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MCP3301

13-Bit Differential Input, Low Power A/D Converter

with SPI Serial Interface

Features

•

Full Differential Inputs

±1 LSB max DNL

±1 LSB max INL (MCP3301-B)

±2 LSB max INL (MCP3301-C)

Single supply operation: 4.5V to 5.5V

100 ksps sampling rate with 5V supply voltage

50 nA typical standby current, 1 µA max

450 µA max active current at 5V

Industrial temp range: -40°C to +85°C

8-pin MSOP, PDIP, and SOIC packages

Mixed Signal PICtail™ Demo Board (P/N:

MXSIGDM) compatible

General Description

The MCP3301 13-bit A/D converter features full

differential inputs and low power consumption in a

small package that is ideal for battery-powered

systems and remote data acquisition applications.

Incorporating a successive approximation architecture

with on-board sample and hold circuitry, the 13-bit A/D

converter is specified to have ±1 LSB Differential Non-

linearity (DNL) and ±1 LSB Integral Nonlinearity (INL)

for B-grade devices and ±2 LSB for C-grade devices.

The industry-standard SPI serial interface enables 13-

bit A/D converter capability to be added to any PIC

®

microcontroller.

The MCP3301 features a low current design that

permits operation with typical standby and active

currents of only 50 nA and 300 µA, respectively. The

device is capable of conversion rates of up to 100 ksps

with tested specifications over a 4.5V to 5.5V supply

range. The reference voltage can be varied from

400 mV to 5V, yielding input-referred resolution

between 98 µV and 1.22 mV.

The MCP3301 is available in 8-pin PDIP, 150 mil SOIC,

and MSOP packages. The full differential inputs of this

device enable a wide variety of signals to be used in

applications such as remote data acquisition, portable

instrumentation, and battery-operated applications.

Applications

• Remote Sensors

• Battery-operated Systems

• Transducer Interface

Functional Block Diagram

V

REF

V

DD

V

SS

Package Types

CDAC

IN+

IN-

Sample

& Hold

Circuits

MSOP, PDIP, SOIC

V

REF

IN(+)

IN(-)

V

SS

1

2

3

4

8

7

6

5

V

DD

CLK

D

OUT

CS/SHDN

-

+

Comparator

13-Bit SAR

MCP3301

Control Logic

Shift

Register

CS/SHDN

CLK

D

OUT



2011 Microchip Technology Inc.

DS21700D-page 1

MCP3301

NOTES:

DS21700D-page 2



2011 Microchip Technology Inc.

MCP3301

1.0

ELECTRICAL

CHARACTERISTICS

*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 periods

may affect device reliability.

Maximum Ratings*

V

DD

........................................................................ 7.0V

All inputs and outputs w.r.t. V

SS

.....-0.3V to V

DD

+0.3V

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

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

Maximum Junction Temperature ....................... 150°C

ESD protection on all pins (HBM)



4 kV

ELECTRICAL SPECIFICATIONS

Electrical Characteristics:

Unless otherwise noted, all parameters apply at V

DD

= 5V, V

SS

= 0V, and V

REF

= 5V. Full differential

input configuration (Figure

1-5)

with fixed common mode voltage of 2.5V. All parameters apply over temperature with

T

AMB

= -40°C to +85°C

(Note

7).

Conversion speed (

F

SAMPLE)

is 100 ksps with

F

CLK

= 17*

F

SAMPLE

Parameter

Conversion Rate

Maximum Sampling Frequency

Conversion Time

Acquisition Time

DC Accuracy

Resolution

Integral Nonlinearity

Differential Nonlinearity

Positive Gain Error

Negative Gain Error

Offset Error

Dynamic Performance

Total Harmonic Distortion

Signal to Noise and Distortion

Spurious Free Dynamic Range

Common-Mode Rejection

Power Supply Rejection

Note 1:

2:

3:

4:

5:

6:

7:

8:

9:

THD

SINAD

SFDR

CMRR

PSR

—

-91

78

92

79

74

—

dB

Note 3

Note 6

Note 4

INL

DNL

—

-3

12 data bits + sign

±0.5

±1

±0.5

-0.75

-0.5

+3

±1

±2

±1

+2

+6

bits

LSB

MCP3301-B

MCP3301-C

Monotonic with no missing codes over

temperature

Symbol

Min

Typ

Max

Units

Conditions

F

SAMPLE

t

CONV

t

ACQ

—

13

1.5

100

ksps

CLK

periods

CLK

periods

See

F

CLK

specifications

(Note

8)

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

See characterization graphs that relate converter performance to V

REF

level.

V

IN

= 0.1V to 4.9V @ 1 kHz.

V

DD

= 5V DC ±500 mV

P-P

@ 1 kHz, see test circuit

Figure 1-4.

Maximum clock frequency specification must be met.

V

REF

= 400 mV, V

IN

= 0.1V to 4.9V @ 1 kHz

MSOP devices are only specified at 25°C and +85°C.

For slow sample rates, see

Section 5.2.1 “Maintaining Minimum Clock Speed”

for limitations on clock frequency.

4.5V - 5.5V is the supply voltage range for specified performance



2011 Microchip Technology Inc.

DS21700D-page 3

MCP3301

ELECTRICAL SPECIFICATIONS (CONTINUED)

Electrical Characteristics:

Unless otherwise noted, all parameters apply at V

DD

= 5V, V

SS

= 0V, and V

REF

= 5V. Full differential

input configuration (Figure

1-5)

with fixed common mode voltage of 2.5V. All parameters apply over temperature with

T

AMB

= -40°C to +85°C

(Note

7).

