MF10 NSC [National Semiconductor], MF10 Datasheet
MF10
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MF10 Summary of contents
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... Universal Monolithic Dual Switched Capacitor Filter General Description The MF10 consists of 2 independent and extremely easy to use general purpose CMOS active filter building blocks Each block together with an external clock and resis- tors can produce various 2nd order functions Each building ...
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... Clock to MF10A CLK O Center Frequency MF10C Mode 1 Ratio Deviation f f 100 1 Clock to MF10A CLK O Center Frequency MF10C Mode 1 Ratio Deviation Clock Feedthrough Mode 1 Q Error (MAX (Note 4) Mode Lowpass Gain Mode 1 R1 OLP V DC Offset Voltage (Note 5) ...
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... Note 3 The maximum power dissipation must be derated at elevated temperatures and is dictated by T allowable power dissipation at any temperature is P device T 125 C and the typical junction-to-ambient thermal resistance of the MF10ACN CCN when board mounted For the MF10AJ CCJ this e JMAX ...
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Typical Performance Characteristics Power Supply Current vs Power Supply Voltage Negative Output Swing vs Temperature Q Deviation vs Temperature Q Deviation vs Clock Frequency Positive Output Voltage Swing Negative Output Voltage vs Load Resistance Swing vs Load ( ...
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Typical Performance Characteristics f f Deviation CLK O vs Clock Frequency Pin Descriptions LP(1 20) BP(2 19) The second order lowpass bandpass N AP HP(3 18) and notch allpass highpass outputs These outputs can typically sink and ...
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... Q ‘‘quality factor’’ of the 2nd order filter Q is measured at the bandpass outputs of the MF10 and is equal the 3 dB bandwidth of the 2nd order bandpass filter b (Figure 1) The value of Q determines the shape of the 2nd ...
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Definition of Terms (Continued 10399– 5 (a) FIGURE 1 2nd-Order Bandpass Response TL H 10399– 7 (a) FIGURE 2 2nd-Order Low-Pass Response ( ...
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Definitions of Terms (Continued 10399– 11 (a) FIGURE 4 2nd-Order Notch Response TL H 10399– 13 (a) FIGURE 5 2nd-Order All-Pass Response (a) Bandpass (d) Notch FIGURE 6 Response of various 2nd-order filters as a function ...
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... Since this is cumbersome and since the MF10 closely approximates continuous filters the following discussion is based on the well know frequency domain Each MF10 can produce a full 2nd order function See Ta- ble I for a summary of the characteristics of the various modes MODE 1 Notch 1 Bandpass Lowpass Outputs ...
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Modes of Operation (Continued) MODE 2 Notch 2 Bandpass Lowpass f notch k (See Figure center frequency CLK CLK 100 ...
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Modes of Operation (Continued) MODE and Notch with External Op Amp (See Figure CLK CLK 100 ...
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Modes of Operation (Continued) MODE 5 Numerator Complex Zeros BP LP (See Figure CLK 100 CLK f 1 ...
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... Chebyshev low-pass filter with 1 dB ripple unity gain at DC and 1000 Hz cutoff frequency As the system order is four it is realizable using both second-order sec- tions of an MF10 Many filter design texts include tables that list the characteristics (f and Q) of each of the second-or- ...
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Applications Information choosing R such that 20k If the 50 100 CL pin is connected to mid-sup ply for nominal 100 1 clock-to-center-frequency ratio we find R ...
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... The maximum signal handling capability of the MF10 like that of any active filter is limited by the power supply volt- ages used The amplifiers in the MF10 are able to swing to within about 1V of the supplies so the input signals must be kept small enough that none of the outputs will exceed ...
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... V OS3 V (N INV BP OS1 (INV BP OS3 INV BP OS(LP) OS OS2 FIGURE 19 MF10 Offset Voltage Sources (Continued) Mode 2 and Mode 5 V OS3 OS( OS2 OS(BP) OS3 ...
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... O od resulting in ‘‘steps’’ in the output voltage which occur at the clock rate (Figure 21) If necessary these can be ‘‘smoothed’’ with a simple R – C low-pass filter at the MF10 output The ratio CLK also affect performance A ratio of 100 1 will reduce any ...
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18 ...
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... Physical Dimensions inches (millimeters) 20-Lead Ceramic Dual-In-Line Package (J) Order Number MF10ACWM or MF10CCWM Order Number MF10AJ or MF10CCJ NS Package Number J20A Molded Package (Small Outline) (M) NS Package Number M20B 19 ...
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... Physical Dimensions inches (millimeters) (Continued) 20-Lead Molded Dual-In-Line Package (N) Order Number MF10ACN or MF10CCN LIFE SUPPORT POLICY NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF NATIONAL SEMICONDUCTOR CORPORATION As used herein ...