MCP4921 datasheet(2/40 Pages) MICROCHIP

2 / 40 page

MCP4921/4922

DS21897A-page 2

 2004 Microchip Technology Inc.

1.0

ELECTRICAL

CHARACTERISTICS

Absolute Maximum Ratings †

VDD............................................................................................................. 6.5V

All inputs and outputs w.r.t ............. AVSS –0.3V to VDD+0.3V

Current at Input Pins ....................................................±2 mA

Current at Supply Pins ...............................................±50 mA

Current at Output Pins ...............................................±25 mA

Storage temperature .....................................-65°C to +150°C

Ambient temp. with power applied ................-55°C to +125°C

ESD protection on all pins

........... ≥ 4 kV (HBM), ≥ 400V (MM)

Maximum Junction Temperature (TJ) . .........................+150°C

† Notice: Stresses above those listed under “Maximum Rat-

ings” may cause permanent damage to the device. This is a

stress rating only and functional operation of the device at

those or any other conditions above those indicated in the

operational listings of this specification is not implied. Expo-

sure to maximum rating conditions for extended periods may

affect device reliability.

5V AC/DC CHARACTERISTICS

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

Power Requirements

Input Voltage

VDD

2.7

—

5.5

Input Current - MCP4921

Input Current - MCP4922

IDD

—

175

350

700

µA

Input unbuffered, digital inputs

grounded, output unloaded,

code at 0x000

Hardware Shutdown Current

ISHDN

—0.3

µA

Software Shutdown Current

ISHDN_SW

—3.3

µA

Power-on-Reset Threshold

VPOR

—2.0

—

DC Accuracy

Resolution

—

Bits

INL Error

INL

-12

LSB

DNL

-0.75

±0.2

+0.75

LSB

Device is Monotonic

Offset Error

VOS

—

±0.02

% of FSR

Code 0x000h

Offset Error Temperature

Coefficient

VOS/°C

—

0.16

—

ppm/°C

-45°C to 25°C

—

-0.44

—

ppm/°C

+25°C to 85°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

—

VDD – 0.040

Note 1

Code = 2048

VREF = 0.2v p-p, f = 100 Hz and 1 kHz

Input Range - Unbuffered

Mode

VREF

0—

VDD

Input Impedance

RVREF

—

165

—

Ω

Unbuffered Mode

Input Capacitance -

Unbuffered Mode

CVREF

—7

—

Multiplier Mode

-3 dB Bandwidth

fVREF

—

450

—

kHz

VREF = 2.5V ±0.2Vp-p, Unbuffered,

G = 1

fVREF

—

400

—

kHz

VREF = 2.5V ±0.2 Vp-p, Unbuffered,

G = 2

Multiplier Mode -

Total Harmonic Distortion

THDVREF

—-73

—

VREF = 2.5V ±0.2Vp-p,

Frequency = 1 kHz

Note

By design, not production tested.

Too small to quantify.

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