MCP3461RT-ESLASHST datasheet(6/118 Pages) MICROCHIP

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MCP3461/2/4R

DS20006404C-page 6

 2020-2021 Microchip Technology Inc.

ELECTRICAL CHARACTERISTICS

Electrical Specifications: Unless otherwise indicated, all parameters apply at AVDD = 2.7V to 3.6V, DVDD = 1.8V to AVDD +0.1V,

MCLK = 4.9152 MHz, VREF =AVDD, ADC_MODE[1:0] = 11. All other register map bits to their default conditions,

TA = -40°C to +125°C, VIN = -0.5 dBFS at 50 Hz.

Parameters

Sym.

Min.

Typ.

Max.

Units

Conditions

Supply Requirements

Analog Operating Voltage

AVDD

2.7

—

3.6

Digital Operating Voltage

DVDD

1.8

—

AVDD +0.1

DVDD ≤ 3.6V

Analog Operating Current

AIDD

—

0.56

0.81

BOOST[1:0] = 00, 0.5x

—

0.69

0.96

BOOST[1:0] = 01, 0.66x

—

0.93

1.3

BOOST[1:0] = 10, 1x

—

1.65

2.2

BOOST[1:0] = 11, 2x

Analog Operating Current

AIDD

—

0.96

BOOST[1:0] = 00, 0.5x,

VREF = 2.4V internal

—

1.2

BOOST[1:0] = 01, 0.66x,

VREF = 2.4V internal

—

1.6

BOOST[1:0] = 10, 1x,

VREF = 2.4V internal

—

2.5

BOOST[1:0] = 11, 2x,

VREF = 2.4V internal

Digital Operating Current

DIDD

—

0.25

0.37

Note 8

Analog Partial Shutdown

Current

AIDDS_PS

—

µA

CONFIG0 = 0x00

Digital Partial Shutdown

Current

DIDDS_PS

—

µA

CONFIG0 = 0x00

Analog Full-Shutdown

Current

AIDDS_FS

—

0.4

µA

CONFIG0 = 0x00 with

Full-Shutdown Fast-CMD

Digital Full-Shutdown

Current

DIDDS_FS

—

µA

CONFIG0 = 0x00 with

Full-Shutdown Fast-CMD

Power-on Reset (POR)

Threshold Voltage

VPOR_A

—

1.75

—

For analog circuits

VPOR_D

—

1.2

—

For digital circuits

POR Hysteresis

VPOR_HYS

—

150

—

POR Reset Time

tPOR

—1

—

µs

Note 1:

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

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

REFIN- must be connected to ground for single-ended measurements.

Full-Scale Range (FSR) = 2 x VREF/Gain.

This input impedance is due to the internal input sampling capacitor and frequency. This impedance is measured between

the two input pins of the channel selected with the input multiplexer.

Applies to all analog gains. Offset and gain errors depend on analog gain settings. See Section 2.0 “Typical

Performance Curves”.

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

DIDD is measured while no transfer is present on the SPI bus.

An external buffer is recommended for external use.

10: Start-up time is the reaction time to the SPI command.

11: Settling time depends on bypass caps on REFIN+/OUT pin.

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