- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄376631 > DEM-ADS9XXE DEM-ADS9xxE - EVALUATION FIXTURE PDF資料下載
參數(shù)資料
| 型號： | DEM-ADS9XXE |
| 英文描述： | DEM-ADS9xxE - EVALUATION FIXTURE |
| 中文描述： | DEM的ADS9xxE -評價夾具 |
| 文件頁數(shù)： | 4/12頁 |
| 文件大小： | 206K |
| 代理商： | DEM-ADS9XXE |
4
DEM-ACF2101BP
Hold
Sw In
Reset
Hold
Reset
Select
Cap
In
Com
Sw Com
Sw Out
Out
100pF
C
INT
FIGURE 3. Block Diagram of 1/2 of the ACF2101BP.
MODES OF OPERATION
O
0
–10
OFF
ON
OFF
ON
HOLD
RESET
INTEGRATE
HOLD RST HOLD INTEGRATE
HOLD
Cycle
Time
MODE OF OPERATION
INTEGRATE
SWITCH
HOLD
RESET
Hold Switch
Reset Switch
On
Off
Off
Off
On/Off
On
voltage coefficient, temperature coefficient, memory, and
leakage current. Suitable types include NPO ceramic, poly-
carbonate, polystyrene, and silver mica. Space for an exter-
nal integration capacitor (C
2
and C
5
) is also provided on the
board.
The SW OUT of both channels are connected to operational
amplifiers configured as buffers (U6). A space for an output
hold capacitor (C
6
and C
7
) is provided on the board for each
side of the dual ACF2101BP. An example of how C
6
and C
7
could be used with the help of the OPA2107 (U6) opera-
tional amplifier is shown in Figure 5. In Figure 5, the
ACF2101BP is used as a programmable current to voltage
converter. The output of the circuit, V
OUT
is a dc level for a
constant current input. Refer to the ACF2101 data sheet
(PDS-1078) for a detailed discussion of this application.
By changing R
and R
from zero ohm (factory configured)
jumpers to resistors, a voltage source can be integrated
instead of a current source as shown in the schematic in
Figure 6. C
and C
must be added to the circuit in this
application to prevent the voltage at SW IN A and SW IN B
from exceeding +0.5V when the HOLD switch is off (or
open). If the voltage at SW IN A or SW IN B exceeds +0.5V,
the protection circuitry will begin to conduct. This will not
damage the ACF2101BP, but performance specifications
will not be met. Selection of C
and C
is dependent on the
time that the ACF2101BP is in the hold mode and the
magnitude of i
IN
.
C
3
, C
4
≥
(t
HOLD
i
IN(max)
) / 0.5V
t
= time that the ACF2101BP is in the hold mode
(seconds)
i
IN(MAX)
= maximum expected input current (amperes)
C
3
, C
4
= capacitance (farads)
PROGRAMMABLE TIMING GENERATOR
The timing generator (Figure 7) provides the RESET,
SELECT, and HOLD control signals for the operation of the
ACF2101. This generator is a programmable state machine
that consist of a decade counter and a few flip-flops. Each
ACF2101 control signal has its own edge-triggered flip-flop.
FIGURE 4. Modes of Operation of the ACF2101.
FIGURE 5. Block Diagram of a Programmable Current-to-Voltage Converter using the DEM-ACF2101BP Evaluation Fixture.
On: Switch shorted; Logic 0 input. Off: Switch open; Logic 1 input.
Hold
Reset
100pF
1/2
ACF2101
Select
V
OUT
I
SENSOR
C
IN
10nF
1/2
OPA2107
C
6
or C
7
Sensor
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| DEM-ADS1210 | DEM-ADS1210 - Evaluation Fixture |
| DEM-ADS1250 | DEM-ADS1250 - Evaluation Fixture |
| DEM-ADS7804 | DEM-ADS7804 - DISCONTINUED PRODUCT. No longer recommended for new design. |
| DEM-ADS7806 | DEM-ADS7806 - DISCONTINUED PRODUCT. No longer recommended for new design. |
| DEM-ADS7808 | DEM-ADS7808 - DISCONTINUED PRODUCT. No longer recommended for new design. |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DEMAE15PA101 | 功能描述:CONN DSUB PLUG 15 POS CRIMP RoHS:否 類別:連接器，互連式 >> D-Sub 系列:MIL-DTL-24308, D*MA 標(biāo)準(zhǔn)包裝:1 系列:MIL-DTL-24308, D*MA 連接器類型:D-Sub 位置數(shù):9 行數(shù):2 外殼尺寸，連接器布局:1（DE，E） 觸點類型：:信號 連接器類型:插座，母形插口 安裝類型:面板安裝 法蘭特點:體座/外殼（無螺紋） 端子:壓接 特點:- 外殼材料，表面處理:黃銅，鍍金 觸點表面涂層:金 觸點涂層厚度:50µin（1.27µm） 防護(hù)等級:- 工作溫度:-55°C ~ 125°C 額定電壓:- 額定電流:7.5A 體座材料:熱塑塑膠 顏色:- 其它名稱:IDEMA9SNMK52 |
| DEMAE15S | 功能描述:CONN DSUB RCPT 15 POS CRIMP GOLD RoHS:否 類別:連接器，互連式 >> D-Sub 系列:MIL-DTL-24308, D*MA 標(biāo)準(zhǔn)包裝:20 系列:DM HE501 連接器類型:D-Sub 位置數(shù):25 行數(shù):2 外殼尺寸，連接器布局:3（DB，B） 觸點類型：:信號 連接器類型:插頭，公引腳 安裝類型:通孔，直角 法蘭特點:配接側(cè)；母型螺釘鎖（4-40） 端子:焊接 特點:- 外殼材料，表面處理:鋼，鍍鎘 觸點表面涂層:金 觸點涂層厚度:- 防護(hù)等級:- 工作溫度:-55°C ~ 125°C 額定電壓:- 額定電流:7.5A 體座材料:熱塑塑膠，玻璃纖維增強(qiáng)型 顏色:- |
| DEMAE9P | 功能描述:D-Sub標(biāo)準(zhǔn)連接器 RoHS:否 制造商:Omron Electronics 位置/觸點數(shù)量:9 排數(shù):2 型式:Female 安裝風(fēng)格:Through Hole 安裝角:Right 端接類型:Solder 過濾: |
| DEMAE-9P | 制造商:ITT Interconnect Solutions 功能描述:Conn D-Subminiature PIN 9 POS Crimp Cable Mount 9 Terminal 1 Port 制造商:ITT Interconnect Solutions 功能描述:DEMAE-9P - Bulk |
| DEMAE-9P FO | 制造商:ITT Interconnect Solutions 功能描述:Conn D-Subminiature PIN 9 POS Crimp ST 9 Terminal 1 Port |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。