MCP4921 datasheet(5/50 Pages) MICROCHIP

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 2010 Microchip Technology Inc.

DS22248A-page 5

MCP4901/4911/4921

ELECTRICAL CHARACTERISTIC WITH EXTENDED TEMPERATURE

Electrical Specifications: Unless otherwise indicated, VDD = 5V, VSS = 0V, VREF = 2.048V, Output Buffer Gain

(G) = 2x, RL = 5 k to GND, CL = 100 pF. Typical values are 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

IDD

—200

—

µA

VREF input is unbuffered, all digi-

tal inputs are grounded, all analog

outputs (VOUT) are unloaded.

Code = 0x000h

Software Shutdown Current ISHDN_SW

—5—

µA

Power-on Reset Threshold

VPOR

—1.85—

DC Accuracy

MCP4901

Resolution

—

Bits

INL Error

INL

±0.25

LSb

DNL

±0.2

LSb

Note 1

MCP4911

Resolution

—

Bits

INL Error

INL

±1

LSb

DNL

±0.2

LSb

Note 1

MCP4921

Resolution

—

Bits

INL Error

INL

±4

LSb

DNL

±0.25

LSb

Note 1

Offset Error

VOS

—

±0.02

—

% of FSR

Code = 0x000h

Offset Error Temperature

Coefficient

VOS/°C

—

-5

—

ppm/°C

+25°C to +125°C

Gain Error

—

-0.10

—

% of FSR

Code = 0xFFFh, not including

offset error

Gain Error Temperature

Coefficient

G/°C

—

-3

—

ppm/°C

Input Amplifier (VREF Input)

Input Range – Buffered

Mode

VREF

—

0.040 to

VDD-

0.040

—V

Note 1

Code = 2048,

VREF = 0.2 Vp-p, f = 100 Hz and

1kHz

Input Range – Unbuffered

Mode

VREF

0—

VDD

Input Impedance

RVREF

—174

—



Unbuffered Mode

Input Capacitance –

Unbuffered Mode

CVREF

—7—

Multiplying Mode

-3 dB Bandwidth

fVREF

—450

—

kHz

VREF = 2.5V ±0.1 Vp-p,

Unbuffered, G = 1x

fVREF

—400

—

kHz

VREF = 2.5V ±0.1 Vp-p,

Unbuffered, G = 2x

Note 1:

Guaranteed monotonic by design over all codes.

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

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