828BR [FREQUENCYDEVICES]
8 Bit Programmable 4-Pole Pair Filters; 8位可编程四极对过滤器
| 型号： | 828BR |
| 厂家： | 
FREQUENCY DEVICES, INC. |
| 描述： | 8 Bit Programmable 4-Pole Pair Filters |
| 文件： | 总8页 (文件大小：474K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
828BP & 828BR Series
8 Bit Programmable
4-Pole Pair Filters
Band Pass and Band Reject
Description:
The 828BP and 828BR Series are 4-pole-pair
digitally programmable band-pass and band-reject
(notch) active filters. These new filters take
advantage of the company’s proprietary designs
using surface-mount technology to provide a low
profile, compact package in minimal board space.
828BP and 828BR filters are factory tuned to one of
three factory set tuning ranges or 8-bit custom
ranges from 1 Hz to 25.6 kHz. Each filter type
features
a
near theoretical amplitude/phase
response along with low output voltage noise
enabling these filters to achieve a 10,000:1 or better
dynamic signal range
Pretuned to within 2ꢀ of the center frequency,
band-pass 828BP filters pass all frequencies lying
between the upper and lower -3 dB points of the
amplitude response curve, while 828BR band-reject
(notch) filters sharply attenuate those frequencies
that are bound and defined by the bottom of the
notch. Available Q’s for 828BP models are 1, 2, 5, or
10 and 828BR filters are 3 or 10.
Features/Benefits:
• Compact 2.0"L x 2.0"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 center frequencies to meet a wide
range of applications.
Programmable Specifications: . . . . . . . . . . . .Page
Digital Tuning & Control . . . . . . . . . . . . . . . . . . . . .2
Available Band-Pass Models:
828BP4
4 pole pair . . . . . . . . . . . . . . . . . . .3
Available Band-Reject Models:
Applications
828BR4
4-pole pair . . . . . . . . . . . . . . . . . . .3
• Power line interference rejection
• Transducer output filtering
• Production test instrumentation
• Medical electronics equipment and research
• Comb filtering and equalization
• Noise and harmonic analysis
• RMS measurements
General Specifications:
Ordering Information . . . . . . . . . . . . . . . . . . . . . . .4
Pin-Out/package data . . . . . . . . . . . . . . . . . . . . . .4
• Frequency spectrum analysis
1
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
828BP & 828BR Series
Digital Tuning &
Control Characteristics
Pin-Out Key
8-Bit Programmable Filters
Digital Tuning Characteristics
IN
Analog Input Signal
D7 Tuning Bit 7 (MSB)
D6 Tuning Bit 6
The digital tuning interface circuits are a parallel set of eight
(8) 4053 CMOS switches which accept CMOS compatible
inputs for the eight tuning bits (D0 - D7).
OUT Analog Output Signal
GND Power and Signal Return
+Vs Supply Voltage, Positive
-Vs Supply Voltage, Negative
D5 Tuning Bit 5
D4 Tuning Bit 4
Filter tuning follows the tuning equation given below:
D3 Tuning Bit 3
fc = ( fmax/256 ) [ 1 + D7 x 27 + D6 x 26 + D5 x 25 + D4 x 24 +
D3 x 23 + D2 x 22 + D1 x 21 + D0 x 20 ]
Os
Offset Adjustment
D2 Tuning Bit 2
D1 Tuning Bit 1
D0 Tuning Bit 0 (LSB)
where D1 - D7 = "0" or "1", and
OUT +Vs
-Vs
fmax = Maximum tuning frequency;
fc = corner frequency;
D7
Minimum tunable frequency = fmax/256 (D0 thru D7 = 0);
D6
Minimum frequency step (Resolution) = fmax/256
D5
D4
GND
D3
D2
D1
D0
2.00
Data Input Specifications
Input Data Levels
(CMOS Logic)
Input Voltage (Vs = 15 Vdc)
Low Level In
High Level In
0 Vdc min.
11 Vdc min.
4 Vdc max.
15 Vdc max.
IN Os4
Input Current
High Level In
Low Level In
- 10 -5 µA typ.
