- 您现在的位置：买卖IC网 > PDF目录10674 > LTC2413IGN#PBF (Linear Technology)IC A/D CONV 24BIT MICRPWR 16SSOP PDF资料下载
参数资料
| 型号： | LTC2413IGN#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 20/44页 |
| 文件大小： | 0K |
| 描述： | IC A/D CONV 24BIT MICRPWR 16SSOP |
| 标准包装： | 100 |
| 位数： | 24 |
| 采样率（每秒）： | 6.8 |
| 数据接口： | MICROWIRE?，串行，SPI? |
| 转换器数目： | 2 |
| 功率耗散（最大）： | 1mW |
| 电压电源： | 单电源 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SSOP（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-SSOP |
| 包装： | 管件 |
| 输入数目和类型： | 1 个差分，双极 |
| 产品目录页面： | 1347 (CN2011-ZH PDF) |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页当前第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页
LTC2413
27
sn2413 2413fs
APPLICATIO S I FOR ATIO
WU
U
Reference Current
In a similar fashion, the LTC2413 samples the differential
reference pins REF+ and REF– transfering small amount of
charge to and from the external driving circuits, thus
produces a dynamic reference current. This current does
not change the converter offset but it may degrade the gain
and INL performance. The effect of this current can be
analyzed in the same two distinct situations.
For relatively small values of the external reference capaci-
tors (CREF < 0.01F), the voltage on the sampling capacitor
settles almost completely and relatively large values for
the source impedance result in only small errors. Such
values for CREF will deteriorate the converter offset and
gain performance without significant benefits of reference
filtering and the user is advised to avoid them.
Larger values of reference capacitors (CREF > 0.01F) may
be required as reference filters in certain configurations.
Such capacitors will average the reference sampling charge
and the external source resistance will see a quasi con-
stant reference differential impedance. When internal os-
cillator is used (FO = LOW), the typical differential input
resistance is 1.43M
which will generate a gain error of
approximately 0.35ppm for each ohm of source resis-
tance driving REF+ or REF–. When FO is driven by an
external oscillator with a frequency fEOSC (external conver-
sion clock operation), the typical differential reference
resistance is 0.20 1012/fEOSC and each ohm of source
resistance drving REF+ or REF– will result in
2.47 10–6 fEOSCppm gain error. The effect of the source
resistance on the two reference pins is additive with
respect to this gain error. The typical +FS and –FS errors
for various combinations of source resistance seen by the
REF+ and REF– pins and external capacitance CREF con-
nected to these pins are shown in Figures 23, 24, 25
and 26.
In addition to this gain error, the converter INL perfor-
mance is degraded by the reference source impedance.
When internal oscillator is used(FO = LOW), every 100 of
source impedance driving REF+ or REF– translates into
about 1.2ppm additional INL error. When FO is driven by
an external oscillator with a frequency fEOSC, every 100
of source resistance driving REF+ or REF– translates into
about 8.73 10–6 fEOSCppm additional INL error.
Figure 20. +FS Error vs RSOURCE at IN
+ or IN– (Large CIN)
Figure 21. –FS Error vs RSOURCE at IN+ or IN– (Large CIN)
Figure 22. Offset Error vs Common Mode Voltage
(VINCM = IN+ = IN–) and Input Source Resistance Imbalance
(
RIN = RSOURCEIN+ – RSOURCEIN–) for Large CIN Values (CIN ≥ 1F)
RSOURCE ()
0 100 200 300 400 500 600 700 800 900 1000
+FS
ERROR
(ppm
OF
V
REF
)
2413 F19
300
240
180
120
60
0
VCC = 5V
REF+ = 5V
REF – = GND
IN+ = 3.75V
IN– = 1.25V
FO = GND
TA = 25°C
CIN = 0.01F
CIN = 0.1F
CIN = 1F, 10F
RSOURCE ()
0 100 200 300 400 500 600 700 800 900 1000
–
FS
ERROR
(ppm
OF
V
REF
)
2413 F21
0
–60
–120
–180
–240
–300
VCC = 5V
REF+ = 5V
REF – = GND
IN+ = 1.25V
IN– = 3.75V
FO = GND
TA = 25°C
CIN = 0.01F
CIN = 0.1F
CIN = 1F, 10F
VINCM (V)
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
OFFSET
ERROR
(ppm
OF
V
REF
)
2413 F22
120
100
80
60
40
20
0
–20
–40
–60
–80
–100
–120
FO = GND
TA = 25°C
RSOURCEIN– = 500
CIN = 10F
VCC = 5V
REF+ = 5V
REF – = GND
IN+ = IN– = VINCM
A:
RIN = +400
B:
RIN = +200
C:
RIN = +100
D:
RIN = 0
E:
RIN = –100
F:
RIN = –200
G:
RIN = –400
A
B
C
D
E
F
G
相关PDF资料 |
PDF描述 |
|---|---|
| LTC2411IMS#PBF | IC A/D CONV 24BIT MICRPWR 10MSOP |
| LM2901VNG | IC COMP QUAD SGL SUPPLY 14DIP |
| ISL4245EIRZ | IC 3DRVR/5RCVR RS232 3V 32-QFN |
| NCV2901DR2G | IC COMP QUAD SGL SUPPLY 14SOIC |
| LMV339DTBR2G | IC COMPARATOR GP LV QUAD 14TSSOP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC2414CGN | 功能描述:IC ADC 8CH 24BIT DIFFINPUT28SSOP RoHS:否 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1,000 系列:- 位数:16 采样率（每秒）:45k 数据接口:串行 转换器数目:2 功率耗散（最大）:315mW 电压电源:模拟和数字 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:28-SOIC（0.295"，7.50mm 宽） 供应商设备封装:28-SOIC W 包装:带卷 (TR) 输入数目和类型:2 个单端，单极 |
| LTC2414CGN#PBF | 功能描述:IC ADC 8CH 24BIT DIFFINPUT28SSOP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1 系列:microPOWER™ 位数:8 采样率（每秒）:1M 数据接口:串行，SPI? 转换器数目:1 功率耗散（最大）:- 电压电源:模拟和数字 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:24-VFQFN 裸露焊盘 供应商设备封装:24-VQFN 裸露焊盘（4x4） 包装:Digi-Reel® 输入数目和类型:8 个单端，单极 产品目录页面:892 (CN2011-ZH PDF) 其它名称:296-25851-6 |
| LTC2414CGN#PBF | 制造商:Linear Technology 功能描述:IC ADC 24BIT SSOP-28 |
| LTC2414CGN#TR | 功能描述:IC ADC 8CH 24BIT DIFFINPUT28SSOP RoHS:否 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1,000 系列:- 位数:16 采样率（每秒）:45k 数据接口:串行 转换器数目:2 功率耗散（最大）:315mW 电压电源:模拟和数字 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:28-SOIC（0.295"，7.50mm 宽） 供应商设备封装:28-SOIC W 包装:带卷 (TR) 输入数目和类型:2 个单端，单极 |
| LTC2414CGN#TRPBF | 功能描述:IC ADC 8CH 24BIT DIFFINPUT28SSOP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1,000 系列:- 位数:16 采样率（每秒）:45k 数据接口:串行 转换器数目:2 功率耗散（最大）:315mW 电压电源:模拟和数字 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:28-SOIC（0.295"，7.50mm 宽） 供应商设备封装:28-SOIC W 包装:带卷 (TR) 输入数目和类型:2 个单端，单极 |
发布紧急采购，3分钟左右您将得到回复。