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854 Series
0.1 Hz to 102.4 kHz 8-Bit Programmable
Description The 854 Series are digitally programmable low-pass and high-pass active filters that are tunable over a 256:1 frequency range. 854 filters are available with any one of six standard factory-set tuning ranges up to 102.4 kHz. These units contain 8 CMOS logic inputs that can be operated in a transparent or latching mode. All 854 Series models are convenient, low profile, easy to use fully finished filters which require no external components or adjustments. They feature low harmonic distortion, and near theoretical phase and amplitude characteristics. 854 filters operate from non-critical 12 to 18 Vdc power supplies, have a 10 k (min.) input impedance, a 10 (max.) output impedance and offer dc voltage offset adjustment. Features/Benefits: * Digitally programmable corner frequency allows selecting cut-off frequencies specific to each application. * Plug-in ready-to-use, reducing engineering design and manufacturing cycle time. * Factory-set tuning range, no external clocks or adjustments needed. * Broad range of transfer characteristics and corner frequencies to meet a wide range of applications. * Low profile design, ideal for rack mount installations. Applications * Anti-alias filtering * Data acquisition systems * Communication systems and electronics * Medical electronics equipment and research * Aerospace, navigation and sonar applications * Sound and vibration testing * Real and compressed time data analysis * Noise elimination * Signal reconstruction
Programmable Specifications . . . . . . . . . . . . . Page Digital Tuning & Control . . . . . . . . . . . . . . . . . . . . . . 2 Available Low-Pass Models: . . . . . . . . . . . . . . . . . . . 854L8B 4-pole Butterworth . . . . . . . . . . . . . . . . . . 3 854L8L 4-pole Bessel . . . . . . . . . . . . . . . . . . . . . . 3 854L8Y2 4-pole Cheby (0.2 dB Ripple) . . . . . . . . . . 3 854L8Y5 4-pole Cheby (0.5 dB Ripple) . . . . . . . . . . 3 Available High-Pass Models: . . . . . . . . . . . . . . . . . . 854H8B 4-pole Butterworth . . . . . . . . . . . . . . . . . . 4 854H8Y2 4-pole Cheby (0.2 dB Ripple) . . . . . . . . . . 4 854H8Y5 4-pole Cheby (0.5 dB Ripple) . . . . . . . . . . 4 General Specifications: Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . 5 Pin-out/package data. . . . . . . . . . . . . . . . . . . . . . . . . 5
2" x 4" 4-Pole Filters
1784 Chessie Lane, Ottawa, IL 61350 * Tel: 800/252-7074, 815/434-7800 * FAX: 815/434-8176 e-mail: sales@freqdev.com * Web Address: http://www.freqdev.com
854 Series
8-Bit Programmable Filters
Digital Tuning Characteristics
The digital tuning interface circuits are two 4042 quad CMOS latches which accept the following CMOS-compatible inputs: eight tuning bits (D0 - D7), a latch strobe bit (C), and a transition polarity bit (P). Filter tuning follows the tuning equation given below: fc = ( fmax/256 ) [ 1 + D7 x 27 + D6 x 26 + D5 x 25 + D4 x 24 + D3 x 23 + D2 x 22 + D1 x 21 + D0 x 20 ] where D1 - D7 = "0" or "1", and fmax = Maximum tuning frequency; fc = corner frequency; Minimum tunable frequency = fmax/256 (D0 thru D7 = 0); Minimum frequency step (Resolution) = fmax/256 Pin-Out Key IN OUT GND "P" "C" +Vs -Vs Os Analog Input Signal Analog Output Signal Power and Signal Return Transition Polarity Bit Tuning Strobe Bit Supply Voltage, Positive Supply Voltage, Negative Optional Offset Adjustment D7 Tuning D6 Tuning D5 Tuning D4 Tuning D3 Tuning D2 Tuning D1 Tuning D0 Tuning Bit Bit Bit Bit Bit Bit Bit Bit 7 (MSB) 6 5 4 3 2 1 0 (LSB)
Digital Tuning & Control Characteristics
OUT +Vs -Vs D7 D6 D5 D4 GND D3 D2 D1 D0 IN Os
Data Control Specifications
Data Control Lines Functions Data Control Modes Mode 1 Mode 2 Input Data Levels Latch Strobe (C) Transition Polarity (P) P = 0; C = 0 P = 0; C = 0 P = 1; C = 1 P = 1; C = 1fl (CMOS Logic) 0 Vdc min. 11 Vdc min. -1 mA max. +1 mA max. 7.5 pF max. 0 25 nS 50 nS 80 nS min. Frequency Select Bits Logic "1" = +Vs Logic "0" = Gnd (Binary-Coded) LSB (least significant bit) MSB (most significant bit) 256 : 1, Binary Weighted 0 0 0 0 1 0 0 0 0 1 1 0 0 0 1 1 1 0 0 1 1 1 1 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 4 Vdc max. 15 Vdc max.
