参数资料
型号: MCP3221DM-PCTL
厂商: Microchip Technology
文件页数: 1/28页
文件大小: 0K
描述: BOARD DEMO FOR PICTAIL MCP3221
标准包装: 1
系列: PICtail™
ADC 的数量: 1
位数: 12
采样率(每秒): 22.3k
数据接口: 串行
工作温度: -40°C ~ 85°C
已用 IC / 零件: MCP3221
已供物品: 板,缆线,CD
2006 Microchip Technology Inc.
DS21732C-page 1
MCP3221
Features
12-bit resolution
±1 LSB DNL, ±2 LSB INL max.
250 A max conversion current
5 nA typical standby current, 1 A max.
I2C-compatible serial interface
- 100 kHz I2C Standard Mode
- 400 kHz I2C Fast Mode
Up to 8 devices on a single 2-Wire bus
22.3 ksps in I2C Fast Mode
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:
- Industrial: -40°C to +85°C
- Extended: -40°C to +125°C
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
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 A and
1 A,
respectively.
Low
current
consumption,
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, I2C compatible interface. Standard (100 kHz)
and Fast (400 kHz) I2C modes are available with the
device.
An
on-chip
conversion
clock
enables
independent timing for the I2C and conversion clocks.
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
5-Pin SOT-23
SCL
AIN
MCP3
221
1
2
3
5
SDA
VSS
VDD
4
Comparator
Sample
and
Hold
12-bit SAR
DAC
I2C Interface
AIN
VSS
VDD
SCL
SDA
Clock
Control Logic
+
Low Power 12-Bit A/D Converter With I2C Interface
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