MCP3913 datasheet(3/82 Pages) MICROCHIP

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 2013 Microchip Technology Inc.

DS20005227A-page 3

MCP3913

1.0

ELECTRICAL

CHARACTERISTICS

Absolute Maximum Ratings †

DD ..................................................................... -0.3V to 4.0V

Digital inputs and outputs w.r.t. AGND................--0.3V to 4.0V

Analog input w.r.t. AGND..................................... ....-2V to +2V

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) ................. 1.5 kV, 300V

ESD on all other pins (HBM,MM) ...........................2 kV, 300V

† 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 condi-

tions, above those indicated in the operational listings

of this specification, is not implied. Exposure to maxi-

mum rating conditions for extended periods may affect

device reliability.

1.1

Electrical Specifications

TABLE 1-1:

ANALOG SPECIFICATIONS

Electrical Specifications:

Unless otherwise indicated, all parameters apply at AVDD = DVDD = 3V, MCLK = 4 MHz;

PRE<1:0> = 00

; OSR = 256; GAIN = 1; VREFEXT = 0, CLKEXT = 1, DITHER<1:0> = 11; BOOST<1:0> = 10, VCM =0V;

TA = -40°C to +125°C;VIN = -0.5 dBFS @ 50/60 Hz on all channels.

Characteristic

Sym.

Min.

Typ.

Max.

Units

Conditions

ADC Performance

Resolution

(No missing codes)

—

bits

OSR = 256 or greater

Sampling Frequency

fS(DMCLK)

—

MHz

For maximum condition,

BOOST<1:0> = 11

Output Data Rate

fD(DRCLK)

—

125

ksps

For maximum condition,

BOOST<1:0> = 11,

OSR = 32

Analog Input Absolute

Voltage on CHn+/- pins,

n between 0 and 5

CHn+/-

-1

—

All analog input channels,

measured to AGND

Analog Input

Leakage Current

IIN

—

+/-1

—

RESET<5:0> = 111111,

MCLK running continuously

Differential Input

Voltage Range

(CHn+-CHn-) -600/GAIN — +600/GAIN

VREF =1.2V,

proportional to VREF

Offset Error

VOS

-1

0.2

Note 5

Offset Error Drift

—

0.5

—

µV/°C

Gain Error

-4

—

Note 5

Gain Error Drift

—

ppm/°C

Note 1:

Dynamic Performance specified at -0.5 dB below the maximum differential input value,

VIN =1.2 VPP = 424 mVRMS @ 50/60 Hz, VREF = 1.2V. See Section 4.0 “Terminology And Formulas” for definition.

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

For these operating currents, the following configuration bit settings apply: SHUTDOWN<5:0> = 000000

RESET<5:0> = 000000

, VREFEXT = 0, CLKEXT = 0.

For these operating currents, the following configuration bit settings apply: SHUTDOWN<5:0> = 111111

VREFEXT = 1, CLKEXT = 1.

Measured on one channel versus all others channels. The average of crosstalk performance over all channels

(see Figure 2-32 for individual channel performance).

Applies to all gains. Offset and gain errors depend on PGA gain setting, see typical performance curves for typical

performance.

Outside of this range, ADC accuracy is not specified. An extended input range of +/-2V can be applied continuously to

the part with no damage.

For proper operation and for optimizing ADC accuracy, AMCLK should be limited to the maximum frequency defined in

Table 5-2, as a function of the BOOST and PGA setting chosen. MCLK can take larger values as long as the prescaler

settings (PRE<1:0>) limit AMCLK = MCLK/PRESCALE in the defined range in Table 5-2.

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