Specification
(25°C and Vs ± 15 Vdc)
428 Series
Pin-Out and Package Data
Ordering Information
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
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-00428-01
20 k
Ω
(Cermet)
OS
+Vs
-Vs
Do not connect
if trim is not
required.
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
±2 mA
Offset Voltage
3
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 mA typ.
±40 mA max.
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.
DC Offset Adjustment
428 L4E-7
Binary Tuning Ranges
Model
Tuning
*Minimum
Number
Range (Hz)
Step (Hz)
1
10-160
10
2
25-400
25
3
50-800
50
4
100-1.60k
100
5
250-4.00k
250
6
500-8.00k
500
7
1.00k-16.0k
1.00k
8
2.50k-40.0k
2.50k
9
5.00k-80.0k
5.00k
10
6.40k-102.4k
6.40k
*Contact factory for custom step frequency. Maximum step 6.40 kHz.
Discrete Frequency’s
Customer must specify f
1 ,f2 ,f3, f4,f5.
Maximum span f
1
⇒ f
5 1,000:1.
Contact factory for custom frequency’s
Model Number
428 Transfer Function
B - Butterworth
L - Bessel
D60 - constant delay (-60 dB)
D80 - constant delay (-80 dB)
D10 - constant delay (-100 dB)
E - elliptic 1.77 (-80 dB)
EX- elliptic 1.56 (-80dB)
EY - elliptic 2.00 (-100 dB)
Filter Type
L - Low Pass
H - High Pass
Ordering Information
0.025 Dia.
All dimensions are in inches
All case dimensions ±0.02"
0.15 min.
(Side View)
428
0.00
0.50
Bottom View
0.70
0.80
0.00
0.10
Gnd Os
-Vs +Vs
D0
D2 D3
D1
+5V
Out
In
4
Pin-Out & Package Data
Filter Mounting Assembly-See FMA-02A
6
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