- 您现在的位置：买卖IC网 > PDF目录22183 > LTC1966CMS8 (Linear Technology)IC PREC RMS/DC CONV MCRPWR 8MSOP PDF资料下载
参数资料
| 型号： | LTC1966CMS8 |
| 厂商： | Linear Technology |
| 文件页数： | 29/38页 |
| 文件大小： | 391K |
| 描述： | IC PREC RMS/DC CONV MCRPWR 8MSOP |
| 标准包装： | 50 |
| 电流 - 电源： | 155µA |
| 电源电压： | 2.7 V ~ 5.5 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 8-MSOP |
| 包装： | 管件 |
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页当前第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
LTC1966
29
1966fb
As is shown in Figure 25b, where the LTC2420 is set to
continuously convert by grounding the CS pin. The gain
error will be less if CS is driven at a slower rate, however,
the rate should either be consistent or at a rate low enough
that the LTC1966 and its output capacitor have fully settled
by the beginning of each conversion, so that the loading
errors are consistent.
Note that in this circuit, the input current of the LTC2420
is being used to assure monotonicity. The LTC2420 Z
IN
of
16.6M?is effectively connected to half the reference volt-
age, so when the LTC1966 has zero signal, 500mV/16.6M?
= 30nA is provided.
Alternatively, a 5V V
REF
can be used, but in this case the
LTC1966 output span will only use 20% of the LTC2420s
input voltage range. Furthermore, if the OUTRTN remains
grounded, the injected current with zero signal will be
150nA, resulting in 5?the offset error and nonlinearity
shown in Figure 22.
In both of the circuits of Figure 25, a guard ring only has to
encircle three terminals, the LTC1966 output, the top of the
averaging capacitor, and the ADC input. Figure 26 shows
the top copper patterns for example PCB layouts of each.
The low power consumption of the LTC1966 makes it well
suited for battery powered applications, and its slow output
(DC) makes it an ideal candidate for a micropower ADC.
applicaTions inForMaTion
Figure 26b. PCB Layout of Figure 25b with Guard Ring
Figure 26a. PCB Layout of Figure 25a with Guard Ring
Figure 10 in Application Note 75, for instance, details a
10-bit ADC with a 35ms conversion time that uses just
29礎 of supply current. Such an ADC may also be of use
within a 4mA to 20mA loop.
Other types of ADCs sample the input signal once and
perform a conversion on that one sample. With these ADCs
(Nyquist ADCs), a post filter will be needed in most cases
to reduce the peak error with low input frequencies. The
DC accurate filter of Figure 14 is attractive from an error
standpoint, but it increases the impedance at the ADC
input. In most cases, the buffered post filter of Figure?3
will be more appropriate for use with Nyquist analog-to-
digital converters.
SYSTEM CALIBRATION
The LTC1966 static accuracy can be improved with end
system calibration. Traditionally, calibration has been
done at the factory, or at a service depot only, typically
using manually adjusted potentiometers. Increasingly,
systems are being designed for electronic calibration
where the accuracy corrections are implemented in digital
code wherever possible, and with calibration DACs where
necessary. Additionally, many systems are now designed
for self calibration, in which the calibration occurs inside
the machine, automatically without user intervention.
LTC1966
MS8
1966 F26b
LTC2420
SO8
1礷
C
AVE
1966 F26a
1礷
C
AVE
LTC1966
MS8
ICL7106
MQFP
相关PDF资料 |
PDF描述 |
|---|---|
| GBB106DHHR-S621 | CONN EDGECARD 212POS .050 SOLDER |
| RAC15-24SB-E | CONV AC/DC 2A 6.5-18VIN 3.0-5.5V |
| PR1502G-T | DIODE FAST REC 1.5A 100V DO-15 |
| GBB106DHHR-S578 | CONN EDGECARD 212POS .050 SLD |
| VI-JVJ-IZ | CONVERTER MOD DC/DC 36V 25W |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC1966CMS8#PBF | 功能描述:IC PREC RMS/DC CONV MCRPWR 8MSOP RoHS:是 类别:集成电路 (IC) >> PMIC - RMS 至 DC 转换器 系列:- 标准包装:46 系列:- 电流 - 电源:1.2mA 电源电压:±18 V，36 V 安装类型:表面贴装 封装/外壳:16-SOIC（0.295"，7.50mm 宽） 供应商设备封装:16-SOIC W 包装:管件 |
| LTC1966CMS8#TR | 功能描述:IC PREC RMS/DC CONV MCRPWR 8MSOP RoHS:否 类别:集成电路 (IC) >> PMIC - RMS 至 DC 转换器 系列:- 标准包装:46 系列:- 电流 - 电源:1.2mA 电源电压:±18 V，36 V 安装类型:表面贴装 封装/外壳:16-SOIC（0.295"，7.50mm 宽） 供应商设备封装:16-SOIC W 包装:管件 |
| LTC1966CMS8#TRPBF | 功能描述:IC PREC RMS/DC CONV MCRPWR 8MSOP RoHS:是 类别:集成电路 (IC) >> PMIC - RMS 至 DC 转换器 系列:- 标准包装:46 系列:- 电流 - 电源:1.2mA 电源电压:±18 V，36 V 安装类型:表面贴装 封装/外壳:16-SOIC（0.295"，7.50mm 宽） 供应商设备封装:16-SOIC W 包装:管件 |
| LTC1966CMS8PBF | 制造商:Linear Technology 功能描述:RMS-to-DC Converter Prec. uPower MSOP8 |
| LTC1966HMS8#PBF | 功能描述:IC RMS/DC CONV MICROPWR 8-MSOP RoHS:是 类别:集成电路 (IC) >> PMIC - RMS 至 DC 转换器 系列:- 标准包装:46 系列:- 电流 - 电源:1.2mA 电源电压:±18 V，36 V 安装类型:表面贴装 封装/外壳:16-SOIC（0.295"，7.50mm 宽） 供应商设备封装:16-SOIC W 包装:管件 |
发布紧急采购，3分钟左右您将得到回复。