MCP3221A5T-I/OT Microchip Technology, MCP3221A5T-I/OT Datasheet

IC ADC 12BIT 2.7V 1CH LP SOT235

MCP3221A5T-I/OT

Manufacturer Part Number
MCP3221A5T-I/OT
Description
IC ADC 12BIT 2.7V 1CH LP SOT235
Manufacturer
Microchip Technology
Datasheets

Specifications of MCP3221A5T-I/OT

Package / Case
SC-74A, SOT-753
Number Of Bits
12
Sampling Rate (per Second)
22.3k
Data Interface
I²C, Serial
Number Of Converters
1
Voltage Supply Source
Single Supply
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Architecture
SAR
Conversion Rate
22.3 KSPs
Resolution
12 bit
Input Type
Voltage
Maximum Operating Temperature
+ 125 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
VSUPEV2 - BOARD EVAL FOR MCP4022,4023,4024MXSIGDM - BOARD DEMO PICTAIL MIXED SIGNAL
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
MCP3221A5T-I/OT
MCP3221A5T-I/OTTR

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
MCP3221A5T-I/OT
Manufacturer:
Microchip
Quantity:
3 193
Part Number:
MCP3221A5T-I/OT
Manufacturer:
MICROCHIP/微芯
Quantity:
20 000
Features
• 12-bit resolution
• ±1 LSB DNL, ±2 LSB INL max.
• 250 µA max conversion current
• 5 nA typical standby current, 1 µA max.
• I
• Up to 8 devices on a single 2-Wire bus
• 22.3 ksps in I
• Single-ended analog input channel
• On-chip sample and hold
• On-chip conversion clock
• Single-supply specified operation: 2.7V to 5.5V
• Temperature range:
• Small SOT-23-5 package
Applications
• Data Logging
• Multi-zone Monitoring
• Hand-Held Portable Applications
• Battery-Powered Test Equipment
• Remote or Isolated Data Acquisition
Package Type
© 2006 Microchip Technology Inc.
- 100 kHz I
- 400 kHz I
- Industrial: -40°C to +85°C
- Extended: -40°C to +125°C
5-Pin SOT-23
2
C™-compatible serial interface
Low Power 12-Bit A/D Converter With I
V
V
A
DD
SS
IN
2
2
C Standard Mode
C Fast Mode
2
C Fast Mode
1
2
3
5
4
SDA
SCL
Description
The Microchip Technology Inc. MCP3221 is a
successive approximation A/D converter with 12-bit
resolution. Available in the SOT-23-5 package, this
device provides one single-ended input with very low
power consumption. Based on an advanced CMOS
technology, the MCP3221 provides a low maximum
conversion current and standby current of 250 µA and
1 µA,
combined with the small SOT-23 package, make this
device ideal for battery-powered and remote data
acquisition applications.
Communication to the MCP3221 is performed using a
2-wire, I
and Fast (400 kHz) I
device.
independent timing for the I
The device is also addressable, allowing up to eight
devices on a single 2-wire bus.
The MCP3221 runs on a single supply voltage that
operates over a broad range of 2.7V to 5.5V. This
device also provides excellent linearity of ±1 LSB
differential non-linearity and ±2 LSB integral non-lin-
earity, maximum.
Functional Block Diagram
A
IN
Sample
respectively.
2
C compatible interface. Standard (100 kHz)
Hold
An
and
MCP3221
on-chip
Control Logic
Clock
2
2
C modes are available with the
C™ Interface
Low
conversion
DAC
+
2
Comparator
C and conversion clocks.
current
I
2
DS21732C-page 1
12-bit SAR
C™ Interface
clock
V
SCL
consumption,
DD
enables
SDA
V
SS

Related parts for MCP3221A5T-I/OT

MCP3221A5T-I/OT Summary of contents

Page 1

... © 2006 Microchip Technology Inc. Description The Microchip Technology Inc. MCP3221 is a successive approximation A/D converter with 12-bit resolution. Available in the SOT-23-5 package, this device provides one single-ended input with very low power consumption. Based on an advanced CMOS technology, the MCP3221 provides a low maximum conversion current and standby current of 250 µ ...

Page 2

... 0. kHz 0. kHz IN 2.7V ≤ V ≤ 5. µ mA 1.53 kΩ 400 kHz only SCL µ 0.1 V and 0 µ 0.1 V and OUT SS 0 25° MHz; AMB (Note 2) pF SDA drive low, 0.4V © 2006 Microchip Technology Inc. ...

