D66 & DP66 Series
1.0 Hz to 100 kHz
Fixed Frequency
Description
The D66 and DP66 Series of small 6-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 D66 filters can serve in low-pass or high-
pass applications (DP66, 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 (DP66,
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 to 16 bit resolution.
• 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.
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
1
32 Pin DIP
6-Pole Filters
Available
D66L6B
DP66L6B
D66L6L
DP66L6L
Low-Pass Models:
......................
Page
6-pole Butterworth ....................................2
6-pole Butterworth (Low Power) ..............2
6-pole Bessel ............................................2
6-pole Bessel (Low Power) ......................2
Available High-Pass Models:
..................................
D66H8B
6-pole Butterworth ....................................2
General Specifications:
........................................
Pin-out/package data & ordering information ..........3
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
D66 & DP66 Series
Fixed Frequency
Model
Product Specifications
Transfer Function
Size
Range f
c
D66
DP66
Theoretical Transfer
Characteristics
Passband Ripple
(theoretical)
6-Pole
Low-Pass and High-Pass Filters
D66L6L & DP66L6L
Low-Pass
6-Pole, Bessel
1.8” x 0.8” x 0.3”
1 Hz to 100 kHz
1 Hz to 5 kHz
Appendix A
Page 3
0.0 dB
0 ± 0.1 dB max.
0 ± 0.05 dB typ.
Transfer Function
Size
Range f
c
D66
DP66
Theoretical Transfer
Characteristics
Passband Ripple
(theoretical)
D66L6B & DP66L6B
Low-Pass
6-Pole, Butterworth
1.8” x 0.8” x 0.3”
1 Hz to 100 kHz
1 Hz to 5 kHz
Appendix A
Page 8
0.0 dB
0 ± 0.1 dB max.
0 ± 0.05 dB typ.
Model
D66H6B
High-pass
6-Pole, Butterworth
1.8” x 0.8” x 0.3”
1 Hz to 100 kHz
Not Available
Appendix A
Page 28
0.0 dB
0 ± 0.1 dB to 100 kHz
0 ± 0.05 dB to 120 kHz
DC Voltage Gain
(non-inverting)
Voltage Gain
(non-inverting)
Stopband
Attenuation Rate
36 dB/octave
36 dB/octave
Stopband
Attenuation Rate
Power Bandwidth
Power Bandwidth
36 dB min.
(-6dB) 1 MHz
120 kHz
f
c
± 0.01% /°C
-3dB
-270°
80.0 dB
60.0 dB
3.01 dB
0.00 dB
f
c
- 100 kHz
± 1% max.
Cutoff Frequency
Stability
Amplitude
Phase
Filter Attenuation
(theoretical)
f
c
± 0.01% /°C
-3dB
-270°
0.29 dB
3.01 dB
60.0 dB
80.0 dB
0 - 0.8 f
c
0.8 f
c
- 1.0 f
c
± 1% max.
f
c
± 0.01% /°C
-3dB
-155°
1.89 dB
3.01 dB
60.0 dB
80.0 dB
0 - f
c
± 1% max.
Cutoff Frequency
Stability
Amplitude
Phase
Filter Attenuation
(theoretical)
0.80 f
c
1.00 f
c
3.16 f
c
4.64 f
c
± 2° max.
± 1° typ.
± 3° max.
± 1.5° typ.
0.80 f
c
1.00 f
c
5.41 f
c
7.99 f
c
± 2° max.
± 1° typ.
.21 f
c
.32 f
c
1.00 f
c
2.5 f
c
± 3° max.
± 1.5° typ.
Phase Match
1
Phase Match
1
Amplitude Accuracy
(theoretical)
0 - 0.8 f
c
± 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 - f
c
± 0.2 dB max.
± 0.1 dB typ.
Amplitude Accuracy
(theoretical)
± 0.3 dB max.
± 0.15 dB typ.
1.25f
c
-100kHz ± 0.2 dB max.
± 0.1 dB typ.
1.0 - 1.25 f
c
Total Harmonic
Distortion @ 1 kHz
D66
DP66
Wide Band Noise
(5 Hz - 2 MHz)
<-100 dB typ.
<-80 dB typ.
200
mVrms
typ.
50
mVrms
typ.
<-100 dB typ.
<-80 dB typ.
200
mVrms
typ.
50
mVrms
typ.
Total Harmonic
Distortion @ 1 kHz
D66
Wide Band Noise
(5 Hz - 2 MHz)
<-88 dB typ.
400
mVrms
typ.
100
mVrms
typ.
Narrow Band Noise
(20 Hz - 100 kHz)
Narrow Band Noise
(20 Hz - 100 kHz)
Filter Mounting
Assembly
FMA-01A
FMA-01A
Filter Mounting
Assembly
FMA-01A
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
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
D66 & DP66 Series
Specification
(25°C and Vs ± 15 Vdc)
Analog Input Characteristics
Impedance
10 kW min.
