MB40528 Ver la hoja de datos (PDF) - Fujitsu

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componentes Descripción

fabricante

MB40528

1 CHANNEL 8-BIT A/D CONVERTER

Fujitsu 

MB40528

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s EQUIVALENT CIRCUITS

Figure 4. Analog Input Equivalent Circuit

VCC

VINA

VCC

VINA

CINA

VD

IBIAS

RINA

x 255 CIRCUITS

GND

GND

VRB

CINA: Non-linear Emitter-follower Junction Capacitance

RINA: Linear Resistance Model for Input Current Transition by Comparator Switching:

finite value for VINA < VRB or when CLK=High

VRB: Voltage at VRB pin (Not the VRB pin itself)

IBIAS: Constant Input Bias Current

VD: The base-collector junction diode of emitter-follower transistor.

Figure 5. Reference Voltage Circuit

VCC

GND

20kΩ

Buffer

IRB

30kΩ

VRB pin

8

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