828BP4/10-3

828BP FREQUENCYDEVICES | Alldatasheet

Document overview

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• PDF pages: 8

Technical content

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

Applications

• 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
• Frequency spectrum analysis 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. 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 ±2% 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 828BPmodels are 1, 2, 5, or 10 and 828BR filters are 3 or 10. Band Pass and Band Reject 828BP& 828BR Series

8 Bit Programmable

Available Band-Pass Models: Available Band-Reject Models: General Specifications:

828BP& 828BR Series Digital Tuning & Control Characteristics e-mail: sales@freqdev.com • Web Address: http://www.freqdev.com 8-Bit Programmable Filters Digital Tuning Characteristics 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 (D 0 - D7). 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 Data Input Specifications Input Data Levels (CMOS Logic) Input Voltage (Vs = 15 Vdc) Low Level In 0 Vdc min. 4 Vdc max. High Level In 11 Vdc min. 15 Vdc max. Input Current High Level In - 10 µAtyp. -1 µAmax.. Low Level In +10 µAtyp. +1 µAmax. Input Capacitance 5 pF typ 7.5 pF max. Input Data Format Frequency Select Bits Positive Logic Logic "1" = +Vs Logic "0" = Gnd Bit Weighting (Binary-Coded) D0 LSB (least significant bit) D7 MSB (most significant bit) Frequency Range 256 : 1, Binary Weighted Pin-Out Key IN Analog Input Signal D 7 Tuning Bit 7 (MSB) OUT Analog Output Signal D 6 Tuning Bit 6 GND Power and Signal Return D 5 Tuning Bit 5 +Vs Supply Voltage, Positive D 4 Tuning Bit 4 -Vs Supply Voltage, Negative D 3 Tuning Bit 3 Os Offset Adjustment D 2 Tuning Bit 2 D1 Tuning Bit 1 D0 Tuning Bit 0 (LSB) MSB --- --- --- --- --- --- LSB Bit Weight fc Corner Frequency D7 D6 D5 D4 D3 D2 D1 D0 00000000 f max/256 00000001 f max/128 00000011 f max/64 00000111 f max/32 00001111 f max/16 00011111 f max/8 00111111 f max/4 01111111 f max/2 11111111 fmax +VsOUT -Vs D D D D GND D D D D IN 2.00 Bottom View Os

Band-Pass & Band-Reject 828BP& 828BR Series 8-Bit Programmable 4-Pole Pair Filters e-mail: sales@freqdev.com • Web Address: http://www.freqdev.com Model 828BP4 Model 828BR4 Product Specifications Band-Pass Product Specifications Band-Reject Range fo 1 Hz to 25.6 kHz Range fo 1 Hz to 25.6 kHz Available "Q’s"1 1, 2, 5, 10 Available "Q’s"1 3, 10 Q Accuracy ±10% Q Accuracy ±10% Theoretical Transfer Appendix A Theoretical Transfer Appendix A Characteristics Pages 41 & 42 Characteristics Pages 43 Notch Attenuation 45 db typ. Pass-Band Gain 0± 0.25 dB typ. Pass-Band Gain 0± 0.25 dB typ. (non-inverting) 0± 0.50 dB max. (non-inverting) 0± 0.50 dB max. Attenuation Rate 24 dB/octave Attenuation Rate 24 dB/octave Center Frequency fo ±2% max. Center Frequency fo ±2% max. Stability ±0.01%/°C Stability ±0.01%/°C Filter Mounting FMA-02A Filter Mounting FMA-02A Assembly Assembly 1. Q – Quality Factor for band-pass and band-reject filters. Q = f O/(fH-fL)f O = √fHfL

828BP& 828BR Series Pin-Out and Package Data

Ordering Information

We hope the information given here will be helpful. The information is based on data and our best knowledge, and we consider th e 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 as sume 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 copyri ght. PR-828BP/BR-03 e-mail: sales@freqdev.com • Web Address: http://www.freqdev.com Specification (25°C and Vs ±15Vdc) DC Offset Adjustment ± Vs - Vs 20 k Ω (Cermet) Do not connect if trim is not required. OS Analog Input Characteristics1 Impedance 10 k Ω min. Voltage Range ±10 Vpeak Max. Safe Voltage ±Vs Analog Output Characteristics Impedance (Closed Loop) 11 Ω typ. 10 Ω max. Linear Operating Range ±10V Maximum Current ±2 mA Offset Voltage 22 mV typ. 20 mV max. Offset Temp. Coeff. 50 µV/°C Power Supply (±V) Rated Voltage ±15 Vdc Operating Range ±12 to ±18 Vdc Maximum Safe Voltage ±18 Vdc Quiescent Current ±25 mAtyp. ±40 mAmax. Temperature Operating -20 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. 828BP4/10-4 Model Tuning Minimum Number Range (Hz) Step(Hz) Case 2 1.0 to 256 1.0 G-3 3 10 to 2560 10 G-3 4 100 to 25.6k 100 G-3 Model Filter Type BP- Band Pass BR- Band Reject +VsOUT -Vs D D D D GND D D D D IN 2.00 Bottom View 0.15 min. 0.025 Dia. Os G-3 0.5 2.00 All dimensions are in inches All Case Dimensions ± 0.02" Grid Dimensions 0.1" x 0.1" Filter Mounting Assembly-See FMA-02A Pin-Out & Package Data “Q” BP- 1, 2, 5, 10 BR- 3, 10

e-mail: sales@freqdev.com  Web Address: http://www.freqdev.com 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 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. Product Handling Procedure Programmable Filter Modules Power Sequence & ESD

e-mail: sales@freqdev.com Web Address: http://www.freqdev.com Amplitude Response Curves Normalized Theoretical Amplitude Data Q = 1 Q = 2 Q = 5 Q = 10 Amp fL < fO < fH fL < fO < fH fL < fO < fH fL < fO < fH (dB) f/ f o f/ f o f/ f o f/ f o f/ f o f/ f o f/ f o f/ f o 0.1 1.0 10.02 3 4 5 6 7 8 2 3 4 5 6 7 8 Normalized Frequency (f/fo) -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 Amp (dB) Normalized Frequency (f/fo) Amp (dB) Q10 Q10

e-mail: sales@freqdev.com Web Address: http://www.freqdev.com Phase Response Curves Normalized Frequency (f/fo) -270 -180 -90 180 270 360Phase (deg) Normalized Frequency (f/fo) -360 -270 -180 -90 180 270 360Phase (deg) Normalized Theoretical Phase Data Q = 1 Q = 2 Q = 5 Q = 10 Phase Mag (deg) f/fo f/fo f/fo f/fo f/fo f/fo f/fo f/fo Q10 Q10

e-mail: sales@freqdev.com Web Address: http://www.freqdev.com Q = 3 Q = 10 Amp (dB) -70 -60 -50 -40 -30 -20 -10 1.1 1.2.9.8 Q3 Q10 0.1 1.0 10.02 3 4 5 6 7 8 2 3 4 5 6 7 8 Normalized Theoretical Phase Data Q = 3 Q = 10 (-) (+) (-) (+) Phase Mag (deg) f/fo f/fo f/fo f/fo Normalized Frequency (f/fo) Normalized Frequency (f/fo) -360 -270 -180 -90 180 270 360Phase (deg) Phase Response CurvesAmplitude Response Curves Normalized Theoretical Amplitude Data Q10 Amp (dB) fL < fO < fH fL < fO < fH f / fO f / fO f / fO f / fO