SPMCK16Z4MPV20 datasheet(346/500 Pages) FREESCALE

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ELECTRICAL CHARACTERISTICS

M68HC16 Z SERIES

A-62

USER’S MANUAL

Table A-32 ADC Maximum Ratings

Num

Parameter

Symbol

Min

Max

Unit

Analog Supply

VDDA

–0.3

6.5

Internal Digital Supply, with reference to VSSI

VDDI

–0.3

6.5

Reference Supply, with reference to VSSI

VRH, VRL

–0.3

6.5

4VSS Differential Voltage

VSSI –VSSA

–0.1

0.1

5VDD Differential Voltage

VDDI –VDDA

–6.5

6.5

6VREF Differential Voltage

VRH –VRL

–6.5

6.5

7VRH to VDDA Differential Voltage

VRH –VDDA

–6.5

6.5

8VRL to VSSA Differential Voltage

VRL –VSSA

–6.5

6.5

Disruptive Input Current1, 2, 3, 4, 5, 6, 7

VNEGCLAMP ≅ –0.3 V

VPOSCLAMP ≅ 8 V

NOTES:

1. Below disruptive current conditions, a stressed channel will store the maximum conversion value for analog

inputs greater than VRH and the minimum conversion value for inputs less than VRL. This assumes that VRH ≤

VDDA and VRL ≥ VSSA due to the presence of the sample amplifier. Other channels are not affected by non-

disruptive conditions.

2. Input signals with large slew rates or high frequency noise components cannot be converted accurately. These

signals also interfere with conversion of other channels.

3. Exceeding limit may cause conversion error on stressed channels and on unstressed channels. Transitions

within the limit do not affect device reliability or cause permanent damage.

4. Input must be current limited to the value specified. To determine the value of the required current-limiting re-

sistor, calculate resistance values using positive and negative clamp values, then use the larger of the calcu-

lated values.

5. This parameter is periodically sampled rather than 100% tested.

6. Applies to single pin only.

7. The values of external system components can change the maximum input current value, and affect operation.

A voltage drop may occur across the external source impedances of the adjacent pins, impacting conversions

on these adjacent pins. The actual maximum may need to be determined by testing the complete design.

INA

–500

500

µA

Positive Overvoltage Current Coupling Ratio1,5,6,8

8. Current coupling is the ratio of the current induced from overvoltage (positive or negative, through an external

series coupling resistor), divided by the current induced on adjacent pins. A voltage drop may occur across the

external source impedances of the adjacent pins, impacting conversions on these adjacent pins.

2000

—

Negative Overvoltage Current Coupling Ratio1,5,6,8

500

—

Maximum Input Current 3,4,6

VNEGCLAMP ≅ –0.3 V

VPOSCLAMP ≅ 8 V

IMA

–25

Freescale Semiconductor, Inc.

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