- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄377769 > LTC2424I (Linear Technology Corporation) 16-Bit 2.5-V to 3.3-V/3.3-V To 5-V Level Shifting Transceiver With 3-State Outputs 54-BGA MICROSTAR JUNIOR -40 to 85 PDF資料下載
參數(shù)資料
| 型號： | LTC2424I |
| 廠商： | Linear Technology Corporation |
| 英文描述： | 16-Bit 2.5-V to 3.3-V/3.3-V To 5-V Level Shifting Transceiver With 3-State Outputs 54-BGA MICROSTAR JUNIOR -40 to 85 |
| 中文描述： | 4-/8-Channel 20位ADC的無延遲uPower |
| 文件頁數(shù)： | 25/36頁 |
| 文件大?。?/td> | 409K |
| 代理商： | LTC2424I |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁當前第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁
LTC2412
25
2412f
APPLICATIU
W
U
U
of input multiplexers, wires, connectors or sensors, the
LTC2412 can maintain its exceptional accuracy while
operating with relative large values of source resistance as
shown in Figures 13 and 14. These measured results may
be slightly different from the first order approximation
suggested earlier because they include the effect of the
actual second order input network together with the non-
linear settling process of the input amplifiers. For small C
IN
values, the settling on IN
+
and IN
–
occurs almost indepen-
dently and there is little benefit in trying to match the
source impedance for the two pins.
Larger values of input capacitors (C
IN
> 0.01
μ
F) may be
required in certain configurations for antialiasing or gen-
eral input signal filtering. Such capacitors will average the
input sampling charge and the external source resistance
will see a quasi constant input differential impedance.
When F
O
= LOW (internal oscillator and 60Hz notch), the
typical differential input resistance is 1.8M
which will
generate a gain error of approximately 0.28ppm at full-
scale for each ohm of source resistance driving IN
+
or IN.
When F
O
= HIGH (internal oscillator and 50Hz notch), the
typical differential input resistance is 2.16M
which will
generate a gain error of approximately 0.23ppm at full-
scale for each ohm of source resistance driving IN
+
or IN.
When F
O
is driven by an external oscillator with a fre-
quency f
EOSC
(external conversion clock operation), the
typical differential input resistance is 0.28 10
12
/f
EOSC
and each ohm of source resistance driving IN
+
or IN
–
will
result in 1.78 10
–6
f
EOSC
ppm gain error at full-scale. The
effect of the source resistance on the two input pins is
additive with respect to this gain error. The typical +FS and
–FS errors as a function of the sum of the source resis-
tance seen by IN
+
and IN
–
for large values of C
IN
are shown
in Figures 15 and 16.
In addition to this gain error, an offset error term may also
appear. The offset error is proportional with the mismatch
between the source impedance driving the two input pins
IN
+
and IN
–
and with the difference between the input and
reference common mode voltages. While the input drive
circuit nonzero source impedance combined with the con-
verter average input current will not degrade the INL
performance, indirect distortion may result from the modu-
lation of the offset error by the common mode component
of the input signal. Thus, when using large C
IN
capacitor
values, it is advisable to carefully match the source imped-
ance seen by the IN
+
and IN
–
pins. When F
O
= LOW
(internal oscillator and 60Hz notch), every 1
