D100L Series

Fixed Frequency
Low Noise
100 Hz to 100 kHz

Specifications

Pin-out and package data

Ordering Information


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D100L Series
4- and 8- Pole Low-Pass Filters

 

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Description

D100L Series filters are low noise and distortion 4- and 8-pole, Butterworth or Bessel fixed frequency low-pass filters. These filters feature near theoretical low noise and distortion performance, by providing up to -120 dB noise floors (20-Bit). D100L's take advantage of FDI's design expertise utilizing high performance amplifiers and surface-mount technology to provide design engineers with precision signal conditioning solutions in a compact package. These fully self-contained units require no external components or adjustments. Each D100L comes factory tuned to a user specified corner frequency between 100 Hz to 100 kHz and operate with low harmonic distortion over an input voltage range to ±10 V.

Features/Benefits:

  • Small 32-pin DIP (1.8"L x 0.8"W) footprint 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 corner frequencies to meet a wide range of applications.

 

  

Applications

  • Transducer output filtering:
  • Production test instrumentation
  • Medical electronics equipment and research
  • Noise and harmonic analysis
  • Frequency spectrum analysis

Available Low-Pass Models:

D100L4L
4-pole Bessel
D100L4B
4-pole Butterworth
D100L8L
8-pole Bessel
D100L8B
8-pole Butterworth

100 Hz to 100 kHz
Low Noise
D100L Series
Fixed Frequency
4- and 8- Pole
Low-Pass Filters

Model D100L4B D100L4L D100L8B D100L8L
Product Specifications
Transfer Function


Size

Range fc

4-Pole,
Butterworth

1.8" x 0.8" x 0.3"

100 Hz to 100 kHz

4-Pole,
Bessel

1.8" x 0.8" x 0.3"

100 Hz to 100 kHz

8-Pole,
Butterworth

1.8" x 0.8" x 0.3"

100 Hz to 100 kHz

8-Pole,
Bessel

1.8" x 0.8" x 0.3"

100 Hz to 100 kHz
Theoretical Transfer
Characteristics
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Passband Ripple
   (theoretical)		 0.0 dB 0.0 dB 0.0 dB 0.0 dB
DC Voltage Gain
   (non-inverting)		 0 ± 0.2 dB typ.
0 ± 0.4 dB max.		 0 ± 0.2 dB typ.
0 ± 0.4 dB max.		 0 ± 0.2 dB typ.
0 ± 0.4 dB max.		 0 ± 0.2 dB typ.
0 ± 0.4 dB max.
Stopband
Attenuation Rate		 24 dB/octave 24 dB/octave 48 dB/octave 48 dB/octave
Cutoff Frequency
  Stability
  Amplitude
  Phase		 fc             ± 1% max.
± 0.01% /°c
- 3 dB
-180°		 fc             ± 1% max.
± 0.01% /°c
- 3 dB
-121°		 fc             ± 1% max.
± 0.01% /°c
- 3 dB
-360°		 fc             ± 1% max.
± 0.01% /°c
- 3 dB
-182°
Filter Attenuation
   (theoretical)		 0.67 dB       0.80 fc
3.01 dB       1.00 fc
30.0 dB       2.37 fc
40.0 dB       3.16 fc		 1.86 dB       0.80 fc
3.01 dB       1.00 fc
30.0 dB       3.50 fc
40.0 dB       4.72 fc		 0.12 dB      0.80 fc
3.01 dB      1.00 fc
60.0 dB      2.37 fc
80.0 dB      3.16 fc		 0.12 dB      0.80 fc
3.01 dB      1.00 fc
60.0 dB      4.52 fc
80.0 dB      6.07 fc
Phase Match1   0 - fc ± 2.0° max
        ± 1.0° typ		 0 - fc ± 2.0° max
        ± 1.0° typ		 0 - fc ± 2.0° max
        ± 1.0° typ		 0 - fc ± 2.0° max
        ± 1.0° typ
Amplitude Accuracy
   (theoretical)		 0 - fc ± 0.2 dB max
        ± 0.1 dB typ		 0 - fc ± 0.2 dB max
        ± 0.1 dB typ		 0 - fc ± 0.2 dB max
        ± 0.1 dB typ		 0 - fc ± 0.2 dB max
        ± 0.1 dB typ
Total Harmonic
Distortion @ 10Vp-p
Fc <=1.0 kHz
Fc <=20 kHz
Fc <=100 kHz		 <-120 dB max.
<-120 dB max.
<-110 dB max.		 <-120 dB max.
<-120 dB max.
<-110 dB max.		 <-120 dB max.
<-120 dB max.
<-105 dB max.		 <-120 dB max.
<-120 dB max.
<-105 dB max.
Narrow Band Noise
(100 kHz BW @ 20Vp-p)
Fc <=1.0 kHz
Fc <=20 kHz
Fc <=100 kHz
(µVrms)

7.0 typ., 12 max.
7.0 typ., 12 max.
22 typ., 40 max.
(µVrms)

7.0 typ., 12 max.
7.0 typ., 12 max.
22 typ., 40 max.
(µVrms)

12 typ., 22 max.
12 typ., 22 max.
40 typ., 70 max.
(µVrms)

12 typ., 22 max.
12 typ., 22 max.
40 typ., 70 max.
Filter Mounting
Assembly2
 
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. Use I/O jumpers to bypass input and output buffers, for low noise operation. With FMA, D100 distortion specs at 50k to 100kHz may degrade slightly.

Specifications

(@ 25°C and Vs ± 5 Vdc)

Analog Input Characteristics 1
Impedance: 1.0 kΩ min.
Voltage Range: ± 10 Vpeak
Max. SafeVoltage: ± Vs

Analog Output Characteristics
Load impedance 1 kΩ min.
Linear Operating Range for THD ± 5V
Operating Range for low Noise ± 10V
Current 2 @ (Vs @ ± 15V) 10 mA max.
Offset Voltage 3 2 mV typ.
20 mV max.
Offset Temp. Coefficient 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. Units operate with or without offset pin connected.
Power Supply (± Vs)
Rated Voltage ± 15 V
Operating Range ± 5 V min.
± 18 V max.
Quiescent Current
D100L4
 40 mA max.
D100L8
 80 mA max.

Temperature Range
Operating 0 to + 70°C
Storage -25 to+85°C

  4

Pin-Out and Package Data

Ordering Information

Notes:

5.
 How to specify Corner Frequency. Corner frequency is specified by attaching a three-digit frequency designator to the basic model number. Corner frequencies can range from 100 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.
Frequency Devices, Inc.
Your engineering partner for signal conditioning
  927 Fosse Rd
Ottawa, IL 61350

e-mail: sales@freqdev.com

 
Phone: (815) 434-7800
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