D68BP & D68BR Series
Band Pass and Band Reject
Description:
The D68BP and D68BR Series of small 4-pole-pair
fixed-frequency, precision band-pass and band-
reject (notch) active filters that provide high
performance in a compact 32-pin DIP package, with
a broad range of fixed center frequencies (fo) from 1
Hz to 100 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 fixed, user specified
center frequency, D68BP band-pass filters pass all
frequencies lying between the upper and lower -3dB
points of the amplitude response curve, while D68BR
band-reject (notch) filters sharply attenuate those
frequencies that are bound and defined by the
bottom of the notch. Available Q’s for D68 BP
models are 1, 2, 5, or 10 and D68BR filters are 3 or
10.
Features/Benefits:
• Compact 32-pin 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.
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
1
Fixed Frequency
4-Pole Pair Filters
Available Band-Pass Models:
. . . . . . . . . . . . .Page
D68BP4
4 pole pair . . . . . . . . . . . . . . . . . . .2
Available Band-Reject Models:
D68BR4
4-pole pair . . . . . . . . . . . . . . . . . . .2
General Specifications:
Ordering Information . . . . . . . . . . . . . . . . . . . . . . .3
Pin-Out/Package Data . . . . . . . . . . . . . . . . . . . . . .3
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
D68BP & D68BR Series
Specification
(25°C and Vs ±15Vdc)
Analog Input Characteristics
1
Impedance
Voltage Range
Max. Safe Voltage
Analog Output Characteristics
Impedance (Closed Loop)
Linear Operating Range
2
Maximum Current
3
Offset Voltage
Offset Temp. Coeff.
Power Supply (
±
V)
Rated Voltage
Operating Range
Maximum Safe Voltage
Quiescent Current
Temperature
Operating
Storage
10 k
Ω
min.
±
10 Vpeak
±
Vs
11
Ω
typ.
10
Ω
max.
±
10V
±
2 mA
22
mV typ.
20 mV max.
50
µV/°C
Pin-Out and Package Data
Ordering Information
Pin-Out & Package Data
0.80
Side View
0.025 dia.
1.80
All dimensions are in inches
All case dimensions
±
0.01"
Front View
0.30
0.15 (min)
±
15 Vdc
±
5 to
±
18 Vdc
±
18 Vdc
±
25 mA typ.
±
40 mA max.
-20
to +70°C
-25 to +85°C
0.80
0.70
OUT
+VS
-VS OS
4
Bottom View
GND
IN
0.10
0.00
0.00
0.15
0.45
0.55
1.55
1.65
1.80
Ordering Information
DC Offset Adjustment
± Vs
Do not connect
if trim is not
required.
20 k
Ω
(Cermet)
OS
Filter Type
BP
- Band Pass
BR
- Band Reject
D68BP4/10-849 Hz
“Q”
BP
- 1, 2, 5, 10
BR
- 3, 10
(fo) Center Frequency
5
e.g.,
849 Hz
2.50 kHz
33.3 kHz
Notes:
- Vs
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 with out offset pin connected.
5. How to Specify Center Frequency:
Center frequencies are specified by attaching a three digit frequency
designator to the basic model number. Center frequencies can range from
1.00 Hz to 100 kHz.
We hope the information given here will be helpful. The information is based on data and our best knowledge, and we consider the 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 assume 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 copyright.
IN-D68BP/BR-04
3
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
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