Table 21. 8-Bit Mode A/D Characteristics (Using Above Operating Conditions) (1)

Parameter

Typical (2,3)

Min

Max

Units (4)

Notes

Resolution

256

8

256

8

Levels

Bits

Absolute Error

0

± 1

LSBs

Full-scale Error

± 0.5

LSBs

Zero Offset Error

± 0.5

LSBs

Non-Linearity

0

± 1

LSBs

Differential Non-Linearity

– 0.5

+ 0.5

LSBs

Channel-to-Channel Matching

0

± 1

LSBs

Repeatability

± 0.25

0

LSBs

(2)

Temperature Coefficients:

Offset

Fullscale

Differential Non-Linearity

0.003

LSB/C

(2)

Off Isolation

– 60

dB

(2,5,6)

Feedthrough

– 60

dB

(2,5)

V

Power Supply Rejection

– 60

dB

(2,5)

Input Resistance

750

1.2 K

Ω

(8)

DC Input Leakage

± 1

– 1.5

1.5

µA

Voltage on Analog Input Pin

ANGND –0.5

V

(7)

Sampling Capacitor

3

pF

NOTES:

1. All conversions performed with processor in IDLE mode.

2. These values are expected for most parts at 25°C but are not tested or guaranteed.

3. These values are not tested in production and are based on theoretical estimates and/or laboratory test.

4. An “LSB”, as used here, has a value of approximately 5 mV

5.DC to 100 KHz

6.Multiplexer Break-Before-Make Guaranteed.

7.Applying voltages beyond these specifications will degrade the accuracy of other channels being converted.

8.Resistance from device pin, through internal MUX, to sample capacitor.

Production Datasheet

29

87C196CB - Automotive

CC