Conversion speed (

F

SAMPLE)

is 100 ksps with

F

CLK

= 17*

F

SAMPLE

Parameter

Reference Input

Voltage Range

Current Drain

Analog Inputs

Full-Scale Input Span

Absolute Input Voltage

IN(+)-IN(-)

IN(+)

IN(-)

Leakage Current

Switch Resistance

Sample Capacitor

Digital Input/Output

Data Coding Format

High Level Input Voltage

Low Level Input Voltage

High Level Output Voltage

Low Level Output Voltage

Input Leakage Current

Output Leakage Current

Pin Capacitance

Timing Specifications

Clock Frequency

(Note 8)

Clock High Time

Clock Low Time

CS Fall To First Rising CLK Edge

CLK Fall To Output Data Valid

CLK Fall To Output Enable

CS Rise To Output Disable

CS Disable Time

D

OUT

Rise Time

D

OUT

Fall Time

Note 1:

2:

3:

4:

5:

6:

7:

8:

9:

V

IH

V

IL

V

OH

V

OL

I

LI

I

LO

C

IN

, C

OUT

Binary Two’s Complement

0.7 V

DD

—

4.1

—

-10

—

0.3 V

DD

—

0.4

10

V

µA

pF

I

OH

= -1 mA, V

DD

= 4.5V

I

OL

= 1 mA, V

DD

= 4.5V

V

IN

= V

SS

or V

DD

V

OUT

= V

SS

or V

DD

T

AMB

= 25°C, f = 1 MHz,

Note 1

V

DD

= 5V,

F

SAMPLE

= 100 ksps

Note 5

R

S

C

SAMPLE

-V

REF

-0.3

—

0.001

1

25

V

REF

V

DD

+ 0.3

V

DD

+ 0.3

±1

—

V

µA

k

pF

See

Figure 5-3

See

Figure 5-3

0.4

—

100

0.001

V

DD

150

3

V

µA

Note 2

CS = V

DD

= 5V

Symbol

Min

Typ

Max

Units

Conditions

F

CLK

t

HI

t

LO

t

SUCS

t

DO

t

EN

t

DIS

t

CSH

t

R

t

F

0.085

275

100

—

580

—

1.7

—

125

200

125

200

100

—

100

MHz

ns

V

DD

= 5V, see

Figure 1-2

V

DD

= 2.7V, see

Figure 1-2

V

DD

= 5V, see

Figure 1-2

V

DD

= 2.7V, see

Figure 1-2

See test circuits,

Figure 1-2;

Note 1

See test circuits,

Figure 1-2;

Note 1

See test circuits,

Figure 1-2;

Note 1

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

See characterization graphs that relate converter performance to V

REF

level.

V

IN

= 0.1V to 4.9V @ 1 kHz.

V

DD

= 5V DC ±500 mV

P-P

@ 1 kHz, see test circuit

Figure 1-4.

Maximum clock frequency specification must be met.

V

REF

= 400 mV, V

IN

= 0.1V to 4.9V @ 1 kHz

MSOP devices are only specified at 25°C and +85°C.

For slow sample rates, see

Section 5.2.1 “Maintaining Minimum Clock Speed”

for limitations on clock frequency.

4.5V - 5.5V is the supply voltage range for specified performance

DS21700D-page 4



2011 Microchip Technology Inc.

MCP3301

ELECTRICAL SPECIFICATIONS (CONTINUED)

Electrical Characteristics:

Unless otherwise noted, all parameters apply at V

DD

= 5V, V

SS

= 0V, and V

REF

= 5V. Full differential

input configuration (Figure

1-5)

with fixed common mode voltage of 2.5V. All parameters apply over temperature with

T

AMB

= -40°C to +85°C

(Note

7).

Conversion speed (

F

SAMPLE)

is 100 ksps with

F

CLK

= 17*

F

SAMPLE

Parameter

Power Requirements

Operating Voltage

Operating Current

Standby Current

Temperature Ranges

Specified Temperature Range

Operating Temperature Range

Storage Temperature Range

Thermal Package Resistance

Thermal Resistance, 8L-MSOP

Thermal Resistance, 8L-PDIP

Thermal Resistance, 8L-SOIC

Note 1:

2:

3:

4:

5:

6:

7:

8:

9:



JA



JA



JA

—

206

85

163

—

°C/W

T

A

T

A

T

A

-40

-65

—

+85

+150

°C

V

DD

I

DD

I

DDS

4.5

—

300

200

0.05

5.5

450

—

1

V

µA

Note 9

V

DD ,

V

REF

= 5V, D

OUT

unloaded

V

DD

, V

REF

= 2.7V, D

OUT

unloaded

CS = V

DD

= 5.0V

Symbol

Min

Typ

Max

Units

Conditions

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

See characterization graphs that relate converter performance to V

REF

level.

V

IN

= 0.1V to 4.9V @ 1 kHz.

V

DD

= 5V DC ±500 mV

P-P

@ 1 kHz, see test circuit

Figure 1-4.

Maximum clock frequency specification must be met.

V

REF

= 400 mV, V

IN

= 0.1V to 4.9V @ 1 kHz

MSOP devices are only specified at 25°C and +85°C.

For slow sample rates, see

Section 5.2.1 “Maintaining Minimum Clock Speed”

for limitations on clock frequency.

4.5V - 5.5V is the supply voltage range for specified performance

.

t

CSH

CS

t

SUCS

t

HI

CLK

t

EN

HI-Z

t

DO

t

R

Sign Bit

t

DIS

t

F

LSB

HI-Z

t

LO

D

OUT

Null Bit

FIGURE 1-1:

Timing Parameters.



2011 Microchip Technology Inc.

DS21700D-page 5

MCP3301

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