ETC 424

424 Series
10 Hz to 102.4 kHz
4-Bit Programmable
32-Pin DIP
4-Pole Filters
Description
The 424 Series are 4-pole digitally programmable
low-pass and high-pass active filters. These new
filters take advantage of the company’s proprietary
designs using surface-mount technology to provide
a low profile, compact package in minimal board
space. 424 filters are factory tuned to one of ten
preset 4-bit binary ranges from 10 Hz to 102.4 kHz.
Contact the factory for custom discrete tuning
ranges, maximum span 1000:1.
All 424 Series models are easy to use fully finished
filters which require no external components or
adjustment. They feature low harmonic distortion,
near theoretical phase and amplitude characteristics
and operate over a dynamic input voltage range
from non-critical ±12V to ±18V power supplies.
Features/Benefits:
• Low harmonic distortion and wide signal-to-noise
ratio to 16-bit resolution.
• Compact 1.8"L x 0.8"W x 0.3"H min. (32-pin DIP
footprint) minimizes board space requirements.
• 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 tuned, no external clocks or adjustments
needed
• Broad range of transfer characteristics and corner
frequencies to meet a wide range of applications.
Applications
• Anti-alias filtering
• Data acquisition systems
• Communication systems and electronics
• Medical electronics equipment and research
• Aerospace, navigation and sonar applications
• Acoustic and vibration analysis and control
• Real and compressed time data analysis
• Noise elimination
• Signal reconstruction
Programmable Specifications. . . . . . . . . . . . . . Page
Digital Tuning & Control . . . . . . . . . . . . . . . . . . . . . . 2
Available Low-Pass Models: . . . . . . . . . . . . . . . . . . .
424L4B 4-pole Butterworth . . . . . . . . . . . . . . . . . . 3
424L4L
4-pole Bessel . . . . . . . . . . . . . . . . . . . . . . 3
424L4Y2 4-pole Cheby (0.2 dB Ripple) . . . . . . . . . . 3
424L4Y5 4-pole Cheby (0.5 dB Ripple) . . . . . . . . . . 3
Available High-Pass Models: . . . . . . . . . . . . . . . . . .
424H4B 4-pole Butterworth . . . . . . . . . . . . . . . . . . 4
424H4Y2 4-pole Cheby (0.2 dB Ripple) . . . . . . . . . . 4
424H4Y5 4-pole Cheby (0.5 dB Ripple) . . . . . . . . . . 4
General Specifications:
Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . 5
Pin-out/package data. . . . . . . . . . . . . . . . . . . . . . . . . 5
25 Locust St, Haverhill, Massachusetts 01830 • Tel: 800/252-7074, 978/374-0761 • FAX: 978/521-1839
e-mail: [email protected] • Web Address: http://www.freqdev.com
424 Series
Digital Tuning &
Control Characteristics
4-Bit Programmable Filters
Digital Tuning Characteristics
Pin-Out Key
The digital tuning interface circuits are a parallel set of CMOS
switches which accept CMOS compatible inputs for the four
tuning bits (D0 - D3).
IN
20
D0
0
1
1
1
1
Bit
Weight
fc - corner
frequency
fmax/16
fmax/8
fmax/4
fmax/2
fmax
D1
0
0
1
1
1
D2
0
0
0
1
1
Tuning Bit 0 (LSB)
-Vs
Supply Voltage, Negative +5V Logic Power
Os
Offset Adjustment
D0
Bottom View
Gnd Os4
-Vs +Vs
Out
D0
D1
+5V
In
D2 D3
0.00
0.10
0.00
Data Input Specifications
Discrete Frequencies
D0
0
1
1
1
1
Supply Voltage, Positive
0.80
0.70
Binary Tuning Equation:
fc = (fmax/16) [1+ D3 x 23 + D2 x 22 + D1 x 21 + D0 x 20]
where D1 - D3 = “0” or “1”, and
fmax = Maximum tuning frequency
fc = Corner frequency;
Minimum tunable frequency = fmax/16 (D0 thru D3 = 0);
Minimum frequency step (Resolution) = fmax /16
F
FB
F1
F2
F3
F4
+Vs
1.80
21
D1
0
0
1
1
1
Tuning Bit 1
1.50
1.60
22
D2
0
0
0
1
1
GND Power and Signal Return D1
1.30
23
D3
0
0
0
0
1
Tuning Bit 2
0.80
0.90
1.00
1.10
LSB
D2
0.50
---
Tuning Bit 3 (MSB)
0.30
---
D3
OUT Analog Output Signal
Binary Tuning Range
MSB
Analog Input Signal
D3
0
0
0
0
1
Input Data Levels
Discrete Tuning Equation:
fc = FB + D0[Df0] + D1[Df1] + D2[Df2] + D3[Df3]
Df0, Df1, Df2, Df3 are the incremental frequency shifts for the data
bits D0, D1, D2 and D3. They are selected to realize the five
customer specified programming frequencies FB fi F4. Other
programming codes produce valid fc’s between FB and F4.