+10 -5 µA typ.
-1 µA max..
+1 µA max.
Bottom View
Input Capacitance
Input Data Format
Positive Logic
5 pF typ
7.5 pF max.
MSB ---
---
---
---
---
---
LSB
Bit
Frequency Select Bits
Weight
27
26
25
24
23
22
21
20
fc
Logic "1" = +Vs
Logic "0" = Gnd
Corner
Frequency
D7
0
0
0
0
0
0
0
0
1
D6
D5
D4
D3
D2
D1
D0
Bit Weighting
D0
D7
(Binary-Coded)
LSB (least significant bit)
MSB (most significant bit)
0
0
0
0
0
0
0
1
1
0
0
0
0
0
0
1
1
1
0
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
1
0
0
0
1
1
1
1
1
1
0
0
1
1
1
1
1
1
1
0
1
1
1
1
1
1
1
1
fmax/256
fmax/128
fmax/64
fmax/32
fmax/16
fmax/8
Frequency Range
256 : 1, Binary Weighted
fmax/4
fmax/2
fmax
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
828BP & 828BR Series
8-Bit Programmable
4-Pole Pair Filters
Band-Pass & Band-Reject
Model
828BP4
Model
828BR4
Product Specifications
Band-Pass
Product Specifications
Band-Reject
Size
2.0" x 2.0" x 0.5"
1 Hz to 25.6 kHz
1, 2, 5, 10
Size
2.0" x 2.0" x 0.5"
1 Hz to 25.6 kHz
3, 10
Range f
o
Range f
o
1
1
Available "Q’s"
Available "Q’s"
Q Accuracy
10ꢀ
Q Accuracy
10ꢀ
Theoretical Transfer
Characteristics
Appendix A
Pages 41 & 42
Theoretical Transfer
Characteristics
Appendix A
Pages 43
Notch Attenuation
45 db typ.
Pass-Band Gain
(non-inverting)
0 0.25 dB typ.
0 0.50 dB max.
Pass-Band Gain
(non-inverting)
0 0.25 dB typ.
0 0.50 dB max.
Attenuation Rate
Center Frequency
Stability
24 dB/octave
Attenuation Rate
2ꢀ max. Center Frequency
Stability
24 dB/octave
f
f
2ꢀ max.
o
o
0.01ꢀ/ꢁC
FMA-02A
0.01ꢀ/ꢁC
FMA-02A
Filter Mounting
Assembly
Filter Mounting
Assembly
1. Q – Quality Factor for band-pass and band-reject filters. Q = fO/(fH-fL)
fO = √f
HfL
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
828BP & 828BR Series
Pin-Out and Package Data
Ordering Information
Specification
(25ꢁC and Vs 15Vdc)
1
Analog Input Characteristics
Pin-Out & Package Data
Impedance
10 k Ω min.
10 Vpeak
Vs
2.00
Voltage Range
G-3
Max. Safe Voltage
0.5
Analog Output Characteristics
Impedance (Closed Loop)
11 Ω typ.
10 Ω max.
10V
0.15 min.
Side View
0.025 Dia.
Linear Operating Range
Maximum Current2
Offset Voltage3
2 mA
All dimensions are in inches
All Case Dimensions 0.02"
Grid Dimensions 0.1" x 0.1"
22 mV typ.
20 mV max.
50 µV/ꢁC
OUT +Vs
-Vs
Offset Temp. Coeff.
Power Supply ( V)
Rated Voltage
D7
15 Vdc
D6
Operating Range
Maximum Safe Voltage
12 to 18 Vdc
18 Vdc
D5
D4
GND
D3
D2
D1
D0
2.00
Quiescent Current
25 mA typ.
40 mA max.
Temperature
Operating
Storage
-20 to +70ꢁC
-25 to +85ꢁC
IN Os4
Notes:
Bottom View
1. Input and output signal voltage referenced to supply common.
2. Output is short circuit protected to common.
DO NOT CONNECT TO Vs.