frequency follows input codes frequency latched on rising edge frequency follows input codes frequency latched on falling edge
Bottom View
--25 D5 0 0 0 --24 D4 0 0 0 --23 D3 0 0 0 --22 D2 0 0 0 --21 D1 0 0 1
PC
MSB 27 D7 0 0 0
--26 D6 0 0 0
LSB 20 D0 0 1 1
Bit Weight fc
Corner Frequency
Input Voltage (Vs = 15 Vdc) Low Level In High Level In Input Current High Level In Low Level In Input Capacitance Latch Response 1 Data Set Up Time 2 Data Hold Time Strobe Pulse Width Input Data Format Positive Logic Bit Weighting D0 D7 Frequency Range - 10 -5 mA typ. +10 -5 mA typ. 5 pF typ
fmax/256 fmax/128 fmax/64 fmax/32 fmax/16 fmax/8 fmax/4 fmax/2 fmax
Notes: 1. Frequency data must be present before occurrence of strobe edge. 2. Frequency data must be present after occurrence of strobe edge.
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1784 Chessie Lane, Ottawa, IL 61350 * Tel: 800/252-7074, 815/434-7800 * FAX: 815/434-8176 e-mail: sales@freqdev.com * Web Address: http://www.freqdev.com
854 Series
8-Bit Programmable
Model Product Specifications Transfer Function Size, Model 1 & 2 Model 3 thru 6 Range fc Theoretical Transfer Characteristics Passband Ripple
(theoretical)
4-Pole Low-Pass Filters
854L8L 854L8Y2 854L8Y5
854L8B
4-Pole, Butterworth 4.0" x 2.0" x 0.6" 4.0" x 2.0" x 0.4" 0.1 Hz to 102.4 kHz Appendix A Page 7 0.0 dB 0 0.1 dB max. 0 0.05 dB typ. 24 dB/octave fc 0.01% /C -3 dB -180 0.67 dB 3.01 dB 30.0 dB 40.0 dB 0 - 0.8 fc 2% max.
4-Pole, Bessel 4.0" x 2.0" x 0.6" 4.0" x 2.0" x 0.4" 0.1 Hz to 102.4 kHz Appendix A Page 2 0.0 dB 0 0.1 dB max. 0 0.05 dB typ. 24 dB/octave fc 0.01% /C -3 dB -121 1.86 dB 3.01 dB 30.0 dB 40.0 dB 0 - fc 2% max.
4-Pole, Chebychev, 0.2 dB Ripple 4.0" x 2.0" x 0.6" 4.0" x 2.0" x 0.4" 0.1 Hz to 102.4 kHz Appendix A Page 12 0.20 dB 0 0.1 dB max. 0 0.05 dB typ. 24 dB/octave fc 0.01% /C -3 dB -231 -0.20 dB 3.01 dB 30.0 dB 40.0 dB 0 - 0.8 fc 2% max.
4-Pole, Chebychev, 0.5 dB Ripple 4.0" x 2.0" x 0.6" 4.0" x 2.0" x 0.4" 0.1 Hz to 102.4 kHz Appendix A Page 15 0.05 dB 0 0.1 dB max. 0 0.05 dB typ. 24 dB/octave fc 0.01% /C -3 dB -245 -0.43 dB 3.01 dB 30.0 dB 40.0 dB 0 - 0.8 fc 2% max.
