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参数资料
| 型号： | LTC2410CGN |
| 厂商： | Linear Technology |
| 文件页数： | 20/48页 |
| 文件大小： | 0K |
| 描述： | IC ADC 24BIT DIFF INP/REF 16SSOP |
| 标准包装： | 100 |
| 位数： | 24 |
| 采样率（每秒）： | 7.5 |
| 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： | 0°C ~ 70°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 |
| 配用： | DC575A-ND - BOARD DELTA SIGMA ADC LTC2410 |
| 其它名称： | Q894257 |
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LTC2410
27
APPLICATIO S I FOR ATIO
WU
U
In addition to the input sampling charge, the input ESD
protection diodes have a temperature dependent leakage
current. This current, nominally 1nA (
±10nA max), results
in a small offset shift. A 100
source resistance will create
a 0.1
V typical and 1V maximum offset voltage.
Reference Current
In a similar fashion, the LTC2410 samples the differential
reference pins REF+ and REF– transfering small amount of
charge to and from the external driving circuits thus
producing 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 FO = LOW
(internal oscillator and 60Hz notch), the typical differential
reference resistance is 1.3M
which will generate a gain
error of approximately 0.38ppm for each ohm of source
resistance driving REF+ or REF–. When FO = HIGH (internal
oscillator and 50Hz notch), the typical differential refer-
ence resistance is 1.56M
whichwillgenerateagainerror
of approximately 0.32ppm 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
Figure 19. +FS Error vs RSOURCE at IN
+ or IN– (Large CIN)
Figure 20. –FS Error vs RSOURCE at IN+ or IN– (Large CIN)
Figure 21. 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
)
2410 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
)
2410 F20
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
)
2410 F21
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
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC2410CGN#PBF | 功能描述:IC ADC 24BIT DIFF INP/REF 16SSOP 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 |
| LTC2410CGN#PBF | 制造商:Linear Technology 功能描述:A/D Converter (A-D) IC |
| LTC2410CGN#TR | 功能描述:IC ADC 24BIT DIFF INP/REF 16SSOP 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 |
| LTC2410CGN#TRPBF | 功能描述:IC ADC 24BIT DIFF INP/REF 16SSOP 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 |
| LTC2410CGNPBF | 制造商:Linear Technology 功能描述:ADC,LTC2410C 24bit diff D-S SPI SSOP |
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