MCP3301-CI-SN Microchip Technology, MCP3301-CI-SN Datasheet

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MCP3301-CI-SN

Manufacturer Part Number
MCP3301-CI-SN
Description
Manufacturer
Microchip Technology
Datasheet
Features
• Full Differential Inputs
• ±1 LSB max DNL
• ±1 LSB max INL (MCP3301-B)
• ±2 LSB max INL (MCP3301-C)
• Single supply operation: 2.7V to 5.5V
• 100 ksps sampling rate with 5V supply voltage
• 50 ksps sampling rate with 2.7V 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
• MXDEV™ Evaluation kit available
Applications
• Remote Sensors
• Battery Operated Systems
• Transducer Interface
Package Types
M
MSOP, PDIP, SOIC
2002 Microchip Technology Inc.
13-Bit Differential Input, Low Power A/D Converter
IN(+)
IN(-)
V
V
REF
SS
1
2
3
4
8
7
6
5
with SPI™ Serial Interface
V
CLK
D
CS/SHDN
DD
OUT
General Description
The Microchip Technology Inc. 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, this 13-bit A/
D converter is specified to have ±1 LSB Differential
Nonlinearity (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 PICmicro
The MCP3301 features a low current design that per-
mits operation with typical standby and active currents
of only 50 nA and 300 µA, respectively. The device
operates over a broad voltage range of 2.7V to 5.5V
and is capable of conversion rates of up to 100 ksps.
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.
®
MCP3301
microcontroller.
DS21700B-page 1

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MCP3301-CI-SN Summary of contents

Page 1

... 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 ...

Page 2

... MCP3301 Functional Block Diagram V REF CDAC Comparator - IN+ Sample & Hold IN- Circuits + Control Logic CS/SHDN CLK DS21700B-page 13-Bit SAR Shift Register D OUT 2002 Microchip Technology Inc. ...

Page 3

... Full differential input SS REF SAMPLE Units Conditions ksps Note 8 ksps 2.7V, V =1.35V DD REF CM CLK periods CLK periods bits LSB MCP3301-B MCP3301-C LSB Monotonic with no missing codes over temperature LSB LSB LSB dB Note 3 dB Note 3 dB Note 3 dB Note 6 dB Note 4 DS21700B-page 3 ...

Page 4

... MCP3301 ELECTRICAL SPECIFICATIONS (CONTINUED) Electrical Characteristics: Unless otherwise noted, all parameters apply at V configuration (Figure 3-4) with fixed common mode voltage of 2.5V. All parameters apply over temperature with T = -40°C to +85°C (Note 7). Conversion speed (f AMB Parameter Symbol Reference Input Voltage Range Current Drain ...

Page 5

... JA — 85 — JA — 163 — JA level. REF . Sign Bit Null Bit MCP3301 = 0V, and V = 5V. Full differential input SS REF SAMPLE Units Conditions V µ 5V, D unloaded , DD REF OUT 2.7V, D unloaded DD REF OUT µ 5.0V DD ° ...

Page 6

... MCP3301 2.0 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 guaranteed. In some graphs or tables, the data presented may be outside the specified operating range (e ...

Page 7

... FIGURE 2-11: (DNL) vs. Sample Rate (V 2.0 V =2. 1.5 SAMPLE 1.0 0.5 0.0 -0.5 -1.0 -1.5 -2 FIGURE 2-12: (DNL) vs. V REF MCP3301 = 0V, SS =2.7V Positive INL Negative INL 0 50 100 150 Temperature (°C) Integral Nonlinearity (INL) = 2.7V). DD =2.7V Positive INL Negative INL Sample Rate (ksps) Differential Nonlinearity = 2.7V). ...

Page 8

... MCP3301 Note: Unless otherwise indicated 100 ksps 17*f SAMPLE CLK 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 2-13: Differential Nonlinearity (DNL) vs. Code (Representative Part). 1.0 0.8 0.6 0.4 Positive DNL 0.2 0.0 -0.2 Negative DNL -0.4 -0.6 -0.8 -1.0 - Temperature (°C) FIGURE 2-14: Differential Nonlinearity (DNL) vs. Temperature = 100 ksps ...