DC Voltage Gain
(non-inverting)
Stopband Attenuation Rate Cutoff Frequency Stability Amplitude Phase Filter Attenuation
(theoretical)
0.80 fc 1.00 fc 2.37 fc 3.16 fc
0.80 fc 1.00 fc 3.50 fc 4.72 fc 2 max. 1 typ.
0.80 fc 1.00 fc 1.89 fc 2.46 fc
0.80 fc 1.00 fc 1.80 fc 2.33 fc
Phase Match1
2 max. 1 typ. 0.8 fc - 1.0 fc 3 max. 1.5 typ. 0 - 0.8 fc 0.2 dB max. 0.1 dB typ. 0.8 fc - 1.0 fc 0.3 dB max. 0.15 dB typ.
2 max. 1 typ. 0.8 fc - 1.0 fc 3 max. 1.5 typ. 0.2 dB max. 0.1 dB typ. 0.8 fc - 1.0 fc 0.3 dB max. 0.15 dB typ. < - 88 dB typ. 200 mVrms typ. 50 mVrms typ. 0 - 0.8 fc
2 max. 1 typ. 0.8 fc - 1.0 fc 3 max. 1.5 typ. 0.2 dB max. 0.1 dB typ. 0.8 fc - 1.0 fc 0.3 dB max. 0.15 dB typ. < - 88 dB typ. 200 mVrms typ. 50 mVrms typ. 0 - 0.8 fc
Amplitude Accuracy
(theoretical)
0 - fc
0.2 dB max. 0.1 dB typ.
Total Harmonic Distortion @ 1 kHz Wide Band Noise
(5 Hz - 2 MHz)
< - 100 dB typ. 200 mVrms typ. 50 mVrms typ.
< - 100 dB typ. 200 mVrms typ. 50 mVrms typ.
Narrow Band Noise
(5 Hz - 100 kHz)
Filter Mounting Assembly
FMA-03A
FMA-03A
FMA-03A
FMA-03A
1. Unit to unit match for the same transfer function, set to the same frequency and operating configuration, and from the same manufacturing lot.
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1784 Chessie Lane, Ottawa, IL 61350 * Tel: 800/252-7074, 815/434-7800 * FAX: 815/434-8176 e-mail: sales@freqdev.com * Web Address: http://www.freqdev.com
854 Series
8-Bit Programmable
Model Product Specifications Transfer Function Size, Model 1 & 2 Model 3 thru 6 Range fc Theoretical Transfer Characteristics Passband Ripple
(theoretical)
4-Pole High-Pass Filters
854H8Y2 854H8Y5
854H8B
4-Pole, Butterworth 4.0" x 2.0" x 0.6" 4.0" x 2.0" x 0.4" 0.1 Hz to 102.4 kHz Appendix A Page 27 0.0 dB 0 0.2 dB to 100 kHz 0 0.5 dB to 120 kHz 120 kHz (-6 dB) 1 MHz 24 dB/octave fc 0.01% /C -3 dB -180 40 dB 30 dB 3.01 dB 0.02 dB 2% max.
4-Pole, Chebychev, 0.2 dB Ripple 4.0" x 2.0" x 0.6" 4.0" x 2.0" x 0.4" 0.1 Hz to 102.4 kHz Appendix A Page 31 0.20 dB 0 0.2 dB to 100 kHz 0 0.5 dB to 120 kHz 120 kHz (-6 dB) 1 MHz 24 dB/octave fc 0.01% /C -3 dB -231 40.0 dB 30.0 dB 3.01 dB -0.07 dB 2% max.
4-Pole, Chebychev, 0.5 dB Ripple 4.0" x 2.0" x 0.6" 4.0" x 2.0" x 0.4" 0.1 Hz to 102.4 kHz Appendix A Page 33 0.50 dB 0 0.2 dB to 100 kHz 0 0.5 dB to 120 kHz 120 kHz (-6 dB) 1 MHz 24 dB/octave fc 0.01% /C -3 dB -245 40.0 dB 30.0 dB 3.01 dB -0.25 dB 2% max.
