858 Series
0.1 Hz to 102.4 kHz
8-Bit Programmable
Description
2" x 4"
8-Pole Filters
The 858 Series are digitally programmable low pass
and high-pass active filters that are tunable over a
256:1 frequency range. 858 filters are available
with any one of six standard factory-set tuning
ranges up to 102.4 kHz. These units contain 8
CMOS logic inputs that can be operated in a
transparent or latching mode.
All 858 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 phase
and amplitude characteristics. 858 filters operate
from non-critical ± 12 to ± 18 Vdc power supplies,
have a 10 kW (min.) input impedance, a 10
W
(max.)
output impedance and offer dc voltage offset
adjustment.
Features/Benefits:
•
Lower cost, high precision replacement for 848
and 878 series products.
• Low harmonic distortion and wide signal-to-noise
ratio to 16 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 filtering
•
•
•
•
•
•
•
•
Data acquisition systems
Communication systems and electronics
Medical electronics equipment and research
Aerospace, navigation and sonar applications
Sound and vibration testing
Real and compressed time data analysis
Noise elimination
Signal reconstruction
Programmable Specifications:
. . . . . . . . . . . . .
Page
Digital Tuning & Control. . . . . . . . . . . . . . . . . . . . . . 2
Available Low-Pass Models:
. . . . . . . . . . . . . . . . . . .
858L8B
8-pole Butterworth . . . . . . . . . . . . . . . . . 3
858L8E
8-pole, 6 zero elliptic, 1.77 (-80dB) . . . . . 3
858L8EX
8-pole, 6 zero elliptic, 1.56 (-80dB) . . . . . 3
858L8EY
8-pole, 6 zero elliptic, 2.00 (-100dB) . . . . 3
858L8L
8-pole Bessel . . . . . . . . . . . . . . . . . . . . . 4
858L8D60
8-pole constant delay (-60dB). . . . . . . . . 4
858L8D80
8-pole constant delay (-80dB). . . . . . . . . 4
858L8D10
8-pole constant delay (-100dB) . . . . . . . . 4
Available High-Pass Models:
. . . . . . . . . . . . . . . . . .
858H8B
8-pole Butterworth . . . . . . . . . . . . . . . . . . 5
858H8E
8-pole, 6 zero elliptic, 1.77 (-80dB) . . . . . 5
858H8EX
8-pole, 6 zero elliptic, 1.56 (-80dB) . . . . . 5
858H8EY
8-pole, 6 zero elliptic, 2.00 (-100dB) . . . . 5
General Specifications:
Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . 6
Pin-out/package data . . . . . . . . . . . . . . . . . . . . . . . . 6
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
858 Series
8-Bit Programmable Filters
Digital Tuning Characteristics
The digital tuning interface circuits are two 4042 quad CMOS
latches which accept the following CMOS-compatible inputs:
eight tuning bits (D
0
- D
7
), a latch strobe bit (C), and a transition
polarity bit (P).
Filter tuning follows the tuning equation given below:
f
c
= ( f
max
/256 ) [ 1 + D
7
x 2 + D
6
x 2 + D
5
x 2 + D
4
x 2 + D
3
x
2 + D
2
x 2 + D
1
x 2 + D
0
x 2 ]
where D
1
- D
7
= "0" or "1", and
f
max
= Maximum tuning frequency;
f
c
= corner frequency;
Minimum tunable frequency = f
max
/256 (D
0
thru D
7
= 0);
Minimum frequency step (Resolution) = f
max
/256
3
2
1
0
7
6
5
4
Digital Tuning &
Control Characteristics
Pin-Out Key
IN
OUT
GND
“P”
“C”
+Vs
-Vs
Os
Analog Input Signal
Analog Output Signal
Power and Signal Return
Transition Polarity Bit
Tuning Strobe Bit
Supply Voltage, Positive
Supply Voltage, Negative
Offset Adjustment
D
7
Tuning
D
6
Tuning
D
5
Tuning
D
4
Tuning
D
3
Tuning
D
2
Tuning
D
1
Tuning
D
0
Tuning
Bit
Bit
Bit
Bit
Bit
Bit
Bit
Bit
7 (MSB)
6
5
4
3
2
1
0 (LSB)
OUT +Vs -Vs
D
7
D
6
D
5
D
4
GND
D
3
D
2
D
1
D
0
IN Os
Data Input Specifications
Data Control Lines
Functions
Latch Strobe (C)
Transition Polarity (P)
frequency follows input codes
frequency latched on rising edge
frequency follows input codes
frequency latched on falling edge
Data Control Modes
Mode 1
P = 0; C = 0
P = 0; C = 0›
Mode 2
P = 1; C = 1
P = 1; C = 1fl
Bottom View
P C
MSB
Input Data Levels
(CMOS Logic)
