linear active filtering in a compact package, with a
broad range of corner frequencies and a choice
of Butterworth or Bessel transfer functions. These
filters are designed to work with up to 16 Bit A/D
converters. 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 400
kHz* and operate with low total harmonic
distortion over a wide dynamic input voltage
range from non-critical single +5VDC to +18VDC
power supply. Each filter has a built in internal
+6VDC and -6VDC power supplies to power the
filter.
Features/Benefits:
•
Low harmonic distortion and wide signal–
to–noise ratio to 16 bit resolution.
•
Available with Single or Differential inputs.
•
Available with DC coupled or AC coupled
inputs. (The AC corner frequency is a
single pole at 2 Hz.)
•
Compact 1.5"L x 2.0"W x 0.4"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.
•
Available in Butterworth or Bessel transfer
functions to meet a wide range of
applications.
•
Requires a single +5V to +18V power
supply to operate (The module generates
± 6 VDC internally to operate the filter).
•
One to one offset input that works with
your A/Ds reference output to set the
output of the filter in the center of your
A/Ds input range.
•
Available with built in gains from 0 dB to
60 dB.
* Bessel 1 Hz to 200 Khz
1
6 - Pole Single Power Supply
Anti-Aliasing Low-Pass 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
Available Low-Pass Models:
D96L6B
6-Pole Butterworth
D96L6L
6-Pole Bessel
1784 Chessie Lane, Ottawa, Illinois 61350
•
Tel:800/252-7074, 815/434-7800
•
FAX:815/434-8176
e-mail: sales@freqdev.com
•
Web Address: http://www.freqdev.com
D96 Series
1 Hz to 400 kHz*
Low Noise Fixed Frequency
Transfer Function
Size
Range f
c
Theoretical Transfer
Characteristics
Passband Ripple
(
theoretical)
DC Voltage Gain
(non-inverting)
6 - Pole Single Power Supply
Anti-Aliasing Low-Pass Filters
D96L6L
6-Pole Bessel
1.5” x 2.0” x 0.4”
1.0 Hz to 200 kHz
Appendix A
Page 3
0.0 dB
0
±
0.1 dB max.
0
±
0.05 dB typ.
D96L6B
6-Pole Butterworth
1.5” x 2.0” x 0.4”
1.0 Hz to 400 kHz
Appendix A
Page 8
0.0 dB
0
±
0.1 dB max.
0
±
0.05 dB typ.
Stopband
Attenuation Rate
Cutoff Frequency
Stability
Amplitude
Phase
Filter Attenuation
(theoretical)
36 dB/octave
f
c
±
1% max.
±
0.01%/°C
-3 dB
-270°
0.29 dB
3.01 dB
60.0 dB
80.0 dB
0.80 f
c
1.00 f
c
3.16 f
c
4.64 f
c
30 dB/octave
f
c
±
1% max.
±
0.01%/°C
-3 dB
-155°
1.99 dB
3.01 dB
60.0 dB
80.0 dB
0.80 f
c
1.00 f
c
5.42 f
c
7.99 f
c
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 – 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.
(THD) Total Harmonic
Distortion @ 1 kHz
<-100 dB
<-100 dB
Wide Band Noise
(5 Hz – 2 MHz)
< 200 µVrms
<-100 dB
< 200 µVrms
<-100 dB
SINAD
2
1784 Chessie Lane, Ottawa, Illinois 61350
•
Tel:800/252-7074, 815/434-7800
•
FAX:815/434-8176
e-mail: sales@freqdev.com
•
Web Address: http://www.freqdev.com
D96 Series
Specifications
(25ºC and Vs + 5 VDC to + 18 VDC)
Pin-Out and Package Data
Ordering Information
Pin-Out and Package Data
0.1" GRID
2.00”
GND GND
IN-
+V
IN+
Analog Input Characteristics
Impedance
1 MΩ
Voltage Range
±6
V peak
Max. Safe Voltage
±
6V
Analog Output Characteristics
Impedance
1
Ω
typ., 10
Ω
max.
(Closed Loop)
3
±
5V
Linear Operating Range
2
±
5 mA
Maximum Current
3
±
5 VDC
Offset Voltage
1.50”
1
OS
Bottom View
Power Supply (±V)
Rated Voltage
Quiescent Current
Temperature Range
Operating
Storage
+ 5 VDC to + 18 VDC
~110 mA
GND
OUT+
OUT-
0.40”
0ºC to +70ºC
-25ºC to +85ºC
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. Any voltage applied to the offset pin appears at the output and an
output offset. Note that if, for instance, the offset pin is at 2 VDC the
maximum linear operating range will be ± 3V not ± 5 V. This is
because you cannot exceed +5V or -5V linear operating range. Any
voltage applied to the Offset Pin is low pass filtered to remove noise.
4. Units operate with or without offset pin connected.
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 1.00 Hz to 400 kHz.
FRONT VIEW
PINS 0.025" DIAMETER
ORDERING INFORMATION
Transfer Function
B = Butterworth
L = Bessel
Input Type
D = Differential
S = Single
Output Type
D = Differential
S = Single
D96L6BDAS-100 Hz-10dB
Gain
0 to 60dB
Input Coupling
A = AC Coupled Input
D = DC Coupled Input
- 3 dB Corner Frequency
e.g., 100 Hz
10.0 kHz
75.2 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.
3
1784 Chessie Lane, Ottawa, Illinois 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
.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
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