Voltage Gain
(non-inverting)
Power Bandwidth Small Signal Bandwidth Stopband Attenuation Rate Cutoff Frequency Stability Amplitude Phase Filter Attenuation
(theoretical)
0.31 fc 0.42 fc 1.00 fc 2.00 fc
0.41 fc 0.53 fc 1.00 fc 2.00 fc
0.43 fc 0.56 fc 1.00 fc 2.00 fc
Phase Match1
fc - 100 kHz 3 max. 1.5 typ.
fc - 100 kHz 3 max. 1.5 typ.
fc - 100 kHz 3 max. 1.5 typ.
Amplitude Accuracy
(theoretical)
1.00 - 1.25 fc 0.3 dB max. 0.15 dB typ. 1.25 fc-100 kHz 0.2 dB max. 0.1 dB typ. < - 100 dB typ. 400 mVrms typ. 100 mVrms typ.
1.00 - 1.25 fc 0.3 dB max. 0.15 dB typ. 1.25 fc-100 kHz 0.2 dB max. 0.1 dB typ. < - 88 dB typ. 400 mVrms typ. 100 mVrms typ.
1.00 - 1.25 fc 0.3 dB max. 0.15 dB typ. 1.25 fc-100 kHz 0.2 dB max. 0.1 dB typ. < - 88 dB typ. 400 mVrms typ. 100 mVrms typ.
Total Harmonic Distortion @ 1 kHz Wide Band Noise Narrow Band Noise
(5 Hz - 100 kHz)
Filter Mounting Assembly
FMA-03A
FMA-03A
FMA-03A
1. Unit to unit match for the same transfer function, set to the same frequency and operating configuration, and from the same manufacturing lot.
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1784 Chessie Lane, Ottawa, IL 61350 * Tel: 800/252-7074, 815/434-7800 * FAX: 815/434-8176 e-mail: sales@freqdev.com * Web Address: http://www.freqdev.com
854 Series
Specification
(25C and Vs 15 Vdc)
Analog Input Characteristics1 Impedance Voltage Range Max. Safe Voltage Analog Output Characteristics Impedance (Closed Loop) Linear Operating Range Maximum Current2 Offset Voltage3 Offset Temp. Coeff. Power Supply (V) Rated Voltage Operating Range Maximum Safe Voltage Quiescent Current 4-Pole Temperature Operating Storage
Notes: 1. Input and output signal voltage referenced to supply common. 2. Output is short circuit protected to common. DO NOT CONNECT TO Vs. 3. Adjustable to zero. 4. Units operate with or without offset pin connected.
Pin-Out and Package Data Ordering Information
Pin-Out & Package Data
4.00
10 k W min. 10 Vpeak
Vs
0.6
M-2
0.4
11 W typ. 10 W max.
M-1 Side View
0.2 min 0.04 Dia.
10V 2 mA
22 mV typ. 20 mV max. 50 mV/C
OUT +Vs -Vs D7 D6 D5 D4 2.00 GND D3 D2 D1 D0
4 IN Os
15 Vdc 12 to 18 Vdc 18 Vdc 13 mA typ. 20 mA max.
-20 to +70C -25 to +85C
Bottom View
PC
Filter Mounting Assembly-See FMA-03A
Ordering Information
Filter Type L - Low Pass H - High Pass Transfer Function B - Butterworth L - Bessel Y2 - Chebychev (0.2 dB Ripple) Y5 - Chebychev (0.2 dB Ripple)
DC Offset Adjustment
Vs Do not connect if trim is not required. 20 k W (Cermet) OS
854L8B-3
Model Number
e.g., Model
- Vs
Number 1 2 3 4 5 6
Tuning Range (Hz) 0.1 to 25.6 1.0 to 256 10 to 2560 100 to 25.6k 200 to 51.2k 400 to 102.4k
Minimum Step(Hz) 0.1 1.0 10 100 200 400
Case M-2 M-2 M-1 M-1 M-1 M-1
We hope the information given here will be helpful. The information is based on data and our best knowledge, and we consider the information to be true and accurate. Please read all statements, recommendations or suggestions herein in conjunction with our conditions of sale which apply to all goods supplied by us. We assume no responsibility for the use of these statements, recommendations or suggestions, nor do we intend them as a recommendation for any use which would infringe any patent or copyright. IN-00854-01
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Product Handling Procedure
Programmable Filter Modules Power Sequence & ESD
November 2000 Programmable Filters Modules 818, 824, 828, 828BP, 828BR, 854, 858, R854, R858 I. Scope
The following precautions are necessary when handling and installing Frequency Devices programmable filter modules.
