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Details, datasheet, quote on part number:R858Series
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Datasheet text preview:
R858 Series
1.0 Hz to 102.4 kHz 8-Bit Programmable
Description
2" x 4" Range Switch 8-Pole Filters
The R858 Series are digitally programmable, 8-pole low-pass and high-pass active filters that contain a low and a high programmable frequency range, with each range tunable over a 256:1 ratio. R858 filters are available with any two of five standard factoryset tuning ranges or 8-bit custom ranges from 1.0 Hz to 102.4 kHz. These units contain 8 CMOS logic inputs that can be operated in a transparent or latching mode and 1 logic input for range selection. All R858 Series models are convenient, easy to use, fully finished filters which require no external components or adjustments. They feature low harmonic distortion, and precision phase and amplitude characteristics. R858 filters operate from noncritical ±12 to ±18 Vdc power supplies, have a 10 kW (min.) input impedance, a 10 W (max.) output impedance.
Features/Benefits:
· 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
Programmable Specifications: . . . . . . . . . . . . . Page Digital Tuning & Control. . . . . . . . . . . . . . . . . . . . . . 2 Available Low-Pass Models: . . . . . . . . . . . . . . . . . . . R858L8B 8-pole Butterworth . . . . . . . . . . . . . . . 3 R858L8E 8-pole, 6 zero elliptic, 1.77 (-80dB) . . . 3 R858L8EX 8-pole, 6 zero elliptic, 1.56 (-80dB) . . . 3 R858L8EY 8-pole, 6 zero elliptic, 2.00 (-100dB) . . 3 R858L8L 8-pole Bessel . . . . . . . . . . . . . . . . . . . 4 R858L8D60 8-pole constant delay (-60dB). . . . . . . 4 R858L8D80 8-pole constant delay (-80dB). . . . . . . 4 R858L8D10 8-pole constant delay (-100dB) . . . . . . 4 Available High-Pass Models: . . . . . . . . . . . . . . . . . . R858H8B 8-pole Butterworth . . . . . . . . . . . . . . . . 5 R858H8E 8-pole, 6 zero elliptic, 1.77 (-80dB) . . . 5 R858H8EX 8-pole, 6 zero elliptic, 1.56 (-80dB) . . . 5 R858H8EY 8-pole, 6 zero elliptic, 2.00 (-100dB) . . 5 General Specifications: Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . 6 Pin-out/package data . . . . . . . . . . . . . . . . . . . . . . . . 6
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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
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
R858 Series
Range Switch 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 (D0 - D7), arrange selection bit (R), a latch strobe bit (C), and a transition polarity bit (P). Filter tuning follows the tuning equation given below: fc = ( fmax/256 ) [ 1 + D7 x 2 + D6 x 2 + D5 x 2 + D4 x 2 + D3 x 2 + D2 x 2 + D1 x 2 + D0 x 2 ] where D1 - D7 = "0" or "1", and fmax = Maximum tuning frequency; fc = corner frequency; Minimum tunable frequency = fmax/256 (D0 thru D7 = 0); Minimum frequency step (Resolution) = fmax/256
3 2 1 0 7 6 5 4
Digital Tuning & Control Characteristics
Pin-Out Key
IN OUT GND "P" "C" +Vs -Vs Os R Analog Input Signal Analog Output Signal Power and Signal Return Transition Polarity Bit Tuning Strobe Bit Supply Voltage, Positive Supply Voltage, Negative Offset Adjustment Range Switch Adjustment D7 Tuning D6 Tuning D5 Tuning D4 Tuning D3 Tuning D2 Tuning D1 Tuning D0 Tuning Bit Bit Bit Bit Bit Bit Bit Bit 7 (MSB) 6 5 4 3 2 1 0 (LSB)
R D7 D6 D5 D4 2.00 GND D3 D2 D1 D0 IN Os4
OUT +Vs -Vs
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 Input Data Levels P = 1; C = 1 P = 1; C = 1fl
Bottom View
PC
(CMOS Logic) 4 Vdc max. 15 Vdc max. -1 mA max.. +1 mA max. 7.5 pF max.
