- 您现在的位置：买卖IC网 > PDF目录20198 > TC7107IPL (Microchip Technology)IC ADC 3 1/2DGT LED DVR 40-DIP PDF资料下载
参数资料
| 型号： | TC7107IPL |
| 厂商： | Microchip Technology |
| 文件页数： | 16/34页 |
| 文件大小： | 0K |
| 描述： | IC ADC 3 1/2DGT LED DVR 40-DIP |
| 标准包装： | 10 |
| 显示器类型： | LED |
| 配置： | 7 段显示 |
| 数字或字符： | A/D，3.5 位数字 |
| 电流 - 电源： | 800µA |
| 电源电压： | 5V |
| 工作温度： | -25°C ~ 85°C |
| 安装类型： | 通孔 |
| 封装/外壳： | 40-DIP（0.600"，15.24mm） |
| 供应商设备封装： | 40-PDIP |
| 包装： | 管件 |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页当前第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页
TC7106/A/TC7107/A
8.0
DEVICE PIN FUNCTIONAL
DESCRIPTION
8.2
Differential Reference
V REF + (Pin 36), V REF - (Pin 35)
8.1
Differential Signal Inputs
The reference voltage can be generated anywhere
within the V+ to V- power supply range.
V IN + (Pin 31), V IN - (Pin 30)
The TC7106A/TC7107A is designed with true
differential inputs and accepts input signals within the
input stage common mode voltage range (V CM ). The
typical range is V+ – 1.0 to V+ + 1V. Common mode
voltages are removed from the system when the
TC7106A/TC7107A operates from a battery or floating
power source (isolated from measured system) and
V IN - is connected to analog common (V COM ) (see
To prevent rollover type errors being induced by large
Common mode voltages, C REF should be large
compared to stray node capacitance.
The TC7106A/TC7107A circuits have a significantly
lower analog common temperature coefficient. This
gives a very stable voltage suitable for use as a
reference. The temperature coefficient of analog
common is 20 ppm/°C typically.
8.3
Analog Common (Pin 32)
In systems where Common mode voltages exist, the
86 dB Common mode rejection ratio minimizes error.
Common mode voltages do, however, affect the
integrator output level. Integrator output saturation
must be prevented. A worst-case condition exists if a
large positive V CM exists in conjunction with a full scale
negative differential signal. The negative signal drives
the integrator output positive along with V CM (see
swing can be reduced below the recommended 2.0V
full scale swing. The integrator output will swing within
0.3V of V+ or V- without increasing linearity errors.
The analog common pin is set at a voltage potential
approximately 3.0V below V+. The potential is between
2.7V and 3.35V below V+. Analog common is tied
internally to the N channel FET capable of sinking
20 mA. This FET will hold the common line at 3.0V
should an external load attempt to pull the common line
toward V+. Analog common source current is limited to
10 μA. Analog common is, therefore, easily pulled to a
more negative voltage (i.e., below V+ – 3.0V).
The TC7106A connects the internal V IN + and V IN -
inputs to analog common during the auto-zero cycle.
During the reference integrate phase, V IN - is
Input Buffer
C I
connected to analog common. If V IN - is not externally
connected to analog common, a Common mode
+
+
R I
voltage exists. This is rejected by the converter ’s 86 dB
V IN
–
–
+
Integrator
V I
Common mode rejection ratio. In battery operation,
analog common and V IN - are usually connected,
removing Common mode voltage concerns. In systems
–
where V- is connected to the power supply ground, or
[ V CM – V IN
T I = Integration Time
V CM
Where:
V I =
T I
R I C I
=
4000
F OSC
to a given voltage, analog common should be
connected to V IN -.
C I = Integration Capacitor
R I = Integration Resistor
FIGURE 8-1: Common Mode Voltage
Reduces Available Integrator Swing (V COM ≠ V IN ).
DS21455D-page 16
? 2008 Microchip Technology Inc.
相关PDF资料 |
PDF描述 |
|---|---|
| T95R187K016LSSL | CAP TANT 180UF 16V 10% 2824 |
| MLF2012DR22K | INDUCTOR MULTILAYER 0.22UH 0805 |
| T95R227K010LSSL | CAP TANT 220UF 10V 10% 2824 |
| CR54NP-100MC | INDUCTOR POWER 10UH 1.44A SMD |
| TC14433ELI713 | IC ADC 3 1/2 DIGIT 28PLCC |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TC7107RCPL | 功能描述:LED显示驱动器 w/LED Driver RoHS:否 制造商:Micrel 数位数量:5 片段数量: 安装风格:SMD/SMT 封装 / 箱体:PLCC-44 工作电源电压:4.75 V to 11 V 最大电源电流:10 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装:Tube |
| TC7109 | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:12-Bit レA-Compatible Analog-to-Digital Converters |
| TC7109_13 | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:12-Bit ??-A-Compatible Analog-to-Digital Converters |
| TC7109A | 制造商:TELCOM 制造商全称:TelCom Semiconductor, Inc 功能描述:12-BIT UP-COMPATIBLE ANALOG-TO-DIGITAL CONVERTERS |
| TC7109ACKW | 功能描述:模数转换器 - ADC 13 Bit Fast Recovery RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
发布紧急采购，3分钟左右您将得到回复。