II. Digital Circuit Description
The digital input pins connect directly to 4000 series CMOS logic, such as the 4053 analog switch. The power supply (Vss) for the digital logic on the module comes directly from the +15 Volt pin on the module. This sets the threshold voltage at 11.0 V minimum to 15.0 V maximum for a "1" (High) level and 0.0 V minimum to 4.0 V maximum for a "0" (Low) level. Applying a voltage between 4.0 and 11.0 V will produce unpredictable operation. Connecting 5 Volt or 3.3 V logic devices directly to the filter module without using a voltage translator will result in erratic operation of the filter.
III. (VERY IMPORTANT) Power-Up and Power-Down Sequence Do not plug-in or un-plug module while power is applied. It is imperative that power is
supplied to the + 15 V pin on the filter module before or at the same instance that any digital pin is pulled High (> 0.0 V). Failure to do this will result in excessive current flowing through the digital input pin and through a protection diode internal to the 4000 logic, which will result in damage to the module. The proper power-up and power-down sequence is: 1. Connect filter module ground. 2. Connect filter module +15 V. 3. Connect filter module -15 V. 4. Connect the input signal. All four of the above steps can also occur simultaneously. Power-down should occur in the reverse order.
IV. ESD Issues
Like most modern electronic equipment, the modules can be damaged by electrostatic discharge (ESD). The modules are shipped from the factory in sealed, anti-static packaging and should be kept in the sealed package prior to mounting on a circuit board. The following additional rules should also be observed when handling the modules after they are removed from the factory packaging: 1. Only a person wearing a properly grounded wrist strap should handle the modules. 2. Any work surface that the modules are placed on must be properly ESD grounded. 3. Any insulating materials capable of generating static charge (such as paper) should be kept away from the modules. Static generating clothing should be covered with an ESD-protective smock.
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Low-Pass
4-Pole Appendix A Theoretical Transfer Characteristics 1 f/fc Amp Phase Delay (Hz) (dB) (deg) (sec) 0.00 0.00 0.00 .336 0.10 -0.028 -12.1 .336 0.20 -0.111 -24.2 .336 0.30 -0.251 -36.3 .336 0.40 -0.448 -48.4 .336 0.50 -0.705 -60.6 .336 0.60 -1.02 -72.7 .336 0.70 -1.41 -84.8 .336 0.80 -1.86 -96.8 .335 0.85 -2.11 -103 .334 0.90 -2.40 -109 .333 0.95 -2.69 -115 .332 1.00 -3.01 -121 .330 1.10 -3.71 -133 .325 1.20 -4.51 -144 .318 1.30 -5.39 -156 .308 -166 1.40 -6.37 .295 -177 1.50 -7.42 .280 -187 1.60 -8.54 .263 -195 1.70 -9.71 .246 -204 1.80 -10.9 .228 1.90 -12.2 -212 .211 2.00 -13.4 -219 .194 2.25 -16.5 -235 .158 2.50 -19.5 -248 .129 2.75 -22.4 -259 .107 -267 3.00 -25.1 .089 -275 3.25 -27.6 .076 -281 3.50 -30.0 .065 -291 4.00 -34.4 .049 -305 5.00 -41.9 .031 6.00 -315 .021 -48.1 7.00 -321 .016 -53.4 8.00 -326 .012 -58.0 9.00 -330 .009 -62.0 10.0 -333 .008 -65.7 Bessel Frequency Response 0 Amp (dB) -20 -40 -60 -80 -100 0.1