Page 9

... V =V =5V DD REF F = 100 ksps SAMPLE SAMPLE -40 -35 100 FIGURE 2-24: Distortion (SINAD) vs. Input Signal Level. MCP3301 = 0V =5V DD REF F = 100 ksps SAMPLE V =V =2.7V DD REF ksps SAMPLE 0 50 100 150 Temperature (°C) Offset Error vs. =2.7V ...

Page 10

... MCP3301 Note: Unless otherwise indicated 100 ksps 17*f SAMPLE CLK =2. ksps SAMPLE (V) REF FIGURE 2-25: Effective Number of Bits (ENOB) vs REF 100 =2.7V DD REF ksps 50 SAMPLE Input Frequency (kHz) ...

Page 11

... FIGURE 2-34: 100 150 200 0 FIGURE 2-35 =2.7V 30 REF = 50 ksps 100 150 -50 FIGURE 2-36: MCP3301 = 0V 3.5 4 4 REF =5V DD REF V =V =2.7V DD REF 50 100 150 200 Sample Rate (ksps) I vs. Sample Rate. ...

Page 12

... MCP3301 Note: Unless otherwise indicated 100 ksps 17*f SAMPLE CLK 2.5 3 3.5 4 4.5 V (V) DD FIGURE 2-37 DDS DD 100 10 1 0.1 0.01 0.001 -50 - Temperature (°C) FIGURE 2-38: I vs. Temperature. DDS = 100 ksps 4 SAMPLE =2. ksps ...

Page 13

... DUT P-P Power Supply Sensitivity REF DD 1 µF 0.1 µF 0.1 µ IN(+) V V REF DD MCP3301 IN(-) Full Differential Test V =2.5V V =5V REF DD 1 µF 0.1 µF 0.1 µF IN(+) V V REF DD MCP3301 IN(-) V SS Pseudo Differential Test DS21700B-page 13 ...

Page 14

... MCP3301 4.0 PIN DESCRIPTIONS The descriptions of the pins are listed in Table 4-1. TABLE 4-1: PIN FUNCTION TABLE. Name Function V Reference Voltage Input REF IN(+) Positive Analog Input IN(-) Negative Analog Input V Ground SS CS/SHDN Chip Select / Shutdown Input D Serial Data Out OUT CLK Serial Clock V +2.7V to 5.5V Power Supply DD 4 ...

Page 15

... For a 13-bit converter, the theoretical SNR limit is 80.02 dB. Total Harmonic Distortion - Total Harmonic Distortion is (THD) is the ratio of the rms sum of the harmonics to the fundamental, measured at the output of the con- verter. For the MCP3301 defined using the first 9 harmonics, as shown in the following equation: EQUATION ...

Page 16

... Simplified Block Diagram. DS21700B-page 16 6.2 Driving the Analog Input The analog input of the MCP3301 is easily driven either differentially or single-ended. Any signal that is com- mon to the two input channels will be rejected by the common mode rejection of the device. During the charging time of the sample capacitor, a small charging current will be required ...

Page 17

... Analog Input Model. 6.2.1 MAINTAINING MINIMUM CLOCK SPEED When the MCP3301 initiates, charge is stored on the sample capacitor. When the sample period is complete, the device converts one bit for each clock that is received important for the user to note that a slow clock rate will allow charge to bleed off the sample capacitor while the conversion is taking place ...

Page 18

... REF mode voltage. Using a 2.048V reference for the A/D converter, while biasing the input signal at 2.5V solves the problem. This circuit is shown in Figure 6- 0.1 µF MCP606 IN MCP3301 IN IN- 1 µF V REF 1 M 2.048V V V OUT IN 1 µF ...

Page 19

... Providing V devices in a “star” configuration can also reduce noise by eliminating current return paths and associated errors (Figure 6-10). For more information on layout tips when using the MCP3301 or other ADC devices, refer to AN-688 “Layout Tips for 12-Bit A/D Converter Applications” µ ...

Page 20

... MCP3301 7.0 SERIAL COMMUNICATIONS 7.1 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 sign bit will be a zero. If the IN- input is higher, the sign bit will be a ‘ ...

