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Details, datasheet, quote on part number:R854Series
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Datasheet text preview:
R854 Series
1.0 Hz to 102.4 kHz 8-Bit Programmable
Description The R854 Series are digitally programmable, 4-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. R854 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 R854 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. R854 filters operate from non-critical ±12 to ±18 Vdc power supplies, have a 10 k (min.) input impedance, a 10 (max.) output impedance. Features/Benefits: · 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. · Low profile design, ideal for rack mount installations. 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: . . . . . . . . . . . . . . . . . . . R854L4B 4-pole Butterworth. . . . . . . . . . . . . . . . . . 3 R854L4L 4-pole Bessel . . . . . . . . . . . . . . . . . . . . . 3 R854L8Y2 4-pole Cheby (0.2 dB Ripple) . . . . . . . . . 3 R854L8Y5 4-pole Cheby (0.5 dB Ripple) . . . . . . . . . 3 Available High-Pass Models: . . . . . . . . . . . . . . . . . . R854H8B 4-pole Butterworth. . . . . . . . . . . . . . . . . . 4 R854H8Y2 4-pole Cheby (0.2 dB Ripple) . . . . . . . . . 4 R854H8Y5 4-pole Cheby (0.5 dB Ripple) . . . . . . . . . 4 General Specifications: Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . 5 Pin-out/package data. . . . . . . . . . . . . . . . . . . . . . . . . 5
2" x 4" Range Switch 4-Pole Filters
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
R854 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), a range 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; R = 0, Maximum low range R = 1, Maximum Minimum tunable frequency = fmax/256 (D0 thru D7 = 0); Minimum frequency step (Resolution) = fmax/256
2 1 0 7 6 5 4 3
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 Optional 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 GND D3 D2 D1 D0
OUT +Vs -Vs
Data Control Specifications
Data Control Lines Functions Data Control Modes Mode 1 Mode 2 Input Data Levels Latch Strobe (C) Transition Polarity (P) P = 0; C = 0 frequency follows input codes P = 0; C = 0> frequency latched on rising edge P = 1; C = 1 frequency follows input codes P = 1; C = 1fl frequency latched on falling edge (CMOS Logic) 4 Vdc max. 15 Vdc max. -1 mA max. +1 mA max. 7.5 pF max. MSB 27 D7 0 0 0 - 10 mA typ. -5 +10 mA typ. 5 pF typ 25 nS 50 nS 80 nS min. Frequency Select Bits Logic "1" = +Vs Logic "0" = Gnd (Binary-Coded) LSB (least significant bit) MSB (most significant bit) 256 : 1, Binary Weighted
-5
IN Os4
Bottom View
--25 D5 0 0 0 0 0 0 1 1 1 --24 D4 0 0 0 0 0 1 1 1 1 --23 D3 0 0 0 0 1 1 1 1 1 --22 D2 0 0 0 1 1 1 1 1 1 --21 D1 0 0 1 1 1 1 1 1 1
PC
--26 D6 0 0 0 0 0 0 0 1 1
LSB 20 D0 0 1 1 1 1 1 1 1 1
Bit Weight fc
Corner Frequency
fmax/256 fmax/128 fmax/64 fmax/32 fmax/16 fmax/8 fmax/4 fmax/2 fmax
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 1 Data Set Up Time 2 Data Hold Time Strobe Pulse Width Input Data Format Positive Logic Bit Weighting D0 D7 Frequency Range
0 0 0 0 0 1
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
R854 Series
Range Switch 8-Bit Programmable
Model Product Specifications Transfer Function Size Range fc Theoretical Transfer Characteristics Passband Ripple
(theoretical)
4-Pole Low-Pass Filters
R854L8L R854L8Y2 R854L8Y5
R854L8B
4-Pole, Butterworth 4.0" x 2.0" x 0.6" 1.0 Hz to 102.4 kHz Appendix A Page 7 0.0 dB 0 ± 0.1 dB max. 0 ± 0.05 dB typ. 24 dB/octave fc ± 0.01% /°C - 3 dB -180° 0.67 dB 3.01 dB 30.0 dB 40.0 dB 0 - 0.8 fc ± 2% max.
4-Pole, Bessel 4.0" x 2.0" x 0.6" 1.0 Hz to 102.4 kHz Appendix A Page 2 0.0 dB 0 ± 0.1 dB max. 0 ± 0.05 dB typ. 24 dB/octave fc ± 0.01% /°C - 3 dB -121° 1.86 dB 3.01 dB 30.0 dB 40.0 dB 0 - fc ± 2% max.
4-Pole, Chebychev, 0.2 dB Ripple 4.0" x 2.0" x 0.6" 1.0 Hz to 102.4 kHz Appendix A Page 12 0.2 dB 0 ± 0.1 dB max. 0 ± 0.05 dB typ. 24 dB/octave fc ± 0.01% /°C - 3 dB - 231° -0.20 dB 3.01 dB 30.0 dB 40.0 dB 0 - 0.8 fc ± 2% max.
4-Pole, Chebychev, 0.5 dB Ripple 4.0" x 2.0" x 0.6" 1.0 Hz to 102.4 kHz Appendix A Page 15 0.5 dB 0 ± 0.1 dB max. 0 ± 0.05 dB typ. 24 dB/octave fc ± 0.01% /°C - 3 dB -245° -0.43 dB 3.01 dB 30.0 dB 40.0 dB 0 - 0.8 fc ± 2% max.
DC Voltage Gain
(non-inverting)
Stopband Attenuation Rate Cutoff Frequency Stability Amplitude Phase Filter Attenuation
(theoretical)
0.80 fc 1.00 fc 2.37 fc 3.16 fc
0.80 fc 1.00 fc 3.50 fc 4.72 fc ± 2° max. ± 1° typ.
0.80 fc 1.00 fc 1.89 fc 2.46 fc
0.80 fc 1.00 fc 1.80 fc 2.33 fc
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 fc - 1.0 fc ± 3° max. ± 1.5° typ. ± 0.2 dB max. ± 0.1 dB typ. 0.8 fc - 1.0 fc ± 0.3 dB max. ± 0.15 dB typ. < - 88 dB typ. 200 mVrms typ. 50 mVrms typ. 0 - 0.8 fc
± 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. < - 88 dB typ. 200 mVrms typ. 50 mVrms typ.
Amplitude Accuracy
(theoretical)
0 - fc
± 0.2 dB max. ± 0.1 dB 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
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
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