D64 & DP64 Series
1.0 Hz to 100 kHZ
Fixed Frequency
Description
The D64 and DP64 Series of small 4-pole fixed-
frequency, precision active filters provide high
performance linear active filtering in a compact 32-
pin DIP package, with a broad range of corner
frequencies and a choice of transfer functions.
Individual D64 filters can serve in low-pass or high-
pass applications (DP64, low-pass only) or be
combined to create custom band-pass or band-
reject filters. These fully self-contained units
require no external components or adjustments.
Each model comes factory tuned to a user-specified
corner frequency between 1 Hz and 100 kHz (DP64,
1 Hz to 5 kHz) and operate with low total harmonic
distortion over a wide dynamic input voltage range
from non-critical +/-5V to +/-18V power supplies.
Features/Benefits:
• Low harmonic distortion and wide signal-to-noise
ratio
• Compact 1.8"L x 0.8"W x 0.3"H minimizes board
space requirements.
• 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.
Available Low-Pass Models:
. . . . . . . . . . .Page
D64L4B & DP64L4B
4-pole Butterworth . . . . . .2
D64L4L & DP64L4L
4-pole Bessel . . . . . . . . . .2
D64L4Y2 & DP64L4Y2
4-pole Cheby
(0.2 dB Ripple) . . . . . . . . .2
D64L4Y5 & DP64L4Y5
4-pole Cheby
(0.5 dB Ripple) . . . . . . . . .2
Available
D64H4B
D64H4Y2
D64H4Y5
High-Pass Models:
4-pole Butterworth . . . . . . . . . . . . . . . .3
4-pole Cheby (0.2 dB Ripple) . . . . . . . .3
4-pole Cheby (0.5 dB Ripple) . . . . . . . .3
32-Pin DIP
4 - Pole Filters
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
• Acoustic and vibration analysis and control
• Noise elimination
• Signal reconstruction
General Specifications:
Pin-out/package data & ordering information . . . .4
25 Locust St, Haverhill, Massachusetts 01830 • Tel: 800/252-7074, 978/374-0761 • FAX: 978/521-1839
e-mail: sales@freqdev.com • Web Address: http://www.freqdev.com
D64 & DP64 Series
Fixed Frequency
Model
Product Specifications
Transfer Function
Size
Range f
c
D64
DP64
Theoretical Transfer
Characteristics
Passband Ripple
(theoretical)
4-Pole
Low-Pass Filters
D64L4L & DP64L4L
D64L4Y2 & DP64L4Y2
D64L4Y5 & DP64L4Y5
D64L4B & DP64L4B
4-Pole, Butterworth
1.8” x 0.8” x 0.3”
1 Hz to 100 kHz
1 Hz to 5 kHz
Appendix A
Page 7
0.0 dB
0 ± 0.1 dB max.
0 ± 0.05 dB typ.
24 dB/octave
f
c
± 0.01% /°C
-3dB
-180°
0.67 dB
3.01 dB
30.0 dB
40.0 dB
0 - 0.8 f
c
0.8 fc - 1.0 f
c
± 1% max.
4-Pole, Bessel
1.8” x 0.8” x 0.3”
1 Hz to 100 kHz
1 Hz to 5 kHz
Appendix A
Page 2
0.0 dB
0 ± 0.1 dB max.
0 ± 0.05 dB typ.
24 dB/octave
f
c
± 0.01% /°C
-3dB
-121°
1.86 dB
3.01 dB
30.0 dB
40.0 dB
0 - f
c
± 1% max.
4-Pole, Chebychev,
1.8” x 0.8” x 0.3”
1 Hz to 100 kHz
1 Hz to 5 kHz
Appendix A
Page 12
0.20 dB
0 ± 0.1 dB max.
0 ± 0.05 dB typ.
24 dB/octave
f
c
± 0.01% /°C
-3dB
-231°
-0.20 dB
3.01 dB
30.0 dB
40.0 dB
0 - 0.8 f
c
0.8 f
c
- 1.0 f
c
± 1% max.
4-Pole, Chebychev,
0.5 dB Ripple
1.8” x 0.8” x 0.3”
1 Hz to 100 kHz
1 Hz to 5 kHz
Appendix A
Page 15
0.50 dB
0 ± 0.1 dB max.
0 ± 0.05 dB typ.
24 dB/octave
f
c
± 0.01% /°C
-3dB
-245°
-0.43 dB
3.01 dB
30.0 dB
40.0 dB
± 1% max.
