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818H8B-4中文资料

1 kHz to 1.28 MHz 8-Bit Programmable

2" x 4"

8-Pole Filters

Description

The 818 Series are digitally programmable low-pass and high-pass active filters that are tunable over a 256:1 frequency range.818 filters are available with any one of five standard factory-set tuning ranges or 8-bit custom ranges from 1 kHz to 1.28 MHz.These units contain 8 CMOS logic inputs.

818 Series models are convenient, low profile, easy to use fully finished filters which require no external components or adjustments.They feature low harmonic distortion, and near theoretical amplitude characteristics.818 filters operate from non-critical ±12 to ±18 Vdc power supplies, have a 5 k ?(min.)input impedance, a 10?(max.) output impedance and low-pass models offer dc voltage offset adjustment.Features/Benefits:

?Low harmonic distortion and wide signal-to-noise ratio to 12-bit resolution

?Digitally programmable corner frequency allows selecting cut-off frequencies specific to each application

?Plug-in ready-to-use, reducing engineering design and manufacturing cycle time

?Factory-set tuning range, no external clocks or adjustments needed

?Broad range of transfer characteristics and corner frequencies to meet a wide range of applications Applications

?Anti-alias and band-pass filtering ?Data acquisition systems ?Satellite and telecommunications

?Acoustic and vibration analysis and control ?Aerospace, navigation and sonar

?Medical research and electronic equipment ?Engine test and simulation ?Noise elimination ?Video systems ?Signal reconstruction

Programmable Specifications Page Digital T uning & Control . . . . . . . . . . . . . . . . . . . . . . 2Available Low-Pass Models:Page 818L8B 8-pole Butterworth . . . . . . . . . . . . . . . . . . 3818L8L 8-pole Bessel . . . . . . . . . . . . . . . . . . . . . . 3818L8E 8-pole, 6-zero elliptic, 1.77. . . . . . . . . . . . 3818L8D808-pole, 6-zero constant delay . . . . . . . . . . 3

Available High-Pass Models:Page 818H8B 8-pole Butterworth . . . . . . . . . . . . . . . . . . 4818H8E 8-pole, 6-zero elliptic, 1.77. . . . . . . . . . . . 4General Specifications:

Phase and phase match considerations . . . . . . . 5 & 6Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . 7Pin-out/package data. . . . . . . . . . . . . . . . . . . . . . . . . 7

8-Bit Programmable Filters

Digital Tuning & Control Characteristics

Notes:

1.Frequency data must be present before occurrence of strobe edge.

8-Pole

8-Pole

Phase and Phases 1 kHz to 1.28 MHz

10

-10

-20

-30

-40

-50

-60

-70

-80

d e g r e e s "°"

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

f/fc

5k H z 10k H z 20k H z

40kHz 80kHz 160kHz

320kHz

640kHz

1.28MHz

Phase Deviation from Theoretical

Specification

(25°C and Vs ±15 Vdc)

Pin-Out and Package Data

Ordering Information

Analog Input Characteristics 1Impedance 5 k ?min.Voltage Range ±10 Vpeak Max.Safe Voltage

±Vs Analog Output Characteristics Impedance (Closed Loop) 1 ?typ.10 ?max.Linear Operating Range ±10V Maximum Current 2±5 mA Offset Voltage 3

2 mV typ.10 mV max.Offset Temp.Coeff.50 μV/°C

Power Supply (±V s )Rated Voltage ±15 Vdc

Operating Range

±12 to ±18 Vdc Maximum Safe Voltage ±18 Vdc

Quiescent Current 100 mA typ.120 mA max.Temperature Operating 0 to +70°C Storage

-25 to +85°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.

Pin-Out & Package Data

Ordering Information

8-Pole

Bessel

Appendix A

Low-Pass

Normalized Time (1/f sec)

S t e p R e s p o n s e (V /V )

Step Response

12345

-0.2

-0.00.20.40.60.81.01.2Normalized Time (1/f sec)

D e l a y (s e c )

Delay (Normalized)0.1

1.0

Normalized Frequency(f/fc)

A m p (d

B )

Frequency Response 0.1

1.010.0

2

345678

234567-100

-80-60-40-200(sec)Theoretical Transfer Characteristics

1

0.00 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.85 0.90 0.95 1.00 1.10 1.20 1.30 1.40 1.50 1.60 1.70 1.801.90 2.00 2.25 2.50 2.75 3.00 3.25 3.50 4.00 5.006.00 7.00 8.00 9.00 10.01.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).Normalized Delay

f/fc (Hz)Amp (dB)Phase (deg)Delay -79.2 -89.8 -99.0 -107 -114-33.4 -38.3 -43.1 -51.8 -66.8 -12.1 -13.7 -18.1 -23.1 -28.3 -6.10 -7.08 -8.16