2
1.0 2 3 4 5 6 7 10.0 Normalized Frequency(f/fc)
3 4 5 6 78
Delay (Normalized) 1.0 Delay (sec)
0.5
0.0 0.1
0.15 2
1.0 1.5 Normalized Time (1/f sec)
3
4
5 6 7 89
Step Response 1.2 1.0 0.8 0.6 0.4 0.2 -0.0 -0.2 0 Step Response (V/V)
1.Normalized Group Delay: The above delay data is normalized to a corner frequency of 1.0Hz.The actual delay is the normalized delay divided by the actual corner frequency (fc). Normalized Delay Actual Delay = Actual Corner Frequency (fc) in Hz
1 2 3 4 Normalized Time (1/f sec)
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Low-Pass
4-Pole Appendix A Theoretical Transfer Characteristics 1 f/fc Amp Phase Delay (Hz) (dB) (deg) (sec) 0.00 0.00 0.00 .416 0.10 0.00 -15.0 .418 0.20 0.00 -30.1 .423 0.30 -0.00 -45.5 .433 0.40 -0.003 -61.4 .449 0.50 -0.017 -78.0 .474 0.60 -0.072 -95.7 .511 0.70 -0.243 -115 .558 0.80 -0.674 -136 .604 0.85 -1.047 -147 .619 0.90 -1.555 -158 .622 0.95 -2.21 -169 .612 1.00 -3.01 -180 .588 1.10 -4.97 -200 .513 1.20 -7.24 -217 .427 1.30 -9.62 -231 .350 1.40 -12.0 -242 .289 1.50 -14.3 -252 .241 1.60 -16.4 -260 .204 1.70 -18.5 -266 .175 1.80 -20.5 -272 .152 1.90 -22.3 -277 .134 2.00 -24.1 -282 .119 2.25 -28.2 -291 .091 2.50 -31.8 -299 .072 2.75 -35.1 -304 .059 3.00 -38.2 -309 .049 3.25 -41.0 -313 .041 3.50 -43.5 -317 .035 4.00 -48.2 -322 .027 5.00 -55.9 -330 .017 6.00 -62.3 -335 .012 7.00 -67.6 -339 .009 8.00 -72.2 -341 .007 9.00 -76.3 -343 .005 -80.0 10.0 -345 .004 Butterworth Frequency Response 0 Amp (dB) -20 -40 -60 -80 -100 0.1
2
1.0 2 3 4 5 6 7 10.0 Normalized Frequency(f/fc)
3 4 5 6 78
Delay (Normalized) 2.0 Delay (sec)
1.0
0.0 0.1
0.15 2
1.0 1.5 Normalized Frequency(f/fc)
3
4
5 6 7 89
Step Response Step Response (V/V) 1.2 1.0 0.8 0.6 0.4 0.2 -0.0 0 1 2 3 4 Normalized Time (1/f sec) 5
1.Normalized Group Delay: The above delay data is normalized to a corner frequency of 1.0Hz.The actual delay is the normalized delay divided by the actual corner frequency (fc). Normalized Delay Actual Delay = Actual Corner Frequency (fc) in Hz
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Low-Pass
4-Pole, 0.2 dB Ripple Appendix A Theoretical Transfer Characteristics 1 f/fc Amp Phase Delay (Hz) (dB) (deg) (sec) 0.00 0.000 0.00 .478 0.10 0.039 -17.3 .487 0.20 0.129 -35.2 .509 0.30 0.195 -54.0 .533 0.40 0.174 -73.4 .547 0.50 0.074 -93.2 .553 0.000 0.60 -113 .575 0.074 0.70 -135 .654 0.199 0.80 -162 .836 0.063 0.85 -178 .947 -0.443 0.90 -196 1.02 .989 0.95 -214 -1.47 .873 1.00 -231 -3.01 .583 1.10 -257 -6.89 .385 1.20 -274 -10.8 .271 1.30 -286 -14.5 1.40 -17.7 -294 .202 1.50 -20.7 -300 .158 1.60 -23.4 -306 .128 1.70 -25.8 -310 .107 1.80 -28.1 -313 .090 -30.2 1.90 -316 .078 -32.2 2.00 -319 .068 -36.7 -324 2.25 .051 -40.6 -328 2.50 .039 -44.1 -331 2.75 .032 3.00 -47.3 -334 .026 3.25 -50.2 -336 .022 3.50 -52.8 -338 .018 4.00 -57.6 -341 .014 5.00 -65.5 -345 .009 -71.9 6.00 -347 .006 -77.3 7.00 -349 .004 -82.0 8.00 -351 .003 -86.1 9.00 -352 .003 -89.8 10.0 -352 .002 Chebychev Frequency Response 0 Amp (dB) -20 -40 -60 -80 -100 0.1
