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參數(shù)資料
| 型號(hào)： | LTC1293DCN |
| 廠商： | Linear Technology |
| 文件頁數(shù)： | 17/28頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC DATA ACQ SYSTEM 12BIT 16-DIP |
| 標(biāo)準(zhǔn)包裝： | 25 |
| 類型： | 數(shù)據(jù)采集系統(tǒng)（DAS），ADC |
| 分辨率（位）： | 12 b |
| 采樣率（每秒）： | 46.5k |
| 數(shù)據(jù)接口： | 串行，并聯(lián) |
| 電壓電源： | 雙 ± |
| 電源電壓： | ±5V，5V |
| 工作溫度： | 0°C ~ 70°C |
| 安裝類型： | 通孔 |
| 封裝/外殼： | 16-DIP（0.300"，7.62mm） |
| 供應(yīng)商設(shè)備封裝： | 16-PDIP |
| 包裝： | 管件 |
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24
LTC1293/LTC1294/LTC1296
129346fs
U
S
A
O
PPLICATI
WU
U
I FOR ATIO
This means four channels can handle 7mA of input current
each. Reducing CLK frequency from a maximum of 1MHz
(See typical performance characteristics curves Maxi-
mum CLK Frequency vs Source Resistance and Sample
and Hold Acquisition Time vs Source Resistance) allows
the use of larger current limiting resistors. The “+” input
can accept a resistor value of 1k
but the “–” input cannot
accept more than 250
when the maximum clock fre-
quency of 1MHz is used. If the LTC1293/4/6 is clocked at
the maximum clock frequency and 250
is not enough to
current limit the “–” input source then the clamp diodes
are recommended (Figures 20a and 20b). The reason for
the limit on the resistor value is the MSB bit test is affected
by the value of the resistor placed at the “–” input (see
discussion on Analog Inputs and the typical performance
characteristics curve Maximum CLK Frequency vs Source
Resistance).
If VCC and VREF are not tied together, then VCC should be
turned on first, then VREF. If this sequence cannot be met
connecting a diode from VREF to VCC is recommended (see
Figure 21).
For dual supplies (bipolar mode) placing two Schottky
diodes from VCC and V
– to ground (Figure 22) will prevent
Figure 20a. Overvoltage Protection for Inputs
Figure 19. Overvoltage Protection for Inputs
Figure 22. Power Supply Reversal
Figure 21
power supply reversal from occuring when an input source
is applied to the analog MUX before power is applied to the
device. Power supply reversal occurs, for example, if the
input is pulled below V
–. V
CC will then pull a diode drop
below ground which could cause the device not to power
up properly. Likewise, if the input is pulled above VCC, V
–
will be pulled a diode drop above ground. If no inputs are
present on the MUX, the Schottky diodes are not required
if V
– is applied first then V
CC.
Because a unique input protection structure is used on the
digital input pins, the signal levels on these pins can
exceed the device VCC without damaging the device.
Figure 20b. Overvoltage Protection for Inputs
+5V
LTC1293 F19
DGND
V–
AGND
VCC
1N4148 DIODES
LTC1293/4/6
–5V
+5V
LTC1293 F20a
+
DGND
V–
AGND
VCC
–
250
1k
LTC1293/4/6
–5V
+5V
LTC1293 F20b
+
DGND
V–
AGND
VCC
–
LTC1293/4/6
1N4148 DIODES
1k
–5V
+5V
LTC1293 F22
DGND
AGND
VCC
LTC1293/4/6
1N5817
–5V
V–
1N5817
+5V
LTC1293 F21
DGND
AGND
VCC
LTC1293/4/6
1N4148
+5V
REF+
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| LTC1293DCN#PBF | 功能描述:IC DATA ACQ SYSTEM 12BIT 16-DIP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - ADCs/DAC - 專用型 系列:- 產(chǎn)品培訓(xùn)模塊:Data Converter Basics 標(biāo)準(zhǔn)包裝:1 系列:- 類型:電機(jī)控制 分辨率（位）:12 b 采樣率（每秒）:1M 數(shù)據(jù)接口:串行，并聯(lián) 電壓電源:單電源 電源電壓:2.7 V ~ 3.6 V，4.5 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:100-TQFP 供應(yīng)商設(shè)備封裝:100-TQFP（14x14） 包裝:剪切帶 (CT) 其它名稱:296-18373-1 |
| LTC1293DCSW | 功能描述:IC DATA ACQ SYSTEM 12BIT 16-SOIC RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - ADCs/DAC - 專用型 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:50 系列:- 類型:數(shù)據(jù)采集系統(tǒng)（DAS） 分辨率（位）:16 b 采樣率（每秒）:21.94k 數(shù)據(jù)接口:MICROWIRE?，QSPI?，串行，SPI? 電壓電源:模擬和數(shù)字 電源電壓:1.8 V ~ 3.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:40-WFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:40-TQFN-EP（6x6） 包裝:托盤 |
| LTC1293DCSW#PBF | 功能描述:IC DATA ACQ SYSTEM 12BIT 16-SOIC RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - ADCs/DAC - 專用型 系列:- 產(chǎn)品培訓(xùn)模塊:Data Converter Basics 標(biāo)準(zhǔn)包裝:1 系列:- 類型:電機(jī)控制 分辨率（位）:12 b 采樣率（每秒）:1M 數(shù)據(jù)接口:串行，并聯(lián) 電壓電源:單電源 電源電壓:2.7 V ~ 3.6 V，4.5 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:100-TQFP 供應(yīng)商設(shè)備封裝:100-TQFP（14x14） 包裝:剪切帶 (CT) 其它名稱:296-18373-1 |
| LTC1293DCSW#PBF | 制造商:Linear Technology 功能描述:A/D Converter (A-D) IC |
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