ETC 5BAF-LPBE6

5BAF Series
Differential
Low-Pass Filters
6-Pole
Description
The 5BAF Series are differential-input 6-Pole
Butterworth or Bessel low-pass anti-alias filters that
are pin-out and package compatible with industrystandard 5B Series signal conditioning modules.
Each filter comes factory tuned to a user-specified
corner frequency from 1 Hz to 50 kHz. These filters
are ideally suited to sharply limit A/D converter
bandwidth to eliminate aliasing higher frequency
input signals and noise.
To serve real-world applications, all 5BAF Series
filters are configured with a differential input having a
common mode rejection ratio of 74 dB (min.) at 1
kHz. A self contained dc-to-dc converter enables the
5BAF filters to operate from a non-critical +5 ±10%
volt power source key in many systems since +5V
logic power is readily available.
Features/Benefits:
• The 10 volt input range with an overall gain of 1
provides an excellent match to both the transducer
output and the data acquisition board input
• 5BAF modules allow for partitioning between system segments providing a means to minimize
ground loops
• Factory tuned, no external clocks or adjustments
needed
• 5B plug-in compatible provides quick and easy installation
• Broad range of corner frequencies to meet a wide
range of applications
Available Low-Pass Models: . . . . . . . . . . . . . .Page
5BAF-LPBE6 6-pole Bessel . . . . . . . . . . . . . . . . .2
5BAF-LPBU6 6-pole Butterworth . . . . . . . . . . . . . .2
General Specifications:
Ordering information . . . . . . . . . . . . . . . . . . . . . . . .3
Pin-out/package data . . . . . . . . . . . . . . . . . . . . . . . .3
Applications
• Anti-alias filtering
• Vibration analysis
• Industrial and process control
• Noise reduction
• Signal reduction
• Test systems
1
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
5BAF Series
Differential
Low-Pass Filters
6-Pole
Model
5BAF-LPBE6
5BAF-LPBU6
Transfer Function
6-Pole,
Bessel
6-Pole,
Butterworth
Size
Std. 5B
Std. 5B
Range fc
1 Hz to 50 kHz
1 Hz to 50 kHz
Theoretical Transfer
Characteristics
Appendix A
Page 3
Appendix A
Page 8
Impendance
1.0 MΩ min.
1.0 MΩ min.
Differential Gain
1 ± 0.03%
1 ± 0.03%
Com. Mode
Voltage Range
±20 V
±20 V
Com. Mode Rejection
74 dB min. @ 1 kHz
74 dB min. @ 1 kHz
Voltage Range
± 10 V peak
± 10 V peak
Maximum Safe Voltage
±40 V
±40 V
Accuracy
±2% max.
±2% max.
Stopband
Attenuation Rate
36 dB/octave
36 dB/octave
Product Specifications
(Power ON or OFF)
Filter Attenuation
(theoretical)
Narrow Band Noise
1.89 dB
3.01 dB
60.0 dB
80.0 dB
75 mVrms
0.80 fc
1.00 fc
5.41 fc
7.99 fc
0.29 dB
3.01 dB
60.0 dB
80.0 dB
0.80 fc
1.00 fc
3.16 fc
4.64 fc
75 mVrms
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
5BAF Series
Pin-Out and Package Data
Ordering Information
Specification
Pin Designations
1
Analog Input Characteristics
See transfer function specifications.
NA
1,2
Analog Output Characteristics
Impedance (Closed Loop)
<1 W typ.
10 W max.
Linear Operating Range
±10V pk
Maximum Current
±2.0mA
Offset Voltage
±3mV typ.
Offset Temp. Coeff.
±100 mV/°C
Gain Drift
± 30 ppm/°C
Output Load
See note 3
Power Supply (±Vs)
Rated Voltage
Quiescent Current
(1 kHz to 20 kHz)
Quiescent Current
(20 kHz to 50 kHz)
Vout
20
NA
18
POWER COM
NA
21
NA
19
I/O COM
17
+ 5V
5
INLO
3
NA
1
NA
16
INHI
6
NA
4
NA
23
22
2
Bottom View
Package Data
+ 5V ± 0.5 Vdc
100 mA typ.
125 mA max.
120 mA typ.
135 mA max.
FREQUENCY
DEVICES
5BAF
Filter Series
0.590
(15.0)
2.250
(57.2)
0.350
(8.6)
0.150
(3.8)
0.075
(1.8)
typ
0.375 (9.2)
Temperature
Operating
Storage
FREQUENCY
DEVICES
-25 to + 85°C
-40 to + 85°C
0.525 (12.9)
5BAF - LPBU6
6 Pole Butterworth Filter
20.0 kHz
2.250
(57.2)
Made in the USA
Notes:
1. Input and output signal voltage referenced to
I/O COM.
0.375
(9.5)
2. Output is short circuit protected to common.
DO NOT CONNECT TO +5V or POWER COM.
2.250
(57.2)
0.475 (11.6)
SOCKET
for
0.038 PIN
0.590
(15.0)
0.150 (3.8)
1.605
(41.9)
3. Output can drive a series 1.5 kW resistor and
0.0022 mF capacitor without slew rate limiting
with a ± 10 V square wave input.
INSERT
for
3mm
SCREW
0.375 (9.5)
0.100 (2.5)
1.175
(29.8)
0.275 (6.7)
0.250 (6.3)
Dimensions in inches (mm)
Ordering Information
0.0022 mF
5BAF-LPBE6-10.7 kHz
1.5 k W
Transfer Function
BU - Butterworth
BE - Bessel
4.
4
- 3 dB Corner Frequency
e.g., 10.7 kHz
1.00 Hz
50.0 kHz
How to specify Corner Frequencies:
Corner frequencies are specified by attaching a three digit frequency designator to
the basic model number. Corner frequencies can range from 1 Hz to 50 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-005BAF-02
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
Low-Pass
6-Pole
Appendix A
Bessel
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
Frequency Response
Amp (dB)
0
-40
-60
-80
-100
0.1
2 3 4 56781.0
2 3 4 567 10.0
Normalized Frequency(f/fc)
Delay (Normalized)
Delay (sec)
1.0
0.5
0.0
3 4 5 6 7 8 91.0 1.5
0.1 0.15 2
Normalized Time (1/f sec)
Step Response (V/V)
Step Response
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 =
-20
1.2
1.0
0.8
0.6
0.4
0.2
-0.0
-0.2
0
1
2
3
4
Normalized Time (1/f sec)
Normalized Delay
Actual Corner Frequency (fc) in Hz
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 ∑Fax on Demand: 978/521-5178
5
Low-Pass
6-Pole
Appendix A
Butterworth
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
Frequency Response
Amp (dB)
0
-40
-60
-80
-100
0.1
2
3 4 5 6 78
1.0 2 3 4 5 6 7 10.0
Normalized Frequency(f/fc)
Delay (Normalized)
Delay (sec)
2.0
1.0
0.0
0.1
0.15 2
3
4
5 6 7 89
1.0
1.5
Normalized Time (1/f sec)
Step Response (V/V)
Step Response
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 =
-20
1.2
1.0
0.8
0.6
0.4
0.2
-0.0
0
1
2
3
4
Normalized Time (1/f sec)
Normalized Delay
Actual Corner Frequency (fc) in Hz
8
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
5