4 Vdc max.
15 Vdc max.
-1
mA
max.
.
+1
mA
max.
7.5 pF max.
0
0
0
0
0
1
2
7
---
2
6
---
2
5
---
2
4
---
2
3
---
2
2
---
2
1
LSB
2
0
Bit
Weight
Corner
Frequency
fc
Input Voltage (Vs = 15 Vdc)
Low Level In
0 Vdc min.
High Level In
11 Vdc min.
Input Current
High Level In
Low Level In
Input Capacitance
Input Data Format
Positive Logic
Bit Weighting
D
0
D
7
Frequency Range
- 10
mA
typ.
-5
+10
mA
typ
.
5 pF typ
-5
D
7
0
0
0
D
6
0
0
0
0
0
0
0
1
1
D
5
0
0
0
0
0
0
1
1
1
D
4
0
0
0
0
0
1
1
1
1
D
3
0
0
0
0
1
1
1
1
1
D
2
0
0
0
1
1
1
1
1
1
D
1
0
0
1
1
1
1
1
1
1
D
0
0
1
1
1
1
1
1
1
1
f
max
/256
f
max
/128
f
max
/64
f
max
/32
f
max
/16
f
max
/8
f
max
/4
f
max
/2
fmax
Frequency Select Bits
Logic "1" = +Vs
Logic "0" = Gnd
(Binary-Coded)
LSB (least significant bit)
MSB (most significant bit)
256 : 1, Binary Weighted
Notes:
1. Frequency data must be present before occurrence of strobe edge.
2. Frequency data must be present after occurrence of strobe edge.
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
858 Series
8-Bit Programmable
Model
Product Specifications
Transfer Function
Size, Model 2
Model 3 thru 6
Range f
c
, f
r
Theoretical Transfer
Characteristics
Passband Ripple
(theoretical)
8-Pole
Low-Pass Filters
858L8E
858L8EX
858L8EY
858L8B
8-Pole
Butterworth
4.0” x 2.0” x 0.6”
4.0” x 2.0” x 0.4”
0.1 Hz to 102.4 kHz
Appendix A
Page 9
0.0 dB
0 ± 0.1 dB max.
0 ± 0.05 dB typ.
48 dB/octave
f
c
± 0.01% /°c
- 3 dB
-360°
0.12 dB
3.01 dB
60.0 dB
80.0 dB
0 - 0.8 f
c
± 2% max.
8-Pole, 6 zero
Elliptic
4.0” x 2.0” x 0.6”
4.0” x 2.0” x 0.4”
0.1 Hz to 102.4 kHz
Appendix A
Page 24
± 0.035 dB
0 ± 0.1 dB max.
0 ± 0.05 dB typ.
80 dB min.
f
r
± 0.01% /°c
- 0.035 dB
-323.5°
0.035 dB
3.01 dB
60.0 dB
80.0 dB
0 - 0.8 f
r
± 2% max.
8-Pole, 6 zero
Elliptic
4.0” x 2.0” x 0.6”
4.0” x 2.0” x 0.4”
0.1 Hz to 102.4 kHz
Appendix A
Page 23
0.05 dB
0 ± 0.1 dB max.
0 ± 0.05 dB typ.
80 dB min.
f
r
± 0.01% /°c
- 0.05 dB
-414°
0.5 dB
3.01 dB
60.0 dB
80.0 dB
0 - 0.8 f
r
± 2% max.