Page 21

... Communicating with the MCP3301 Communication with the device is completed using a standard SPI compatible serial interface. Initiating communication with the MCP3301 begins with the CS going low. If the device was powered up with the CS pin low, it must be brought high and back low to initiate communication. The device will begin to sample the analog input on the first rising edge of CLK after CS goes low ...

Page 22

... For example, Figure 7-4 and Figure 7-5 show how the MCP3301 can be interfaced to a microcontroller with a standard SPI port. Since the MCP3301 always clocks data out on the falling edge of clock, the MCU SPI port must be configured to match this operation. SPI Mode 0,0 (clock idles low) and SPI Mode 1,1 (clock idles high) are both compatible with the MCP3301 ...

Page 23

... Standard marking consists of Microchip part number, year code, week code, traceability code (facility code, mask rev#, and assembly code). For marking beyond this, certain price adders apply. Please check with your Microchip Sales Office. 2002 Microchip Technology Inc. MCP3301 : Example 3301C ...

Page 24

... MCP3301 8-Lead Plastic Micro Small Outline Package (MS) (MSOP (F) Dimension Limits Number of Pins Pitch Overall Height Molded Package Thickness Standoff § Overall Width Molded Package Width Overall Length Foot Length Footprint (Reference) Foot Angle Lead Thickness Lead Width Mold Draft Angle Top ...

Page 25

... A2 .115 .130 .145 A1 .015 E .300 .313 .325 E1 .240 .250 .260 D .360 .373 .385 L .125 .130 .135 c .008 .012 .015 B1 .045 .058 .070 B .014 .018 .022 § eB .310 .370 .430 MCP3301 MILLIMETERS MIN NOM MAX 8 2.54 3.56 3.94 4.32 2.92 3.30 3.68 0.38 7.62 7.94 8.26 6.10 6.35 6.60 9.14 9.46 9.78 3.18 3.30 3.43 0.20 0.29 0.38 1.14 1.46 1.78 0.36 0.46 0.56 7.87 9.40 10. ...

Page 26

... MCP3301 8-Lead Plastic Small Outline (SN) – Narrow, 150 mil (SOIC Dimension Limits Number of Pins Pitch Overall Height Molded Package Thickness Standoff § Overall Width Molded Package Width Overall Length Chamfer Distance Foot Length Foot Angle Lead Thickness Lead Width ...

Page 27

... Conferences for products, Development Systems, technical information and more • Listing of seminars and events 2002 Microchip Technology Inc. MCP3301 Systems Information and Upgrade Hot Line The Systems Information and Upgrade Line provides system users a listing of the latest versions of all of Microchip's development systems software products. ...

Page 28

... Telephone: (_______) _________ - _________ Application (optional): Would you like a reply? Y Device: MCP3301 Questions: 1. What are the best features of this document? 2. How does this document meet your hardware and software development needs you find the organization of this data sheet easy to follow? If not, why? 4 ...

Page 29

... To order or obtain information, e.g., on pricing or delivery, refer to the factory or the listed sales office. PART NO Device Grade Temperature 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 ...

Page 30

... MCP3301 NOTES: DS21700B-page 30 2002 Microchip Technology Inc. ...

Page 31

... Microchip. No licenses are con- veyed, implicitly or otherwise, under any intellectual property rights. 2002 Microchip Technology Inc. MCP3301 Trademarks The Microchip name and logo, the Microchip logo, FilterLab microID, MPLAB, PIC, PICmicro, PICMASTER, ...

Page 32

... Korea Microchip Technology Korea 168-1, Youngbo Bldg. 3 Floor Samsung-Dong, Kangnam-Ku Seoul, Korea 135-882 Tel: 82-2-554-7200 Fax: 82-2-558-5934 Singapore Microchip Technology Singapore Pte Ltd. 200 Middle Road #07-02 Prime Centre Singapore, 188980 Tel: 65-6334-8870 Fax: 65-6334-8850 Taiwan Microchip Technology (Barbados) Inc., Taiwan Branch 11F-3, No ...

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