Filter Mounting Assembly-See FMA-02A
3. Adjustable to zero.
4. Units operate with or without offset pin connected.
Ordering Information
Filter Type
DC Offset Adjustment
BP - Band Pass
BR - Band Reject
Vs
Do not connect
if trim is not
required.
828BP4/10-4
“Q”
20 k Ω
(Cermet)
BP - 1, 2, 5, 10
BR - 3, 10
OS
Model
Model
Tuning
Minimum
Step(Hz)
Number
Range (Hz)
Case
G-3
G-3
- Vs
2
3
4
1.0 to 256
10 to 2560
100 to 25.6k
1.0
10
100
G-3
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.
PR-828BP/BR-03
4
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
Product Handling
Procedure
Programmable Filter Modules Power Sequence & ESD
November 2000
Programmable Filters Modules
818, 824, 828, 828BP, 828BR, 854, 858, R854, R858
I. Scope
The following precautions are necessary when handling and installing Frequency Devices
programmable filter modules.
II. Digital Circuit Description
The digital input pins connect directly to 4000 series CMOS logic, such as the 4053 analog switch. The
power supply (Vss) for the digital logic on the module comes directly from the +15 Volt pin on the
module. This sets the threshold voltage at 11.0 V minimum to 15.0 V maximum for a "1" (High) level
and 0.0 V minimum to 4.0 V maximum for a "0" (Low) level. Applying a voltage between 4.0 and 11.0
V will produce unpredictable operation. Connecting 5 Volt or 3.3 V logic devices directly to the filter
module without using a voltage translator will result in erratic operation of the filter.
III. (VERY IMPORTANT) Power-Up and Power-Down Sequence
Do not plug-in or un-plug module while power is applied. It is imperative that power is
supplied to the + 15 V pin on the filter module before or at the same instance that any digital pin is
pulled High (> 0.0 V). Failure to do this will result in excessive current flowing through the digital input
pin and through a protection diode internal to the 4000 logic, which will result in damage to the module.
The proper power-up and power-down sequence is:
1. Connect filter module ground.
2. Connect filter module +15 V.
3. Connect filter module -15 V.
4. Connect the input signal.
All four of the above steps can also occur simultaneously. Power-down should occur in the reverse
order.
IV. ESD Issues
Like most modern electronic equipment, the modules can be damaged by electrostatic discharge (ESD).
The modules are shipped from the factory in sealed, anti-static packaging and should be kept in the
sealed package prior to mounting on a circuit board. The following additional rules should also be
observed when handling the modules after they are removed from the factory packaging:
1. Only a person wearing a properly grounded wrist strap should handle the modules.
2. Any work surface that the modules are placed on must be properly ESD grounded.
3. Any insulating materials capable of generating static charge (such as paper) should be kept
away from the modules.
Static generating clothing should be covered with an ESD-protective smock.