-9.36 -10.7 -2.71 -3.01-3.67 -4.40 -5.20 -1.06 -1.45 -1.91 -2.16 -2.42 0.00 -0.029 -0.117 -0.264 -0.470 -0.737 -610 -626 -638 -647 -655-489 -509 -526 -552 -587 -345 -362 -402 -436 -465 -255 -273 -291 -309 -327 -173 -182 -200 -219 -237 -109 -128 -146 -155 -164 0.00 -18.2 -36.4 -54.7 -72.9 -91.1.052 .038 .029 .023 .018

.241 .201 .170 .126 .077 .482 .468 .417 .352 .291 .505 .504 .502 .498 .492 .506 .506

.506 .506 .506

.506 .506 .506 .506 .506 .506 .506 .506 .506 .506 .506

Low-Pass

8-Pole

Appendix A

Butterworth

0.1

1.0

10.0

2

3456782

34567

Normalized Frequency(f/fc)

-100

-80-60-40-200A m p (d B )

0.1

1.0234

56789Normalized Time (1/f sec)

D e l a y (s e c )

1.5

0.150

12345

Normalized Time (1/f sec)

-0.0

0.20.40.60.81.01.2S t e p R e s p o n s e (V /V )

Frequency Response Delay (Normalized)Step Response

(sec)Theoretical Transfer Characteristics

1

0.00 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.85 0.90 0.95 1.00 1.10 1.20 1.30 1.40 1.50 1.60 1.70 1.801.90 2.00 2.25 2.50 2.75 3.00 3.25 3.50 4.00 5.006.00 7.00 8.00 9.00 10.01.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).Normalized Delay

f/fc (Hz)Amp (dB)Phase (deg)Delay -125 -135 -144 -153 -160-76.3 -81.9 -87.1 -96.3 -112 -44.6 -48.2 -56.3 -63.7 -70.3 -23.4 -28.2 -32.7 -36.9 -40.8 -1.58 -3.01 -7.48 -12.9 -18.2 -671 -678 -683 -687 -691-621 -629 -635 -646 -661-560 -568 -586 -600 -611-494 -511 -526 -539 -550 -0.001 -0.014 -0.121 -0.311 -0.7380.00 0.00 0.00 0.00 0.00 0.00 -333 -360 -408 -445 -472 -185 -221 -261 -283 -307 0.00 -29.4 -59.0

-89.1

-120

-152

.023 .017 .013 .010 .008

.094 .080 .069 .052 .033.253 .226 .174 .139 .113 .540 .448 .380 .328 .2871.48 1.46 1.17 .873 .672 .956 1.04 1.19 1.29 1.40 .816

.819 .828 .843 .867 .903

Constant Delay

Appendix A

Low-Pass (80 dB)

Normalized Frequency(f/fc)

A m p (d

B )

Normalized Time (1/f sec)

D e l a y (s e c )

Normalized Time (1/f sec)

S t e p R e s p o n s e (V /V )

Frequency Response Delay (Normalized)Step Response

0.1

1.010.0

2

345678

234567-100-80-60-40-2000.1

1.0

1

2345

-0.2

-0.00.20.40.60.81.01.21.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).Normalized Delay

1.40

1.60

1.80

2.00

2.25

0.90

0.95

1.00

1.10

1.20

0.50 0.60 0.70 0.80 0.850.00

0.10

0.20

0.30

0.40

(sec)

Theoretical Transfer Characteristics

1

f/fc (Hz)Amp (dB)Phase (deg)Delay 6.50

7.00

8.00

9.00

10.0

5.00 5.25 5.50 5.75

6.00 3.75 4.00 4.25 4.50 4.752.50 2.75 3.00 3.25 3.50-86.6 -85.1 -84.1 -84.3 -84.9-92.8 -104 -101 -93.3 -89.9 -98.3 -86.3 -84.1 -85.1 -8

7.9-43.4 -50.3 -57.6 -62.5 -75.4-11.3 -17.1 -23.2 -29.1 -36.3-1.89 -2.41 -3.01 -4.50

-6.39 0.034 -0.157 -0.510 -1.07 -1.44 0.00 0.017 0.058 0.099 0.105-300 -305 -312 -317 -321-462 -466 -289 -293 -295-616 -442 -448 -454 -458-561 -576 -589 -599 -608 -417 -459 -492 -517 -542 -276 -291 -306 -336 -365 -153 -184 -215 -245 -261 0.00 -30.7 -61.3 -92.0 -123 .026 .022 .017 .013 .011.044 .040 .036 .033 .030

.079 .069 .061 .054 .049 .189 .153 .127 .107 .092.656 .512 .396 .312 .239 .849 .846 .841 .821 .783 .852 .852 .852 .851 .850 .852 .852 .852 .852 .852

Elliptic, 1.77

Appendix A

Low-Pass

Normalized Frequency(f/fc)

A m p (d

B )Normalized Time (1/f sec)