mismatch
in source impedance transforms a full-scale common
mode input signal into a differential mode input signal of
0.28ppm. When F
O
= HIGH (internal oscillator and 50Hz
notch), every 1
mismatch in source impedance trans-
forms a full-scale common mode input signal into a differ-
ential mode input signal of 0.23ppm. When F
O
is driven by
an external oscillator with a frequency f
EOSC
, every 1
mismatch in source impedance transforms a full-scale
common mode input signal into a differential mode input
signal of 1.78 10
–6
f
EOSC
ppm. Figure 17 shows the
typical offset error due to input common mode voltage for
Figure 15. +FS Error vs R
SOURCE
at IN
+
or IN
–
(Large C
IN
)
Figure 16. –FS Error vs R
SOURCE
at IN
+
or IN
–
(Large C
IN
)
R
SOURCE
(
)
0 100 200 300 400 500 600 700 800 9001000
+
R
)
2412 F15
300
240
180
120
60
0
V
= 5V
REF
+
= 5V
REF
–
= GND
IN
+
= 3.75V
IN
–
= 1.25V
F
O
= GND
T
A
= 25
°
C
C
IN
= 0.01
μ
F
C
IN
= 0.1
μ
F
C
IN
= 1
μ
F, 10
μ
F
R
SOURCE
(
)
0 100 200 300 400 500 600 700 800 9001000
–
R
)
2412 F16
0
–60
–120
–180
–240
–300
V
CC
= 5V
REF
= 5V
REF
–
= GND
IN
+
= 1.25V
IN
–
= 3.75V
F
O
= GND
T
A
= 25
°
C
C
IN
= 0.01
μ
F
C
IN
= 0.1
μ
F
C
IN
= 1
μ
F, 10
μ
F
相關PDF資料 |
PDF描述 |
|---|---|
| LTC2424IG | 16-Bit 2.5-V to 3.3-V/3.3-V To 5-V Level Shifting Transceiver With 3-State Outputs 48-TSSOP -40 to 85 |
| LTC2440 | 2-Channel Differential Input 24-Bit No Latency DS ADC |
| LTC2411-1 | 16-Bit Universal Bus Driver With 3-State Outputs 48-TVSOP -40 to 85 |
| LTC2412 | 16-Bit Universal Bus Driver With 3-State Outputs 48-SSOP -40 to 85 |
| LTC2412CGN | 16-Bit Universal Bus Driver With 3-State Outputs 48-TVSOP -40 to 85 |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LTC2424IG | 功能描述:IC ADC 20BIT 4CH MICROPWR 28SSOP RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標準包裝:1,000 系列:- 位數(shù):16 采樣率（每秒）:45k 數(shù)據(jù)接口:串行 轉(zhuǎn)換器數(shù)目:2 功率耗散（最大）:315mW 電壓電源:模擬和數(shù)字 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應商設備封裝:28-SOIC W 包裝:帶卷 (TR) 輸入數(shù)目和類型:2 個單端，單極 |
| LTC2424IG#PBF | 功能描述:IC ADC 20BIT 4CH MICROPWR 28SSOP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標準包裝:1,000 系列:- 位數(shù):16 采樣率（每秒）:45k 數(shù)據(jù)接口:串行 轉(zhuǎn)換器數(shù)目:2 功率耗散（最大）:315mW 電壓電源:模擬和數(shù)字 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應商設備封裝:28-SOIC W 包裝:帶卷 (TR) 輸入數(shù)目和類型:2 個單端，單極 |
| LTC2424IG#TR | 功能描述:IC ADC 20BIT 4CH MICROPWR 28SSOP RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標準包裝:1,000 系列:- 位數(shù):16 采樣率（每秒）:45k 數(shù)據(jù)接口:串行 轉(zhuǎn)換器數(shù)目:2 功率耗散（最大）:315mW 電壓電源:模擬和數(shù)字 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應商設備封裝:28-SOIC W 包裝:帶卷 (TR) 輸入數(shù)目和類型:2 個單端，單極 |
| LTC2424IG#TRPBF | 功能描述:IC ADC 20BIT 4CH MICROPWR 28SSOP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標準包裝:1,000 系列:- 位數(shù):16 采樣率（每秒）:45k 數(shù)據(jù)接口:串行 轉(zhuǎn)換器數(shù)目:2 功率耗散（最大）:315mW 電壓電源:模擬和數(shù)字 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應商設備封裝:28-SOIC W 包裝:帶卷 (TR) 輸入數(shù)目和類型:2 個單端，單極 |
| LTC2428CG | 功能描述:IC ADC 20BIT 8CH MICROPWR 28SSOP RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標準包裝:1,000 系列:- 位數(shù):16 采樣率（每秒）:45k 數(shù)據(jù)接口:串行 轉(zhuǎn)換器數(shù)目:2 功率耗散（最大）:315mW 電壓電源:模擬和數(shù)字 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應商設備封裝:28-SOIC W 包裝:帶卷 (TR) 輸入數(shù)目和類型:2 個單端，單極 |
發(fā)布緊急采購，3分鐘左右您將得到回復。