2
1.0 2 3 4 5 6 7 810.0 Normalized Frequency(f/fc)
3 4 5 6 78
Delay (Normalized) 2.0 Delay (sec)
1.0
0.0 0.1
0.15 2
1.0 1.5 Normalized Time (1/f sec)
3
4
5 6 7 89
Step Response Step Response (V/V) 1.2 1.0 0.8 0.6 0.4 0.2 -0.0 0 1 2 3 4 Normalized Time (1/f sec) 5
1.Normalized Group Delay: The above delay data is normalized to a corner frequency of 1.0Hz.The actual delay is the normalized delay divided by the actual corner frequency (fc). Normalized Delay Actual Delay = Actual Corner Frequency (fc) in Hz
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Low-Pass
4-Pole, 0.5 dB Ripple Appendix A Theoretical Transfer Characteristics 1 f/fc Amp Phase Delay (Hz) (dB) (deg) (sec) 0.00 0.00 0.00 .476 0.10 0.087 -17.3 .492 0.20 0.295 -35.7 .533 0.30 0.474 -55.7 .577 0.40 0.463 -76.9 .596 0.50 0.248 -98.2 .583 0.60 0.025 -119 .578 0.70 0.072 -141 .647 0.80 0.432 -168 .881 0.85 0.482 -185 1.06 0.90 0.062 -205 1.18 0.95 -1.12 -226 1.13 1.00 -3.01 -245 .946 1.10 -7.61 -272 .559 1.20 -12.0 -288 .345 1.30 -15.9 -298 .235 1.40 -19.3 -305 .173 1.50 -22.4 -311 .134 1.60 -25.1 -315 .108 1.70 -27.6 -318 .089 1.80 -29.9 -321 .075 -32.1 1.90 -324 .065 -34.1 2.00 -326 .057 -38.6 2.25 -301 .042 -42.6 2.50 -334 .033 -46.1 2.75 -336 .026 3.00 -49.3 -339 .021 3.25 -52.2 -340 .018 3.50 -54.9 -342 .015 4.00 -59.7 -344 .011 5.00 -67.6 -347 .007 6.00 -74.0 -350 .005 7.00 -79.4 -351 .004 8.00 -84.1 -352 .003 9.00 -88.2 -353 .002 10.0 -91.9 -354 .002 Chebychev Frequency Response 0 Amp (dB) -20 -40 -60 -80 -100 0.1
2
1.0 10.0 Normalized Frequency(f/fc)
3 4 5 6 78
2
3 4 5 6 78
Delay (Normalized) 2.0 Delay (sec)
1.0
0.0 0.1
0.15 2
1.0 1.5 Normalized Time (1/f sec)
3
4
5 6 7 89
Step Response Step Response (V/V) 1.2 1.0 0.8 0.6 0.4 0.2 -0.0 0 1 2 3 4 Normalized Time (1/f sec) 5
1.Normalized Group Delay: The above delay data is normalized to a corner frequency of 1.0Hz.The actual delay is the normalized delay divided by the actual corner frequency (fc). Normalized Delay Actual Delay = Actual Corner Frequency (fc) in Hz
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15
High-Pass
4-Pole Appendix A Theoretical Transfer Characteristics 1 f/fc Amp Phase Delay (Hz) (dB) (deg) (sec) 0.10 -80.0 345 .418 -55.9 0.20 330 .423 -41.8 0.30 314 .433 -31.8 0.40 299 .449 -24.1 0.50 282 .474 0.60 -17.8 264 .511 0.70 -12.6 245 .558 0.80 -8.43 224 .604 0.85 -6.69 213 .619 202 0.90 -5.22 .622 0.95 -3.99 191 .612 1.00 -3.01 180 .588 1.20 -0.908 143 .427 .289 1.40 -0.285 118 .204 1.60 -0.100 100 1.80 -0.039 87.6 .152 2.00 -0.017 78.0 .119 61.4 2.50 -0.003 .072 -0.001 50.7 3.00 .049 0.00 37.8 4.00 .027 5.00 0.00 30.1 .017 6.00 0.00 25.1 .012 7.00 0.00 21.4 .009 0.00 8.00 18.8 .007 0.00 9.00 16.7 .005 10.0 0.00 15.0 .004 Butterworth Frequency Response 0 Amp (dB) -20 -40 -60 -80 -100 0.1
