MCP3202-CI/P Microchip Technology Inc., MCP3202-CI/P Datasheet

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MCP3202-CI/P

Manufacturer Part Number
MCP3202-CI/P
Description
A/D Converter, 2.7V, 12-Bit, SPI I'face, 2-Ch., DIP-8
Manufacturer
Microchip Technology Inc.
Datasheet

Specifications of MCP3202-CI/P

Lead Free Status / Rohs Status
RoHS Compliant part Electrostatic Device

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MCP3202-CI/P
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Features
• 12-bit resolution
• ±1 LSB max DNL
• ±1 LSB max INL (MCP3202-B)
• ±2 LSB max INL (MCP3202-C)
• Analog inputs programmable as single-ended or
• On-chip sample and hold
• SPI serial interface (modes 0,0 and 1,1)
• Single supply operation: 2.7V-5.5V
• 100 ksps max. sampling rate at V
• 50 ksps max. sampling rate at V
• Low power CMOS technology
• 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. MCP3202 is a succes-
sive approximation 12-bit Analog-to-Digital (A/D)
Converter with on-board sample and hold circuitry. The
MCP3202 is programmable to provide a single pseudo-
differential input pair or dual single-ended inputs. Differ-
ential Nonlinearity (DNL) is specified at ±1 LSB, and
Integral Nonlinearity (INL) is offered in ±1 LSB
(MCP3202-B) and ±2 LSB (MCP3202-C) versions.
Communication with the device is done using a simple
serial interface compatible with the SPI protocol. The
device is capable of conversion rates of up to 100 ksps
at 5V and 50 ksps at 2.7V. The MCP3202 device oper-
ates 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 375 A, respec-
tively. The MCP3202 is offered in 8-pin MSOP, PDIP,
TSSOP and 150 mil SOIC packages.
© 2006 Microchip Technology Inc.
pseudo-differential pairs
- 500 nA typical standby current, 5 A max.
- 550 µA max. active current at 5V
2.7V Dual Channel 12-Bit A/D Converter
DD
with SPI Serial Interface
DD
= 2.7V
= 5V
Package Types
Functional Block Diagram
PDIP, MSOP, SOIC, TSSOP
CH0
CH1
CS/SHDN
Channel
Input
CH0
CH1
Mux
V
Sample
MCP3202
Hold
SS
and
CS/SHDN
1
2
3
4
Control Logic
DAC
Comparator
D
8
7
6
5
IN
CLK
V
CLK
D
D
DD
OUT
IN
DS21034D-page 1
/V
12-Bit SAR
Register
REF
V
Shift
D
DD
OUT
V
SS

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MCP3202-CI/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 conversion rates 100 ksps at 5V and 50 ksps at 2.7V. The MCP3202 device oper- ates 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 375 A, respec- tively ...

Page 2

... Conditions clock cycles clock cycles ksps REF ksps 2.7V DD REF bits LSB MCP3202-B LSB MCP3202-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 See Sections 3.1 and 4.1 mV See Sections 3.1 and 4.1 ...

Page 3

... I — 375 550 DD I — 0.5 5 DDS T -40 — + -40 — + -65 — +150 A — 85 — JA — 163 — JA — 206 — JA — — JA MCP3202 = 100 ksps and f = 18*f CLK SAMPLE Units Conditions pF See Figure µ µ OUT 5.0V (Note 25° ...

Page 4

... MCP3202 CS t SUCS CLK MSB OUT FIGURE 1-1: Serial Timing. Load circuit for 1. Test Point D OUT C = 100 pF L Voltage Waveforms for OUT Voltage Waveforms for t CLK OUT FIGURE 1-2: Test Circuits. DS21034D-page NULL BIT MSB OUT Load circuit for t Test Point ...

Page 5

... 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 MCP3202 = 18 25°C SAMPLE A = 2.7V Positive INL Negative INL 100 Sample Rate (ksps) Integral Nonlinearity (INL) vs. Sample ksps SAMPLE Positive INL Negative INL 3 ...

Page 6

... MCP3202 Note: Unless otherwise indicated 1.0 0.8 Positive INL 0.6 0.4 0.2 0.0 Negative INL -0.2 -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 (V 2.0 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0.0 4.5 5.0 2.5 FIGURE 2-18: Offset Error vs. V MCP3202 = 18 25°C SAMPLE ksps 512 1024 1536 2048 2560 3072 3584 4096 Digital Code = 2.7V 2. ksps Positive DNL ...

Page 8

... MCP3202 Note: Unless otherwise indicated 1.0 0 2. ksps SAMPLE 0.4 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. ksps SAMPLE Input Frequency (kHz) FIGURE 2-20: Signal to Noise Ratio (SNR) vs. Input Frequency. 0 -10 ...

