MPC5604B datasheet(74/106 Pages) FREESCALE

74 / 106 page

MPC5604B/C Microcontroller Data Sheet, Rev. 8

Electrical characteristics

Freescale Semiconductor

Equation 4 generates a constraint for external network design, in particular on a resistive path. Internal switch resistances (RSW

and RAD) can be neglected with respect to external resistances.

Figure 18. Input equivalent circuit (precise channels)

Figure 19. Input equivalent circuit (extended channels)

RSW1

CP2

VDD

Sampling

Source

Filter

Current Limiter

EXTERNAL CIRCUIT

INTERNAL CIRCUIT SCHEME

Source Impedance

Filter Resistance

Filter Capacitance

Current Limiter Resistance

RSW1 Channel Selection Switch Impedance

RAD Sampling Switch Impedance

Pin Capacitance (two contributions, CP1 and CP2)

Sampling Capacitance

CP1

RAD

Channel

Selection

RSW1

CP3

VDD

Sampling

Source

Filter

Current Limiter

EXTERNAL CIRCUIT

INTERNAL CIRCUIT SCHEME

Source Impedance

Filter Resistance

Filter Capacitance

Current Limiter Resistance

RSW Channel Selection Switch Impedance (two contributions RSW1 and RSW2)

RAD Sampling Switch Impedance

Pin Capacitance (three contributions, CP1, CP2 and CP3)

Sampling Capacitance

CP1

RAD

Channel

Selection

CP2

Extended

RSW2

Switch

MPC5604B 数据表(PDF) 74 Page - Freescale Semiconductor, Inc

MPC5604B 数据表(HTML) 74 Page - Freescale Semiconductor, Inc

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