AD7151BRMZ Analog Devices Inc, AD7151BRMZ Datasheet - Page 2

• Manufacturer Part Number: AD7151BRMZ
• Description: IC CAP CONV 1CH ULT LP 10MSOP
• Manufacturer: Analog Devices Inc
• Type: Capacitance-to-Digital Converterr

Specifications of AD7151BRMZ

• Input Type: Voltage
• Output Type: Digital
• Interface: 2-Wire Serial
• Current - Supply: 120µA
• Mounting Type: Surface Mount
• Package / Case: 10-MSOP, Micro10™, 10-uMAX, 10-uSOP
• Resolution (bits): 12bit
• Sampling Rate: 100SPS
• Input Channel Type: Single Ended
• Data Interface: 2-Wire, I2C, Serial
• Supply Voltage Range - Analog: 2.7V To 3.6V
• Supply Current: 70µA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

AD7151
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications....................................................................................... 1
General Description ......................................................................... 1
Functional Block Diagram .............................................................. 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
Absolute Maximum Ratings............................................................ 5
Pin Configuration and Function Descriptions............................. 6
Typical Performance Characteristics ............................................. 7
Architecture and Main Features ................................................... 10
Register Descriptions ..................................................................... 14
REVISION HISTORY
11/07—Revision 0: Initial Version
Timing Specifications .................................................................. 4
ESD Caution.................................................................................. 5
Capacitance-to-Digital Converter............................................ 10
CAPDAC ..................................................................................... 10
Comparator and Threshold Modes.......................................... 11
Adaptive Threshold.................................................................... 11
Data Average ............................................................................... 11
Sensitivity..................................................................................... 12
Hysteresis..................................................................................... 12
Timeout........................................................................................ 12
AutoCAPDAC Adjustment ....................................................... 13
Power-Down Timer ................................................................... 13
Power Supply Monitor ............................................................... 13
Status Register ............................................................................. 15
Data Register ............................................................................... 16
Average Register ......................................................................... 16
Rev. 0 | Page 2 of 28
Serial Interface ................................................................................ 21
Hardware Design Considerations ................................................ 23
Outline Dimensions ....................................................................... 26
Fixed Threshold Register........................................................... 16
Sensitivity Register ..................................................................... 16
Timeout Register ........................................................................ 17
Setup Register ............................................................................. 18
Configuration Register .............................................................. 19
Power-Down Timer Register .................................................... 20
CAPDAC Register...................................................................... 20
Serial Number Register.............................................................. 20
Chip ID Register......................................................................... 20
Read Operation........................................................................... 21
Write Operation.......................................................................... 21
AD7151 Reset ............................................................................. 22
General Call ................................................................................ 22
Overview ..................................................................................... 23
Parasitic Capacitance to Ground.............................................. 23
Parasitic Resistance to Ground................................................. 23
Parasitic Parallel Resistance ...................................................... 23
Parasitic Serial Resistance ......................................................... 24
Input Overvoltage Protection ................................................... 24
Input EMC Protection ............................................................... 24
Power Supply Decoupling and Filtering.................................. 24
Application Examples ................................................................ 25
Ordering Guide .......................................................................... 26