参数资料
型号: PIC10F200T-E/OT
厂商: Microchip Technology
文件页数: 54/94页
文件大小: 0K
描述: IC PIC MCU FLASH 256X12 SOT23-6
产品培训模块: 8-bit PIC® Microcontroller Portfolio
标准包装: 1
系列: PIC® 10F
核心处理器: PIC
芯体尺寸: 8-位
速度: 4MHz
外围设备: POR,WDT
输入/输出数: 3
程序存储器容量: 384B(256 x 12)
程序存储器类型: 闪存
RAM 容量: 16 x 8
电压 - 电源 (Vcc/Vdd): 2 V ~ 5.5 V
振荡器型: 内部
工作温度: -40°C ~ 125°C
封装/外壳: SOT-23-6
包装: 标准包装
产品目录页面: 637 (CN2011-ZH PDF)
其它名称: PIC10F200T-E/OTDKR
59
AT89/83EB5114
4311C–8051–02/08
Channel 3 Amplifier and
Rectifying Function
If needed, the average value of the rectified signal on channel 3 can be extracted and
amplified before A/D conversion as shown on Figure 28.
Figure 28. Channel 3 Amplifier
The main characteristics of this block are the following:
Input signal level: sine wave centered around Vssa, peak value from 70 to 550 mV
depending on gain, Frequency range from 35 to 70KHz. Be sure that the peak value
on the amplifier output is lower than voltage supply.
Gain: x5, x10, x15 and x20, selected using AC3E, AC3G1 and AC3G0 in ADC
Amplifier register (See Table 44 and Table 52)
Max time constant of the average value extraction: 0.5ms. When the gain is
changed or when the signal levels changes from the minimum to the maximum
value, a new measurement can be done after 10 time constant.
The amplifier needs 20us to fully load the ADC hold capacitance so the ADC
conversion must occurs at least 20us after the amplified channel is sampled.
Accuracy on amplification and extraction: +/- 5%
Note:
The AIN3 direct channel is not equivalent to the other channels. There is a serial resis-
tance of around 100K between the pin and the ADC input. So when the amplifier is
bypassed, it is necessary to switch at least 20us the mux on AIN3 input before starting a
conversion.
Table 44. ADCF Register
ADCA (S:F7h)
ADC Amplifier Configuration
Reset Value = 0000 0000b
AIN3/P4.3
A/D input
Amplification
(programmable gain)
AC3G1
ADCF.7
AC3E
ADCF.5
AC3G0
ADCF.6
Enable
Gain
Average value
extraction
7
6
5
4
3
2
1
0
-
AC3E
AC3G1
AC3G0
Bit
Number
Bit
Mnemonic Description
7-3
-
Not used
2
AC3E
Enable Channel 3 amplifier
Set to enable amplifier.
Clear for Standby mode
1
AC3G1
Channel 3 amplifier gain
AC3G1
AC3G0
0
gain x5
0
1
gain x10
1
0
gain x15
1
gain x20
0
AC3G0
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