Microchip Technology MCP4728EV Fiche De Données

MCP4728

DS22187E-page 4

Power-on Reset
Threshold Voltage

POR

—

2.2

—

All circuits, including EEPROM, are
ready to operate.

Power-Up Ramp Rate

RAMP

—

V/s

Note 2

Note 4

DC Accuracy

Resolution

—

Bits

Code Change: 000h to FFFh

Integral Nonlinearity (INL)
Error

INL —

±2

±13

LSB

Note 5

DNL Error

DNL

-0.75

±0.2

±0.75

LSB

Note 5

Offset Error

—

5 20

Code = 000h
See

Figure 2-24

Offset Error Drift

ΔV

/°C —

±0.16 —

ppm/°C

-45°C

+25°C

—

±0.44

—

ppm/°C +25°C to +125°C

Gain Error

-1.25

0.4

+1.25

FSR

Code = FFFh,
Offset error is not included.
Typical value is at room
temperature
See

Figure 2-25

Gain Error Drift

ΔG

/°C —

-3 —

ppm/°C

Internal Voltage Reference (V

REF

), (

Note 3

)

Internal Voltage Reference

REF

2.007

2.048

2.089

Temperature Coefficient

ΔV

REF

/°C

—

125

—

ppm/°C -40 to 0°C

—

0.25

—

LSB/°C

—

ppm/°C

0 to +125°C

—

0.09

—

LSB/°C

Reference Output Noise

NREF

—

290 —

µV

p-p

Code = FFFh,

0.1 – 10 Hz, G

= 1

Output Noise Density

NREF

—

1.2

—

Code = FFFh, 1 kHz, G

= 1

—

1.0

—

Code = FFFh, 10 kHz, G

= 1

1/f Corner Frequency

CORNER

—

400

—

ELECTRICAL CHARACTERISTICS (CONTINUED)

Electrical Specifications: Unless otherwise indicated, all parameters apply at V

= +2.7V to 5.5V, V

= 0V,

= 5 k

Ω, C

= 100 pF, G

= 1, T

= -40°C to +125°C. Typical values are at +25°C, V

= V

, V

= V

SS.

Parameter

Symbol

Min

Typical

Max

Units

Conditions

Note 1:

All digital input pins (SDA, SCL, LDAC) are tied to “High”, Output pins are unloaded, code = 0 x 000.

The power-up ramp rate measures the rise of V

over time.

This parameter is ensured by design and not 100% tested.

This parameter is ensured by characterization and not 100% tested.

Test code range: 100 - 4000 codes, V

REF

= V

, V

= 5.5V.

Time delay to settle to a new reference when switching from external to internal reference or vice versa.

This parameter is indirectly tested by Offset and Gain error testing.

Within 1/2 LSB of the final value when code changes from 1/4 of to 3/4 of full scale.

This time delay is measured from the falling edge of ACK pulse in I

C command to the beginning of V

OUT

This time delay is not included in the output settling time specification.

μV