(+5Vdc CMOS Logic)
Input Voltage (Vs=15 Vdc)
Low Level In
High Level In
0 Vdc min.
3.5 Vdc min.
0.5 Vdc max.
5.0 Vdc max.
Input Current
High Level In
Low Level In
-0.4mA typ.
+0.4mA typ.
-2.0mA max.
+2.0mA max.
Input Capacitance
20 pF typ.
30 pF max.
Input Data Format
Positive Logic
Frequency Select Bits
Logic “1” = (+5Vdc)
Logic “0” = Gnd
Bit Weight
D0
D3
(Binary-Coded)
LSB (least significant bit)
MSB (most significant bit)
Frequency Range16:1 Binary Weighted
2
25 Locust St, Haverhill, Massachusetts 01830 • Tel: 800/252-7074, 978/374-0761 • FAX: 978/521-1839
e-mail: [email protected] • Web Address: http://www.freqdev.com
424 Series
4-Pole
Low-Pass Filters
4-Bit Programmable
Model
424L4B
424L4L
424L4Y2
424L4Y5
Transfer Function
4-Pole,
Butterworth
4-Pole,
Bessel
4-Pole, Chebychev,
0.2 dB Ripple
4-Pole, Chebychev,
0.5 dB Ripple
Size
0.8” x 1.8” x 0.3”
0.8" x 1.8" x 0.3"
0.8" x 1.8" x 0.3"
0.8" x 1.8" x 0.3"
Range fc
10.0 Hz to 102.4 kHz
10.0 Hz to 102.4 kHz
10.0 Hz to 102.4 kHz
10.0 Hz to 102.4 kHz
Theoretical Transfer
Characteristics
Appendix A
Page 7
Appendix A
Page 2
Appendix A
Page 12
Appendix A
Page 15
Passband Ripple
0.0 dB
0.0 dB
0.20 dB
0.50 dB
0 ± 0.1 dB max.
0 ± 0.05 dB typ.
0 ± 0.1 dB max.
0 ± 0.05 dB typ.
0 ± 0.1 dB max.
0 ± 0.05 dB typ.
0 ± 0.1 dB max.
0 ± 0.05 dB typ.
Stopband
Attenuation Rate
24 dB/octave
24 dB/octave
24 dB/octave
24 dB min.
Cutoff Frequency
Stability
Amplitude
Phase
fc
± 0.01% /°C
-3 dB
-180°
Filter Attenuation
0.67 dB
3.01 dB
30.0 dB
40.0 dB
Product Specifications
(theoretical)
DC Voltage Gain
(non-inverting)
(theoretical)
Phase Match1
Amplitude Accuracy
(theoretical)
± 2% max.
0.80 fc
1.00 fc
2.37 fc
3.16 fc
0 - 0.8 fc
± 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.
fc
± 0.01% /°C
-3 dB
-121°
± 2% max.
1.86 dB
3.01 dB
30.0 dB
40.0 dB
0.80 fc
1.00 fc
3.50 fc
4.72 fc
0 - fc
± 2° max.
± 1° typ.
fc
± 0.01% /°C
-3 dB
-231°
-0.20 dB
3.01 dB
30.0 dB
40.0 dB
0 - 0.8 fc
0.8 fc - 1.0 fc
0 - fc
± 2% max.
0.80 fc
1.00 fc
1.89 fc
2.46 fc
± 2° max.
± 1° typ.
± 3° max.
± 1.5° typ.
fc
± 0.01% /°C
-3 dB
-245°
± 2% max.
-0.43 dB
3.01 dB
30.0 dB
40.0 dB
0 - 0.8 fc
0.8 fc - 1.0 fc
± 0.2 dB max. 0 - 0.8 fc
± 0.2 dB max. 0 - 0.8 fc
± 0.1 dB typ.
± 0.1 dB typ.
0.8 fc - 1.0 fc ± 0.3 dB max. 0.8 fc - 1.0 fc
± 0.15 dB typ.
0.80 fc
1.00 fc
1.80 fc
2.33 fc
± 2° max.
± 1° typ.
± 3° max.
± 1.5° typ.