Page 3

... Electrical Characteristics: Unless otherwise noted, all parameters apply at V Parameters Temperature Ranges Industrial Temperature Range Extended Temperature Range Operating Temperature Range Storage Temperature Range Thermal Package Resistances Thermal Resistance, 5L-SOT23 © 2006 Microchip Technology Inc. = 400 kHz (Note 3). SCL Sym Min Typ Max V 2.7 — ...

Page 4

... HIGH HYS T T HD:DAT SU:DAT -40°C to +85°C. AMB Conditions kHz From (Note From (Note Note 2 ns SDA and SCL pins (Note 1) kHz From (Note From (Note Note 2 ns SDA and SCL pins (Note SU:STO T BUF © 2006 Microchip Technology Inc. ...

Page 5

... SCL 2 1.5 1 0.5 0 -0 1024 2048 3072 Digital Code FIGURE 2-3: INL vs. Code (Representative Part). © 2006 Microchip Technology Inc 5V 0V Fast Mode Timing (SCL = 400 kHz), Continuous Conversion SS 1 0.8 0.6 0.4 0.2 0 -0.2 -0.4 -0.6 -0 300 ...

Page 6

... Positive INL Negative INL - 100 125 Temperature (°C) INL vs. Temperature Positive DNL Negative DNL 100 200 300 400 Bus Rate (kHz) DNL vs. Clock Rate Positive DNL Negative DNL 3 3.5 4 4.5 5 5 DNL vs C™ Fast DD = 400 kHz). © 2006 Microchip Technology Inc. ...

Page 7

... SCL (f = 400 kHz) -0.6 SCL -0.7 -0.8 -0.9 -1 2.5 3 3.5 4 4.5 V (V) DD FIGURE 2-15: Gain Error vs. V © 2006 Microchip Technology Inc 5V 0V Fast Mode Timing (SCL = 400 kHz), Continuous Conversion SS 1 0.8 0.6 0.4 0.2 0 -0.2 -0.4 -0.6 -0 4096 FIGURE 2-16: ...

Page 8

... FIGURE 2-22: Temperature. 100 FIGURE 2-23 -40 FIGURE 2-24: Level 2. 100 125 Temperature (°C) Offset Error vs 2. Input Frequency (kHz) SINAD vs. Input Frequency 2.7V DD -30 -20 -10 0 Input Signal Level (dB) SINAD vs. Input Signal © 2006 Microchip Technology Inc. ...

Page 9

... SFDR vs. Input Frequency. 10 -10 -30 -50 -70 -90 -110 -130 0 2000 4000 6000 Frequency (Hz) FIGURE 2-27: Spectrum Using I Mode (Representative Part, 1 kHz Input Frequency). © 2006 Microchip Technology Inc 5V 0V Fast Mode Timing (SCL = 400 kHz), Continuous Conversion SS 12 11.5 11 10 FIGURE 2-28: ...

Page 10

... Rate. 100 100 125 -50 FIGURE 2-35: Temperature 5.5 2.5 . FIGURE 2-36 2.7V DD 100 200 300 400 Clock Rate (kHz) I (Active Bus) vs. Clock DDA 2. 100 125 Temperature (°C) I (Active Bus) vs. DDA 3 3.5 4 4.5 5 5 (Standby) vs DDS DD © 2006 Microchip Technology Inc. ...

Page 11

... Temperature (°C) FIGURE 2-38: Analog Input Leakage vs. Temperature. © 2006 Microchip Technology Inc 5V 0V Fast Mode Timing (SCL = 400 kHz), Continuous Conversion SS 2.1 Test Circuits 75 100 125 2.5V CM FIGURE 2-39: 100 125 MCP3221 ...

Page 12

... For normal data transfer, SDA is allowed to change only during SCL low. Changes during SCL high are reserved for indicating the START and STOP conditions. Refer to Section 6.1 “Driving the Analog Input”, “Driving the Analog Input”. © 2006 Microchip Technology Inc Bus ...

Page 13

... FIGURE 4-1: Transfer Function. © 2006 Microchip Technology Inc. 4.2 Conversion Time (t The conversion time is the time required to obtain the digital result once the analog input is disconnected from the holding capacitor. With the MCP3221, the specified conversion time is typically 8.96 µ ...

Page 14

... SCL and SDA lines are quiet Standard Mode Timing specification where the frequency of SCL is 100 kHz Fast Mode Timing specification where the frequency of SCL is 400 kHz. © 2006 Microchip Technology Inc ...

