参数资料
型号: TC7136CKW713
厂商: Microchip Technology
文件页数: 8/22页
文件大小: 0K
描述: IC ADC 3 1/2DGT LOW PWR 44-MQFP
标准包装: 900
显示器类型: LCD
配置: 7 段显示
数字或字符: A/D,3.5 位数字
电流 - 电源: 70µA
电源电压: 9V
工作温度: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 44-QFP
供应商设备封装: 44-MQFP(10x10)
包装: 带卷 (TR)
TC7136/TC7136A
TABLE 2-1:
Pin Number
PIN DESCRIPTION (CONTINUED)
(40-Pin PDIP)
(Reverse)
Symbol
Description
Normal
34
(7)
C REF +
A 0.1 μ F capacitor is used in most applications. If a large Common mode voltage
exists (for example, the V IN - pin is not at analog common) and a 200mV scale is
used, a 1 μ F capacitor is recommended, which will hold the rollover error to
0.5 count.
35
(6)
(5)
V REF -
V REF +
See Pin 36.
The analog input required to generate a full scale output (1999 counts). Place
100mV between Pins 35 and 36 for 199.9mV full scale. Place 1V between Pins 35
and 36 for 2V full scale. See Section 6.6, Reference Voltage.
36
(4)
TEST
Lamp test. When pulled HIGH (to V+), all segments will be turned ON and the
display should read -1888 . It may also be used as a negative supply for externally
generated decimal points. See Section 7.4, Test for additional information.
37
38
39
(3)
(2)
(1)
OSC3
OSC2
OSC1
See Pin 40.
See Pin 40.
Pins 40, 39 and 38 make up the oscillator section. For a 48kHz clock
(3 readings per second), connect Pin 40 to the junction of a 180k Ω resistor and a
50pF capacitor. The 180k Ω resistor is tied to Pin 39 and the 50pF capacitor is tied
to Pin 38.
DS21461C-page 8
? 2005 Microchip Technology Inc.
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