± 0.2 dB max.
± 0.1 dB typ.
± 0.3 dB max.
± 0.15 dB typ.
Total Harmonic
Distortion @ 1 kHz
< - 100 dB typ.
< - 100 dB typ.
< - 88 dB typ.
< - 88 dB typ.
Wide Band Noise
200 mVrms typ.
200 mVrms typ.
200 mVrms typ.
200 mVrms typ.
50 mVrms typ.
50 mVrms typ.
50 mVrms typ.
50 mVrms typ.
FMA-02A
FMA-02A
FMA-02A
FMA-02A
(5 Hz - 2 MHz)
Narrow Band Noise
(5 Hz - 100 kHz)
Filter Mounting
Assembly
1. Unit to unit match for the same transfer function, set to the same frequency and operating configuration, and from the same manufacturing lot.
3
25 Locust St, Haverhill, Massachusetts 01830 • Tel: 800/252-7074, 978/374-0761 • FAX: 978/521-1839
e-mail: [email protected] • Web Address: http://www.freqdev.com
424 Series
4-Pole
High-Pass Filters
4-Bit Programmable
Model
424H4B
424H4Y2
424H4Y5
Transfer Function
4-Pole,
Butterworth
4-Pole, Chebychev,
0.2 dB Ripple
4-Pole, Chebychev,
0.5 dB Ripple
Size
0.8” x 1.8” x 0.3”
0.8" x 1.8" x 0.3"
0.8" x 1.8" x 0.3"
Range fc
10.0 Hz to 102.4 kHz
10.0 Hz to 102.4 kHz
10.0 Hz to 102.4 kHz
Theoretical Transfer
Characteristics
Appendix A
Page 27
Appendix A
Page 31
Appendix A
Page 33
Passband Ripple
0.0 dB
0.20 dB
0.50 dB
0 ± 0.2 dB to 100 kHz
0 ± 0.5 dB to 120 kHz
0 ± 0.2 dB to 100 kHz
0 ± 0.5 dB to 120 kHz
0 ± 0.2 dB to 100 kHz
0 ± 0.5 dB to 120 kHz
Power Bandwidth
120 kHz
120 kHz
120 kHz
Small Signal Bandwidth
(-6 dB) 1 MHz
(-6 dB) 1 MHz
(-6 dB) 1 MHz
Stopband
Attenuation Rate
24 dB/octave
24 dB/octave
24 dB/octave
Cutoff Frequency
Stability
Amplitude
Phase
fc
± 0.01% /°C
-3 dB
-180°
Filter Attenuation
40 dB
30 dB
3.01 dB
0.02 dB
Product Specifications
(theoretical)
Voltage Gain
(non-inverting)
(theoretical)
± 2% max.
0.31 fc
0.42 fc
1.00 fc
2.00 fc
Phase Match1
fc - 100 kHz ± 3° max.
± 1.5° typ.
Amplitude Accuracy
1.0 - 1.25 fc
(theoretical)
fc
± 0.01% /°C
-3 dB
-231°
± 2% max.
40.0 dB
30.0 dB
3.01 dB
-0.07 dB
fc - 100 kHz
± 0.3 dB max. 1.0 - 1.25 fc
± 0.15 dB typ.
1.25 fc -100 kHz ± 0.2 dB max. 1.25 fc -100 kHz
± 0.1 dB max.
0.41 fc
0.53 fc
1.00 fc
2.00 fc
± 3° max.
± 1.5° typ.
fc
± 0.01% /°C
-3 dB
-245°
± 2% max.
40.0 dB
30.0 dB
3.01 dB
-0.25 dB
fc - 100 kHz
0.43 fc
0.56 fc
1.00 fc
2.00 fc
± 3° max.
± 1.5° typ.
± 0.3 dB max. 1.0 - 1.25 fc ± 0.3 dB max.
± 0.15 dB typ.
± 0.15 dB typ.
± 0.2 dB max. 1.25 fc -100 kHz ± 0.2 dB max.
± 0.1 dB typ.
± 0.1 dB typ.
Total Harmonic
Distortion @ 1kHz
< - 100 dB typ.
< - 88 dB typ.
< - 88 dB typ.
Wide Band Noise
400 mVrms typ.
400 mVrms typ.
400 mVrms typ.
100 mVrms typ.
100 mVrms typ.
100 mVrms typ.
FMA-02A
FMA-02A
FMA-02A
(5 Hz - 2 MHz)
Narrow Band Noise
(5 Hz - 100 kHz)
Filter Mounting
Assembly
1. Unit to unit match for the same transfer function, set to the same frequency and operating configuration, and from the same manufacturing lot.
