MCP3301T MICROCHIP [Microchip Technology], MCP3301T Datasheet

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MCP3301T

Manufacturer Part Number
MCP3301T
Description
13-Bit Differential Input, Low Power A/D Converter with SPI Serial Interface
Manufacturer
MICROCHIP [Microchip Technology]
Datasheet

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Company
Part Number
Manufacturer
Quantity
Price
Part Number:
MCP3301T-BI/MS
Manufacturer:
MICROCHIP
Quantity:
1 000
Part Number:
MCP3301T-CI/SN
Manufacturer:
MCP
Quantity:
20 000
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:
Applications
• Remote Sensors
• Battery-operated Systems
• Transducer Interface
Functional Block Diagram
 2011 Microchip Technology Inc.
IN+
IN-
MXSIGDM) compatible
13-Bit Differential Input, Low Power A/D Converter
Sample
Circuits
& Hold
CS/SHDN
Control Logic
V
-
+
REF
CDAC
Comparator
CLK
with SPI Serial Interface
13-Bit SAR
Register
V
D
Shift
DD
OUT
V
SS
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.
Package Types
MSOP, PDIP, SOIC
MCP3301
V
IN(+)
IN(-)
REF
V
SS
1
2
3
4
8
7
6
5
V
CLK
D
CS/SHDN
DS21700D-page 1
DD
OUT
®

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MCP3301T Summary of contents

Page 1

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 ...

Page 2

MCP3301 NOTES: DS21700D-page 2  2011 Microchip Technology Inc. ...

Page 3

ELECTRICAL CHARACTERISTICS Maximum Ratings* V ........................................................................ 7.0V DD All inputs and outputs w.r.t. V .....-0. Storage temperature .......................... -65°C to +150°C Ambient temp. with power applied ..... -65°C to +125°C Maximum Junction Temperature ....................... 150°C ESD ...

Page 4

MCP3301 ELECTRICAL SPECIFICATIONS (CONTINUED) Electrical Characteristics: Unless otherwise noted, all parameters apply at V input configuration (Figure 1-5) with fixed common mode voltage of 2.5V. All parameters apply over temperature with T = -40°C to +85°C (Note 7). Conversion speed ...

Page 5

ELECTRICAL SPECIFICATIONS (CONTINUED) Electrical Characteristics: Unless otherwise noted, all parameters apply at V input configuration (Figure 1-5) with fixed common mode voltage of 2.5V. All parameters apply over temperature with T = -40°C to +85°C (Note 7). Conversion speed ( ...

Page 6

MCP3301 1.1 Test Circuits 1.4V  Test Point D OUT C = 100 pF L FIGURE 1-2: Load circuit for t Test Point DIS V /2  OUT 100 pF t ...

Page 7

TYPICAL PERFORMANCE CURVES Note: The graphs and tables provided following this note are a statistical summary based on a limited number of samples and are provided for informational purposes only. The performance characteristics listed herein are not tested or ...

Page 8

MCP3301 Note: Unless otherwise indicated 17 25°C. CLK SAMPLE A 1 0.8 0.6 0.4 0.2 0 -0.2 -0.4 -0.6 -0.8 -1 -4096 -3072 -2048 -1024 0 1024 Code FIGURE 2-7: Differential Nonlinearity (DNL) ...

Page 9

Note: Unless otherwise indicated 17 25°C. CLK SAMPLE A 0 -10 -20 -30 -40 -50 -60 -70 -70 -80 -90 -100 1 10 Input Frequency (kHz) FIGURE 2-13: Total Harmonic Distortion (THD) vs. ...

Page 10

MCP3301 Note: Unless otherwise indicated 17 25°C. CLK SAMPLE A 0 -10 -20 -30 -40 -50 -60 -70 -80 -90 -100 -110 -120 -130 -140 -150 0 5000 10000 15000 Frequency (Hz) FIGURE ...

Page 11

Note: Unless otherwise indicated 17 25°C. CLK SAMPLE A 120 100 2.5 3 3.5 4 4.5 V (V) DD FIGURE 2-25 REF DD ...

Page 12

MCP3301 Note: Unless otherwise indicated 17 25°C. CLK SAMPLE A 1 0.8 0.6 0.4 0.2 0 -0.2 -0 -0.6 -0 Temperature (°C) FIGURE 2-31: Negative Gain Error ...

Page 13

PIN DESCRIPTIONS The descriptions of the pins are listed in TABLE 3-1: PIN FUNCTION TABLE MSOP, PDIP, Name SOIC 1 V REF 2 IN(+) 3 IN(-) CS/SHDN 6 D OUT 7 CLK ...

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MCP3301 NOTES: DS21700D-page 14  2011 Microchip Technology Inc. ...

Page 15

DEFINITION OF TERMS Bipolar Operation - This applies to either a differential or single-ended input configuration, where both positive and negative codes are output from the A/D converter. Full bipolar range includes all 8192 codes. For bipolar operation on ...

