MCP4821 datasheet(3/36 Pages) MICROCHIP

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DS21953A-page 3

MCP4821/MCP4822

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

—15

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

5V AC/DC CHARACTERISTICS (CONTINUED)

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, 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.

3V AC/DC CHARACTERISTICS

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

Power Requirements

Input Voltage

VDD

2.7

—

5.5

Input Current - MCP4821

Input Current - MCP4822

IDD

—

300

415

400

750

µA

Digital inputs grounded, Output

unloaded, code = 0x000

Hardware Shutdown Current

ISHDN

—0.25

µA

Software Shutdown Current

ISHDN_SW

—2

µA

Power-On Reset threshold

VPOR

—2.0

—

DC Accuracy

Resolution

—

Bits

INL Error

INL

-12

±3

LSb

DNL (Note 1)

DNL

-0.75

±0.3

0.75

LSb

Device is monotonic

Offset Error

VOS

-1

±0.02

% of FSR

Code 0x000h

Offset Error Temperature

Coefficient

VOS/°C

—

0.5

—

ppm/°C

-45°C to +25°C

—

-0.77

—

ppm/°C

+25°C to +85°C

Gain Error

-2

-0.15

% of FSR

Code 0xFFFh, not including off-

set error

Gain Error Temperature

Coefficient

ΔG/°C

—

-3

—

ppm/°C

Note

By design, not production tested.

Too small to quantify.

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