Page 9

... Ripple Frequency -10 -20 = 100 ksps -30 = 9.985 kHz -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 MCP3202 = 18 25°C SAMPLE 100 ksps SAMPLE ksps SAMPLE 10 100 Input Frequency (kHz) 10 100 1000 ...

Page 10

... MCP3202 Note: Unless otherwise indicated 500 All points 1.8 MHz except CLK 450 2.5V 900 kHz DD CLK 400 350 300 250 200 150 100 50 0 2.0 2.5 3.0 3.5 4.0 4.5 V (V) DD FIGURE 2-31 500 450 400 350 300 250 ...

Page 11

... SPI-compatible interface. © 2006 Microchip Technology Inc. 4.1 Analog Inputs The MCP3202 device offers the choice of using the analog input channels configured as two single-ended inputs or a single pseudo-differential input. Configura- tion is done as part of the serial command before each conversion begins. When used in the pseudo-differen- ...

Page 12

... MCP3202 V CHx PIN 7 pF Legend VA = signal source R = source impedance SS CHx = input channel pad C = input pin capacitance PIN V = threshold voltage leakage current at the pin LEAKAGE due to various junctions SS = sampling switch R = sampling switch resistor sample/hold capacitance SAMPLE FIGURE 4-1: Analog Input Model. 2.0 1 ...

Page 13

... D line before the start bit. This is IN often done when dealing with microcontroller-based SPI ports that must send 8 bits at a time. Refer to Section 6.1 for more details on using the MCP3202 devices with hardware SPI ports. Config Bits Sgl/ ...

Page 14

... During this time, the bias circuit and the comparator power down while the reference input DATA becomes a high impedance node, leaving the CLK running to clock out LSB first data or zeroes. FIGURE 5-2: Communication with MCP3202 using LSB first format. DS21034D-page 14 t CYC Don’ ...

Page 15

... As an example, Figure 6-1 and Figure 6-2 show how the MCP3202 can be interfaced to a MCU with a hardware SPI port. Figure 6-1 depicts the operation shown in SPI Mode ...

Page 16

... This is illustrated in Figure 6-3 below where an op amp is used to drive the analog input of the MCP3202. This amplifier provides a low impedance output for the con- verter input and a low pass filter, which eliminates unwanted high frequency noise ...

Page 17

... Standard OTP marking consists of Microchip part number, year code, week code, facility code, mask rev#, and assembly code. © 2006 Microchip Technology Inc. MCP3202 Example: e MCP3202 3 I/PNNN YYWW Example: MCP3202 e 3 ISNYYWW NNN Example: 3202I e 3 YWWNNN Example: 3202 IYWW ...

Page 18

... MCP3202 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 Dimension Limits Number of Pins Pitch Top to Seating Plane Molded Package Thickness Base to Seating Plane Shoulder to Shoulder Width ...

Page 19

... L .019 .025 .030 .008 .009 .010 B .013 .017 .020 MCP3202 A2 MILLIMETERS MIN NOM MAX 8 1.27 1.35 1.55 1.75 1.32 1.42 1.55 0.10 0.18 0.25 5.79 6.02 6.20 3.71 3.91 3.99 4.80 4.90 5.00 0.25 0.38 ...

Page 20

... MCP3202 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

... D .114 .118 .122 L .018 .024 .030 0° – 8° c .004 – .008 b .007 – .012 12° REF 12° REF MCP3202 A2 MILLIMETERS* MIN NOM MAX 8 0.65 BSC – – 1.20 0.80 1.00 1.05 0.05 – 0.15 6.40 BSC 4.30 4.40 4.50 2.90 3 ...

Page 22

... MCP3202 NOTES: DS21034D-page 22 © 2006 Microchip Technology Inc. ...

Page 23

... X Device Performance Temperature Grade Range Device: MCP3202: 12-Bit Serial A/d Converter MCP3202T: 12-Bit Serial A/D Converter (Tape and Reel) (SOIC, MSOP and TSSOP package only) Performance Grade ±1 LSB INL (TSSOP not available ±2 LSB INL Temperature Range -40°C to +85°C ...

Page 24

... MCP3202 NOTES: DS21034C-page24 2001 Microchip Technology Inc. ...

Page 25

... APPENDIX A: REVISION HISTORY Revision D (December 2006) This revision includes updates to the packaging dia- grams. © 2006 Microchip Technology Inc. MCP3202 DS21034D-page 25 ...

Page 26

... NOTES: DS21034D-page 26 © 2006 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. © 2006 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 © 2006 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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