4
25 Locust St, Haverhill, Massachusetts 01830 • Tel: 800/252-7074, 978/374-0761 • FAX: 978/521-1839
e-mail: [email protected] • Web Address: http://www.freqdev.com
424 Series
Pin-Out and Package Data
Ordering Information
Specification
(25°C and Vs ± 15 Vdc)
Bottom View
0.80
0.70
Gnd Os4
-Vs +Vs
Out
D0
D1
+5V
In
D2 D3
1.80
1.50
1.60
1.30
0.80
0.90
1.00
1.10
0.10
0.00
±15 Vdc
±12 to ±18 Vdc
±18 Vdc
Temperature
Operating
Storage
0.15 min.
0.025 Dia.
Alldimensions
dimensions are
inches
All
arein in
inches
Allcase
case dimensions
±0.02"
All
dimensions
±0.02
11 W typ.
10 W max.
±10V
±2 mA
22 mV typ.
20 mV max.
50 mV/°C
±13 mA typ.
±20 mA max.
(Side View)
424
0.00
0.50
Offset Temp. Coeff.
Power Supply (±V)
Rated Voltage
Operating Range
Maximum Safe Voltage
Quiescent Current
4-Pole
0.30
0.30
Linear Operating Range
Maximum Current2
Offset Voltage3
Pin-Out & Package Data
10 k W min.
± 10 Vpeak
±Vs
0.00
Analog Input Characteristics1
Impedance
Voltage Range
Max. Safe Voltage
Analog Output Characteristics
Impedance (Closed Loop)
Filter Mounting Assembly-See FMA-02A
Ordering Information
Filter Type
424 Transfer Function
L - Low Pass
H - High Pass
B - Butterworth
L - Bessel
Y2 - 0.2 Ripple Chebychev
Y5 - 0.5 Ripple Chebychev
-20 to +70°C
-25 to +85°C
424 L4L-7
Model Number
Notes:
Binary Tuning Ranges
Model
Tuning
*Minimum
Number Range (Hz) Step (Hz)
1
10-160
10
2
25-400
25
3
50-800
50
4
100-1.60k
100
5
250-4.00k
250
6
500-8.00k
500
7
1.00k-16.0k
1.00k
8
2.50k-40.0k
2.50k
9
5.00k-80.0k
5.00k
10
6.40k-102.4k
6.40k
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.
DC Offset Adjustment
± Vs
Do not connect
if trim is not
required.
20 k W
(Cermet)
*Contact factory for custom step frequency. Maximum step 6.40 kHz.
Discrete Frequency’s
Customer must specify f1 ,f2 ,f3, f4,f5. Maximum span f1 fi f5 1,000:1.
OS
- Vs
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-00424-01
5
25 Locust St, Haverhill, Massachusetts 01830 • Tel: 800/252-7074, 978/374-0761 • FAX: 978/521-1839
e-mail: [email protected] • Web Address: http://www.freqdev.com
Low-Pass
4-Pole
Appendix A
Bessel
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
Frequency Response
Amp (dB)
0
-40
-60
-80
-100
0.1
2
3 4 5 6 78
1.0 2 3 4 5 6 7 10.0
Normalized Frequency(f/fc)
Delay (Normalized)
Delay (sec)
1.0
0.5
0.0
0.1
0.15 2
3
4
5 6 7 89
1.0 1.5
Normalized Time (1/f sec)
Step Response (V/V)
Step Response
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).
Actual Delay =
-20
1.2
1.0
0.8
0.6
0.4
0.2
-0.0
-0.2
0
1
2
3
4
Normalized Time (1/f sec)
Normalized Delay
Actual Corner Frequency (fc) in Hz
2
25 Locust St., Haverhill, Massachusetts 01830 ∑Tel :800/252-7074, 978/374-0761 ∑FAX:978/521-1839
e-mail: [email protected] ∑Web Address: http://www.freqdev.com ∑Fax on Demand: 978/521-5178
5
Low-Pass
4-Pole
Appendix A
Butterworth
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
Frequency Response
Amp (dB)
0
-40
-60
-80
-100
0.1
2
3 4 5 6 78
1.0 2 3 4 5 6 7 10.0
Normalized Frequency(f/fc)
Delay (Normalized)
Delay (sec)
2.0
1.0
0.0
0.1
0.15 2
3
4
5 6 7 89
1.0 1.5
Normalized Frequency(f/fc)
Step Response (V/V)
Step Response
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).