8-Pole, 6 zero
Elliptic
4.0” x 2.0” x 0.6”
4.0” x 2.0” x 0.4”
0.1 Hz to 102.4 kHz
Appendix A
Page 25
0.05 dB
0 ± 0.1 dB max.
0 ± 0.05 dB typ.
100 dB min.
f
r
± 0.01% /°c
- 0.05 dB
-419°
0.5 dB
3.01 dB
80.0 dB
100.0 dB
0 - 0.8 f
r
0.8 f
r
- 1.0 f
r
0 - 0.8 f
r
0.8 f
r
- 1.0 f
r
± 2% max.
DC Voltage Gain
(non-inverting)
Stopband
Attenuation Rate
Cutoff Frequency
Stability
Amplitude
Phase
Filter Attenuation
(theoretical)
0.80 f
c
1.00 f
c
2.37 f
c
3.16 f
c
1.00 f
r
1.13 f
r
1.67 f
r
1.77 f
r
1.00 f
r
1.05 f
r
1.45 f
r
1.56 f
r
1.00 f
r
1.06 f
r
1.83 f
r
2.00 f
r
± 3° max.
± 1.5° typ.
± 4° max.
± 2° typ.
± 0.2 dB max.
± 0.1 dB typ.
± 0.5 dB max.
± 0.25 dB typ.
Phase Match
1
± 2° max.
± 1° typ.
0.8 fc - 1.0 f
c
± 3° max.
± 1.5° 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.
± 2° max.
± 1° typ.
0.8 f
r
- 1.0 f
r
± 4° max.
± 2° typ.
± .2 dB max.
± .1 dB typ.
0.8 f
r
- 1.0 f
r
± .3 dB max.
± .15 dB typ.
< - 88 dB typ.
200
mVrms
typ.
50
mVrms
typ.
0 - 0.8 f
r
± 3° max.
± 1.5° typ.
0.8 f
r
- 1.0 f
r
± 4° max.
± 2° typ.
0 - 0.8 f
r
± 0.2 dB max.
± 0.1 dB typ.
0.8 f
r
- 1.0 f
r
± 0.5 dB max.
± 0.25 dB typ.
< - 88 dB typ.
250
mVrms
typ.
75
mVrms
typ.
Amplitude Accuracy
(theoretical)
Total Harmonic
Distortion @ 1 kHz
Wide Band Noise
(5 Hz - 2 MHz)
< - 100 dB typ.
200
mVrms
typ.
50
mVrms
typ.
< - 88 dB typ.
250
mVrms
typ.
75
mVrms
typ.
Narrow Band Noise
(5 Hz - 100 kHz)
Filter Mounting
Assembly
FMA-03A
FMA-03A
FMA-03A
FMA-03A
1.Unit to unit match for the same transfer function, set to the same frequency and operating configuration, and from the same manufacturing lot.
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
858 Series
8-Bit Programmable
Model
Product Specifications
Transfer Function
Size, Model 2
Model 3 thru 6
Range f
c
Theoretical Transfer
Characteristics
Passband Ripple
(theoretical)
8-Pole
Low-Pass Filters
858L8D60
858L8D80
858L8D10
858L8L
8-Pole
Bessel
4.0” x 2.0” x 0.6”
4.0” x 2.0” x 0.4”
0.1 Hz to 102.4 kHz
Appendix A
Page 4
0.0 dB
0 ± 0.1 dB max.
0 ± 0.05 dB typ.
48 dB/octave
f
c
± 0.01% /°c
- 3 dB
-182°
1.91 dB
3.01 dB
60.0 dB
80.0 dB
0 - f
c
0 - f
c
± 2% max.
8-Pole, 6 zero
Constant Delay
4.0” x 2.0” x 0.6”
4.0” x 2.0” x 0.4”
0.1 Hz to 102.4 kHz
Appendix A
Page 20
0.15 dB
0 ± 0.1 dB max.
0 ± 0.05 dB typ.
60 dB min.
f
c
± 0.01% /°c
- 3 dB
-306°
3.01 dB
40.0 dB
60.0 dB
0 - f
c
0 - 0.8 f
c
± 2% max.
