- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄98175 > TC7117CKWTR 1-CH 13-BIT DUAL-SLOPE ADC, PQFP44 PDF資料下載
參數(shù)資料
| 型號(hào)： | TC7117CKWTR |
| 元件分類： | ADC |
| 英文描述： | 1-CH 13-BIT DUAL-SLOPE ADC, PQFP44 |
| 封裝： | PLASTIC, QFP-44 |
| 文件頁(yè)數(shù)： | 17/17頁(yè) |
| 文件大?。?/td> | 221K |
| 代理商： | TC7117CKWTR |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)當(dāng)前第17頁(yè)
9
3-1/2 DIGIT ANALOG-TO-DIGITAL
CONVERTERS WITH HOLD
TC7116
TC7116A
TC7117
TC7117A
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 1mA 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
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 inphase 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
–
IN and V
+
IN are reversed, this indication can be
reversed also, if desired.
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
+
0.5mA
2mA
LATCH
2
OSC3
OSC1
÷
HLDR
70k
LOGIC CONTROL
1
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TC7117CKW | 1-CH 13-BIT DUAL-SLOPE ADC, ACCESS, PQFP44 |
| TC7116CKWRT | 1-CH DUAL-SLOPE ADC, ACCESS, PQFP44 |
| TC7117ACLWTR | 1-CH 13-BIT DUAL-SLOPE ADC, PQCC44 |
| TC7116ACKW | 1-CH 13-BIT DUAL-SLOPE ADC, ACCESS, PQFP44 |
| TC7117CLWRT | 1-CH DUAL-SLOPE ADC, ACCESS, PQCC44 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TC7117CLW | 功能描述:LED顯示驅(qū)動(dòng)器 w/Hold RoHS:否 制造商:Micrel 數(shù)位數(shù)量:5 片段數(shù)量: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PLCC-44 工作電源電壓:4.75 V to 11 V 最大電源電流:10 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝:Tube |
| TC7117CLW713 | 功能描述:LED顯示驅(qū)動(dòng)器 w/Hold RoHS:否 制造商:Micrel 數(shù)位數(shù)量:5 片段數(shù)量: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PLCC-44 工作電源電壓:4.75 V to 11 V 最大電源電流:10 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝:Tube |
| TC7117CPL | 功能描述:LED顯示驅(qū)動(dòng)器 3.5 digit A/D RoHS:否 制造商:Micrel 數(shù)位數(shù)量:5 片段數(shù)量: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PLCC-44 工作電源電壓:4.75 V to 11 V 最大電源電流:10 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝:Tube |
| TC7117IJL | 功能描述:LED顯示驅(qū)動(dòng)器 3-1/2 Digit A/D w/ Hold RoHS:否 制造商:Micrel 數(shù)位數(shù)量:5 片段數(shù)量: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PLCC-44 工作電源電壓:4.75 V to 11 V 最大電源電流:10 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝:Tube |
| TC7117RCPL | 功能描述:LED顯示驅(qū)動(dòng)器 w/Hold RoHS:否 制造商:Micrel 數(shù)位數(shù)量:5 片段數(shù)量: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PLCC-44 工作電源電壓:4.75 V to 11 V 最大電源電流:10 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝:Tube |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。