D e l a y (s e c )

Normalized Time (1/f sec)

S t e p R e s p o n s e (V /V )

Frequency Response

Delay (Normalized)Step Response

0.1

1.0

0.1

1.010.0

2

345678

234567-100

-80-60-40-2000

1

2345

-0.0

0.20.40.60.81.01.21.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).Normalized Delay

(sec)Theoretical Transfer Characteristics 1f/fc (Hz)Amp (dB)Phase (deg)Delay 4.00 5.00 6.00 7.002.40 2.60 2.80 3.00 3.50 1.85 1.90 1.95 2.00 2.20 1.50 1.60 1.70 1.75 1.80 1.00 1.10 1.20 1.30 1.40 0.75 0.80 0.85 0.90 0.95 0.50 0.55 0.60 0.65 0.70 8.00 9.00 10.00.00 0.10 0.20 0.30 0.40 -86.2 -87.8 -89.3 -83.1 -82.1 -83.1 -84.6-82.0 -83.5 -88.2 -99.9 -87.2-83.6 -82.0 -83.7 -87.8 -85.8-40.1 -51.5 -65.2 -75.0 -113.0 -0.035 -1.76 -8.28 -18.4 -29.3-0.015 -0.041 -0.046 -0.016 -0.025 0.0070.022 0.033

0.031 0.014 0.00 -0.004 -0.014 -0.024 -0.020-160 -163 -164-140 -148 -154 -157 -289 -295 -301 -305 -134 -440 -444 -447 -450 -280 -578 -594 -606 -611 -616-323 -392 -467 -522 -558-213

-232 -251 -272 -296 -133-148 -163 -179 -196 0.00

-25.7

-51.6

-77.9

-105

0.007 0.005 0.004

0.030 0.018 0.013 0.009 0.099 0.081 0.067 0.057 0.040 0.217 0.198 0.182 0.168 0.126 0.517 0.381 0.296 0.265 0.239 1.65 2.14 1.86 1.19 0.753 0.989 1.04 1.12 1.23 1.40 0.811 0.840 0.872 0.908 0.946

0.713 0.716 0.724 0.740 0.767

High-Pass

8-Pole

Appendix A

Butterworth

0.1

1.010.0

2

345678

234567Normalized Frequency(f/fc)

-100

-80-60-40-200A m p (d B )

Frequency Response (sec)Theoretical Transfer Characteristics

1

0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.85 0.90 0.95 1.00 1.20 1.40 1.60 1.80 2.00 2.50

3.00

4.00

5.00

6.00

7.00

8.00

9.00

10.0 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).Normalized Delay

f/fc (Hz)Amp (dB)Phase (deg)Delay 0.00 0.00

0.000.000.000.000.000.00 0.000.00 0.00-5.15 -3.01 -0.229 -0.020-0.00259.049.0 42.1

36.8 32.7 29.4-35.5 -24.8

-15.6 -11.6 -8.06-160 -112 -83.7 -63.7 -48.2386360 275226 194 170152 12099.2 74.0 535

499 459 437413691 661 631

600

568

0.033

0.023 0.017 0.013 0.010 0.008

0.287 0.2260.139 0.0940.0521.48

1.46 0.873 0.540

0.380

.956 1.04 1.19 1.29 1.40

0.819

0.828 0.843 0.867 0.903

8-Pole, 6-Zero

Elliptic, 1.77

Appendix A

High-Pass

Normalized Frequency(f/fc)

A m p (d

B )Frequency Response

0.1

1.0

10.0

2

3456782

34567

-100

-80-60-40-2001.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).Normalized Delay

(sec)Theoretical Transfer Characteristics 1f/fc (Hz)Amp (dB)Phase (deg)Delay 9.00 10.0 4.00 5.00 6.00 7.00 8.00 1.80 1.90 2.00 2.50 3.00 1.30 1.40 1.50 1.60 1.70 0.90 0.95 1.00 1.10 1.20 0.55 0.60 0.70 0.80 0.85 0.10 0.20 0.30 0.40 0.50

-0.01 0.00 -0.02 -0.01 -0.01-0.01 -0.01 0.02 0.01 0.01 -0.02 -0.02 -0.03 0.01 0.03 0.03 0.03-2.21 -0.51 -0.03 -0.01 -0.05 -90.0-60.2-32.4 -13.1 -6.28-89.3 -82.1 -90.6 -82.4

-87.828.6 25.7 64.7

51.6 42.9 36.8 32.1

150 141 133 105 86.9221 201 185 172 160401358324277225437603563498451

164

148

131

2924500.009 0.007

0.046 0.029 0.020

0.015 0.011 0.260 0.229 0.203 0.123 0.083 0.596 0.486 0.409 0.347 0.2992.66

2.15 1.64 1.04 0.757

0.761

0.890 1.37 2.35 2.77 0.440 0.459 0.495 0.559 0.671

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