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Technical content
TheMSVHFS1-6 is a selectable very high frequen- cy lowpass/bandpass filter CMOS IC. The low- pass response can be a 6 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 filters (SCF) and no external components (except for decoupling capacitors) are required, Two exter- nal clocks are needed for the mixer and filter functions. Lower current, and lower frequencies are pin selected. An externally selectable gain setting pin, along with a power down and clock to corner ratio select pin are included in the 16 pin version. Absolute Maximmumm Ratings Power Supply Voltage +3.5V Storage Temperature Range -60o to +150o C Operating Temperature Range -40o to +85o C Feaaturres Low Voltage: 3.0 VDC Six Filter Types In One Package No External Components Switched-Capacitor Filters Very High Frequency Filter Operation Selectable Gain 0, 10 or 20 dB Small Package Size On Chip Power Save Pin ANSI Compatible Bandpass Applicaations Spectrum Analyzers General Purpose Systems Portable Systems Anti-Alias Filters Telecommunications Tracking Filters Harmonic Analysis Noise Analysis Data Communication Wireless Applications MSVHFS1-6 Selecttable Very High Frequency LP//BP Filtter Datta Sheett ©2011-22014 Mixeed Signal Inteegratioon 1Weeb Sitee ““www.mix-ssig.coom”” Figure 1 Block Diagram
(VDD = +3.0V, T = 25 C) Sample rate is 2X clock to corner ratio ©2011-22014 Mixeed Signal Inteegratioon 2Weeb Sitee ““www.mix-ssig.coom”” PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS DC Specifications Operating Voltage VDD 3.0 3.3 V Supply Current IDD MSVHFS3,4,6 1.0 mA Supply Current IDD MSVHFS1,2,5 5.0 mA Supply Current in Power IDD PD PDown=High 200 μA Down Mode Filter AC Specifications Gain A V G=VSS -0.5 0 0.5 dB Gain with 10 dB Selected A V10dB G=1/2 VDD 10 dB Gain with 20 dB Selected A V20dB G= VDD 20 dB Noise e n To 1/2 Sample 200 μVrms Distortion THD 5MHz Butterworth -72 dB with 1 MHz Input Signal Swing V O 2.8 V PP Input Imedance Z IN 1.0 M Ω Output Drive I O 300 μA Output Impedance Z O 500 Ω Output Capacitive Load C OMAX 20 pF Clock to Corner FO=2 12.5 Clock to Corner FO=0 6,25 Center Frequency Range F O FO=0 PWR=High 0.00001 5 MHz Center Frequency Range F O FO=2 PWR=Low 0.00001 1 MHz Ripple Elliptic Lowpass, Bandpass 0.2 dB Stop Band Re jection Elliptic Lowpass 70 dB Bessel Lowpass 60 dB 40 dB Bandwidth Full Octave Normalized F C, 0.3 3 1/3 Octave Normalized F C 0.6 1.67 1/6 Octave Normalized F C 0.76 1.32 MSVHFS1-6 Selecttable Very High Frequency LP//BP Filtter Datta Sheett
Electrical Characteristics
The filter type is selected using the two filter se- lect pins, TYPE and FSEL, FSEL is a CMOS level pin that selects lowpass or bandpass response (lowpass = 0, bandpass = 2). TYPE Is a tertiary control pin that selects the filter response. State 0 is VSS, state 1 is GND and state 2 is VDD. TYPE Lowpass Bandpass
0 Butterworth Full Octave
1 Bessel Third Octave
2 Elliptic Sixth Octave
Gain and Frequency Selection The Gain select pin G is a tertiary control pin where state 0 is VSS, state 1 is GND level and state 2 is VDD. G Gain
0 OdB
The clock to corner select pin F0 is a CMOS level pin where HIGH is clock to corner of 12.5 to 1 (25 to 1 for Bessel) and LOW is clock to corner of 6.25 to 1 (12.5 to 1 for Bessel). The sample rate ratio is twice the clock to corner ratio (double sampling). ©2011-22014 Mixeed Signal Inteegratioon 4 Weeb Sitee ““www.mix-ssig.coom”” MSVHFS1-6 Selecttable Very High Frequency LP//BP Filtter Datta Sheett
- TYPE Filter Response Select Pin. 2. S2 Input Multiplexor Select Pin 3. CLK Square Wave Clock Input 4. G Gain Select Pin 5. VDD Positive Power Supply,Typically +1.5 Volts for Split Supply, +3.0 Volts for Single Supply 6. PD Power Down Pin, CMOS level, Hi = Power Down 7, VSS Negative Power Supply,Typically -1.5 Volts for Split Supply, 0 Volts for Single Supply 8. F0 Clock to Corner Select Pin 9. GND GND Pin, OV for Split Supplies +1.5 Volts Typical for Single Supply 10. FIN1 Filter Input 1 11. FIN2 Filter Input 2 12. FIN3 Filter Input 3 13. FIN4 Filter Input 4 14. FSEL Filter Select 2 = Bandpass; 0= Lowpass 15. OUT Filter Output
