参数资料
型号: ADS1222IPWT
厂商: Texas Instruments
文件页数: 22/26页
文件大小: 0K
描述: IC 24BIT ADC W/2CH MUX 14-TSSOP
产品培训模块: Data Converter Basics
视频文件: Nuts and Bolts of the Delta-Sigma Converter
标准包装: 1
位数: 24
采样率(每秒): 240
数据接口: 串行
转换器数目: 1
功率耗散(最大): 2.25mW
电压电源: 模拟和数字
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 14-TSSOP(0.173",4.40mm 宽)
供应商设备封装: 14-TSSOP
包装: 标准包装
输入数目和类型: 4 个单端,单极;2 个差分,双极
其它名称: 296-17321-6
ADS1222
SBAS314B APRIL 2004 REVISED JANUARY 2009
www.ti.com
5
PIN ASSIGNMENTS
PW PACKAGE
TSSOP-14
(TOP VIEW)
VDD
SCLK
CLK
DRDY/DOUT
MUX
TEMPEN
BUFEN
VREFP
VREFN
GND
AINN1
AINP1
AINN2
AINP2
1
2
3
4
5
6
7
14
13
12
11
10
9
8
ADS1222
Terminal Functions
TERMINAL
NAME
NO.
I/O
DESCRIPTION
VDD
1
Analog/Digital
Analog and digital power supply
SCLK
2
Digital input
Serial clock input
CLK
3
Digital input
System clock input
DRDY/DOUT
4
Digital Output
Dual-purpose output:
Data ready: indicates valid data by going low.
Data output: outputs data, MSB first, on the rising edge of SCLK.
MUX
5
Digital input
Selects analog input of mux
TEMPEN
6
Digital input
Selects temperature sensor input from mux
BUFEN
7
Digital input
Enables input buffer
AINP2
8
Analog input
Analog channel 2 positive input
AINN2
9
Analog input
Analog channel 2 negative input
AINP1
10
Analog input
Analog channel 1 positive input
AINN1
11
Analog input
Analog channel 1 negative input
GND
12
Analog/Digital
Analog and digital ground
VREFN
13
Analog input
Negative reference input
VREFP
14
Analog input
Positive reference input
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