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| 型号： | TC7106CPL |
| 元件分类： | ADC |
| 英文描述： | 1-CH DUAL-SLOPE ADC, PARALLEL ACCESS, PDIP40 |
| 封装： | 0.600 INCH, PLASTIC, DIP-40 |
| 文件页数： | 4/34页 |
| 文件大小： | 482K |
| 代理商： | TC7106CPL |
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TC7106/A/TC7107/A
DS21455D-page 12
2008 Microchip Technology Inc.
6.0
DIGITAL SECTION (TC7107A)
Figure 6-2 shows a TC7106A block diagram. It is
designed to drive common anode LEDs. It is identical
to the TC7106A, except that the regulated supply and
backplane drive have been eliminated and the segment
drive is typically 8 mA. The 1000’s output (Pin 19) sinks
current from two LED segments, and has a 16 mA drive
capability.
In both devices, the polarity indication is “ON” for
negative analog inputs. If VIN- and VIN+ are reversed,
this indication can be reversed also, if desired.
The display font is the same as the TC7106A.
6.1
System Timing
The oscillator frequency is divided by 4 prior to clocking
the
internal
decade
counters.
The
four-phase
measurement cycle takes a total of 4000 counts, or
16,000 clock pulses. The 4000-count cycle is indepen-
dent of input signal magnitude.
Each phase of the measurement cycle has the
following length:
1.
Auto-zero phase: 1000 to 3000 counts (4000 to
12000 clock pulses).
For signals less than full scale, the auto-zero phase is
assigned the unused reference integrate time period:
2.
Signal integrate: 1000 counts (4000 clock
pulses).
This time period is fixed. The integration period is:
EQUATION 6-1:
3.
Reference Integrate: 0 to 2000 counts (0 to 8000
clock pulses).
The TC7106A/TC7107A are drop-in replacements for
the TC7106/TC7107 parts. External component value
changes are not required to benefit from the low drift
internal reference.
6.2
Clock Circuit
Three clocking methods may be used (see Figure 6-1):
1.
An external oscillator connected to Pin 40.
2.
A crystal between Pins 39 and 40.
3.
An RC oscillator using all three pins.
FIGURE 6-1:
Clock Circuits.
Where:
FOSC
=
Externally set clock frequency
T
SI
4
F
OSC
-------------
1000
×
=
TC7106A
TC7107A
4
Crystal
RC Network
40
38
EXT
OSC
39
To TEST Pin on TSC7106A
To GND Pin on TSC7107A
To
Counter
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TC7106CPL | 制造商:Microchip Technology Inc 功能描述:ADC 3-1/2 DIGIT LCD DRIVER 40DIP 制造商:Microchip Technology Inc 功能描述:ADC, 3-1/2 DIGIT, LCD DRIVER, 40DIP 制造商:Microchip Technology Inc 功能描述:ADC, 3-1/2 DIGIT, LCD DRIVER, 40DIP; Resolution (Bits):3.5bit; Supply Current:800A; Digital IC Case Style:DIP; No. of Pins:40; Input Channel Type:Differential; Data Interface:Parallel; Operating Temperature Min:0C; Operating ;RoHS Compliant: Yes |
| TC7106IJL | 功能描述:LCD 驱动器 3-1/2 Digit A/D w/ LCD Driver RoHS:否 制造商:Maxim Integrated 数位数量:4.5 片段数量:30 最大时钟频率:19 KHz 工作电源电压:3 V to 3.6 V 最大工作温度:+ 85 C 最小工作温度:- 20 C 封装 / 箱体:PDIP-40 封装:Tube |
| TC7106IKW | 功能描述:LCD 驱动器 w/LCD Driver RoHS:否 制造商:Maxim Integrated 数位数量:4.5 片段数量:30 最大时钟频率:19 KHz 工作电源电压:3 V to 3.6 V 最大工作温度:+ 85 C 最小工作温度:- 20 C 封装 / 箱体:PDIP-40 封装:Tube |
| TC7106IPL | 功能描述:LCD 驱动器 w/LCD Driver RoHS:否 制造商:Maxim Integrated 数位数量:4.5 片段数量:30 最大时钟频率:19 KHz 工作电源电压:3 V to 3.6 V 最大工作温度:+ 85 C 最小工作温度:- 20 C 封装 / 箱体:PDIP-40 封装:Tube |
| TC7106RCPL | 功能描述:LCD 驱动器 w/LCD Driver RoHS:否 制造商:Maxim Integrated 数位数量:4.5 片段数量:30 最大时钟频率:19 KHz 工作电源电压:3 V to 3.6 V 最大工作温度:+ 85 C 最小工作温度:- 20 C 封装 / 箱体:PDIP-40 封装:Tube |
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