8-Pole, 6 zero
Constant Delay
4.0” x 2.0” x 0.6”
4.0” x 2.0” x 0.4”
0.1 Hz to 102.4 kHz
Appendix A
Page 21
0.15 dB
0 ± 0.1 dB max.
0 ± 0.05 dB typ.
80 dB min.
f
c
± 0.01% /°c
- 3 dB
-306°
3.01 dB
60.0 dB
80.0 dB
0 - f
c
0 - 0.8 f
c
± 2% max.
8-Pole, 6 zero
Constant Delay
4.0” x 2.0” x 0.6”
4.0” x 2.0” x 0.4”
0.1 Hz to 102.4 kHz
Appendix A
Page 22
0.15 dB
0 ± 0.1 dB max.
0 ± 0.05 dB typ.
100 dB min.
f
c
± 0.01% /°c
- 3 dB
-311°
3.01 dB
80.0 dB
100.0 dB
0 - f
c
0 - 0.8 f
c
0.8 f
c
- 1.0 f
c
± 2% max.
DC Voltage Gain
(non-inverting)
Stopband
Attenuation Rate
Cutoff Frequency
Stability
Amplitude
Phase
Filter Attenuation
(theoretical)
0.80 f
c
1.00 f
c
4.52 f
c
6.07 f
c
± 2° max.
± 1° typ.
± 0.2 dB max.
± 0.1 dB typ.
1.00 f
c
2.28 f
c
2.64 f
c
± 2° max.
± 1° typ.
1.00 f
c
3.08 f
c
3.57 f
c
± 2° max.
± 1° typ.
1.00 f
c
4.45 f
c
5.20 f
c
± 2° max.
± 1° typ.
± 0.2 dB max.
± 0.1 dB typ.
± 0.3 dB max.
± 0.15 dB typ.
Phase Match
1
Amplitude Accuracy
(theoretical)
± 0.2 dB max.
± 0.1 dB typ.
0.8 f
c
- 1.0 f
c
± 0.3 dB max.
± 0.15 dB typ.
< - 100 dB typ.
200
mVrms
typ.
50
mVrms
typ.
± 0.2 dB max.
± 0.1 dB typ.
0.8 f
c
- 1.0 f
c
± 0.3 dB max.
± 0.15 dB typ.
< - 100 dB typ.
200
mVrms
typ.
50
mVrms
typ.
Total Harmonic
Distortion @ 1 kHz
Wide Band Noise
(5 Hz - 2 MHz)
< - 100 dB typ.
200
mVrms
typ.
50
mVrms
typ.
< - 100 dB typ.
200
mVrms
typ.
50
mVrms
typ.
Narrow Band Noise
(5 Hz - 100 kHz)
Filter Mounting
Assembly
FMA-03A
FMA-03A
FMA-03A
FMA-03A
1.Unit to unit match for the same transfer function, set to the same frequency and operating configuration, and from the same manufacturing lot.
4
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
858 Series
8-Bit Programmable
Model
Product Specifications
Transfer Function
Size, Model 2
Model 3 thru 6
Range f
c,
f
r
Theoretical Transfer
Characteristics
Passband Ripple
(theoretical)
8-Pole
High-Pass Filters
858H8E
858H8EX
858H8EY
858H8B
8-Pole
Butterworth
4.0” x 2.0” x 0.6”
4.0” x 2.0” x 0.4”
0.1 Hz to 102.4 kHz
Appendix A
Page 29
0.0 dB
0 ± 0.2 dB to 100 kHz
0 ± 0.5 dB to 120 kHz
120 kHz
(-6 dB) 1 MHz
8-Pole, 6 zero
Elliptic
4.0” x 2.0” x 0.6”
4.0” x 2.0” x 0.4”
0.1 Hz to 102.4 kHz
Appendix A
Page 37
± 0.035 dB
0 ± 0.2 dB to 100 kHz
0 ± 0.5 dB to 120 kHz
120 kHz
(-6 dB) 1 MHz
8-Pole, 6 zero
Elliptic
4.0” x 2.0” x 0.6”
4.0” x 2.0” x 0.4”
0.1 Hz to 102.4 kHz
Appendix A
Page 36
- 0.05 dB
0 ± 0.2 dB to 100 kHz
0 ± 0.5 dB to 120 kHz
120 kHz
(-6 dB) 1 MHz
8-Pole, 6 zero
Elliptic
4.0” x 2.0” x 0.6”
4.0” x 2.0” x 0.4”
0.1 Hz to 102.4 kHz
Appendix A
Page 38
- 0.05 dB
0 ± 0.2 dB to 100 kHz
0 ± 0.5 dB to 120 kHz
120 kHz
(-6 dB) 1 MHz
Voltage Gain
(non-inverting)
Power Bandwidth
Small Signal
Bandwidth
Stopband
Attenuation Rate
Cutoff Frequency
Stability
Amplitude
Phase
Filter Attenuation
(theoretical)
48 dB/octave
f
c
± 0.01% /°c
- 3 dB
-360°
80 dB
60.0 dB
3.01 dB
0.00 dB
± 2% max.