Actual Delay =
-20
1.2
1.0
0.8
0.6
0.4
0.2
-0.0
0
1
2
3
4
Normalized Time (1/f sec)
Normalized Delay
Actual Corner Frequency (fc) in Hz
7
25 Locust St., Haverhill, Massachusetts 01830 ∑Tel :800/252-7074, 978/374-0761 ∑FAX:978/521-1839
e-mail: [email protected] ∑Web Address: http://www.freqdev.com ∑Fax on Demand: 978/521-5178
5
Low-Pass
4-Pole, 0.2 dB Ripple
Appendix A
Chebychev
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
Frequency Response
Amp (dB)
0
-40
-60
-80
-100
0.1
2
3 4 5 6 78
1.0 2 3 4 5 6 7 810.0
Normalized Frequency(f/fc)
Delay (Normalized)
Delay (sec)
2.0
1.0
0.0
0.1
0.15 2
3
4
5 6 7 89
1.0 1.5
Normalized Time (1/f sec)
Step Response (V/V)
Step Response
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).
Actual Delay =
-20
1.2
1.0
0.8
0.6
0.4
0.2
-0.0
0
1
2
3
4
Normalized Time (1/f sec)
Normalized Delay
Actual Corner Frequency (fc) in Hz
12
25 Locust St., Haverhill, Massachusetts 01830 ∑Tel :800/252-7074, 978/374-0761 ∑FAX:978/521-1839
e-mail: [email protected] ∑Web Address: http://www.freqdev.com ∑Fax on Demand: 978/521-5178
5
Low-Pass
4-Pole, 0.5 dB Ripple
Appendix A
Chebychev
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
Frequency Response
Amp (dB)
0
-40
-60
-80
-100
0.1
2
3 4 5 6 78
2
3 4 5 6 78
1.0
10.0
Normalized Frequency(f/fc)
Delay (Normalized)
Delay (sec)
2.0
1.0
0.0
0.1
0.15 2
3
4
5 6 7 89
1.0 1.5
Normalized Time (1/f sec)
Step Response (V/V)
Step Response
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).
Actual Delay =
-20
1.2
1.0
0.8
0.6
0.4
0.2
-0.0
0
1
2
3
4
Normalized Time (1/f sec)
Normalized Delay
Actual Corner Frequency (fc) in Hz
15
25 Locust St., Haverhill, Massachusetts 01830 ∑Tel :800/252-7074, 978/374-0761 ∑FAX:978/521-1839
e-mail: [email protected] ∑Web Address: http://www.freqdev.com ∑Fax on Demand: 978/521-5178
5
High-Pass
4-Pole
Appendix A
Butterworth
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
Frequency Response
Amp (dB)
0
-20
-40
-60
-80
-100
0.1
2
3 4 5 6 78
1.0 2 3 4 5 6 7 10.0
Normalized Frequency(f/fc)
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).
Actual Delay =
Normalized Delay
Actual Corner Frequency (fc) in Hz
27
25 Locust St., Haverhill, Massachusetts 01830 ∑Tel :800/252-7074, 978/374-0761 ∑FAX:978/521-1839
e-mail: [email protected] ∑Web Address: http://www.freqdev.com ∑Fax on Demand: 978/521-5178
High-Pass
4-Pole, 0.2 dB Ripple
Appendix A
Chebychev
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
Frequency Response
Amp (dB)
0
-20
-40
-60
-80
-100
0.1
2
3 4 5 6 78
1.0 2 3 4 5 6 7 8 10.0
Normalized Frequency(f/fc)
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).
Actual Delay =
Normalized Delay
Actual Corner Frequency (fc) in Hz
31
25 Locust St., Haverhill, Massachusetts 01830 ∑Tel :800/252-7074, 978/374-0761 ∑FAX:978/521-1839
e-mail: [email protected] ∑Web Address: http://www.freqdev.com ∑Fax on Demand: 978/521-5178
High-Pass
4-Pole, 0.5 dB Ripple
Appendix A
Chebychev
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
Frequency Response
Amp (dB)
0
-20
-40
-60
-80
-100
0.1
2
3 4 5 6 78
2
3 4 5 6 78
1.0
10.0
Normalized Frequency(f/fc)
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).
Actual Delay =
Normalized Delay
Actual Corner Frequency (fc) in Hz
33
25 Locust St., Haverhill, Massachusetts 01830 ∑Tel :800/252-7074, 978/374-0761 ∑FAX:978/521-1839
e-mail: [email protected] ∑Web Address: http://www.freqdev.com ∑Fax on Demand: 978/521-5178