Number Package Operating Temperature CLOCK LOW PASS FILTER OA1 OA2INV2 NINV GND FOUT FIN CLK R INV1 OUT1 OUT2 PS FO

Switched Capacitor Elliptic Lowpass Filter Data Sheet (VDD = +5.0V, T = 25 C)o Web Site “www.mix-sig.com” © 2004 Mixed Signal Integration 2 PARAMETER SYMBOL CONDTIONS MIN TYP MAX UNITS DC Specifications Operating Voltage VDD 2.7 5.5 V Supply Current IDD PS = 0.5 State 0.2 0.6 1.0 mA PS = 1 State 0.8 1.0 2.0 mA PS = 0 State 50 250 400 uA AC Specifications Gain Av Fclk = 250 kHz -1.00 0 1.00 dB Maximum Corner Frequency fo max PS = 0.5 State 3 5 kHz PS = 1 State FO=HIGH 10 20 Clock Feedthrough Pedestal to Pedestal - Filter Output Fclk = 1 MHz 10 mV (p-p) - Op Amp 1 Output 10 mV (p-p) - Op Amp 2 Output 10 mV (p-p) Clock to Corner fCLK/fo External Clock, FO = LOW 99 100 101 Hz/Hz External Clock, FO = HIGH 49 50 51 Hz/Hz Offset Voltage 20 100 mV Output Voltage Swing PS = 1 State, FO = LOW 3.5 4.0 V p-p Dynamic Range 82 dB Op Amp Specifications Input Offset Voltage Vos 10 mV Output Voltage Swing 4.5 Vp-p Slew Rate 6 V/uS DC Gain 70 dB Gain Bandwidth bw 1.2 MHz Level Shift Threshold VTL-to-VTH 1.1 1.3 1.7 V VTH-to-VTL 3.3 3.8 4.3 V VTL-to-VTH VDD = 2.7V 0.75 0.85 0.95 V VTH-to-VTL VDD = 2.7V 1.5 1.8 2.1 V Power Select Pin Operation State 1 High Power PS Voltage on PS Pin VDD V State 0.5 Low Power GND V State 0 Power Down See note VSS V Note: In external clock mode only. Power down is not available in on chip oscillator mode.

Switched Capacitor Elliptic Lowpass Filter Data Sheet Pin Configuration INV2 INV1 R VSS CLK FIN NINV OUT2 FOUT OUT1 GND VDD FO PS Web Site “www.mix-sig.com” © 2004 Mixed Signal Integration 3

1 NINV Second Op Amp Non Inverting Input

2 OUT2 Second Op Amp Output

3 FOUT Filter Output

4 OUT1 First Op Amp Output

5 GND Ground Pin, 0V for Split Supplies

Typically 2.5V for Single Supply

6 VDD Positive Power Supply, Typically

2.5V for Split Supplies, 5V for Single Supply

7 PS Power Select Pin

(See Electrical Characteristics)

8 FIN Filter Input

9 CLK Clock Input

10 VSS Negative Power Supply, Typically

-2.5V for Split Supplies, 0V for Single Supply

11 R Connection for the Clock Resistor

(NC when using external clock)

12 FO Clock to Corner Select Pin, CMOS

13 INV1 First Op Amp Inverting Input

14 INV2 Second Op Amp Inverting Input

Typically 2.5V for Single Supply 2.5V for Split Supplies, 5V for Single Supply (See Electrical Characteristics)

8 NC No Connection

9 NC No Connection

-2.5V for Split Supplies, 0V for Single Supply

13 R Connection for the Clock Resistor

(NC when using external clock)

14 FO Clock to Corner Select Pin, CMOS

15 INV1 First Op Amp Inverting Input

16 INV2 Second Op Amp Inverting Input

Switched Capacitor Elliptic Lowpass Filter Data Sheet MSELP Frequency Response -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 250 500 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 Frequency Gain MSELP Group Delay 0.00E+00 5.00E-04 1.00E-03 1.50E-03 2.00E-03 2.50E-03 3.00E-03 3.50E-03 4.00E-03 0 250 500 750 10001250 1500 1750 20002250 2500 27503000 Frequency Group Delay Web Site “www.mix-sig.com” © 2004 Mixed Signal Integration 4

Switched Capacitor Elliptic Lowpass Filter Data Sheet Comparison of Frequency Response -50 -40 -30 -20 -10 100 200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 Frequency Gain Typical Butterworth Filter MSELP Comparison of Group Delay 0.00E+00 5.00E-04 1.00E-03 1.50E-03 2.00E-03 2.50E-03 3.00E-03 3.50E-03 4.00E-03 100 200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 Frequency Delay MSELP Typical Butterworth Filter Web Site “www.mix-sig.com” © 2004 Mixed Signal Integration 5

Switched Capacitor Elliptic Lowpass Filter Data Sheet Web Site “www.mix-sig.com” © 2004 Mixed Signal Integration 6 Typical Application Circuit Schematic

Switched Capacitor Elliptic Lowpass Filter Data Sheet Web Site “www.mix-sig.com” © 2004 Mixed Signal Integration 7 Mixed Signal Integration Corporation reserves the right to 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.