Kemo 1608 filter modules are 8 pole filter modules, in a 50 x 50 mm (2 x 2 ") package. The 1608 filter modules use 8 unlatched control lines to set the filter module cut-off frequencies, in 255 steps of multiples of the modules base frequency.
   1600 Filter Module pdf data sheet (43 kB) file.

When designing circuits to around all the Kemo filter modules it is important to follow these guidelines:-
Clean stable noise free power rails
Decouple power rails close to the filter
Connect 'trim' pin to trim circuit or ground
Use large ground tracks and ground planes if possible
High speed digital signals and analogue circuits do not always mix well
Beware digital noise, even on zero volt lines
Beware DC-DC converters (see our DC-DC page)

Specification 1608 (typical values in passband)

Dimensions            50 x 50 x 15 mm (2 x 2 x 0.6")
Weight                   50 gms (1.8 oz)
Connectors            Sockets suitable for 
                             0.6mm square pins 5mm long
                             (0.025" x 0.2")
Input impedance     1MΩ
Output impedance   47 Ω
Output current        8 mA (max)
Supply voltage        +/- 7 V to +/- 16 V DC
Supply current        50 mA
Gain                      - 1 dB (trim adjusts to 0 dB)
DC Offset             < +/- 60 mV (trim adjusts)
DC Offset drift       100 μV/°C at 25 °C
Signal level             within +/- 2.5 Volts of supply
Phase matching     +/- 2° (usually < +/- 1°)
Amplitude matching depends on filter response
Noise and THD       < 0.003%

NOTE - these are general figures, signal level, filter response, and frequency are all factors which influence filter performance. We manufacture filter modules from the best components we can obtain, and usually produce well matched batches of filter modules.
Contact us if you have a specific question.

Typical Circuit
Below is the typical circuit that we recommend for use with the 1608 filter modules. If the trim circuit is not used the trim pin should be connected to 0 Volts.