Z8F082ASH020SC datasheet(215/244 Pages) ZILOG

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PS024705-0405

P R E L I M I N A R Y

Electrical Characteristics

Z8 Encore! XP® F08xA Series

Product Specification

197

Table 124. Analog-to-Digital Converter Electrical Characteristics and Timing

Symbol

Parameter

VDD = 2.7 to 3.6V

TA = -40°C to +105°C

Units

Conditions

Minimum

Typical

Maximum

Resolution

–

bits

External VREF = 3.0V;

RS ← 3.0KΩ

Differential Nonlinearity

(DNL)

-1.0

–

1.0

LSB

External VREF = 3.0V;

RS ← 3.0KΩ

Integral Nonlinearity (INL)

-3.0

–

3.0

LSB

External VREF = 3.0V;

RS ← 3.0KΩ

Uncalibrated DC Offset

Error (single-ended)

-100

TBD

-250

–80

TBD

250

Unbuffered Mode

Unity Gain Buffered

20x Gain Buffered

Note: All values are

uncompensated;

manual offset

compensation is

available

Uncalibrated DC Offset

Error (differential)

-100

TBD

–80

TBD

Unbuffered Mode

Unity Gain Buffered

Note: All values are

uncompensated;

manual offset

compensation is

available

VREF

Internal Reference Voltage

0.9

1.8

1.0

2.0

1.1

2.2

REFSEL=00

REFSEL=01

Single-Shot Conversion

Time

–

5129

–

cycles System clock cycles

Continuous Conversion

Time

–

256

–

cycles System clock cycles

Sampling Rate

System Clock /256

Signal Input Bandwidth

–

KHz

As defined by -3dB

point

Analog Source Impedance

–

500

Ω

In unbuffered mode

In buffered modes

1 Analog source impedance affects the ADC offset voltage (because of pin leakage) and input settling

time.

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