MCP33151-05-ESLASHMS datasheet(2/55 Pages) MICROCHIP

2 / 55 page

MCP33151/41-XX

DS20006220A-page 2

 2019 Microchip Technology Inc.

Typical Application Diagram

Description

The MCP33151/41-10 and MCP33151/41-05 are

single-ended, 14-bit and 12-bit, single-channel 1 Msps

and 500 kSPS ADC family devices, respectively,

featuring

low-power

consumption

and

high

performance, using a successive approximation

The device operates with an external voltage reference

(VREF) from AVDD to 5.1V, which supports a wide range

of input full-scale range from 0V to VREF. The reference

voltage setting is independent of the analog supply

voltage (AVDD) and is higher than AVDD. The

conversion output is available through an easy-to-use

simple SPI-compatible 3-wire interface.

The device requires a 1.8V analog supply voltage

(AVDD) and a 1.7V to 5.5V digital I/O interface supply

voltage (DVIO). The wide digital I/O interface supply

(DVIO) range (1.7V-5.5V) allows the device to interface

with most host devices (Master) available in the current

industry, such as the PIC32 microcontrollers, without

using external voltage level shifters.

Once all supply voltages are connected, the device will

power-up and perform an automatic calibration to

minimize offset, gain and linearity errors. The

automatic calibration takes place approximately 40 ms

following power-up, and it is necessary to ensure that

all power supplies are fully settled and stable after this

time. See Section 4.1.1, Power-Up Sequence and

Auto-Calibration for more details. The device

performance stays stable across the specified

temperature range. However, when extreme changes

in the operating environment, such as in the reference

voltage, are made with respect to the initial conditions

(e.g. the reference voltage did not fully settle during the

initial power-up sequence), the user may send a

recalibrate command anytime to initiate another self-

calibration to restore optimum performance.

When the initial power-up sequence is completed, the

device enters a low-current input acquisition mode,

where sampling capacitors are connected to the input

pins. This mode is called Standby.

During Standby mode, most of the internal analog

circuitry is shut down in order to reduce current

consumption.

Typically,

the

device

consumes

approximately

1.5 µA

during

Standby.

new

conversion is started on the rising edge of CNVST.

When the conversion is complete and the host lowers

CNVST, the output data is presented on SDO, and the

device enters Standby mode to begin acquiring the

next input sample. The user can clock out the ADC

output data using the SPI-compatible serial clock

during Standby.

The ADC system clock is generated by an internal on-

chip clock, therefore the conversion is performed

independent of the SPI serial clock (SCLK).

This device can be used for various high-speed and

high-accuracy

analog-to-digital

data

conversion

applications, where design simplicity, low power, and

no output latency are needed.

The device is AEC-Q100 qualified for automotive

applications

and

operates

over

the

extended

temperature range of -40°C to +125°C. The available

package options are Pb-free TDFN-10 and MSOP-10.

MCP331x1-XX

AIN+

AIN-

GND

SDO

SCLK

CNVST

SDI

VREF

AVDD

DVIO

Host Device

(PIC32MZ)

AVDD to 5.1V

1.8V

1.8V to 5.5V

0V to VREF

15Ω

2.2nF

GND Reference of

Analog Input

MCP33151-05-E/MS Datasheet(PDF) 2 Page - Microchip Technology

MCP33151-05-E/MS Datasheet(HTML) 2 Page - Microchip Technology

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55

Datasheet Download

Link URL