MCP3201-BI/P Microchip Technology Inc., MCP3201-BI/P Datasheet

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MCP3201-BI/P

Manufacturer Part Number
MCP3201-BI/P
Description
A/D Converter, 12-Bit, 2.7V, SPI, Single Channel, PDIP-8
Manufacturer
Microchip Technology Inc.
Datasheet

Specifications of MCP3201-BI/P

Lead Free Status / Rohs Status
RoHS Compliant part Electrostatic Device

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Features
• 12-bit resolution
• ±1 LSB max DNL
• ±1 LSB max INL (MCP3201-B)
• ±2 LSB max INL (MCP3201-C)
• On-chip sample and hold
• SPI
• Single supply operation: 2.7V - 5.5V
• 100ksps max. sampling rate at V
• 50ksps max. sampling rate at V
• Low power CMOS technology
• 500 nA typical standby current, 2 µA max.
• 400 µA max. active current at 5V
• Industrial temp range: -40°C to +85°C
• 8-pin MSOP, PDIP, SOIC and TSSOP packages
Applications
• Sensor Interface
• Process Control
• Data Acquisition
• Battery Operated Systems
Description
The Microchip Technology Inc. MCP3201 is a succes-
sive approximation 12-bit Analog-to-Digital (A/D) Con-
verter with on-board sample and hold circuitry. The
device provides a single pseudo-differential input. Dif-
ferential Nonlinearity (DNL) is specified at ±1 LSB, and
Integral Nonlinearity (INL) is offered in ±1 LSB
(MCP3201-B) and ±2 LSB (MCP3201-C) versions.
Communication with the device is done using a simple
serial interface compatible with the SPI protocol. The
device is capable of sample rates of up to 100 ksps at
a clock rate of 1.6 MHz. The MCP3201 operates over
a broad voltage range (2.7V - 5.5V). Low current
design permits operation with typical standby and
active currents of only 500 nA and 300 µA, respec-
tively. The device is offered in 8-pin MSOP, PDIP,
TSSOP and 150 mil SOIC packages.
© 2007 Microchip Technology Inc.
2.7V 12-Bit A/D Converter with SPI
serial interface (modes 0,0 and 1,1)
DD
DD
= 2.7V
= 5V
Package Types
Functional Block Diagram
IN+
IN-
MSOP, PDIP, SOIC, TSSOP
V
Sample
IN+
IN–
V
Hold
and
REF
SS
MCP3201
1
2
3
4
Serial Interface
CS/SHDN
Control Logic
DAC
V
REF
Comparator
CLK
8
7
6
5
V
CLK
D
CS/SHDN
12-Bit SAR
DD
OUT
DS21290D-page 1
Register
V
D
Shift
DD
OUT
V
SS

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MCP3201-BI/P Summary of contents

Page 1

... Communication with the device is done using a simple serial interface compatible with the SPI protocol. The device is capable of sample rates 100 ksps at a clock rate of 1.6 MHz. The MCP3201 operates over a broad voltage range (2.7V - 5.5V). Low current design permits operation with typical standby and active currents of only 500 nA and 300 µ ...

Page 2

... CLK SAMPLE Units Conditions clock cycles clock cycles ksps REF ksps 2.7V DD REF bits LSB MCP3201-B LSB MCP3201-C LSB No missing codes over temperature LSB LSB 0.1V to 4.9V@1 kHz 0.1V to 4.9V@1 kHz 0.1V to 4.9V@1 kHz IN V Note 2 µA µ µ ...

Page 3

... DDS T -40 — + -40 — + -65 — +150 A q — 85 — — 163 — — 206 — — 124 — JA level. REF MCP3201 = 100 ksps, and f = 16*f CLK SAMPLE Units Conditions pF See Figure µ µ OUT 5.0V (Note 25° ...

Page 4

... MCP3201 CS t SUCS CLK HI-Z D OUT FIGURE 1-1: Serial Timing. Load circuit for 1.4V 3 kΩ Test Point D OUT Voltage Waveforms for OUT t R Voltage Waveforms for t CLK OUT FIGURE 1-2: Test Circuits. DS21290D-page MSB OUT NULL BIT Load circuit for t ...

