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MCP3201

2.7V 12-Bit A/D Converter with SPI® Serial Interface

Microchip Technology 

MCP3201

1.0 ELECTRICAL

CHARACTERISTICS

1.1 Maximum Ratings*

VDD......................................................................... 7.0V

All inputs and outputs w.r.t. VSS ...... -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 protection on all pins ...................................> 4kV

*Notice: Stresses above those listed under “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 peri-

ods may affect device reliability.

PIN FUNCTION TABLE

NAME

VDD

VSS

IN+

IN-

CLK

DOUT

CS/SHDN

VREF

FUNCTION

+2.7V to 5.5V Power Supply

Ground

Positive Analog Input

Negative Analog Input

Serial Clock

Serial Data Out

Chip select/Shutdown Input

Reference Voltage Input

ELECTRICAL CHARACTERISTICS

All parameters apply at VDD = 5V, VSS = 0V, VREF = 5V, TAMB = -40°C to +85°C, fSAMPLE = 100ksps

and fCLK = 16*fSAMPLE unless otherwise noted.

PARAMETER

SYMBOL MIN. TYP. MAX. UNITS

CONDITIONS

Conversion Rate

Conversion Time

tCONV

12

clock

cycles

Analog Input Sample Time

tSAMPLE

1.5

clock

cycles

Throughput Rate

DC Accuracy

fSAMPLE

100

ksps VDD = VREF = 5V

50

ksps VDD = VREF = 2.7V

Resolution

12

bits

Integral Nonlinearity

INL

±0.75

±1

±1

±2

LSB MCP3201-B

LSB MCP3201-C

Differential Nonlinearity

DNL

±0.5

±1

LSB No missing codes over tem-

perature

Offset Error

±1.25

±3

LSB

Gain Error

±1.25

±5

LSB

Dynamic Performance

Total Harmonic Distortion

Signal to Noise and Distortion

(SINAD)

-82

dB VIN = 0.1V to 4.9V@1kHz

72

dB VIN = 0.1V to 4.9V@1kHz

Spurious Free Dynamic Range

Reference Input

86

dB VIN = 0.1V to 4.9V@1kHz

Voltage Range

Current Drain

Analog Inputs

0.25

VDD

100

150

.001

3

V Note 2

µA

µA CS = VDD = 5V

Input Voltage Range (IN+)

Input Voltage Range (IN-)

Leakage Current

Switch Resistance

Sample Capacitor

RSS

CSAMPLE

IN-

VSS-100

0.001

1K

20

VREF+IN-

VSS+100

±1

V

mV

µA

Ω See Figure 4-1

pF See Figure 4-1

DS21290B-page 2

Preliminary

© 1999 Microchip Technology Inc.

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