Microchip MCP33131-10 Bedienungsanleitung

Microchip Nicht kategorisiert MCP33131-10

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 2018 Microchip Technology Inc. DS20006122A-page 1

MCP33131/21/11-XX

Features

• Sample Rate (Throughput):

- MCP33131/21/11-10: 1 Msps

- MCP33131/21/11-05: 500 kSPS

• 16/14/12-Bit Resolution with No Missing Codes

• No Latency Output

• Wide Operating Voltage Range:

- Analog Supply Voltage (AVDD): 1.8V

- Digital Input/Output Interface Voltage (DV

IO):

1.7V - 5.5V

- External Reference (VREF): 2.5V - 5.1V

• Pseudo-Differential Input Operation with

Single-Ended Configuration:

- Input Full-Scale Range: 0V to +V

REF

• Ultra Low Current Consumption (typical):

- During Input Acquisition (Standby): ~ 0.8 µA

- During Conversion:

MCP331x1-10: ~1.6 mA

MCP331x1-05: ~1.4 mA

• SPI-Compatible Serial Communication:

- SCLK Clock Rate: up to 100 MHz

• ADC Self-Calibration for Offset, Gain, and

Linearity Errors:

- During Power-Up (automatic)

- On-Demand via user’s command during

normal operation

• AEC-Q100 Qualified:

- Temperature Grade 1: -40°C to +125°C

• Package Options: MSOP-10 and TDFN-10

Typical Applications

• High-Precision Data Acquisition

• Medical Instruments

• Test Equipment

• Electric Vehicle Battery Management Systems

• Motor Control Applications

• Switch-Mode Power Supply Applications

• Battery-Powered Equipment

System Design Supports

The MCP331x1-XX Evaluation Kit demonstrates the

performance of the MCP331x1-XX SAR ADC family

devices. The evaluation kit includes: (a) MCP331x1-XX

Evaluation Board, (b) PIC32MZ EF Curiosity Board for

data collection, and (c) SAR ADC Utility PC GUI.

Contact Microchip Technology Inc. for the evaluation

tools and the PIC32 MCU firmware example codes.

Package Types

MSOP-10

AIN+

AVDD

AIN-

SDI

SCLK

7 SDO

DVIO

VREF

TDFN-10

AIN+

AV DD

AIN-

SDI

SCLK

7SDO

DVIO

VREF

5 6

GND CNVST

Top View

MCP331x1-XX Device Offering (Note 1):

Part Number Resolution Sample

Rate Input Type Input Range

Performance (Typical)

SNR

(dBFS)

SFDR

(dB)

THD

(dB)

INL

(LSB)

DNL

(LSB)

MCP33131-10 16-bit 1 Msps Single-Ended 0V to 5.1V 86.7 98.9 -97.4 ±2.2 ±0.9

MCP33121-10 14-bit 1 Msps Single-Ended 0V to 5.1V 83.5 98.8 -97.2 ±0.55 ±0.25

MCP33111-10 12-bit 1 Msps Single-Ended 0V to 5.1V 73.8 95.9 -93.7 ±0.12 ±0.06

MCP33131-05 16-bit 500 kSPS Single-Ended 86.70V to 5.1V 98.9 -97.4 ±2.2 ±0.9

MCP33121-05 14-bit 500 kSPS Single-Ended 83.50V to 5.1V 98.8 -97.2 ±0.55 ±0.25

MCP33111-05 12-bit 500 kSPS Single-Ended 73.80V to 5.1V 95.9 -93.7 ±0.12 ±0.06

Note 1: SNR, SFDR, and THD are measured with f IN = 10 kHz, VIN = -1 dBFS, VREF = 5.1V.

1 Msps/500 kSPS 16/14/12-Bit Single-Ended Input SAR ADC

MCP33131/21/11-XX

DS20006122A-page 2  2018 Microchip Technology Inc.

Application Diagram

Description

The MCP33131/MCP33121/MCP33111-10 and

MCP33131/MCP33121/MCP33111-05 are

single-ended 16, 14, 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 a 2.5V to 5.1V external

reference (VREF), 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.

When the device is first powered-up, it performs a

self-calibration to minimize offset, gain and linearity

errors. 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 was not fully

settled 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, most of the internal analog circuitry is

shutdown in order to reduce current consumption.

Typically, the device consumes less than 1 µA during

Standby. A 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 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.