Page 16

MCP3301 NOTES: DS21700D-page 16  2011 Microchip Technology Inc. ...

Page 17

APPLICATIONS INFORMATION 5.1 Conversion Description The MCP3301MCP3301 A/D converter employs a con- ventional SAR architecture. With this architecture, the potential between the IN+ and IN- inputs are simultaneously sampled and stored with the internal sample circuits for 1.5 clock ...

Page 18

MCP3301 V CHx PIN Legend VA = signal source = source impedance R S CHx = input channel pad = input pin capacitance C PIN = threshold voltage leakage current at ...

Page 19

Using an external operational amplifier on the input allows for gain and buffers the input signal from the input to the ADC, allowing for a higher source impedance. This circuit is shown in Figure 10 k 0.1 µF MCP6022 1 ...

Page 20

MCP3301 5.5 Buffering/Filtering the Analog Inputs Inaccurate conversion results may occur if the signal source for the A/D converter is not a low impedance source. Buffering the input will solve the impedance issue also recommended that an analog ...

Page 21

SERIAL COMMUNICATIONS 6.1 Output Code Format The output code format is a binary two’s complement scheme with a leading sign bit that indicates the sign of the output. If the IN+ input is higher than the IN- input, the ...

Page 22

MCP3301 0 + 1111 1111 1111 (+4095 1111 1111 1110 (+4094 0000 0000 0011 (+ 0000 0000 0010 (+ 0000 0000 0001 (+ 0000 0000 0000 (0) IN+ < IN- ...

Page 23

Communicating with the MCP3301 Communication with the device is completed using a standard SPI compatible serial interface. Initiating com- munication with the MCP3301 begins with the CS going low. If the device was powered up with the CS pin ...

Page 24

MCP3301 6.3 Using the MCP3301 with Microcontroller (MCU) SPI Ports With most microcontroller SPI ports required to clock out eight bits at a time. Using a hardware SPI port with the MCP3301 is very easy because each conver- ...

Page 25

NOTES:  2011 Microchip Technology Inc. MCP3301 DS21700D-page 25 ...

Page 26

MCP3301 7.0 PACKAGING INFORMATION 7.1 Package Marking Information 8-Lead MSOP XXXXXX YWWNNN 8-Lead PDIP (300 mil) XXXXXX XXXXNNN YYWW 8-Lead SOIC (150 mil) XXXXXXXX XXXXYYWW NNN Legend: XX...X Customer-specific information Y Year code (last digit of calendar year) YY Year ...

Page 27

D N NOTE 1RWHV  2011 Microchip Technology Inc MCP3301 φ L DS21700D-page 27 ...

Page 28

MCP3301 Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging DS21700D-page 28  2011 Microchip Technology Inc. ...

Page 29

PLO %RG\ >3',3@ 1RWH N NOTE 1RWHV  2011 Microchip Technology Inc MCP3301 c DS21700D-page 29 ...

Page 30

MCP3301 Note: DS21700D-page 30  2011 Microchip Technology Inc. ...

Page 31

Note:  2011 Microchip Technology Inc. MCP3301 DS21700D-page 31 ...

Page 32

MCP3301 /HDG 3ODVWLF 6PDOO 2XWOLQH 61 ± 1DUURZ  PP %RG\ >62,&@ 1RWH DS21700D-page 32  2011 Microchip Technology Inc. ...

Page 33

APPENDIX A: REVISION HISTORY Revision D (April 2011) The following is the list of modifications: 1. Updated the content to illustrate that the devices now have tested specifications in the 4.5V to 5.5V supply range. 2. Removed figures 2-4 to ...

Page 34

MCP3301 NOTES: DS21700D-page 34  2011 Microchip Technology Inc. ...

Page 35

... To order or obtain information, e.g., on pricing or delivery, contact the local Microchip sales office. PART NO Device Grade Temperature Package Range Device: MCP3301: 13-Bit Serial A/D Converter MCP3301T: 13-Bit Serial A/D Converter (Tape and Reel) Grade ±1 LSB INL C = ±2 LSB INL Temperature Range -40°C to +85°C Package Plastic MSOP, 8-lead P ...

Page 36

NOTES:  2011 Microchip Technology Inc. MCP3301 DS21700D-page 36 ...

Page 37

Note the following details of the code protection feature on Microchip devices: • Microchip products meet the specification contained in their particular Microchip Data Sheet. • Microchip believes that its family of products is one of the most secure families ...

Page 38

Worldwide Sales and Service AMERICAS ASIA/PACIFIC Corporate Office Asia Pacific Office 2355 West Chandler Blvd. Suites 3707-14, 37th Floor Chandler, AZ 85224-6199 Tower 6, The Gateway Tel: 480-792-7200 Harbour City, Kowloon Fax: 480-792-7277 Hong Kong Technical Support: Tel: 852-2401-1200 http://www.microchip.com/ ...

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