DC Voltage Gain
(non-inverting)
Stopband
Attenuation Rate
Cutoff Frequency
Stability
Amplitude
Phase
Filter Attenuation
(theoretical)
0.80 f
c
1.00 f
c
2.37 f
c
3.16 f
c
± 2° max.
± 1° typ.
± 3° max.
± 1.5° typ.
0.80 f
c
1.00 f
c
3.50 f
c
4.72 f
c
± 2° max.
± 1° typ.
0.80 f
c
1.00 f
c
1.89 f
c
2.46 f
c
0.80 f
c
1.00 f
c
1.80 f
c
2.33 f
c
± 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.
Phase Match
1
± 2° max. 0 - 0.8 f
c
± 1° typ.
± 3° max. 0.8 f
c
- 1.0 f
c
± 1.5° typ.
0 - 0.8 f
c
0.8 - 1.0 f
c
Amplitude Accuracy
(theoretical)
0 - 0.8 f
c
± 0.2 dB max.
± 0.1 dB typ.
0.8 fc - 1.0 f
c
± 0.3 dB max.
± 0.15 dB typ.
0 - f
c
± 0.2 dB max.
± 0.1 dB typ.
± 0.2 dB max.
± 0.1 dB typ.
0.8 f
c
- 1.0 f
c
± 0.3 dB max.
± 0.15 dB typ.
0 - 0.8 f
c
Total Harmonic
Distortion @ 1 kHz
D64
DP64
Wide Band Noise
(5 Hz - 2 MHz)
<-100 dB
<-80 dB
200
µVrms
typ.
50
µVrms
typ.
<-100 dB
<-80 dB
200
µVrms
typ.
50
µVrms
typ.
<-88 dB
<-80 dB
200
µVrms
typ.
50
µVrms
typ.
<-88 dB
<-80 dB
200
µVrms
typ.
50
µVrms
typ.
Narrow Band Noise
(20 Hz - 100 kHz)
Filter Mounting
Assembly
FMA-01S
FMA-01S
FMA-01S
FMA-01S
1. Unit to unit match for the same transfer function, set to the same frequency and operating configuration, and from the same manufacturing lot.
2
25 Locust St, Haverhill, Massachusetts 01830 • Tel: 800/252-7074, 978/374-0761 • FAX: 978/521-1839
e-mail: sales@freqdev.com • Web Address: http://www.freqdev.com
D64 & DP64 Series
Fixed Frequency
Model
Product Specifications
Transfer Function
Size
Range f
c
D64
DP64
Theoretical Transfer
Characteristics
Passband Ripple
(theoretical)
4-Pole
High-Pass Filters
64H4Y2
D64H4Y5
D64H4B
4-Pole, Butterworth
1.8” x 0.8” x 0.3”
1 Hz to 100 kHz
Not Available
Appendix A
Page 27
0.0 dB
0 ± 0.2 dB to 100 kHz
0 ± 0.5 dB to 120 kHz
120 kHz
(-6dB) 1 MHz
24 dB/octave
f
c
± 0.01% /°C
-3dB
-180°
40 dB
30 dB
3.01 dB
0.02 dB
f
c
- 100 kHz
± 1% max.
4-Pole, Chebychev,
0.2 dB Ripple
1.8” x 0.8” x 0.3”
1 Hz to 100 kHz
Not Available
Appendix A
Page 31
0.20 dB
0 ± 0.2 dB to 100 kHz
0 ± 0.5 dB to 120 kHz
120 kHz
(-6dB) 1 MHz
24 dB/octave
f
c
± 0.01% /°C
-3dB
-231°
40 dB
30 dB
3.01 dB
-0.07 dB
f
c
- 100 kHz
± 1% max.
4-Pole, Chebychev,
0.5 dB Ripple
1.8” x 0.8” x 0.3”
1 Hz to 100 kHz
Not Available
Appendix A
Page 33
0.50 dB
0 ± 0.2 dB to 100 kHz
0 ± 0.5 dB to 120 kHz
120 kHz
(-6dB) 1 MHz
24 dB/octave
f
c
± 0.01% /°C
-3dB
-245°
40 dB
30 dB
3.01 dB
-0.25 dB
f
c
- 100 kHz
± 1% max.
Voltage Gain
(non-inverting)
Power Bandwidth
Small Signal Bandwidth
Stopband
Attenuation Rate
Cutoff Frequency
Stability
Amplitude
Phase
Filter Attenuation
(theoretical)
0.31 f
c
0.42 f
c
1.00 f
c
2.00 f
c
± 3° max.