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 Latch Response Data Set Up Time1 Data Hold Time2 Strobe Pulse Width Input Data Format Positive Logic Bit Weighting D0 D7 Frequency Range - 10 mA typ. -5 +10 mA typ. 5 pF typ 25 nS 50 nS 80 nS min.
-5
MSB 2
7
--2
6
--2
5
--2
4
--2
3
--2
2
--2
1
LSB 2
0
Bit Weight
Corner Frequency
fc
D7 0 0 0 0 0 0 0 0
D6 0 0 0 0 0 0 0 1 1
D5 0 0 0 0 0 0 1 1 1
D4 0 0 0 0 0 1 1 1 1
D3 0 0 0 0 1 1 1 1 1
D2 0 0 0 1 1 1 1 1 1
D1 0 0 1 1 1 1 1 1 1
D0 0 1 1 1 1 1 1 1 1
fmax/256 fmax/128 fmax/64 fmax/32 fmax/16 fmax/8 fmax/4 fmax/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.
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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
R858 Series
Range Switch 8-Bit Programmable
Model Product Specifications Transfer Function Size Range fc, fr Theoretical Transfer Characteristics Passband Ripple
(theoretical)
8-Pole Low-Pass Filters
R858L8E R858L8EX R858L8EY
R858L8B
8-Pole Butterworth 4.0" x 2.0" x 0.6" 1.0 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 fc ± 0.01% /°c - 3 dB -360° 0.12 dB 3.01 dB 60.0 dB 80.0 dB 0 - 0.8 fc ± 2% max.
8-Pole, 6 zero Elliptic 4.0" x 2.0" x 0.6" 1.0 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. fr ± 0.01% /°c - 0.035 dB -323.5° 0.035 dB 3.01 dB 60.0 dB 80.0 dB 0 - 0.8 fr ± 2% max.
8-Pole, 6 zero Elliptic 4.0" x 2.0" x 0.6" 1.0 Hz to 102.4 kHz Appendix A Page 23
- 0.05
8-Pole, 6 zero Elliptic 4.0" x 2.0" x 0.6" 1.0 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. ± 2% max. fr ± 0.01% /°c - 0.05 dB -419° 0.5 dB 3.01 dB 80.0 dB 100.0 dB 0 - 0.8 fr ± 2% max.
dB
DC Voltage Gain
(non-inverting)
0 ± 0.1 dB max. 0 ± 0.05 dB typ. 80 dB min. fr ± 0.01% /°c - 0.05 dB -414° 0.5 dB 3.01 dB 60.0 dB 80.0 dB 0 - 0.8 fr
Stopband Attenuation Rate Cutoff Frequency Stability Amplitude Phase Filter Attenuation
(theoretical)
0.80 fc 1.00 fc 2.37 fc 3.16 fc
1.00 fr 1.13 fr 1.67 fr 1.77 fr
1.00 fr 1.05 fr 1.45 fr 1.56 fr
1.00 fr 1.06 fr 1.83 fr 2.00 fr
Phase Match1
± 2° max. ± 1° typ. 0.8 fc - 1.0 fc ± 3° max. ± 1.5° typ. 0 - 0.8 fc ± 0.2 dB max. ± 0.1 dB typ. 0.8 fc - 1.0 fc ± 0.3 dB max. ± 0.15 dB typ.
± 2° max. ± 1° typ. 0.8 fr - 1.0 fr ± 4° max. ± 2° typ. 0 - 0.8 fr ± 0.2 dB max. ± 0.1 dB typ. 0.8 fr - 1.0 fr ± 0.3 dB max. ± 0.15 dB typ. < - 88 dB typ. 200 mVrms typ. 50 mVrms typ.
± 3° max. ± 1.5° typ. 0.8 fr - 1.0 fr ± 4° max. ± 2° typ. 0 - 0.8 fr ± 0.2 dB max. ± 0.1 dB typ. 0.8 fr - 1.0 fr ± 0.5 dB max. ± 0.25 dB typ. < - 88 dB typ. 250 mVrms typ. 75 mVrms typ.
± 3° max. ± 1.5° typ. 0.8 fr - 1.0 fr ± 4° max. ± 2° typ. 0 - 0.8 fr ± 0.2 dB max. ± 0.1 dB typ. 0.8 fr - 1.0 fr ± 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.
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.
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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
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