Voltage Range
± 10 Vpeak
Max. Safe Voltage
± Vs
Analog Output Characteristics
Impedance(Closed Loop)
1
W
typ.
10
W
max.
Linear Operating Range
± 10 V
2
Maximum Current
± 2 mA
3
Offset Voltage
2 mV typ.
20 mV max.
Offset Temp. Coeff.
50
mV
/ °C
Power Supply (±V)
Rated Voltage
Operating Range
Maximum Safe Voltage
Quiescent Current D66
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
± 19 mA typ.
± 30 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
Quiescent Current DP66
±
7.0
mA typ.
±
8.0
mA max.
0 to + 70 °C
- 25 to + 85 °C
Ordering Information
Filter Type
Transfer Function
B
- Butterworth
L
- Bessel
L
- Low Pass
H
- High Pass
Temperature
Operating
Storage
-
DC Offset Adjustment
± Vs
Do not connect
if trim is not
required.
20 k
W
(Cermet)
OS
Power Level
D66L6B-849 Hz
D
– Standard Power
DP
– Low Power
Notes:
- 3 dB Corner Frequency
5
e.g., 849 Hz
2.50 kHz
33.3 kHz
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.
- Vs
4. Units operate with or with out offset pin connected.
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-00D66-00
3
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
Low-Pass
6-Pole
Appendix A
Theoretical Transfer Characteristics
1
f/fc
Amp
Phase
Delay
(Hz)
(dB)
(deg)
(sec)
0.00
0.00
0.00
.430
0.10
-0.029
-15.5
.430
0.20
-0.116
-31.0
.430
0.30
-0.261
-46.5
.430
0.40
-0.465
-62.0
.430
0.50
-0.728
-77.4
.430
0.60
-1.05
-92.9
.430
0.70
-1.44
-108
.430
0.80
-1.89
-124
.430
0.85
-2.15
-132
.430
0.90
-2.42
-139
.430
0.95
-2.70
-147
.430
1.00
-3.01
-155
.430
1.10
-3.68
-170
.429
1.20
-4.44
-186
.428
1.30
-5.29
-201
.426
1.40
-6.23
-216
.422
1.50
-7.29
-232
.416
1.60
-8.46
-246
.401
1.70
-9.74
-261
.393
1.80
-11.1
-275
.376
1.90
-12.6
-287
.357
2.00
-14.2
-300
.335
2.25
-18.3
-328
.279
2.50
-22.6
-351
.228
2.75
-26.7
-369
187
3.00
-30.7
-385
.156
3.25
-34.5
-398
.131
3.50
-38.1
-408
.111
4.00
-44.7
-426
.083
5.00
-55.9
-449
.052
6.00
-65.2
-465
.036
7.00
-73.2
-476
.026
8.00
-80.1
-484
.020
9.00
-86.2
-490
.015
10.0
-91.6
-495
.013
Bessel
Frequency Response
0
Amp (dB)
-20
-40
-60
-80
-100
0.1
2 3 4 56781.0
2 3 4 567 10.0
Normalized Frequency(f/fc)
Delay
(Normalized)
1.0
Delay (sec)
0.5
0.0
3 4 5 6 7 89
0.1 0.15 2
1.0 1.5
Normalized Time (1/f sec)
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).
Normalized Delay
Actual Delay =
Actual Corner Frequency (fc) in Hz
1
2
3
4
Normalized Time (1/f sec)
5
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
3
Low-Pass
6-Pole
Appendix A
Theoretical Transfer Characteristics
1
f/fc
Amp
Phase
Delay
(Hz)
(dB)
(deg)
(sec)
0.00
0.00
0.00
.615
0.10
0.00
-22.2
.617
0.20
0.00
-44.5
.624
0.30
0.00
-67.2
.637
0.40
0.00
-90.4
.656
0.50
-0.001
-115
.685
0.60
-0.009
-140
.731
0.70
-0.060
-167
.803
0.80
-0.289
-198
.911
0.85
-0.578
-215
.970
0.90
-1.080
-233
1.02
0.95
-1.88
-252
1.03
1.00
-3.01
-270
1.00
1.10
-6.17
-304
.845
1.20
-9.96
-331
.660
1.30
-13.9
-352
.518
1.40
-17.6
-368
.417
1.50
-21.2
-382
.345
1.60
-24.5
-393
.291
1.70
-27.7
-403
.251
1.80
-30.6
-412
.219
1.90
-33.5
-419
.193
2.00
-36.1
-425
.171
2.25
-42.3
-439
.132
2.50
-47.8
-450
.105
2.75
-52.7
-458
.086
3.00
-57.3
-465
.071
3.25
-61.4
-471
.060
3.50
-65.3
-476
.052
4.00
-72.2
-484
.039
5.00
-83.9
-496
.025
6.00
-503
.017
-93.4
7.00
-508
.012
-101
8.00
-512
.0097
-108
9.00
-515
.0076
-115
10.0
-518
.0062
-120
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
3
4
5 6 7 89
Normalized Time (1/f sec)
1.0
1.5
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
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
8
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