Page 15

... CONDITION ACKNOWLEDGE FIGURE 5-1: Data Transfer Sequence on the Serial Bus. © 2006 Microchip Technology Inc. Each data transfer is initiated with a START condition and terminated with a STOP condition. The number of data bytes transferred between the START and STOP conditions is determined by the master device and is unlimited ...

Page 16

... Start Bit FIGURE 5-3: Address Byte. R SCL 1 SDA D8 FIGURE 5-4: Continuous Conversions ACQ CONV initiated here Address Byte R/W Device bits Address bits Initiating the Conversion ACQ CONV initiated here Lower Data Byte ( Initiating the Conversion, © 2006 Microchip Technology Inc. ...

Page 17

... Device bits Address bits FIGURE 5-6: Continuous Conversion. © 2006 Microchip Technology Inc. 5.3.2 READING THE CONVERSION DATA Once the MCP3221 acknowledges the address byte, the device will transmit four ‘0’ bits followed by the upper four data bits of the conversion. The master device will then acknowledge this byte with an ACK = Low ...

Page 18

... PIC16F876 Microcontroller Analog MCP3221 12-bit ADC Input Signal 2 C FIGURE 6-3: Bus. ) adds to the inter impedance, directly affecting S SAMPLE Sampling Switch kΩ SAMPLE = DAC capacitance = SDA SCL 24LC01 EEPROM TC74 Temperature Sensor 2 Multiple Devices on I C™ © 2006 Microchip Technology Inc. ). ...

Page 19

... A bypass capacitor value of 0.1 µF is recommended. © 2006 Microchip Technology Inc. Digital and analog traces should be separated as much as possible on the board, with no traces running underneath the device or the bypass capacitor. Extra ...

Page 20

... MCP3221 7.0 PACKAGING INFORMATION 7.1 Package Marking Information 5-Pin SOT-23A (EIAJ SC-74) Device MCP3221A0T-I/OT MCP3221A1T-I/OT MCP3221A2T-I/OT MCP3221A3T-I/OT MCP3221A4T-I/OT MCP3221A5T-I/OT MCP3221A6T-I/OT MCP3221A7T-I/OT MCP3221A0T-E/OT MCP3221A1T-E/OT MCP3221A2T-E/OT MCP3221A3T-E/OT MCP3221A4T-E/OT MCP3221A5T-E/OT MCP3221A6T-E/OT MCP3221A7T-E/OT * Default option. Contact Microchip Factory for other address options. Legend: 1 Part Number code + temperature range ...

Page 21

... Lead Width Mold Draft Angle Top Mold Draft Angle Bottom * Controlling Parameter Notes: Dimensions D and E1 do not include mold flash or protrusions. Mold flash or protrusions shall not exceed .005" (0.127mm) per side. EIAJ Equivalent: SC-74A Drawing No. C04-091 © 2006 Microchip Technology Inc φ A1 ...

Page 22

... MCP3221 NOTES: DS21732C-page 22 © 2006 Microchip Technology Inc. ...

Page 23

... Revision C (July 2006) • Section 5.2 Device Address: Changed 4-bit device code to “1001”. Changed three address bits to “101”. Revision B (May 2003) • Numerous changes throughout document. Revision A (November 2005) • Original Release of this Document. © 2006 Microchip Technology Inc. MCP3221 DS21732C-page 23 ...

Page 24

... MCP3221 NOTES: DS21732C-page 24 © 2006 Microchip Technology Inc. ...

Page 25

... Tape and Reel MCP3221A2T-I/OT: Industrial, A2 Address, Tape and Reel MCP3221A3T-I/OT: Industrial, A3 Address, Tape and Reel MCP3221A4T-I/OT: Industrial, A4 Address, Tape and Reel MCP3221A5T-I/OT: Industrial, A5 Address, Tape and Reel MCP3221A6T-I/OT: Industrial, A6 Address, Tape and Reel MCP3221A7T-I/OT: Industrial, A7 Address, Tape and Reel MCP3221A0T-E/OT: Extended, A0 Address, ...

Page 26

... MCP3221 NOTES: DS21732C-page 26 © 2006 Microchip Technology Inc. ...

Page 27

... Select Mode, Smart Serial, SmartTel, Total Endurance, UNI/O, WiperLock and ZENA are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. SQTP is a service mark of Microchip Technology Incorporated in the U.S.A. All other trademarks mentioned herein are property of their respective companies. ...

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: 43-7242-2244-3910 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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