Page 5

... REF (V = 2.7V). DD 1 0.6 SAMPLE 0.4 0.2 0.0 -0.2 -0.4 -0.6 -0.8 -1.0 3584 4096 0 FIGURE 2-6: (Representative Part, V MCP3201 = 16 25°C CLK SAMPLE 2.7V REF Positive INL Negative INL 100 Sample Rate (ksps) Integral Nonlinearity (INL) vs. Sample ksps ...

Page 6

... MCP3201 Note: Unless otherwise indicated 1.0 0.8 Positive INL 0.6 0.4 0.2 0.0 -0.2 Negative INL -0.4 -0.6 -0.8 -1.0 -50 - Temperature (°C) FIGURE 2-7: Integral Nonlinearity Temperature. 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 ...

Page 7

... FIGURE 2-17: Differential Nonlinearity (DNL) vs. Temperature ( FIGURE 2-18: Offset Error vs. V MCP3201 = 16 25°C CLK SAMPLE 2.7V REF = 50 ksps 512 1024 1536 2048 2560 3072 3584 4096 Digital Code = 2.7V 2.7V REF = 50 ksps Positive DNL Negative DNL ...

Page 8

... MCP3201 Note: Unless otherwise indicated 1.0 0.8 0 2.7V DD REF ksps 0.4 SAMPLE 0.2 0.0 -0.2 -0.4 -0 -0.8 F SAMPLE -1.0 -50 - Temperature (°C) FIGURE 2-19: Gain Error vs. Temperature. 100 SAMPLE 2.7V DD REF ksps SAMPLE Input Frequency (kHz) FIGURE 2-20: Signal to Noise Ratio (SNR) vs. Input Frequency ...

Page 9

... Ripple Frequency -10 REF -20 = 100 ksps -30 = 9.985kHz -40 -50 -60 -70 -80 -90 -100 -110 -120 -130 40000 50000 0 FIGURE 2-30: Frequency Spectrum of 1 kHz input (Representative Part, V MCP3201 = 16 25°C CLK SAMPLE 100 ksps SAMPLE ksps SAMPLE 10 100 Input Frequency (kHz) 10 100 1000 ...

Page 10

... MCP3201 Note: Unless otherwise indicated 500 REF DD 450 All points 1.6 MHz, except CLK 400 2.5V 800 kHz REF DD CLK 350 300 250 200 150 100 50 0 2.0 2.5 3.0 3.5 4.0 4.5 V (V) DD FIGURE 2-31 400 350 300 DD REF ...

Page 11

... 100 ksps, f REF SS SAMPLE 2 1.6 CLK 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0.0 -50 5.0 5.5 6.0 FIGURE 2-39: Analog Input Leakage Current vs. Temperature. 75 100 MCP3201 = 16 25°C CLK SAMPLE REF = 1.6 MHz - 100 Temperature (°C) DS21290D-page 11 ...

Page 12

... Conversion rates of 100 ksps are possible on the MCP3201. See Section 6.2 for informa- tion on minimum clock rates. Communication with the device is done using a 3-wire SPI-compatible interface. ...

Page 13

... Input Resistance (Ohms) FIGURE 4-2: Maximum Clock Frequency vs. Input Resistance ( maintain less than a 0.1 LSB S deviation in INL from nominal conditions. © 2007 Microchip Technology Inc 0. LEAKAGE V = 0.6V T ± REF 10000 MCP3201 Sampling Switch kΩ SAMPLE = DAC capacitance = DS21290D-page 13 ...

Page 14

... SERIAL COMMUNICATIONS Communication with the device is done using a stan- dard SPI-compatible serial interface. Initiating commu- nication with the MCP3201 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 commu- nication. The device will begin to sample the analog input on the first rising edge after CS goes low ...

