COP688EB datasheet(9/75 Pages) NSC

9 / 75 page

CAN Comparator DC and AC Characteristics

4.8V

≤ V

CC ≤ 5.2V, −40˚C ≤ TA ≤ +125˚C

Parameter

Conditions

Min

Typ

Max

Units

Differential Input Voltage

±25

Input Offset Voltage

1.5V < V

IN < VCC −1.5V

±10

Input Common Mode

1.5

CC −1.5

Voltage Range

Input Hysteresis

A/D Converter Specifications

(4.5V

≤ V

CC ≤ 5.5V) (VSS − 0.050V) ≤ Any Input ≤ (VCC + 0.050V)

Parameter

Conditions

Min

Typ

Max

Units

Resolution

Bits

Absolute Accuracy

REF =VCC

±2

LSB

Non-Linearity

±1

LSB

Deviation from the Best Straight Line

Differential Non-Linearity

±1

LSB

Common Mode Input Range (Note 24)

GND

DC Common Mode Error

±0.5

LSB

Off Channel Leakage Current

2.0

µA

On Channel Leakage Current

2.0

µA

A/D Clock Frequency (Note 23)

0.1

1.67

MHz

Conversion Time (Note 22)

A/D Clock Cycles

Internal Reference Resistance Turn-On Time (Note 25)

µs

Note 22: Conversion Time includes sample and hold time.

Note 23: See Prescaler description.

Note 24: For VIN(−) > =VIN(+) the digital output code will be 0000 0000. Two on-chip doides are ties to each analog input. The diodes will forward conduct for analog

input voltages below ground or above the VCC supply. Be careful, during testing at low VCC levels (4.5V), as high level analog inputs (5V) can cause this input diode

to conduct — especially at elevated temperatures, and cause errors for analog inputs near full-scale. The spec allows 50 mV forward bias of either diode. This means

that as long as the analog VIN does not exceed the supply voltage by more than 50 mV, the output code will be correct. To achieve an absolute 0 VDC to 5 VDC input

voltage range will therefore require a minimum supply voltage of 4.950 VDC over temperature variations, initial tolerance and loading.

Note 25: Time for internal reference resistance to turn on after coming out of Halt or Idle Mode.

DS012837-4

FIGURE 3. MICROWIRE/PLUS Timing Diagram

COP688EB Datasheet(PDF) 9 Page - National Semiconductor (TI)

COP688EB Datasheet(HTML) 9 Page - National Semiconductor (TI)

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75

Datasheet Download

Link URL