參數(shù)資料
型號(hào)： TC7116ACLW
廠商： Microchip Technology Inc.
英文描述： 3-1/2 Digit Analog-to-Digital Converters with Hold
中文描述： 3-1/2數(shù)字模擬數(shù)字轉(zhuǎn)換器與保持
文件頁(yè)數(shù)： 9/14頁(yè)
文件大?。?/td> 218K
代理商： TC7116ACLW
3-211
TELCOM SEMICONDUCTOR, INC.
7
6
5
4
3
1
2
8
negative supply for externally-generated segment drivers,
such as decimal points or any other presentation the user
may want to include on the LCD. (Figures 5 and 6 show
such an application.) No more than a 1 mA load should be
applied.
The second function is a "lamp test." When TEST is
pulled HIGH (to V
+
), all segments will be turned ON and
the display should read –1888. The TEST pin will sink
about 10 mA under these conditions.
DIGITAL SECTION
Figures 8 and 9 show the digital section for TC7116/
TC7116A and TC7117/TC7117A, respectively. For the
TC7116/TC7116A (Figure 8), an internal digital ground is
generated from a 6V zener diode and a large P-channel
source follower. This supply is made stiff to absorb the
relative large capacitive currents when the backplane (BP)
voltage is switched. The BP frequency is the clock fre-
quency
4
800. For 3 readings per second, this is a 60-Hz
square wave with a nominal amplitude of 5V. The seg-
ments are driven at the same frequency and amplitude,
and are in-phase with BP when OFF, but out-of-phase
when ON. In all cases, negligible DC voltage exists across
the segments.
Figure 9 is the digital section of the TC7117/TC7117A.
It is identical to the TC7116/TC7116A, except that the
regulated supply and BP 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. The TC7117/TC7117A are designed to
drive common anode LED displays.
In both devices, the polarity indication is ON for analog
inputs. If V
–
reversed also, if desired.
IN
and V
+N
are reversed, this indication can be
Figure 8. TC7116/TC7116A Digital Section
TC7116
TC7116A
LCD PHASE DRIVER
THOUSANDS
HUNDREDS
TENS
UNITS
4
BACKPLANE
21
39
37
OSC
INTERNAL DIGITAL GROUND
V+
V–
TEST
6.2V
500
26
35
TO SWITCH DRIVERS
FROM COMPARATOR OUTPUT
CLOCK
VTH = 1V
7-SEGMENT
DECODE
7-SEGMENT
DECODE
7-SEGMENT
DECODE
200
40
38
TYPICAL SEGMENT OUTPUT
INTERNAL DIGITAL GROUND
SEGMENT
OUTPUT
V+
0.5 mA
2 mA
LATCH
2
OSC3
OSC1
÷
÷
HLDR
;
70 k
LOGIC CONTROL
1
3-1/2 DIGIT ANALOG-TO-DIGITAL
CONVERTERS WITH HOLD
TC7116
TC7116A
TC7117
TC7117A
相關(guān)PDF資料
PDF描述
TC7116ACPL 3-1/2 Digit Analog-to-Digital Converters with Hold
TC7117 3-1/2 Digit Analog-to-Digital Converters with Hold
TC7117A 3-1/2 Digit Analog-to-Digital Converters with Hold
TC7117ACLW 3-1/2 Digit Analog-to-Digital Converters with Hold
TC7117ACPL 3-1/2 Digit Analog-to-Digital Converters with Hold
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TC7116ACLW713 功能描述:LCD 驅(qū)動(dòng)器 w/Hold RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)量:30 最大時(shí)鐘頻率:19 KHz 工作電源電壓:3 V to 3.6 V 最大工作溫度:+ 85 C 最小工作溫度:- 20 C 封裝 / 箱體:PDIP-40 封裝:Tube
TC7116ACPL 功能描述:LCD 驅(qū)動(dòng)器 w/Hold RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)量:30 最大時(shí)鐘頻率:19 KHz 工作電源電壓:3 V to 3.6 V 最大工作溫度:+ 85 C 最小工作溫度:- 20 C 封裝 / 箱體:PDIP-40 封裝:Tube
TC7116AIJL 功能描述:LCD 驅(qū)動(dòng)器 3-1/2 Digit A/D w/ Hold RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)量:30 最大時(shí)鐘頻率:19 KHz 工作電源電壓:3 V to 3.6 V 最大工作溫度:+ 85 C 最小工作溫度:- 20 C 封裝 / 箱體:PDIP-40 封裝:Tube
TC7116CKW 功能描述:LCD 驅(qū)動(dòng)器 w/Hold RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)量:30 最大時(shí)鐘頻率:19 KHz 工作電源電壓:3 V to 3.6 V 最大工作溫度:+ 85 C 最小工作溫度:- 20 C 封裝 / 箱體:PDIP-40 封裝:Tube
TC7116CKW713 功能描述:LCD 驅(qū)動(dòng)器 w/Hold RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)量:30 最大時(shí)鐘頻率:19 KHz 工作電源電壓:3 V to 3.6 V 最大工作溫度:+ 85 C 最小工作溫度:- 20 C 封裝 / 箱體:PDIP-40 封裝:Tube
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