MCP3021 Microchip Technology, Inc., MCP3021 Datasheet
MCP3021
Manufacturer Part Number
MCP3021
Description
The Microchip Technology Inc
Manufacturer
Microchip Technology, Inc.
Datasheet
1.MCP3021.pdf
(26 pages)
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Features
• 10-bit resolution
• ±1 LSB DNL, ±1 LSB INL max.
• 250 µA max conversion current
• 5 nA typical standby current, 1 µA max.
• I
• Up to 8 devices on 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 package
Applications
• Data Logging
• Multi-zone Monitoring
• Hand Held Portable Applications
• Battery Powered Test Equipment
• Remote or Isolated Data Acquisition
Package Type
M
- 100 kHz I
- 400 kHz I
- Extended: -40°C to +125°C
2003 Microchip Technology Inc.
5-Pin SOT-23A
2
C™ compatible serial interface
Low Power 10-Bit A/D Converter With I
V
V
AIN
DD
SS
2
2
C Standard mode
C Fast mode
2
C Fast mode
1
2
3
5
4
SDA
SCL
Description
The Microchip Technology Inc. MCP3021 is a succes-
sive approximation A/D converter (ADC) with 10-bit
resolution. Available in the SOT-23 package, this
device provides one single-ended input with very low
power consumption. Based on an advanced CMOS
technology, the MCP3021 provides a low maximum
conversion current and standby current of 250 µA and
1 µA, respectively. Low current consumption, com-
bined with the small SOT-23 package, make this
device ideal for battery-powered and remote data
acquisition applications.
Communication to the MCP3021 is performed using a
2-wire I
and Fast (400 kHz) I
device. An on-chip conversion clock enables indepen-
dent timing for the I
device is also addressable, allowing up to eight devices
on a single 2-wire bus.
The MCP3021 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 differ-
ential non-linearity (DNL) and ±1 LSB integral non-
linearity (INL), maximum.
Functional Block Diagram
AIN
2
C compatible interface. Standard (100 kHz)
Sample
Hold
and
MCP3021
Control Logic
Clock
2
2
2
C modes are available with the
C™ Interface
C and conversion clocks. The
DAC
–
+
Comparator
DS21805A-page 1
10-Bit SAR
V
SCL
Interface
DD
I
2
C™
V
SDA
SS
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