Page 15

... Figure 6-2 show how the MCP3201 can be interfaced to a microcontroller with a standard SPI port. Since the MCP3201 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 MCP3201 ...

Page 16

... This is illustrated in Figure 6-3 where an op amp is used to drive the analog input of the MCP3201. This amplifier provides a low impedance source for the converter input and a low pass filter, which eliminates unwanted high frequency noise ...

Page 17

... In the event the full Microchip part number cannot be marked on one line, it will be carried over to the next line, thus limiting the number of available characters for customer-specific information. © 2007 Microchip Technology Inc. MCP3201 Example: MCP3201 e I/PNNN 3 0725 Example: MCP3201 e ISN 3 0725 NNN Example: 3201I e 3 725NNN Example: ...

Page 18

... MCP3201 8-Lead Plastic Dual In-Line (P) – 300 mil Body [PDIP] Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging N NOTE Number of Pins Pitch Top to Seating Plane Molded Package Thickness Base to Seating Plane Shoulder to Shoulder Width ...

Page 19

... A – A2 1. 0.25 L 0.40 L1 φ 0° c 0.17 b 0.31 α 5° β 5° MCP3201 α c β NOM MAX 8 1.27 BSC – 1.75 – – – 0.25 6.00 BSC 3.90 BSC 4.90 BSC – 0.50 – 1.27 1.04 REF – 8° – ...

Page 20

... MCP3201 8-Lead Plastic Micro Small Outline Package (MS) [MSOP] Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging D N NOTE Number of Pins Pitch Overall Height Molded Package Thickness Standoff Overall Width Molded Package Width Overall Length ...

Page 21

... BSC A – A2 0.80 1.00 A1 0.05 E 6.40 BSC E1 4.30 4.40 D 2.90 3.00 L 0.45 0.60 L1 1.00 REF φ 0° c 0.09 b 0.19 MCP3201 φ L MAX 8 – 1.20 1.05 – 0.15 4.50 3.10 0.75 – 8° – 0.20 – 0.30 Microchip Technology Drawing C04-086B DS21290D-page 21 ...

Page 22

... MCP3201 NOTES: DS21290D-page 22 © 2007 Microchip Technology Inc. ...

Page 23

... APPENDIX A: REVISION HISTORY Revision D (January 2007) This revision includes updates to the packaging diagrams. © 2007 Microchip Technology Inc. MCP3201 DS21290D-page 23 ...

Page 24

... MCP3201 NOTES: DS21290D-page 24 © 2007 Microchip Technology Inc. ...

Page 25

... To order or obtain information, e.g., on pricing or delivery, refer to the factory or the listed sales office. PART NO. X /XX Device Temperature Package Range Device: MCP3201: 12-Bit A/D Converter w/SPI Interface MCP3201T: 12-Bit A/D Converter w/SPI Interface (Tape and Reel) (SOIC and TSSOP only) Temperature Range -40°C to +85°C Package Plastic Micro Small Outline (MSOP), 8-lead ...

Page 26

... MCP3201 NOTES: DS21290D-page 26 © 2007 Microchip Technology Inc. ...

Page 27

... Microchip from any and all damages, claims, suits, or expenses resulting from such use. No licenses are conveyed, implicitly or otherwise, under any Microchip intellectual property rights. © 2007 Microchip Technology Inc. Trademarks The Microchip name and logo, the Microchip logo, Accuron, dsPIC, K ...

Page 28

... Fax: 886-3-572-6459 Taiwan - Kaohsiung Tel: 886-7-536-4818 Fax: 886-7-536-4803 Taiwan - Taipei Tel: 886-2-2500-6610 Fax: 886-2-2508-0102 Thailand - Bangkok Tel: 66-2-694-1351 Fax: 66-2-694-1350 © 2007 Microchip Technology Inc. EUROPE Austria - Wels Tel: 43-7242-2244-39 Fax: 43-7242-2244-393 Denmark - Copenhagen Tel: 45-4450-2828 Fax: 45-4485-2829 France - Paris Tel: 33-1-69-53-63-20 ...

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