± 1.5° typ.
0.41 f
c
0.53 f
c
1.00 f
c
2.00 f
c
± 3° max.
± 1.5° typ.
0.43 f
c
0.56 f
c
1.00 f
c
2.00 f
c
± 3° max.
± 1.5° typ.
Phase Match
1
Amplitude Accuracy
(theoretical)
± 0.30 dB max. 1.0 - 1.25 f
c
± 0.30 dB max. 1.0 - 1.25 f
c
± 0.30 dB max.
± 0.15 dB typ.
± 0.15 dB typ.
± 0.15 dB typ.
1.25 fc - 100 kHz± 0.20 dB max. 1.25 fc - 100 kHz ± 0.20 dB max. 1.25 fc - 100 kHz ± 0.20 dB max.
± 0.10 dB typ.
± 0.10 dB typ.
± 0.10 dB typ.
1.0 - 1.25 f
c
Total Harmonic
Distortion @ 1 kHz
D64
Wide Band Noise
(5 Hz - 2 MHz)
<-88 dB
400
µVrms
typ.
100
µVrms
typ.
<-88dB
400
µVrms
typ.
100
µVrms
typ.
<-88 dB
400
µVrms
typ.
100
µVrms
typ.
Narrow Band Noise
(20 Hz - 100 kHz)
Filter Mounting
Assembly
FMA-01S
FMA-01S
FMA-01S
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: sales@freqdev.com • Web Address: http://www.freqdev.com
D64 & DP64 Series
Specification
(25°C and Vs ± 15 Vdc)
Analog Input Characteristics
Impedance
10 kΩ min.
Voltage Range
± 10 Vpeak
Max. Safe Voltage
± Vs
Analog Output Characteristics
Impedance(Closed Loop)
1
Ω
typ.
10
Ω
max.
Linear Operating Range
± 10 V
2
Maximum Current
± 2 mA
3
02
mV typ.
Offset Voltage
10 mV max.
Offset Temp. Coeff.
50
µV
/ °C
Power Supply (±V)
Rated Voltage
Operating Range
Maximum Safe Voltage
Quiescent Current D64
DP64
Temperature
Operating
Storage
1
Pin-Out and Package Data
Ordering Information
0.80
Side View
0.025 dia.
1.80
All dimensions are in inches
All case dimensions
±
0.01"
Front View
0.30
0.15 (min)
0.80
0.70
OUT
+VS
-VS OS
4
Bottom View
GND
IN
±
±
±
±
±
±
±
15 Vdc
5 to ± 18 Vdc
18 Vdc
12.5 mA typ.
20 mA max.
3.5 mA typ.
5 mA max.
0.10
0.00
0.00
0.15
0.45
0.55
1.55
1.65
1.80
Filter Mounting Assembly-See FMA-01A
Ordering Information
Filter Type
L
- Low Pass
H
- High Pass
Transfer Function
B
- Butterworth
L
- Bessel
Y2 -
0.2 Ripple Chebychev
Y5
- 0.5 Ripple Chebychev
-
0 to + 70 °C
- 25 to + 85 °C
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.
DC Offset Adjustment
± Vs
Do not connect
if trim is not
required.
20 k
Ω
(Cermet)
OS
Power Level
D64L4B-849 Hz
D
– Standard Power
DP
– Low Power
4. Units operate with or with out offset pin connected.
- 3 dB Corner Frequency
5
e.g., 849 Hz
2.50 kHz
33.3 kHz
- Vs
5. How to Specify Corner Frequency:
Corner frequencies are specified by attaching a three digit frequency designator to the basic
model number. Corner frequencies can range from 1.00 Hz to 100 kHz.
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-00D64-01
4
25 Locust St, Haverhill, Massachusetts 01830 • Tel: 800/252-7074, 978/374-0761 • FAX: 978/521-1839
e-mail: sales@freqdev.com • Web Address: http://www.freqdev.com
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
Step Response (V/V)
1.2
1.0
0.8
0.6
0.4
0.2
-0.0
-0.2
0
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
1
2
3
4
Normalized Time (1/f sec)
5
25 Locust St., Haverhill, Massachusetts 01830
∑
Tel
:800/252-7074, 978/374-0761
∑
FAX:978/521-1839
e-mail: sales@freqdev.com
∑
Web Address: http://www.freqdev.com
∑
Fax on Demand: 978/521-5178
2
