MCP4822-ESLASHMS datasheet(4/36 Pages) MICROCHIP

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MCP4821/MCP4822

DS21953A-page 4

Internal Voltage Reference (VREF)

Nominal Reference Voltage

VREF

2.008

2.048

2.088

VOUTA when G = 1x and

Code = 0xFFFh

Temperature Coefficient

(Note 1)

ΔV

REF/°C

—

125

325

ppm/°C

-40°C to 0°C

—

0.25

0.65

LSb/°C

-40°C to 0°C

—

160

ppm/°C

0°C to +85°C

—

0.09

0.32

LSb/°C

0°C to +85°C

Output Noise (VREF Noise)

ENREF

(0.1-10 Hz)

—

290

—

µVp-p

Code = 0xFFFh, G = 1

Output Noise Density

eNREF

(1 kHz)

—1.2

—

µV/

√Hz

Code = 0xFFFh, G = 1

eNREF

(10 kHz)

—1.0

—

µV/

√Hz

Code = 0xFFFh, G = 1

1/f Corner Frequency

fCORNER

—

400

—

Output Amplifier

Output Swing

VOUT

—

0.010 to

VDD – 0.040

—

Accuracy is better than 1 LSb for

VOUT = 10 mV to (VDD – 40 mV)

Phase Margin

—

Slew Rate

—

0.55

—

V/µs

Short Circuit Current

ISC

—14

Settling Time

tSETTLING

—

4.5

—

µs

Within 1/2 LSb of final value from

1/4 to 3/4 full-scale range

Dynamic Performance

DAC-to-DAC Crosstalk

—

<10

—

nV-s

Note 2

Major Code Transition Glitch

—

nV-s

1 LSb change around major carry

(0111...1111 to

1000...0000

)

Digital Feedthrough

—

<10

—

nV-s

Note 2

Analog Crosstalk

—

<10

—

nV-s

Note 2

3V AC/DC CHARACTERISTICS (CONTINUED)

Electrical Specifications: Unless otherwise indicated, VDD = 3V, AVSS = 0V, VREF = 2.048V external, output buffer gain (G) = 1x,

RL = 5 kΩ to GND, CL = 100 pF, TA = -40 to +85°C. Typical values at 25°C

Parameters

Sym

Min

Typ

Max

Units

Conditions

Note

By design, not production tested.

Too small to quantify.

5V EXTENDED TEMPERATURE SPECIFICATIONS

Electrical Specifications: Unless otherwise indicated, VDD = 5V, AVSS = 0V, VREF = 2.048V, output buffer gain (G) = 2x,

RL = 5 kΩ to GND, CL = 100 pF. Typical values at +125°C by characterization or simulation.

Parameters

Sym

Min

Typ

Max

Units

Conditions

Power Requirements

Input Voltage

VDD

2.7

—

5.5

Input Current - MCP4821

Input Current - MCP4822

IDD

—

350

440

—

µA

Digital inputs grounded, Output

unloaded, code = 0x000

Hardware Shutdown Current

ISHDN

—1.5

—

µA

Software Shutdown Current

ISHDN_SW

—5

—µA

Power-On Reset threshold

VPOR

—1.85

—

DC Accuracy

Resolution

—

Bits

INL Error

INL

—

±4

—

LSb

Note

By design, not production tested.

Too small to quantify.

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