1.7 nF

22Ω

(0V to VREF)

AIN+

AIN-

VREF AVDD DV IO

SDI

SCLK

SDO

CNVST

2.5V to 5.1V 1.8V 1.7V to 5.5V

GND

(PIC32MZ)

Host Device

MCP331x1-XX

Analog Input

Ground Reference of

Analog Input

 2018 Microchip Technology Inc. DS20006122A-page 3

MCP33131/MCP33121/MCP33111-XX

1.0 KEY ELECTRICAL

CHARACTERISTICS

1.1 Absolute Maximum Ratings†

External Analog Supply Voltage (AVDD) ................... -0.3V to 2.0V

External Digital Supply Voltage (DVIO) ..................... -0.3V to 5.8V

External Reference Voltage (VREF) .......................... -0.3V to 5.8V

Analog Inputs w.r.t GND .................... .......... –0.3V to V

REF+0.3V

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

Current at Output and Supply Pins .................................±250 mA

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

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

ESD protection on all pins .... ≤2kV HBM, ≤2kV CDM, ≤200V MM

†Notice: Stresses above those listed under “Absolute

Maximum Ratings” 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. Exposure to maximum rating conditions for extended

periods may affect device reliability.

1.2 Electrical Specifications

TABLE 1-1: KEY ELECTRICAL CHARACTERISTICS

Electrical Specifications: Unless otherwise specified, all parameters apply for T A= -40°C to +125°C, AVDD = 1.8V, DVIO = 3.3V, VREF = 5V,

GND = 0V, Analog Input (V IN) = -1 dBFS sine wave, fIN = 10 kHz, CLOAD_SDO = 20 pF.

• MCP331x1-10: Sample Rate (f S) = 1 Msps, SPI Clock Input (SCLK) = 60 MHz.

• MCP331x1-05: Sample Rate (f S) = 500 kSPS, SPI Clock Input (SCLK) = 30 MHz.

Parameters Sym. Min. Typ. Max. Units Conditions

Power Supply Requirements

Analog Supply Voltage Range AV DD 1.7 1.8 1.9 V (Note 3)

Digital Input/Output Interface Voltage

Range

DVIO 1.7 — 5.5 V (Note 3)

Analog Supply Current at AV DD pin:

During Conversion

During Standby

DDAN

IDDAN_STBY

—

1.6

1.4

0.8

2.4

2.0

—

µA

fs = 1 Msps (MCP331x1-10)

fs = 500 kSPS (MCP331x1-05)

During input acquisition (tACQ)

Digital Supply Current At DV DD

pin:

During Output Data Reading

During Standby

IIO_DATA

IIO_STBY

—

290

200

—

A

fs = 1 Msps (MCP331x1-10)

fs = 500 kSPS (MCP331x1-05)

During input acquisition (tACQ)

External Reference Voltage Input

Reference Voltage

(Note 2) (Note 3),

VREF 2.5

2.7

5.1

V T-40°C ≤A≤ 85°C

85°C < TA≤ 125°C

Reference Load Current at V REF pin:

During Conversion

During Standby

IREF

IREF_STBY

—

450

220

240

600

360

—

µA

fs = 1 Msps (MCP331x1-10)

fs = 500 kSPS (MCP331x1-05)

During input acquisition (tACQ)

Total Power Consumption (Including AV DD, DVIO, VREF pins)

MCP331x1-10

at 1 Msps

at 500 ksps

at 100 ksps

During Standby

PDISS_TOTAL

PDISS_STBY

—

6.2

3.1

0.6

2.6

—

W

Averaged power for tACQ + tCNV

During input acquisition (tACQ)

MCP331x1-05

at 500 ksps

at 100 ksps

During Standby

PDISS_TOTAL

PDISS_STBY

—

4.2

0.8

2.6

—

W

Averaged power for tACQ + tCNV

During input acquisition (tACQ)

Note 1: This parameter is ensured by design and not 100% tested.

2: This parameter is ensured by characterization and not 100% tested.

3: Decoupling capacitor is recommended on the following pins:

(a) AVDD pin: 1 F ceramic capacitor, (b) DV IO pin: 0.1 F ceramic capacitor, (c) VREF pin: 10 F tantalum capacitor.

4: PSRR (dB) = -20 log (D VOUT/AVDD), where DVOUT = change in conversion result.

5: ENOB = (SINAD - 1.76)/6.02

Produktspezifikationen

Marke:	Microchip
Kategorie:	Nicht kategorisiert
Modell:	MCP33131-10

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