AFS090 datasheet(254/334 Pages) MICROSEMI

254 / 334 page

DC and Power Characteristics

3- 4

R e v ision 2

Table 3-3 • Input Resistance of Analog Pads

Pads

Pad Configuration

Prescaler Range

Input Resistance to Ground

AV, AC

Analog Input (direct input to ADC)

–

2 k

Ω (typical)

–

> 10 M

Analog Input (positive prescaler)

+16 V to +2 V

1 M

Ω (typical)

+1 V to +0.125 V

> 10 M

Analog Input (negative prescaler)

–16 V to –2 V

1 M

Ω (typical)

–1 V to –0.125 V

> 10 M

Digital input

+16 V to +2 V

1 M

Ω (typical)

Current monitor

+16 V to +2 V

1 M

Ω (typical)

–16 V to –2 V

1 M

Ω (typical)

Analog Input (direct input to ADC)

–

1 M

Ω (typical)

Analog Input (positive prescaler)

+16 V, +4 V

1 M

Ω (typical)

Digital input

+16 V, +4 V

1 M

Ω (typical)

Temperature monitor

+16 V, +4 V

> 10 M

Table 3-4 • Overshoot and Undershoot Limits 1

VCCI

Average VCCI–GND Overshoot or Undershoot

Duration as a Percentage of Clock Cycle2

Maximum Overshoot/

Undershoot2

2.7 V or less

10%

1.4 V

1.49 V

3.0 V

10%

1.1 V

1.19 V

3.3 V

10%

0.79 V

0.88 V

3.6 V

10%

0.45 V

0.54 V

Notes:

1. Based on reliability requirements at a junction temperature of 85°C.

2. The duration is allowed at one cycle out of six clock cycle. If the overshoot/undershoot occurs at one out of two cycles,

the maximum overshoot/undershoot has to be reduced by 0.15 V.

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