16 S1 Input Multiplexor Select Pin
Pin Configuration MSVHFS2/4 Pin Description MSVHFS1/3/5/6 1.. FSEL Filter Select 2. OUT Filter Output 3 TYPE Filter Response Select Pin. 4. CLK Square Wave Clock Input 5. VDD Positive Power Supply,Typically +1.5 Volts for Split Supply, +3.0 Volts for Single Supply 6, VSS Negative Power Supply,Typically -1.5 Volts for Split Supply, 0 Volts for Single Supply 7. AGND GND Pin, OV for Split Supplies +1.5 Volts Typical for Single Supply 8. FIN Filter Input Pin Configuration MSVHFS1/3/5/6
Ordering Information
Part Number Package Operating Tempeature MSVHFS1N SOIC-8 -40 o to +85o C MSVHFS2N SOIC-16 -40 o to +85o C MSVHFS3N SOIC-8 -40 o to +85o C MSVHFS4N SOIC-16 -40 o to +85o C MSVHFS5N SOIC-8 -40 o to +85o C MSVHFS6N SOIC-8 -40 o to +85o C All packages are 150 mil wide (Narrow SOIC) ©2011-22014 Mixeed Signal Inteegratioon 5 Weeb Sitee ““www.mix-ssig.coom”” MSVHFS1-6 Selecttable Very High Frequency LP//BP Filtter Datta Sheett TYPE FO AGND CLK G VDD PD VSSA FIN1 FIN3 FIN4 FSEL OUT FIN2 FSEL OUT TYPE CLK VDD VSS GND IN
+++ Selecttable Very High Frequency LP//BP Filtter Datta Sheett ©2011-22014 Mixeed Signal Inteegratioon 6Weeb Sitee ““www.mix-ssig.coom”” MSVHFS1-6 Mixed Signal Integration Corporation reserves the right to change any product or specification without notice at any time. Mix ed Signal Integration products are not designed or authorized for use in life support systems. Mixed Signal Integration assumes no respo nsibility for errors in this document. Figure 4 MSVHFS2/4 Typical Application
Selecttable Very High Frequency LP//BP Filtter Datta Sheett ©2011-22014 Mixeed Signal Inteegratioon 7Weeb Sitee ““www.mix-ssig.coom”” MSVHFS1-6 Mixed Signal Integration Corporation reserves the right to change any product or specification without notice at any time. Mix ed Signal Integration products are not designed or authorized for use in life support systems. Mixed Signal Integration assumes no respo nsibility for errors in this document. Figure 5 MSVHFS1/3/5/6 Typical Application
©2011-22014 Mixeed Signal Inteegratioon 8Weeb Sitee ““www.mix-ssig.coom”” STANDARD PRODUCTS MSGEQ5A Five Band Graphic Equalizer Display Filter MSGEQ7 Seven Band Graphic Equalizer Display Filter MSHFS1-6 Selectable High Frequency LP/BP Filter MSFS1-6 Selectable Lowpass/Bandpass Filter MSCAHF Selectable High Frequency Active Lowpass/Bandpass Filter MSU1F1-4, MSU2F1 Resistor Programmable Universal Active Filter MSU1HF1-4, MSU2HF1 High Frequency Resistor Programmable Universal Active Filter MSELP Switched Capacitor Elliptic Lowpass Filter with Op Amps MSNBLP Switched Capacitor Butterworth Lowpass Filter MSLE/B/C5L/M Switched Capacitor General Purpose Lowpass Filter MS2LFS Dual Selectable Low Voltage Lowpass/Bandpass Filter MSLFS Selectable Low Voltage Lowpass/Bandpass Filter MSHN1-6 Selectable High Pass/Notch Filter MSRAAF Resistor Programmable Active Audio Filter MSRAHF Resistor Programmable Active High Frequency Filter MSDET Tone Detector MSEPAF Electrically Programmable Active Filter MSCBT Communications Baseband Transceiver MSVL14 14 MHz Video Lowpass Filter MSSPSI Smart Programmable Sensor Interface MSCPSI Computer Programmable Sensor Interface MSLOSC 15 Hz to 64 kHz All Silicon Sine Source MSTHDA Total Harmonic Distortion Analyzer MSSCSA Single Chip Spectrum Analyzer MSFIPS FIP-140 Level 4+ Security Supervisor MSLSA Low Power Single Chip Spectrum Analyzer MSRFIF Radio Frequency Interface Front-End MSVHFS1-6 Selectable Very High Frequency LP/BP Filter MSMXVHF High Frequency Mixer and Selectable VHF LP/BP Filter
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