2
1.0 2 3 4 5 6 7 10.0 Normalized Frequency(f/fc)
3 4 5 6 78
1.Normalized Group Delay: The above delay data is normalized to a corner frequency of 1.0Hz.The actual delay is the normalized delay divided by the actual corner frequency (fc). Normalized Delay Actual Delay = Actual Corner Frequency (fc) in Hz
1784 Chessie Lane, Ottawa, IL 61350 * Tel: 800/252-7074, 815/434-7800 * FAX: 815/434-8176 e-mail: sales@freqdev.com Web Address: http://www.freqdev.com
27
High-Pass
4-Pole, 0.2 dB Ripple Appendix A Theoretical Transfer Characteristics 1 f/fc Amp Phase Delay (Hz) (dB) (deg) (sec) 0.10 -89.8 352 .212 -65.1 0.20 345 .218 -51.1 0.30 337 .228 -40.6 0.40 328 .245 -32.2 0.50 319 .272 -25.0 0.60 308 .314 -18.6 0.70 296 .383 -12.7 0.80 280 .500 -7.34 0.90 259 .686 -3.01 1.00 231 .873 .633 1.20 172 .140 .275 1.50 128 .031 .197 1.70 111 .003 .138 2.00 93.2 .074 .088 2.50 73.4 .174 3.00 .200 60.4 .060 4.00 .170 44.5 .033 5.00 .129 35.2 .020 .098 6.00 29.2 .014 7.00 .076 24.9 .010 .060 8.00 21.7 .008 .048 9.00 19.3 .006 .040 10.0 17.3 .005 Chebychev Frequency Response 0 Amp (dB) -20 -40 -60 -80 -100 0.1
2
1.0 2 3 4 5 6 7 8 10.0 Normalized Frequency(f/fc)
3 4 5 6 78
1.Normalized Group Delay: The above delay data is normalized to a corner frequency of 1.0Hz.The actual delay is the normalized delay divided by the actual corner frequency (fc). Normalized Delay Actual Delay = Actual Corner Frequency (fc) in Hz
1784 Chessie Lane, Ottawa, IL 61350 * Tel: 800/252-7074, 815/434-7800 * FAX: 815/434-8176 e-mail: sales@freqdev.com Web Address: http://www.freqdev.com
31
High-Pass
4-Pole, 0.5 dB Ripple Appendix A Theoretical Transfer Characteristics 1 f/fc Amp Phase Delay (Hz) (dB) (deg) (sec) 0.10 -91.9 354 .174 -67.6 0.20 347 .179 -53.1 0.30 341 .188 -42.6 0.40 334 .203 -34.1 0.50 326 .226 -26.8 0.60 317 .263 -20.2 0.70 307 .326 -14.0 0.80 293 .440 -8.13 0.90 274 .651 -3.01 1.00 245 .946 .693 1.20 179 .500 .271 1.50 133 .014 .199 1.70 117 .043 .146 2.00 98.2 .249 .095 2.50 76.9 .469 3.00 .498 62.7 .065 4.00 .401 45.5 .035 5.00 .296 35.7 .021 .221 6.00 29.4 .014 7.00 .169 25.0 .010 .133 8.00 21.8 .008 .107 9.00 19.3 .006 .088 10.0 17.3 .005 Chebychev Frequency Response 0 Amp (dB) -20 -40 -60 -80 -100 0.1
2
1.0 10.0 Normalized Frequency(f/fc)
3 4 5 6 78
2
3 4 5 6 78
1.Normalized Group Delay: The above delay data is normalized to a corner frequency of 1.0Hz.The actual delay is the normalized delay divided by the actual corner frequency (fc). Normalized Delay Actual Delay = Actual Corner Frequency (fc) in Hz
1784 Chessie Lane, Ottawa, IL 61350 * Tel: 800/252-7074, 815/434-7800 * FAX: 815/434-8176 e-mail: sales@freqdev.com Web Address: http://www.freqdev.com
33

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