80 dB
f
r
± 0.01% /°c
- 0.035 dB
-323.5°
80 dB
60.0 dB
3.01 dB
0.03 dB
0.00 dB
f
r
- 1.25 f
r
± 2% max.
80 dB
f
r
± 0.01% /°c
- 0.05 dB
-414°
80 dB
60.0 dB
3.01 dB
0.03 dB
0.00 dB
f
r
- 1.25 f
r
± 2% max.
100 dB
f
r
± 0.01% /°c
- 0.05 dB
-419°
100 dB
80.0 dB
3.01 dB
0.03 dB
0.00 dB
f
r
- 1.25 f
r
± 2% max.
0.31 f
c
0.42 f
c
1.00 f
c
2.00 f
c
0.56 f
r
0.60 f
r
0.88 f
r
1.00 f
r
2.00 f
r
0.64 f
r
0.69 f
r
0.95 f
r
1.00 f
r
2.00 f
r
0.50 f
r
0.55 f
r
0.94 f
r
1.00 f
r
2.00 f
r
Phase Match
1
f
c
- 100 kHz ± 3° max.
± 1.5° typ.
± 4° max.
± 2° typ.
1.25 f
r
-100 kHz ± 2° max.
± 1° typ.
± 4° max.
± 2° typ.
1.25 f
r
-100 kHz± 2° max.
± 1° typ.
± 4° max.
± 2° typ.
1.25 f
r
-100 kHz ± 3° max.
± 1.5° typ.
± 0.5 dB max.
± 0.25 dB typ.
± 0.2 dB max.
± 0.1 dB typ.
Amplitude Accuracy
(theoretical)
± 0.30 dB max. f
r
-1.25 f
r
± 0.15 dB typ.
1.25 f
c
-100kHz± 0.20 dB max. 1.25 f
r
-100 kHz
± 0.10 dB typ.
< - 100 dB typ.
400
mVrms
typ.
100
mVrms
typ.
< - 88 dB typ.
f
c
-1.25 f
c
± 0.3 dB max. f
r
-1.25 f
r
± 0.15 dB typ.
± 0.2 dB max. 1.25 f
r
-100 kHz
± 0.1 dB typ.
< - 88 dB typ.
± 0.5 dB max. f
r
-1.25 f
r
± 0.25 dB typ.
± 0.2 dB max. 1.25 f
r
-100 kHz
± 0.1 dB typ.
< - 88 dB typ.
500
mVrms
typ.
150
mVrms
typ.
Total Harmonic
Distortion @ 1 kHz
Wide Band Noise
(5 Hz - 2 MHz)
400
mVrms
typ.
100
mVrms
typ.
500
mVrms
typ.
150
mVrms
typ.
Narrow Band Noise
(5 Hz - 100 kHz)
Filter Mounting
Assembly
FMA-03A
FMA-03A
FMA-03A
FMA-03A
1.Unit to unit match for the same transfer function, set to the same frequency and operating configuration, and from the same manufacturing lot.
5
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
