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參數(shù)資料
| 型號： | LTC1094ACN |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | ADC |
| 英文描述： | LinCMOS(TM) precision quad Operational Amplifier 14-PDIP 0 to 70 |
| 中文描述： | 8-CH 10-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDIP20 |
| 封裝： | PLASTIC, DIP-20 |
| 文件頁數(shù)： | 20/32頁 |
| 文件大?。?/td> | 356K |
| 代理商： | LTC1094ACN |
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20
LTC 1091/LTC 1092
LTC 1093/LTC 1094
U
S
A
O
PPLICATI
U
U
Figure 3. Several LTC1094s Sharing One 3-Wire Serial Interface
8 CHANNELS
8 CHANNELS
8 CHANNELS
3
3
3
3
3-WIRE SERIAL
INTERFACE TO OTHER
PERIPHERALS OR LTC1094s
2
1
0
OUTPUT PORT
SERIAL DATA
MPU
LTC1091-4 F03
LTC1094
CS
LTC1094
CS
LTC1094
CS
Sharing the Serial Interface
The LTC1094 can share the same 2- or 3-wire serial
interface with other peripheral components or other
LTC1094s (see Figure 3). In this case, the CS signals
decide which LTC1094 is being addressed by the MPU.
ANALOG CONSIDERATIONS
1. Grounding
The LTC1091/LTC1092/LTC1093/LTC1094 should be used
with an analog ground plane and single point grounding
techniques.
The AGND pin (GND on the LTC1091/LTC1092) should be
tied directly to this ground plane.
The DGND pin of the LTC1093/LTC1094 can also be tied
directly to this ground plane because minimal digital noise
is generated within the chip itself.
The V
CC
pin should be bypassed to the ground plane with
a 4.7
μ
F tantalum with leads as short as possible. AV
CC
and
DV
CC
should be tied together on the LTC1094. The V
–
pin
(LTC1093/LTC1094) should be bypassed with a 0.1
μ
F
ceramic disk. For single supply applications, V
–
can be
tied to the ground plane.
It is also recommended that the REF
–
pin and the COM pin
be tied directly to the ground plane. All analog inputs
should be referenced directly to the single point ground.
Digital inputs and outputs should be shielded from and/or
routed away from the reference and analog circuitry.
Figure 4. Example Ground Plane for the LTC1091
Figure 4 shows an example of an ideal LTC1091 ground
plane design for a 2-sided board. Of course, this much
ground plane will not always be possible, but users should
strive to get as close to this ideal as possible.
2. Bypassing
For good performance, V
CC
must be free of noise and
ripple. Any changes in the V
CC
voltage with respect to
analog ground during a conversion cycle can induce
errors or noise in the output code. Because the V
CC
(V
REF
)
pin of the LTC1091 defines the voltage span of the A/D
converter, its bypassing is especially important. V
CC
noise
and ripple can be kept below 1mV by bypassing the V
CC
pin
directly to the analog ground plane with a 4.7
μ
F tantalum
with leads as short as possible. AV
CC
and DV
CC
should be
tied together on the LTC1094. Figures 5 and 6 show the
effects of good and poor V
CC
bypassing.
1
2
3
4
S
S
8
7
6
5
4.7
μ
F
TANTALUM
V
CC
LTC1091-4 F04
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LTC1094C | 1-, 2-, 6- and 8-Channel, 10-Bit Serial I/O Data Acquisition Systems |
| LTC1094CN | LinCMOS(TM) precision quad Operational Amplifier 14-SOIC -40 to 85 |
| LTC1091C | 1-, 2-, 6- and 8-Channel, 10-Bit Serial I/O Data Acquisition Systems |
| LTC1092AC | 1-, 2-, 6- and 8-Channel, 10-Bit Serial I/O Data Acquisition Systems |
| LTC1092ACN8 | LinCMOS(TM) Precision Quad Operational Amplifier 14-SOIC -40 to 85 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC1094ACN#PBF | 功能描述:IC DATA ACQ SYS 10BIT 8CH 20-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: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 |
| LTC1094AMJ | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Single-Ended Data Acquisition System |
| LTC1094C | 制造商:LINER 制造商全稱:Linear Technology 功能描述:1-, 2-, 6- and 8-Channel, 10-Bit Serial I/O Data Acquisition Systems |
| LTC1094CN | 功能描述:IC DATA ACQ SYS 10BIT 8CH 20-DIP 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 |
| LTC1094CN#PBF | 功能描述:IC DATA ACQ SYS 10BIT 8CH 20-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: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 |
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