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
Band-Pass
4-Pole Pair
Appendix A
Amplitude Response Curves
0
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
Q1
Q1
-1
Q2
Q2
-2
Q5
-3
Q5
-4
-5
Q10
Q10
0.6
0.7
0.8
0.9
1.1
1.2
1.3
1.4 1.5 1.6
2
3
4
5
6
7
8
2
3
4
5
6
7 8
1.0
0.1
1.0
10.0
Normalized Frequency (f/fo)
Normalized Frequency (f/fo)
Normalized Theoretical Amplitude Data
Q = 1
Q = 2
Q = 5
Q = 10
Amp
(dB)
fL < fO < fH
fL < fO < fH
fL < fO < fH
fL < fO < fH
f / f o
f / f o
f / f o
f / f o
f / f o
f / f o
f / f o
f / f o
-0.10
-0.25
0.735
0.709
0.687
0.663
0.648
0.636
0.627
0.618
0.591
0.539
0.493
0.449
0.407
0.365
0.326
0.290
0.256
0.225
0.197
0.173
0.151
0.131
0.114
0.099
1.360
1.411
1.456
1.508
1.543
1.571
1.596
1.618
1.692
1.855
2.027
2.225
2.459
2.737
3.065
3.452
3.908
4.442
5.067
5.796
6.644
7.630
8.774
10.01
0.856
0.840
0.826
0.811
0.801
0.793
0.787
0.781
0.762
0.724
0.688
0.650
0.611
0.570
0.527
0.484
0.441
0.399
0.358
0.319
0.283
0.250
0.220
0.193
1.168
1.191
1.211
1.233
1.249
1.261
1.271
1.281
1.313
1.382
1.454
1.538
1.637
1.755
1.896
2.065
2.267
2.507
2.793
3.131
3.530
4.000
4.550
5.193
0.939
0.932
0.926
0.919
0.914
0.911
0.908
0.905
0.896
0.877
0.858
0.838
0.816
0.791
0.763
0.733
0.699
0.664
0.625
0.585
0.543
0.500
0.457
0.414
1.064
1.073
1.080
1.088
1.094
1.098
1.102
1.105
1.116
1.140
1.165
1.193
1.226
1.265
1.311
1.365
1.430
1.507
1.599
1.710
1.842
2.000
2.189
2.414
0.969
0.965
0.962
0.959
0.956
0.954
0.953
0.951
0.946
0.936
0.926
0.915
0.903
0.888
0.872
0.854
0.834
0.811
0.786
0.758
0.727
0.693
0.657
0.618
1.032
1.036
1.039
1.043
1.046
1.048
1.050
1.051
1.057
1.068
1.080
1.093
1.108
1.126
1.146
1.171
1.199
1.233
1.273
1.320
1.376
1.443
1.523
1.618
-0.50
-1.00
-1.50
-2.00
-2.50
-3.00
-5.00
-10.00
-15.00
-20.00
-25.00
-30.00
-35.00
-40.00
-45.00
-50.00
-55.00
-60.00
-65.00
-70.00
-75.00
-80.00
6
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
Band-Pass
4-Pole Pair
Appendix A
Phase Response Curves
360
270
180
90
360
270
180
90
Q10
0
0
Q1
Q2
Q1
-90
-90
Q2
-180
-270
-360
-180
-270
-360
Q5
Q5
Q10
0.6
0.7
0.8 0.9
1.01.1 1.2 1.3 1.4 1.5 1.6
Normalized Frequency (f/fo)
2
3
4 5 6 78
2
3
0.1
1.0
4 5 6 78 10.0
Normalized Frequency (f/fo)
Normalized Theoretical Phase Data
Phase
Mag
(deg)
Q = 1
(+) (-)
f /f f /f
Q = 2
(+) (-)
f /f f /f
Q = 5
(+) (-)
f /f f /f
Q = 10
(+) (-)
f /f f /f
o
o
o
o
o
o
o
o
1.0 0.997 1.003 0.998 1.002 0.999 1.001 1.000 1.000
2.5 0.992 1.008 0.996 1.004 0.998 1.002 0.999 1.001
5.0 0.983 1.017 0.992 1.008 0.997 1.003 0.998 1.002
10.0 0.967 1.034 0.983 1.017 0.993 1.007 0.997 1.003
15.0 0.951 1.051 0.975 1.025 0.990 1.010 0.995 1.005
20.0 0.936 1.069 0.967 1.034 0.987 1.013 0.993 1.007
25.0 0.920 1.087 0.959 1.042 0.984 1.017 0.992 1.008
