Filters > D70

D70 Series

100 Hz to 50 kHz
DIP Filters

Specifications

Pin-out and package data

Ordering Information


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D70 Series
Fixed Frequency
8-, 6-, 4-Pole
Low-Pass Filters
 

 

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Description

The D70 Series of small, fixed-frequency, linear active DIP filters provides high performance linear, multi-pole filtering in a compact package, with a broad range of pole configurations. These Butterworth and Bessel low-pass and Butterworth high-pass filters combine the excellent performance of linear multipole filter design with the space saving of the dual in-line package (DIP). Each model comes factory tuned to a user-specified corner frequency between 100 Hz and 50 kHz. These fully self-contained units require no external components or adjustments. They operate with dynamic input voltage range from non-critical ±5V to ±18V power supplies.

Features/Benefits:

  • Compact DIP design minimizes board space requirements
  • Plug-in ready-to-use, reducing engineering design and manufacturing time
  • Factory tuned, no external clocks or adjustments needed
  • Low harmonic distortion and wide signal-to-noise ratio to 14 bit resolution
  • Broad range of pole configurations and corner frequencies to meet a wide range of applications

 

Available High-Pass Models:

D70H8B
8-pole Butterworth
D70H6B
6-pole Butterworth
D70H4B
4-pole Butterworth
 

Applications

  • Anti­alias 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

Available Low-Pass Models:

D70L8B
8-pole Butterworth
D70L6B
6-pole Butterworth
D70L4B
4-pole Butterworth
D70L8L
8-pole Bessel
D70L6L
6-pole Bessel
D70L4L
4-pole Bessel


Fixed Frequency
8-, 6-, 4-Pole
Low-Pass Filters

Model D70L8B D70L6B D70L4B
Product Specifications
Transfer Function


Size

Range fc

8-Pole,
Butterworth

0.84” x 0.65” x 0.31”

100 Hz to 50 kHz

6-Pole,
Butterworth

0.84” x 0.65” x 0.31”

100 Hz to 50 kHz

4-Pole,
Butterworth

0.65” x 0.51” x 0.31”

100 Hz to 50 kHz

Theoretical Transfer
Characteristics
Click to view
Click to view
Click to view
Passband Ripple
   (theoretical)
0.0 dB 0.0 dB 0.0 dB
DC Voltage Gain
   
(non-inverting)
0 ± 0.02 dB typ. 0 ± 0.02 dB typ. 0 ± 0.02 dB typ.
Stopband
Attenuation Rate
48 dB/octave 36 dB/octave 24 dB/octave
Cutoff Frequency
  Stability
  Amplitude
  Phase
fc          ±2% max.
± 0.02% /°c
-3 dB
-360°
fc          ±2% max.
± 0.02% /°c
-3 dB
-270°
fc          ±2% max.
± 0.02% /°c
-3 dB
-180°
Filter Attenuation
   
(theoretical)
0.12 dB       0.80 fc
3.01 dB       1.00 fc
60.0 dB       2.37 fc
80.0 dB       3.16 fc
0.29 dB       0.80 fc
3.01 dB       1.00 fc
60.0 dB       3.16 fc
80.0 dB       4.64 fc
0.67 dB      0.80 fc
3.01 dB       1.00 fc
60.0 dB       5.62 fc
80.0 dB       10.0 fc
Phase Match1

 

 

     
Amplitude Accuracy1
   
(theoretical)

     
Total Harmonic
Distortion @ 1 kHz
< -90 dB < -90 dB < -90 dB
Wide Band Noise
   
(5 Hz - 4 MHz)
200 µVrms typ. 200 µVrms typ. 200 µVrms typ.
Narrow Band Noise
(5 Hz - 50 kHz)
50 µVrms typ. 50 µVrms typ. 50 µVrms typ.
Filter Mounting
Assembly
FMA-01S FMA-01S FMA-01S
 

1. Phase Match and Amplitude Accuracy are within ±2% max., ±1% typ. of the theoretical transfer characteristics.


Fixed Frequency
8-, 6-, 4-Pole
Low-Pass Filters

Model D70L8L D70L6L D70L4L
Product Specifications
Transfer Function


Size

Range fc

8-Pole,
Bessel

0.84” x 0.65” x 0.31”

100 Hz to 50 kHz

6-Pole,
Bessel

0.84” x 0.65” x 0.31”

100 Hz to 50 kHz

4-Pole,
Bessel

0.65” x 0.51” x 0.31”

100 Hz to 50 kHz

Theoretical Transfer
Characteristics
Click to view
Click to view
Click to view
Passband Ripple
   (theoretical)
0.0 dB 0.0 dB 0.0 dB
DC Voltage Gain
   
(non-inverting)
0 ± 0.02 dB typ. 0 ± 0.02 dB typ. 0 ± 0.02 dB typ.
Stopband
Attenuation Rate
48 dB/octave 36 dB/octave 24 dB/octave
Cutoff Frequency
  Stability
  Amplitude
  Phase
fc          ±2% max.
± 0.02% /°c
-3 dB
-182°
fc          ±2% max.
± 0.02% /°c
-3 dB
-155°
fc          ±2% max.
± 0.02% /°c
-3 dB
-121°
Filter Attenuation
   
