MCP3553 Ver la hoja de datos (PDF) - Microchip Technology

Número de pieza

componentes Descripción

Fabricante

MCP3553

Low-Power, Single-Channel 22-Bit Delta-Sigma ADCs

Microchip Technology 

MCP3550/1/3

DC CHARACTERISTICS (CONTINUED)

Electrical Specifications: Unless otherwise indicated, all parameters apply at -40°C ≤ TA ≤ +85°C, VDD = 2.7V or 5.0V.

VREF = 2.5V. VIN+ = VIN- = VCM = VREF/2. All ppm units use 2*VREF as full-scale range. Unless otherwise noted, specification

applies to entire MCP3550/1/3 family.

Parameters

Sym

Min

Typ

Max

Units

Conditions

Rejection Performance(1,6)

Common Mode DC Rejection

Power Supply DC Rejection

—

-135

—

—

-115

—

dB

VCM range from 0 to VDD

dB

Common Mode 50/60 Hz Rejection

Power Supply 50/60 Hz Rejection

CMRR

PSRR

—

-135

—

—

-85

—

dB

VCM varies from 0V to VDD

dB

MCP3551 only, VDD varies from

4.5V to 5.5V

Power Supply 50/60 Hz Rejection

PSRR

—

-120

—

dB

MCP3550-50 or MCP3550-60 only

at 50 or 60 Hz respectively, VDD

varies from 4.5V to 5.5V

Normal Mode 50 and 60 Hz

Rejection

Normal Mode 50 or 60 Hz

Rejection

Analog Inputs

NMRR

NMRR

—

-85

—

—

-120

—

dB

MCP3551 only,

0 < VCM < VDD,

-VREF < VIN = (VIN + -VIN-) < +VREF

dB

MCP3550-50 or MCP3550-60 only

at 50 or 60 Hz respectively,

0 < VCM < VDD,

-VREF < VIN = (VIN + -VIN-) < +VREF

Differential Input Range

VIN+ − VIN- -VREF

—

+VREF

Absolute/Common Mode Voltages

VSS - 0.3 — VDD + 0.3

Analog Input Sampling Capacitor

—

10

—

V

V

pF

Note 5

Differential Input Impedance

—

2.4

—

MΩ

Shutdown Mode Leakage Current

—

1

—

nA

VIN+ = VIN- = VDD; CS = VDD

(Note 3)

Reference Input

Voltage Range

Reference Input Sampling

Capacitor

0.1

—

VDD

—

15

—

V

pF

Note 5

Reference Input Impedance

—

2.4

—

MΩ Note 4

Shutdown Mode Reference

Leakage Current

—

1

—

nA

VIN+ = VIN- = VSS; CS = VDD

Power Requirements

Power Supply Voltage Range

MCP3550-50, MCP3551 Supply

Current

MCP3550-60, MCP3553 Supply

Current

Supply Current, Sleep Mode

Supply Current, Shutdown Mode

Serial Interface

VDD

IDD

IDD

IDDSL

IDDS

2.7

—

5.5

—

120

170

—

100

—

—

140

185

—

120

—

—

10

—

—

1

V

µA

VDD = 5V

µA

VDD = 2.7V

µA

VDD = 5V

µA

VDD = 2.7V

µA

µA

CS = SCK = VDD

Voltage Input High (CS, SCK)

VIH

0.7 VDD —

—

V

Voltage Input Low (CS, SCK)

VIL

—

—

0.4

V

Voltage Output High (SDO/RDY)

VOH

VDD - 0.5 —

—

V

VOH = 1 mA, VDD = 5.0V

Note 1: This parameter is established by characterization and not 100% tested.

2: INL is the difference between the endpoints line and the measured code at the center of the quantization band.

3: This current is due to the leakage current and the current due to the offset voltage between VIN+ and VIN-.

4: Input impedance is inversely proportional to clock frequency; typical values are for the MCP3550/1 device. VREF = 5V.

5: Characterized by design, but not tested.

6: Rejection performance depends on internal oscillator accuracy; see Section 4.0 “Device Overview” for more informa-

tion on oscillator and digital filter design. MCP3550/1 device rejection specifications characterized from 49 to 61 Hz.

© 2007 Microchip Technology Inc.

DS21950D-page 3

Share Link: