MCP3901A2T-ISLASHSS datasheet(3/60 Pages) MICROCHIP

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DS22192A-page 3

MCP3901

1.0

ELECTRICAL

CHARACTERISTICS

Absolute Maximum Ratings †

DD ................................................................................... 7.0V

Digital inputs and outputs w.r.t. AGND........ -0.6V to VDD +0.6V

Analog input w.r.t. AGND..................................... ....-6V to +6V

VREF input w.r.t. AGND ............................... -0.6V to VDD +0.6V

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

Ambient temp. with power applied ................-65°C to +125°C

Soldering temperature of leads (10 seconds) ............. +300°C

ESD on the analog inputs (HBM,MM) ................. 7.0 kV, 400V

ESD on all other pins (HBM,MM) ........................ 7.0 kV, 400V

† 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 indi-

cated in the operational listings of this specification is not

implied. Exposure to maximum rating conditions for extended

periods may affect device reliability.

ELECTRICAL CHARACTERISTICS

Electrical Specifications: Unless otherwise indicated, AVDD = 4.5 to 5.5V, DVDD = 2.7 to 5.5 V; -40°C < TA <+85°C,

MCLK = 4 MHz; PRESCALE = 1; OSR = 64; GAIN = 1; Dithering OFF; VIN = -0.5 dBFS = 353 mVRMS @ 50/60 Hz.

Parameters

Symbol

Min

Typical

Max

Units

Conditions

Internal Voltage Reference

Tolerance

VREF

-2%

2.37

+2%

VREFEXT = 0

Temperature Coefficient

TCREF

—

ppm/°C

VREFEXT = 0

Output Impedance

ZOUTREF

7—

AVDD=5V,

VREFEXT = 0

Voltage Reference Input

Input Capacitance

—

Differential Input Voltage Range

(VREF+ - VREF-)

VREF

2.2

—

2.6

VREF = (VREF+ - VREF-),

VREFEXT = 1

Absolute Voltage on REFIN+ pin

VREF+

1.9

—

2.9

VREFEXT = 1

Absolute Voltage on REFIN- pin

VREF-

-0.3

—

0.3

ADC Performance

Resolution (No Missing Codes)

—

bits

OSR = 256

(See Table 5-3)

Sampling Frequency

See Table 4-2

kHz

fS = DMCLK = MCLK /

(4 x PRESCALE)

Note 1:

This specification implies that the ADC output is valid over this entire differential range and that there is no

distortion or instability across this input range. Dynamic Performance specified at -0.5 dB below the

maximum signal range, VIN = -0.5 dBFS @ 50/60 Hz = 353 mVRMS, VREF = 2.4V.

See terminology section for definition.

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

For these operating currents, the following bit settings apply: SHUTDOWN<1:0>=00, RESET<1:0>=00,

VREFEXT=0, CLKEXT=0.

For these operating currents, the following configuration bit settings apply: SHUTDOWN<1:0>=11,

VREFEXT=1, CLKEXT=1.

Applies to all gains. Offset error is dependant on PGA gain setting, see Figure 2-19 for typical values.

Outside of this range, the ADC accuracy is not specified. An extended input range of ±6V can be applied

continuously to the part with no risk for damage.

For proper operation and to keep ADC accuracy, AMCLK should always be in the range of 1 to 5 MHz with

BOOST bits off. With BOOST bits on, AMCLK should be in the range of 1 to 8.192 MHz.

AMCLK = MCLK/PRESCALE. When using a crystal, CLKEXT bit should be equal to 0.

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