30.0 0.905 1.105 0.951 1.051 0.980 1.020 0.990 1.010
35.0 0.891 1.123 0.944 1.060 0.977 1.023 0.988 1.012
40.0 0.876 1.141 0.936 1.068 0.974 1.027 0.987 1.013
45.0 0.863 1.159 0.929 1.077 0.971 1.030 0.985 1.015
50.0 0.849 1.178 0.921 1.086 0.968 1.033 0.984 1.017
60.0 0.823 1.215 0.907 1.103 0.962 1.040 0.981 1.020
70.0 0.799 1.252 0.893 1.120 0.956 1.046 0.978 1.023
80.0 0.776 1.288 0.880 1.136 0.950 1.052 0.975 1.026
90.0 0.755 1.324 0.868 1.152 0.945 1.058 0.972 1.029
120.0 0.701 1.426 0.835 1.198 0.930 1.075 0.964 1.037
150.0 0.657 1.521 0.807 1.239 0.917 1.090 0.958 1.044
180.0 0.618 1.618 0.781 1.281 0.905 1.105 0.951 1.051
210.0 0.577 1.734 0.752 1.330 0.891 1.122 0.944 1.060
240.0 0.525 1.904 0.713 1.403 0.872 1.147 0.933 1.071
270.0 0.452 2.210 0.653 1.532 0.840 1.191 0.916 1.092
300.0 0.345 2.899 0.548 1.825 0.777 1.288 0.880 1.136
330.0 0.192 5.211 0.350 2.859 0.617 1.621 0.780 1.282
7
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
Band-Reject
4-Pole Pair
Appendix A
Amplitude Response Curves
Q10
Phase Response Curves
360
270
180
90
0
Q3
-10
-20
-30
-40
-50
-60
-70
Q3
0
Q10
-90
-180
-270
-360
1
2
3
2
3
.8
0.1
4 5 6 7 8 1.0
4 5 6 7 810.0
.9
1.1
1.2
Normalized Frequency (f/fo)
Normalized Frequency (f/fo)
Normalized Theoretical Amplitude Data
Normalized Theoretical Phase Data
Q = 3
Q = 10
Phase
Mag
(deg)
Q = 3
(-) (+)
f /f f /f
Q = 10
(-) (+)
f /f f /f
o
Amp
(dB)
f <f <f
f <f <f
L O H
f /f f /f
L O H
f /f f /f
O
O
O
O
o
o
o
-0.10 0.799 1.251 0.935 1.069
-0.25 0.809 1.236 0.938 1.066
-0.50 0.818 1.223 0.941 1.062
-1.00 0.828 1.208 0.945 1.059
-1.50 0.835 1.198 0.947 1.056
-2.00 0.839 1.191 0.949 1.054
-2.50 0.844 1.185 0.95 1.053
-3.00 0.847 1.180 0.951 1.051
-5.00 0.858 1.165 0.955 1.047
-10.00 0.877 1.140 0.961 1.040
-15.00 0.892 1.121 0.966 1.035
-20.00 0.905 1.105 0.97 1.030
-25.00 0.916 1.092 0.974 1.027
-30.00 0.925 1.081 0.977 1.024
-35.00 0.933 1.072 0.979 1.021
-40.00 0.939 1.065 0.982 1.019
-45.00 0.945 1.059 0.983 1.017
-50.00 0.949 1.054 0.984 1.016
-55.00 0.952 1.050 0.985 1.015
-60.00 0.954 1.048 0.986 1.014
1.0 0.020 49.66 0.067 14.88
2.5 0.050 19.91 0.164 6.087
5.0 0.100 10.03 0.306 3.268
10.0 0.194 5.160 0.504 1.985
15.0 0.279 3.590 0.621 1.609
20.0 0.352 2.838 0.696 1.437
25.0 0.416 2.405 0.746 1.340
30.0 0.470 2.129 0.783 1.278
35.0 0.515 1.940 0.810 1.235
40.0 0.555 1.803 0.831 1.204
45.0 0.588 1.700 0.848 1.180
50.0 0.617 1.620 0.861 1.161
60.0 0.664 1.505 0.882 1.133
70.0 0.701 1.427 0.897 1.115
80.0 0.729 1.372 0.909 1.101
90.0 0.752 1.330 0.917 1.090
120.0 0.797 1.255 0.934 1.071
150.0 0.824 1.214 0.943 1.060
180.0 0.844 1.185 0.950 1.052
210.0 0.862 1.160 0.957 1.045
8
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
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