(theoretical)
1.91 dB       0.80 fc
3.01 dB       1.00 fc
60.0 dB       4.52 fc
80.0 dB       6.07 fc
1.89 dB       0.80 fc
3.01 dB       1.00 fc
60.0 dB       5.41 fc
80.0 dB       7.99 fc
1.86 dB       0.80 fc
3.01 dB       1.00 fc
60.0 dB       8.48 fc
80.0 dB       15.12 fc
Phase Match1

 

 

     
Amplitude Accuracy1
   
(theoretical)

     
Total Harmonic
Distortion @ 1 kHz
< -90 dB < -90 dB < -90 dB
Wide Band Noise 200 µVrms typ. 200 µVrms typ. 200 µVrms typ.
Narrow Band Noise 50 µVrms typ. 50 µVrms typ. 50 µVrms typ.
Filter Mounting
Assembly
FMA-01S FMA-01S FMA-01S
 

1. Phase Match and Amplitude Accuracy are within ±2% max., ±1% typ. of the theoretical transfer characteristics.


Fixed Frequency
8-, 6-, 4-Pole
High-Pass Filters

Model D70H8B D70H6B D70H4B
Product Specifications
Transfer Function


Size

Range fc

8-Pole,
Butterworth

0.84” x 0.65” x 0.31”

100 Hz to 50 kHz

6-Pole,
Butterworth

0.84” x 0.65” x 0.31”

100 Hz to 50 kHz

4-Pole,
Butterworth

0.65” x 0.51” x 0.31”

100 Hz to 50 kHz

Theoretical Transfer
Characteristics
Click to view
Click to view
Click to view
Passband Ripple
   (theoretical)
0.0 dB 0.0 dB 0.0 dB
Voltage Gain
   
(non-inverting)
0 ± 0.02 dB typ. 0 ± 0.02 dB typ. 0 ± 0.02 dB typ.
Power Bandwidth 120 kHz 120 kHz 120 kHz
Small Signal Bandwidth (-6 dB) 1MHz (-6 dB) 1MHz (-6 dB) 1MHz
Stopband
Attenuation Rate
48 dB/octave 36 dB/octave 24 dB/octave
Cutoff Frequency
  Stability
  Amplitude
  Phase
fc          ±2% max.
± 0.02% /°c
-3 dB
-360°
fc          ±2% max.
± 0.02% /°c
-3 dB
-270°
fc          ±2% max.
± 0.02% /°c
-3 dB
-180°
Filter Attenuation
   
(theoretical)
80.0 dB        0.31 fc
60.0 dB        0.42 fc
3.01 dB       1.00 fc
00.0 dB       2.00 fc
80.0 dB        0.21 fc
60.0 dB        0.32 fc
3.01 dB       1.00 fc
00.0 dB       2.50 fc
80.0 dB        0.10 fc
60.0 dB        0.18 fc
3.01 dB       1.00 fc
00.0 dB       4.0 fc
Phase Match1

 

 

     
Amplitude Accuracy1
   
(theoretical)

     
Total Harmonic
Distortion @ 1 kHz
< -80 dB < -80 dB < -80 dB
Wide Band Noise
   
(20 Hz - 4 MHz)
400 µVrms typ. 400 µVrms typ. 400 µVrms typ.
Narrow Band Noise
   
(20 Hz - 100 kHz)
100 µVrms typ. 100 µVrms typ. 100 µVrms typ.
Filter Mounting
Assembly
FMA-01S FMA-01S FMA-01S
 

1. Phase Match and Amplitude Accuracy are within ±2% max., ±1% typ. of the theoretical transfer characteristics.

 


Specifications

(@ 25°C and Vs ±15 Vdc)

Analog Input Characteristics 1
  • Impedance: 10 kΩ min.
  • Voltage Range: ± 10 Vpeak
  • Max. Safe Voltage: ± Vs

Analog Output Characteristics

  • Impedance: 1 W
  • Linear Operating Range: ± 10 V
  • Maximum Current2: ± 10 mA
  • Offset Voltage3: ±10 mV
  • Offset Temp. Coeff.: 50 µV / °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.
  4. 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 100 Hz to 50 kHz.
Power Supply (+/-Vs)
  • Rated Voltage: ± 15 Vdc
  • Operating Range: ± 5 to ± 18 Vdc
  • Maximum Safe Voltage: ± 18 Vdc
  • Quiescent Current:
    8 Pole: ± 18 mA
    6 Pole: ± 15 mA
    4 Pole: ± 10 mA

Temperature

  • Operating: 0 to + 70°C
  • Storage: -25 to+85°C


Pin-Out and Package Data

Filter Mounting Assembly-See FMA-01S


Ordering Information


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.


Frequency Devices, Inc.
Your engineering partner for signal conditioning
  1784 Chessie Lane
Ottawa, IL 61350

Fax: (815) 434-8176
e-mail: sales@freqdev.com

 

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or (800) 252-7074 (U.S. only)

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